View source for L-PI-12-108, Final Response to NRC Request for Information, Per 10CFR50.54(f) Regarding the Seismic Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

{{Adams
| number = ML12334A495
| issue date = 11/26/2012
| title = Final Response to NRC Request for Information, Per 10CFR50.54(f) Regarding the Seismic Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident
| author name = Lynch J
| author affiliation = Northern States Power Co, Xcel Energy
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000282
| license number = DPR-042
| contact person = 
| case reference number = L-PI-12-108
| document type = Letter type:L, Report, Miscellaneous
| page count = 469
| project = 
| stage = Response to RAI
}}

=Text=
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                                  ,,,m.,       FROM PUBLIC DICCLOU9RE XcelEnergy&deg;                                   Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089-9642 NOV 2 2B12                                                                        L-PI-12-108 10 CFR 50.54(f)
U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie Island Nuclear Generating Plant Docket No. 50-282 Renewed Facility Operating License No. DPR-42 PINGP Unit 1 - Final Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insiahts from the Fukushima Dai-ichi Accident

==References:==
: 1. NRC Letter, "Request for Information Pursuant to Title 10 of the Code of FederalRegulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated March 12, 2012, ADAMS Accession No. ML12053A340.
: 2. NRC Letter, "Endorsement of Electric Power Research Institute (EPRI) Draft Report 1025286, 'Seismic Walkdown Guidance,"'
dated May 31, 2012, ADAMS Accession No. ML12145A529.
: 3. NSPM Letter to NRC, "Prairie Island Nuclear Generating Plant's 120-Day Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendations 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated July 9, 2012, ADAMS Accession No. ML12192A207.
On March 12, 2012, the Nuclear Regulatory Commission (NRC) Staff issued a request for information regarding Near-Term Task Force (NTTF) insights from the Fukushima Dai-ichi accident, to all NRC power reactor licensees and holders of construction permits in active or deferred status (Reference 1). Enclosure 3 of the March 12, 2012 letter contains specific Requested Actions, Requested Information, and Required

Document Control Desk Page 2 Responses associated with NTTF Recommendation 2.3, Seismic. This letter provides the required final response to the Requested Information for NTTF Recommendation 2.3, Seismic, from the Northern States Power Company, a Minnesota corporation (NSPM), d/b/a Xcel Energy, for Prairie Island Nuclear Generating Plant (PINGP),
Unit 1.
In a letter to the NRC dated July 9, 2012 (Reference 3), NSPM confirmed that it would use EPRI Report 1025286, "Seismic Walkdown Guidance For Resolution of Fukushima Near-Term Task Force Recommendation 2.3: Seismic," endorsed by the NRC in Reference 2, as the basis for seismic walkdowns at the PINGP. These walkdowns were performed to verify current plant configuration with the current licensing basis; verify the adequacy of current strategies and maintenance plans; and identify degraded, nonconforming, or unanalyzed conditions.
The enclosure to this letter provides the Requested Information in response to NTTF Recommendation 2.3, Seismic, and includes the results of the seismic walkdowns for PINGP Unit 1. This enclosure contains Sensitive Unclassified Non-Safeguards Information (SUNSI) of which the loss, issue, modification, or unauthorized access can reasonably be foreseen to harm the public interest, or the commercial or financial interests of NSPM. NSPM requests that this proprietary information be withheld under 10 CFR 2.390(d)(1). A redacted version of the information enclosed in this letter will be provided in a separate letter for public disclosure.
If there are any questions, or if additional information is needed, please contact Ms.
Jennie Eckholt, Licensing Engineer, at 612-330-5788.
Summary of Commitments This letter makes the following new commitments and makes no revisions to existing commitments.
Regulatory Commitments                              Due Date NSPM will complete the Seismic Walkdowns of the                    Refueling Outage inaccessible components listed in Appendix D, "Plan for               (RFO) 1R30 Future Seismic Walkdown of Inaccessible Equipment," of the enclosure.
NSPM will provide an updated seismic walkdown report               60 days following with the results of the walkdowns of the inaccessible               the end of RFO components.                                                              1R30

Document Control Desk Page 3 I declare under penalty of perjury that the foregoing is true and correct.
Executed on        NOV 2 6 2012 J     es .Lyn:ch Site Vice President, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota Enclosure cc:    Administrator, Region Ill, USNRC Director of Nuclear Reactor Regulation (NRR), USNRC NRR Project Manager, PINGP, USNRC Senior Resident Inspector, PINGP, USNRC

SUNG'I  WI.THHOLD F,.FMP..ULIC DCL ,"SU'E ENCLOSURE PRAIRIE ISLAND NUCLEAR GENERATING PLANT - UNIT 1 NTTF RECOMMENDATION 2.3 -
REDACTED SEISMIC WALKDOWN REPORT (362 Pages Follow)

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table of Contents List of Tables .........................................................................................................                 iii Executive Summary .................................................................................................                      iv 1      Introduction................................................................................................................... 1-1 1.1   Background ........................................................................................................... 1-1 1.2   Plant Overview ...................................................................................................... 1-1 1.3   Approach ............................................................................................................... 1-2 2      Seismic Licensing Basis..............................................................................................           2-1 2.1   Overview ............................................................................................................... 2-1 2.2   Design Basis Earthquake (DBE) ............................................................................                2-1 2.3   Design of Seism ic Category I SSCs ......................................................................                 2-1 2.3.1 Summary of Seismic Design ........................................................................                  2-2 2.3.2 Methods for Qualifying Electrical and Mechanical Equipment and Instrumentation ...................................................................................................... 2-2 2.3.3 Summary of Codes and Standards ...............................................................                      2-3 3      PersonnelQualifications..............................................................................................           3-1 3.1   Overview ............................................................................................................... 3-1 3.2   W alkdown Personnel .............................................................................................         3-1 3.3   Personnel Qualifications ........................................................................................         3-2 4      Selection of SSCs ......................................................................................................... 4-1 4.1   Overview ............................................................................................................... 4-1 4.2   SW EL Development ..............................................................................................          4-1 4.2.1 SWEL 1 - Sample of Required Items for the Five Safety Functions ............. 4-1 4.2.2 SW EL 2 - Spent Fuel Pool Related Items ....................................................                        4-4 4.2.3 SW EL 2 Development Conclusion ................................................................                     4-6 5      Seism ic Walkdowns and Area Walk-Bys ....................................................................                       5-1 5.1   Overview ............................................................................................................... 5-1 5.2   Seismic W alkdowns ...............................................................................................        5-1 5.2.1 Adverse Anchorage Conditions ....................................................................                   5-2 5.2.2 Configuration Verification .............................................................................            5-3 5.2.3 Adverse Seismic Spatial Interactions ...........................................................                    5-3 i

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 5.2.4 Other Adverse Seismic Conditions ...............................................................                     5-4 5.2.5 Issues Identified during Seismic Walkdowns ................................................                          5-5 5.3  Area W alk-Bys ....................................................................................................... 5-5 5.3.1 Seismically-Induced Flooding/Spray Interactions .........................................                            5-6 5.3.2 Seismically-Induced Fire Interactions ...........................................................                    5-6 5.3.3 Issues Identified during Area Walk-bys ........................................................                      5-7 6  Licensing Basis Evaluations...................................................................................                  6-1 7  IPEEE Vulnerabilities Resolution Report...............................................................                          7-1 8  Peer Review .................................................................................................................. 8-1 9  References .................................................................................................................... 9-1 Appendices A  Equipment Lists...........................................................................................................      A-1 B  Seismic Walkdown Checklists (SWCs) .................................................................                            B-1 C  Area Walk-By Checklists (A WCs) ..........................................................................                      C-1 D  Plan for Future Seismic Walkdown of Inaccessible Equipment...........................                                           D-1 E  Peer Review Report................................................................................................              E-1 F  Dispositionof Seismic Walkdown Observations..................................................                                   F-1 ii

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report List of Tables Table 2-1: List of Codes, Standards, and Specifications .................................................. 2-4 Table 3-1: Personnel Roles ..................................................................................       3-1 Table 5-1: Anchorage Configuration Confirmation ......................................................... 5-3 Table 5-2: Prairie Island Unit 1 SW C CAP Status .......................................................... 5-8 Table 5-3: Prairie Island Unit 1 Area W alk-by CAP Status .............................................. 5-10 Table 7-1: Prairie Island IPEEE Seismic Vulnerabilities .................................................. 7-2 Table A-i: Prairie Island Unit 1 - Base List 1 ............................................................... A-2 Table A-2: Prairie Island - Base List 2 ........................................................................... A-17 Table A-3: Prairie Island Unit 1 - SW EL 1 ..................................................................... A-18 Table A-4: Prairie Island - SW EL 2 .............................................................................. A-27 Table B-i: Prairie Island Unit 1 Completed SW Cs ...................................................... B-1 Table C-1: Prairie Island Unit 1 Completed AW Cs ..................................................... C-1 Table D-i: Summary of Inaccessible Equipment ......................................................... D-1 Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 .............. E-7 Table F-i: Disposition of Seismic W alkdown Observations ............................................... F-2 Table F-2: Disposition of Area W alk-by Observations ...................................................... F-8 iii

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Executive Summary Following the accident at the Fukushima Dai-ichi nuclear power plant resulting from the March 11, 2011, Great Tohoku Earthquake and subsequent tsunami, the NRC established the Near-Term Task Force (NTTF) in response to Commission direction.
The NTTF Charter, dated March 30, 2011, tasked the NTTF with conducting a systematic and methodical review of NRC processes and regulations and determining if the agency should make additional improvements to its regulatory system. Ultimately, a comprehensive set of recommendations contained in a report to the Commission (dated July 12, 2011, SECY-1 1-0093 (Agency-wide Documents Access and Management System (ADAMS) Accession No. ML111861807)) was developed.
On August 19, 2011, following issuance of the NTTF report, the Commission directed the NRC staff in a staff requirements memorandum (SRM) for SECY-1 1-0093 (ADAMS Accession No. ML112310021), in part, to determine which of the recommendations could and should be implemented without unnecessary delay. On September 9, 2011, the NRC staff provided a document to the Commission (ADAMS Accession No. ML11245A158) which identified those actions from the NTTF report that should be taken without unnecessary delay.
On March 12, 2012, the NRC issued a 10 CFR 50.54(f) letter that requested information to assure that these recommendations are addressed by all U.S. nuclear power plants (Reference 6). Every U.S. nuclear power plant is required to perform seismic walkdowns to identify and address degraded, non-conforming or unanalyzed conditions as well as to verify the current plant configuration with the current seismic licensing basis. This report documents the seismic walkdowns performed at the Prairie Island Nuclear Generating Plant (PINGP) as required to address, in part, the 10 CFR 50.54(f) information request issued by the NRC.
The Nuclear Energy Institute (NEI) cooperated with the NRC to prepare guidance for conducting seismic walkdowns as requested in Enclosure 3 of Reference 6, titled, Recommendation 2.3: Seismic. The guidelines and procedures prepared by NEI and endorsed by the NRC were published through the Electric Power Research Institute (EPRI) as EPRI Technical Report 1025286, Seismic Walkdown Guidance for Resolution of Fukushima Near-Term Task Force Recommendation 2.3: Seismic, dated June 2012 (Reference 1). The Northern States Power Company, a Minnesota corporation (NSPM),
d/b/a Xcel Energy, confirmed that the EPRI seismic walkdown guidance would be used as the basis for conducting the seismic walkdowns and developing the needed information at PINGP in a letter dated July 9, 2012 (Reference 10).
iv

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report The EPRI Seismic Walkdown Guidance was used for the engineering walkdowns and evaluations described in this report. In accordance with the EPRI Seismic Walkdown Guidance, the following topics are addressed in the subsequent sections of this report:
* Seismic Licensing Basis
* Personnel Qualifications
* Selection of Systems, Structures, and Components (SSC)
* Seismic Walkdowns and Area Walk-Bys
* Licensing Basis Evaluations
     "   IPEEE Vulnerabilities Resolution Report
* Peer Reviews This report documents any discrepancies or potential seismic issues identified as a result of the seismic walkdowns completed at PINGP. No adverse seismic conditions were identified at PINGP. Corrective Action Program Action Requests (CAPs) were entered into the site's 10 CFR 50 Appendix B qualified corrective action program. The disposition of all potentially adverse observations noted during the seismic walkdowns is documented in Appendix F of this report.
The Seismic Walkdowns identified several minor issues predominantly pertaining to seismic housekeeping and potential seismic interactions associated with overhead lighting fixtures. The Seismic Walkdowns identified no degraded, nonconforming, or unanalyzed conditions that required either immediate or follow-on action(s). No planned or newly identified protection or mitigation features have resulted from the efforts to address the NRC 10 CFR 50.54(f) letter.
Follow-on activities required to complete the efforts to address Enclosure 3 of the NRC 10 CFR 50.54(f) letter include inspection of 29 items deferred due to inaccessibility or internal cabinet inspections. Area Walk-Bys will be completed, as required, during these follow-on activities.
v

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 1
Introduction

==1.1 BACKGROUND==

In response to Near-Term Task Force (NTTF) Recommendation 2.3, the Nuclear Regulatory Commission (NRC) issued a 10 CFR 50.54(f) letter on March 12, 2012 requesting that all licensees perform seismic walkdowns to identify and address plant-specific degraded, nonconforming, or unanalyzed conditions (through the corrective action program), verify the adequacy of monitoring and maintenance for protective features, and inform the NRC staff of the results of the walkdowns and corrective actions taken or planned. The Nuclear Energy Institute (NEI), with the Electric Power Research Institute (EPRI), prepared industry guidance to assist licensees in responding to this NRC request. The industry guidance document, EPRI Technical Report 1025286, Seismic Walkdown Guidance for Resolution of Fukushima Near-Term Task Force Recommendation 2.3: Seismic, dated June 2012 (Reference 1), was endorsed by the NRC on May 31, 2012 (Reference 8). NSPM confirmed that the EPRI seismic walkdown guidance would be used as the basis for conducting the seismic walkdowns and gathering the requested information at PINGP in a letter dated July 9, 2012 (Reference 10).
1.2 PLANT OVERVIEW PINGP, Units 1 and 2, are both 2-loop pressurized water reactors owned by NSPM.
Westinghouse Electric Corporation designed and supplied the nuclear steam supply systems, initial reactor fuel, and the turbine-generator units. Pioneer Service and Engineering Company (PS&E) was the plant's architect-engineer. Northern States Power was the constructor.
The containment for each unit was designed by PS&E and consists of two systems:
* A primary containment consisting of a free-standing low-leakage steel vessel, including its penetrations, isolation systems and heat removal systems.
* A secondary medium leakage concrete shield building surrounding the primary containment, including special ventilation systems for its annulus and adjacent auxiliary building.
1-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 1.3 APPROACH The EPRI Seismic Walkdown Guidance (Reference 1) is used for PINGP Unit 1 engineering walkdowns and evaluations described in this report. In accordance with Reference 1, the following topics are addressed in the subsequent sections of this report:
* Seismic Licensing Basis (Section 2)
* Personnel Qualifications (Section 3)
* Selection of SSCs (Section 4)
* Seismic Walkdowns and Area Walk-Bys (Section 5)
* Licensing Basis Evaluations (Section 6)
* IPEEE Vulnerabilities Resolution Report (Section 7)
* Peer Review (Section 8) 1-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 2
Seismic Licensing Basis 2.1 OVERVIEW This section of the report summarizes the seismic licensing basis for PINGP Unit 1 and Unit 2. The safe shutdown earthquake and a summary of the codes, standards, and methods used in the design of Seismic Category I structures, systems, and components (SSCs) are presented. This section does not establish or change the seismic licensing basis of the facility and is intended to provide a fundamental understanding of the seismic licensing basis of the facility.
2.2 DESIGN BASIS EARTHQUAKE (DBE)
The design basis earthquake (DBE) is based upon a maximum horizontal ground acceleration of 0.12g and the associated response spectra are given in Plate 4.6, Appendix E of Reference 2. The DBE is synonymous with the Safe Shutdown Earthquake (SSE) (Reference 2, Section 12.2.1.3.5).
2.3 DESIGN OF SEISMIC CATEGORY I SSCS A full description of the SSE along with the codes, standards, and methods used in the design of the Seismic Category I SSCs for meeting the seismic licensing basis requirements is provided in the following PINGP Updated Safety Analysis Report (USAR) (Reference 2) sections:
* USAR Section 12.2.1.1, Classificationof Structures and Components
* USAR Section 12.2.1.3.5, Seismic Loads
          "   USAR Section 12.2.1.4, General Design Criteriafor Structures
* USAR Section 12.2.1.4.3, Structural Design Basis
          "   USAR Section 12.2.1.5, Seismic Analysis of Mechanicaland Electrical Equipment These USAR sections should be referred to for a detailed understanding of the seismic licensing basis.
2-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 2.3.1  Summary of Seismic Design The site Operating Basis Earthquake (OBE) and DBE ground response spectra are shown in Plates 4.5 and 4.6, respectively, in Appendix E of the PINGP USAR (Reference 2). The equivalent multi-mass mathematical model was constructed to approximate the structural system. The effect of the foundation soils is included in the model by means of equivalent springs. The spectral method was used to determine the maximum response of each mass point for each mode, using the OBE (Reference 2, Plate 4.5 in Appendix E) and damping values given in USAR Table 12.2-8 of Reference 2 as input. The total response for each point was determined by the root-mean-square (RMS) method. From this, a set of curves were developed showing the maximum translational accelerations, displacements, shears, and moments as varying with height.
The maximum horizontal and vertical ground accelerations at the ground level are 0.12g for the DBE (SSE) and 0.06g for OBE (Plates 4.5 & 4.6, Appendix E - Reference 2).
These OBE and DBE ground response spectra were plotted at 0.5%, 2% and 5%
damping (Reference 2, Plates 4.5 and 4.6 of Appendix E). The vertical ground acceleration is equal to two-thirds of the horizontal ground acceleration (Reference 2, Section 12.2.1.4.3.1.1).
2.3.2   Methods for Qualifying Electricaland MechanicalEquipment and Instrumentation Equipment and instrumentation are qualified using one or more of the following methods:
: 1. Qualification by analysis,
: 2.      Qualification by test, or
: 3.      Qualification by combination of analysis and test.
Equipment is qualified by analysis if the equipment is not too complex and can be represented in a mathematical model for performing static analysis and/or dynamic analysis.
: 1. Qualification by Analysis Static Analysis Static analysis is performed for an equipment item determined to be rigid. The seismic forces on each component of the equipment are obtained by concentrating the total mass at the equipment's center of gravity and multiplying the values of the mass and the appropriate floor acceleration from the seismic response spectra. The resulting forces are converted to stresses and are added to the other equipment stresses, as per the design criteria, to determine if the equipment is adequate to withstand the required load.
2-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Dynamic Analysis Dynamic analysis is performed for flexible equipment items. The equipment is analyzed using a response spectrum or time-history analysis. Both of these methods have been used to qualify equipment for PINGP.
: 2. Qualification by Test If the equipment is flexible and too complex to be represented properly by an analytical model, then the equipment is qualified by test. Testing is also performed where the equipment is required to operate during or after a seismic event for which this cannot be established analytically. Seismic tests are performed by subjecting the equipment to vibratory motion which conservatively simulates the motion at the equipment mounting location during an (or several) OBE(s), followed by the vibratory motion associated with an SSE.
: 3. Qualification by Combination of Test and Analysis Some electrical equipment and instrumentation are qualified by a combination of test and analysis. This qualification can be achieved through various methods such as extrapolation from similar equipment or similar seismic conditions.
2.3.3 Summary of Codes and Standards This section summarizes the codes, specifications, standards of practice, and other accepted industry guidelines to the extent applicable in the design and construction of the following:
          "     Containment - the applicable codes, standards, and specifications for the containment are 1 through 23 in Table 2-1 below.
* Containment Internal Structures - all of the items listed in Table 2-1 below are applicable for the containment internal structures.
          "     Safety-Related Structures Outside of Containment - all of the items listed in Table 2-1 below are applicable, with the exception of Items 17 and 18.
* Foundations for Seismic Category I Structures - the applicable codes, standards, and specifications are 1 through 14 and 19 through 23 in Table 2-1 below.
2-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 2-1: List of Codes, Standards, and Specifications Specification       Specification or Reference               Standard                                Title Number              Designation American Concrete        Building Code Requirements for Reinforced 1            Institute (ACI) 318-               Concrete (Reference 14) 71,77,83 2                   ACI 301       Specifications for Structural Concrete for Buildings (Reference 15)
Recommended Practice for ANSI Al 45.1 Concrete Formwork (Reference 16)
Recommended Practice for Hot ANSI Al 70.1 Weather Concreting (Reference 17)
Recommended Practice for Selecting Proportions for Normal Weight Concrete (Reference 18)
Recommended Practice for Measuring, Mixing, Transporting, and placing concrete (Reference 19)
Manual of Standard Practice for Detailing Reinforced Concrete Structures (Reference 20)
Recommended Practice for Cold Weather Concreting (Reference 21)
Recommended Practice for Consolidation of Concrete (Reference 22)
Recommended Practice for Curing Concrete 10                   ACI 308                           (Reference 23)
Recommended Practice for ANSI Al 46.1 Evaluation 11                   ACI 214        of Compression Test Results of Field (Reference 24)
Recommended Practice for Concrete Inspection 12                   ACI 311                           (Reference 25) 13                   ACI 304        Preplaced Aggregate Concrete for Structural and Mass Concrete (Reference 26) 14               Report by ACI      Placing Concrete by Pumping Method (Reference Committee 304                                27)
Specification for the Design, Fabrication, and 15                AISC-69,78       Erection of Structural Steel for Building (Reference 28) 16                 AWS D1.1              Structural Welding Code (Reference 29) 17                    ASME              Boiler & Pressure Vessel Code, Section III (Reference 30)
ASME-1 971, S73                   Division 1, Subsection NE 2-4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 2-1: List of Codes, Standards, and Specifications Specification      Specification or Reference             Standard                                   Title Number              Designation ASME-1 974, S75                     Division 1, Subsection NF Division 2, Proposed Standard Code for Concrete ASME-1 973        Reactor Vessels and Containments Issued for Trial Use and Comments ASME-1 980                          Division 2, CC 6000 1992 Addenda, Division 1, Section XI, Subsection ASME-1 992                                IWL, IWE American Public         Test Methods Sulphides in Water, Standard 18              Health Assoc.       Methods for the Examination of Water and Waste (APHA)                           Water (Reference 31) 19                  ASTM           Annual Books of ASTM Standards (Reference 32) 20               CRSI MSP-1            Manual of Standard Practice (Reference 33)
Proposed Supplementary Q.A. Requirements for 21              ANSI N45.2.5         Installation, Inspection and Testing of Structural Concrete and Structural Steel During Construction Phase of Nuclear Power Plants (Reference 34)
Chief of Research and Development Standards, 22                   CRD            Department of the Army, Handbook for Concrete and Cement Volume I and II, Corps of Engineers U.S. Army (Reference 35) 23              ACI-349-76, 85       Code Requirements for Nuclear Safety Related Concrete Structures (Reference 36) 24                   AISI              Specification for design of cold-formed steel structural members (Reference 37) 2-5

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 3        Personnel Qualifications 3.1 OVERVIEW This section of the report identifies the personnel that participated in the NTTF Recommendation 2.3 Seismic Walkdown efforts. This section also describes the qualifications of these personnel. A description of the responsibilities and minimum qualifications of each Seismic Walkdown participant's role(s) is provided in Section 2 of the EPRI Report 1025286 (Reference 1).
3.2 WALKDOWN PERSONNEL Table 3-1 below summarizes the names and corresponding roles of personnel who participated in the NTTF Recommendation 2.3 Seismic Walkdown effort.
Table 3-1: Personnel Roles Name B. Lory (S&A)
W. Djordjevic (S&A)
D. Zercher (NSPM)
D. Cherlopalle (NSPM)
K. Kriesel (NSPM)
S. Seilhymer (NSPM)
P. Valtakis (NSPM)
T. Bacon (S&A)
M. Etre (S&A)
D. Moore Notes:
: 1. Peer Review Team member for SWEL review only.
: 2. Peer Review Team Leader.
: 3. No licensing basis evaluations were performed.
3-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 3.3 PERSONNEL QUALIFICATIONS Summarized below are the qualifications for the personnel who participated in the NTTF Recommendation 2.3 Seismic Walkdown efforts. The personnel qualifications include applicable seismic training, education, and professional experience.
Bruce M. Lory
         " Activities Performed: Equipment Selection, SWE
         " Seismic Training Completed: Instructor for the Fundamentals of Equipment Seismic Qualification Training and EPRI NTTF Recommendation 2.3 - Plant Seismic Walkdowns Training
         "   Education: Bachelors of Science in Mechanical Engineering from the State University of New York at Buffalo
         "   Professional Experience: 30+ years of experience in the commercial nuclear industry. Worked 18+ years in Seismic Qualification of equipment and components, and 15+ years of Environmental Qualification experience, in consulting services and in utility positions. Currently works as a senior consultant for Stevenson and Associates with specialization in Seismic and Environmental Qualification, as well as Single Failure-Proof crane design verification.
Walter (Wally) Diordievic
         " Activities Performed: SWE
         "   Seismic Training Completed: EPRI SQUG training and EPRI NTTF Recommendation 2.3 - Plant Seismic Walkdowns Training
         "   Education: Master of Science in Structural Engineering from the Massachusetts Institute of Technology
         " Professional Experience: 37+ years of seismic experience serving the nuclear industry. Managed and led seismic walkdowns and fragility analyses of structures and components for use in probabilistic risk assessments. Performed more than twenty USI A-46 and IPEEE projects in response to the requirements of Generic Letters 87-02 and 88-20. Currently works as a senior Consultant and serves as President of Stevenson and Associates with specialization in the dynamic analysis and design of structures and equipment for seismic, blast, fluid, and wind loads.
Dennis Zercher
         " Activities Performed: SWE
         " Seismic Training Completed: EPRI SQUG Training
         "   Education: BSCE, Michigan Technological University 3-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Professional Experience: 28+ years of structural and seismic engineering in commercial nuclear industry. Performed the USI A-46 and IPEEE seismic walkdowns for Monticello Nuclear Generating Plant. A registered Professional Engineer in Minnesota and Wisconsin. He works at the Monticello Nuclear Generating Plant as a Design Engineer. Was a Structural Engineer at FluiDyne Engineering and PaR Systems.
Dileep Cherlopalle
    " Activities Performed: Equipment Selection Peer Review, SWE
    " Seismic Training Completed: EPRI NTTF Recommendation 2.3 - Plant Seismic Walkdowns Training
    "  Education: Master of Science in Structural Engineering - University of Alaska -
Fairbanks
    "  Professional Experience: 3+ years of experience in commercial nuclear industry. Currently a Design Civil/Structural Engineer at PINGP.
Kyle Kriesel
    " Activities Performed: Licensing Basis Reviewer, SWE
    " Seismic Training Completed: EPRI SQUG Training
    "  Education: Bachelor of Science in Civil Engineering from North Dakota State University
    "  Professional Experience: 11 + years of experience in the commercial nuclear industry. A registered Professional Engineer in Minnesota. Worked as a Plant Design Civil/Structural Engineer at Cooper Nuclear Station and PINGP including structures monitoring implementation and structures monitoring program owner.
Stephen Seilhymer
    " Activities Performed: Equipment Selection Peer Reviewer
    " Seismic Training Completed: N/A
    "  Education: Bachelor of Science in Physics - Applied Nuclear Science from Winona State University
    "  Professional Experience: Reached rank of Electronics Technician First Class and performed as Reactor Operator and Engineering Watch Supervisor on a nuclear powered submarine in the United States Navy. Obtained Senior Reactor Operator License and has completed roles as Equipment Operator, Control Room Supervisor, Shift Manager, Assistant Operations Manager, Licensed Operator Requalification Training Supervisor, and Operations Simulator and Classroom Instructor positions at PINGP. Has a total of 30 years of nuclear experience, with 18 years of experience as a Senior Reactor Operator.
3-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Pete Valtakis
    " Activities Performed: Equipment Selection
    " Seismic Training Completed: N/A
    "  Education: Bachelor of Science in Physics, Winona State University
    "  Professional Experience: Acted as a Reactor Operator on a nuclear powered submarine in the United States Navy, and was also assigned as a Leading Petty Officer of the Reactor Controls Division, an Engineering Officer of the Watch, and a Training Coordinator for the Naval Prototype Training Unit. Obtained Senior Reactor Operator License at PINGP and has completed roles as Reactor Operator, Lead Operator, Control Room Supervisor, and Shift Manager at PINGP. Participated in all phases of pre-operational testing and initial criticality of both PINGP nuclear generating units. Has a total of 39+ years of commercial nuclear experience, with 28+ years of experience as a Senior Reactor Operator.
Todd Bacon
    "  Activities Performed: Peer Review Team Leader
    " Seismic Training Completed: Near Term Task Force Recommendation 2.3             -
Plant Seismic Walkdowns
    "  Education: Bachelor of Science in Civil Engineering from the University of Illinois
       - Champaign
    "  Professional Experience: Mr. Bacon has thirty years of experience in the design and modification of mechanical and structural systems. His responsibilities have included serving as an Engineering Manager involving work from the conceptual design through to the installation support phases of multiple projects. Mr. Bacon has served as Project Engineer and Project Manager for numerous work scope efforts, including coordination of personnel in multiple locations. His efforts have also included significant client and/or regulatory interface, as required. These activities have also included responsibility for budgets, schedules and the technical accuracy of work performed. In addition, he has extensive experience in proposal and report development, as well as personnel training activities. Mr.
Bacon's work has involved extensive use of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, including involvement with various piping system related committees.
    "  Performed: Peer Reviewer 3-4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Mark Etre
   "   Activities Performed: Peer Reviewer
   " Seismic Training Completed: EPRI SQUG training and Near Term Task Force Recommendation 2.3 - Plant Seismic Walkdowns
   "   Education: Master of Science in Mechanical Engineering from the Worcester Polytechnic Institute
   "   Professional Experience: Mr. Etre is a Project Manager in the S&A Boston office.
He has managed and led seismic walkdowns and analyses of structures and components. Mr. Etre has more than 20 years of seismic experience serving the nuclear industry. Mr. Etre has participated in numerous USI A-46 and IPEEE projects in response to the requirements of Generic Letters 87-02 and 88-20.
David L. Moore
   " Activities Performed: IPEEE Reviewer
   "   Seismic Training Completed: EPRI SQUG Systems and Relay Evaluation Training Course
   "   Education: Bachelor of Science in Physics from University of Texas; Masters of Science in Civil/Structural Engineering from University of Washington
   "   Professional Experience: 30+ years of seismic PRA and SMA experience for the nuclear industry and NRC. Manager, Systems Task Leader, or Peer Reviewer for over 30 seismic PRAs, SMAs, or USI A-46 assessments. Tasks included development of seismic success paths and seismic equipment lists, performance of seismic walkdowns, quantification of seismic CDF and LERF, and performance of uncertainty and sensitivity analyses. Currently works as a Consultant for several seismic PRA projects, including NRC sponsored research project on treatment of seismic correlation.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 4
Selection of SSCs 4.1   OVERVIEW This section of the report describes the process used to select SSCs that were included in the Seismic Walkdown Equipment List (SWEL). The actual equipment lists that were developed in this process are found in Appendix A and are as follows:
* Table A-1 is a list of the equipment coming out of Screen #2 and entering Screen #3 for the equipment selection of SWEL 1. This list of equipment is titled Base List 1.
       "   Table A-2 contains the list of equipment which are required to support Spent Fuel Pool (SFP) Cooling and are classified as Seismic Category 1.
       "   Table A-3 is the PINGP Unit 1 list of equipment which has gone through the screening process defined in Reference 1 and then selected by the Equipment Selection Team to be seismically inspected in accordance with Reference 1, excluding SFP equipment which is in SWEL 2. This list of equipment is termed SWEL 1.
* Table A-4 is the PINGP Unit 1 list of equipment necessary to support SFP cooling and inventory, has gone through the screening process defined in Reference 1, and then selected from this list to be seismically inspected in accordance with Reference
: 1. This list of equipment is termed SWEL 2.
4.2   SWEL DEVELOPMENT The selection of SSCs process described in EPRI Technical Report 1025286, Seismic Walkdown Guidance for Resolution of Fukushima Near-Term Task Force Recommendation 2.3: Seismic, dated June 2012 (Reference 1), was utilized to develop the SWEL for PINGP Unit 1.
The SWEL is comprised of two groups of items:
* SWEL 1 is a sample of items required to safely shut down the reactor and maintain containment integrity.
       "   SWEL 2 is a list of spent fuel pool related items.
4.2.1 SWEL 1 - Sample of RequiredItems for the Five Safety Functions The process for selecting a sample of SSCs required for safe shutdown and maintaining containment integrity began with the composite Seismic Qualification Utility Group (SQUG) Safe Shutdown Equipment List (SSEL) (Reference 3). The SSEL was then subjected to the following four screens to identify the items to be included on the Seismic Walkdown Equipment List 1 (SWEL 1):
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report
: 1. Screen #1 - Seismic Category 1 As described in Section 3 of Reference 1, only items that have a defined seismic licensing basis (Seismic Category I) are to be included in SWEL 1. Each item on the SSEL was reviewed to determine if it had a defined seismic licensing basis. All items identified as Seismic Category I, as defined in Section 12 of the PINGP USAR (Reference 2), were identified as having a defined seismic licensing basis. Electrical enclosures containing Class 1 E devices were identified as Seismic Category I.
Seismic Category I and Class 1 E determination was made through a review of current design and licensing basis documentation.
: 2. Screen #2 - Equipment or Systems This screen narrowed the scope of items to include only those that do not regularly undergo inspections to confirm that their configuration is consistent with the plant licensing basis. This screen further reduced the SWEL 1 by screening out any Safety Related SC I structures, containment penetrations, SC I piping systems, cable/conduit raceways and HVAC ductwork.
: 3. Screen #3 - Sample Considerations This screen is intended to result in a SWEL 1 that sufficiently represents a broad population of plant Seismic Category 1 equipment and systems to meet the objectives of the NRC 10 CFR 50.54(f) Letter (Reference 6). In Section 3 of Reference 1, the screen for sample considerations is Screen #4. NSPM performed Screen #4 of Reference 1 as Screen #3. The screen for determining supports of the five safety functions (Screen #3 in Reference 1) was performed as Screen #4 for the PINGP. As a result of this change in order, the Base List 1 in Table A-1 of Appendix A of this report is a list of the equipment coming out of Screen #2. Also, this report defines Screen #3 of Reference 1 as Screen #4, and vice versa for Screen #4 of Reference 1.
The following attributes were considered in the selection process for items included on SWEL 1:
A. A variety of types of systems The system is identified for each item on SWEL 1. The equipment included on SWEL 1 is a representative sample of several systems that perform one or multiple safety functions. Further, the systems represented include both frontline and support systems from those listed in Appendix E, Systems to Support Safety Function(s),of Reference 1.
B. Major new and replacement equipment The equipment included on SWEL 1 includes several items that have been modified or replaced over the past several years. Each item on SWEL 1 that is new or replaced is identified.
C. A variety of types of equipment 4-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report The equipment class is identified for each item on SWEL 1. The equipment included on SWEL 1 is a representative sample from each of the classes of equipment listed in Reference 1 Appendix B: Classes of Equipment. Where appropriate, at least one piece of equipment from each class is included on SWEL 1.
Screens #1, #2, and #3 resulted in no equipment in equipment classes (12) Air Compressors or (13) Motor Generators.
D. A variety of environments The location for each item is identified on SWEL 1. The equipment included on SWEL 1 is a representative sample from a variety of environments (locations) in the site.
E. Equipment enhanced due to vulnerabilities identified during the IPEEE program The equipment included on SWEL 1 includes several items that were enhanced as a result of the IPEEE program. Each item on SWEL 1 that was enhanced to correct an outlier from IPEEE is identified.
F. Contribution to risk To determine the relative risk significance, the Risk Achievement Worth (RAW) and Fussell-Vesely importance from the internal plant PRA were used.
Initiating events, maintenance events and human error events were not considered in the generation of this list. The thresholds for risk significance that were used (Fussell-Vesely risk > 5.OE-3, RAW > 2) are derived from the ANS/AMSE PRA Standard. This PRA Standard was endorsed by the NRC via Regulatory Guide 1.200.
In selecting equipment for SWEL 1 that met the above attributes, the equipment in the draft SWEL 1 had to first pass through Screens 1 through 4 before being assessed for being risk significant. Then risk significant equipment was identified based on the above criteria, and a subset of the more risk-significant equipment was selected to be on the final SWEL 1.
Additionally, the list of risk-significant equipment from internal plant PRA was compared with the draft SWEL 1 to confirm that a reasonable sample of risk-significant equipment (relevant for a seismic event) was included on SWEL 1.
: 4. Screen #4 - Support for the 5 Safety Functions This screen ensured that the scope of items included on the SWEL 1 are associated with maintaining the following five safety functions:
A.      Reactor Reactivity Control B.      Reactor Coolant Pressure Control C.      Reactor Coolant Inventory Control 4-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report D. Decay Heat Removal E. Containment Function These five safety functions were defined in Section 3 of Reference 1. The first four functions are associated with bringing the reactor to a safe shutdown condition. The fifth function is associated with maintaining containment integrity.
It is noted that items on SWEL 1 with a specific safety function(s) are considered frontline systems. Items with a safety-function designation of 'Support System HVAC', 'Support System AC Power', 'Support System DC Power', Engineered Safety Features Actuation System ('ESFAS') or 'Cooling Water' may be categorized as a frontline or support system. Items with a safety function designation of 'Support System HVAC', 'Support System AC Power', 'Support System DC Power',
Engineered Safety Features Actuation System ('ESFAS') or 'Cooling Water' support at least one of the five safety functions however, the specific safety function(s) are depicted as numbers 1-5 in SWEL 1, corresponding to the 5 safety functions mentioned in the EPRI guidance (Reference 1). SWEL 1 in Table A-3 of Appendix A of this report contains a legend to correlate this number to a specific safety function.
4.2.2 SWEL 2 - Spent FuelPool Related Items The process for selecting a sample of SSCs associated with the spent fuel pool (SFP) began with a review of the plant design and licensing basis documentation for the SFP and the interconnecting SFP cooling system. The following four screens narrowed the scope of SSCs to be included on the second Seismic Walkdown Equipment List (SWEL 2):
: 1.         Screen #1 - Seismic Category 1 Only those items identified as Seismic Category 1 (SC-I) are to be included on SWEL 2 with exception of the SFP structure. As described in Reference 1, the adequacy of the SFP structure is assessed by analysis as a Seismic Category 1 structure. Therefore, the SFP structure is assumed to be seismically adequate for the purposes of this program and is not included in the scope of items included on SWEL 2.
Within the SFP system, only the SFP pumps and heat exchangers are classified as Non-Safety Related, Seismic Category 1 equipment. Therefore, these equipment items are added to SWEL 2. There are no motor, air, or fluid operated valves in the SFP system flow paths.
: 2.         Screen #2 - Equipment or Systems This screen considers only those items associated with the SFP that are appropriate for an equipment walkdown process.
The spent fuel pool structure is designed as Class I structure that fully meets the seismic and tornado design criteria given in Section 12 of Reference 2. The fuel pool structure is also designed to withstand the hydraulic pressure of the contained water, as well as other credible static and dynamic load cases (Section 10.2.1.2.1 - Reference 2).
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report The SFP gates are between the pools and the transfer canal. These gates are part of the overall SFP structure and are designed as SC-1 structures; therefore, the SFP transfer gates are included in the SFP structural analysis and are thereby excluded from being added to SWEL 2.
: 3.      Screen #3 - Sample Considerations This screen represents a process that is intended to result in a SWEL 2 that sufficiently represents a broad population of SFP Seismic Category 1 equipment and systems to meet the objectives of the NRC 50.54(f) Letter. The results of this screen are provided in Table A-2 of Appendix A of this report.
The following attributes were considered in the development of SWEL 2:
A. A variety of types of systems The system is identified for each item on SWEL 2. The equipment included on SWEL 2 is a representative sample of the systems associated with the SFP and its cooling system.
B. Major new and replacement equipment The equipment included on SWEL 2 includes items that have been modified or replaced over the past several years. No such equipment has been identified.
C. A variety of types of equipment The equipment class is identified for each item on SWEL 2. The equipment included on SWEL 2 is a representative sample of each class listed in Reference 1 Appendix B: Classes of Equipment. Where appropriate, at least one piece of equipment from each class is included on SWEL 2.
The classes/types of equipment include; (5) Horizontal Pumps and (21) Tanks and Heat Exchangers. None of the valves in the SFP system are power-operated (motor, pneumatic, hydraulic); therefore, no valves are included on SWEL 2.
D. A variety of environments The location for each item is identified on SWEL 2. The equipment included on SWEL 2 is to represent a variety of environments (locations) for equipment associated with the SFP and its cooling system. All items are located in the Auxiliary Building.
: 4.      Screen #4 - Rapid Drain-Down This screen identifies items that could allow the spent fuel pool to drain rapidly.
Consistent with Reference 1, the scope of items included in this screen is limited to the hydraulic lines connected to the SFP and the equipment connected to those lines. For the purposes of this program it is assumed the SFP gates are installed and the SFP 4-5

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report cooling system is in its normal alignment for power operations. The SFP gates are passive devices that are integral to the SFP. As such, they are considered capable of withstanding a design basis earthquake without failure and do not allow for a rapid drain-down of the SFP.
The SSCs identified in this screen are not limited to SC-1 items, but are limited to those items that could allow rapid drain-down of the SFP. Rapid drain-down is defined as lowering of the water level to the top of the fuel assemblies within 72 hours after an SSE.
Excerpts from the PINGP USAR 10.2.2 document the design features which preclude rapid drain down of the Spent Fuel Pit.
The spent fuel pool cooling system is designed to remove the heat generated by stored spent fuel elements from the spent fuel pool. System design does not incorporate redundant components except for the spent fuel pool pump and the heat exchanger.
Alternate cooling capability can be made available under anticipated malfunctions or failures; System piping is so arranged that failure of any pipeline does not drain the spent fuel pool below the top of the stored spent fuel elements.
The spent fuel pool pump suction line is located above the fuel assemblies; this prevents uncovering fuel assemblies during loss of water as a result of a possible suction line rupture.
The most serious failure of this system is complete loss of water in the storage pool. To protect against this possibility, piping connections enter the top of the spent fuel pool as stated above except for the drain connection from the transfer canal to the holdup tank recirculation pump. Even if the water in the transfer canal were completely drained, the active portion of the spent fuel would not be uncovered due to the elevation of the bottom of the gate connection in the wall separating the transfer canal from the spent fuel pool. Thus, complete siphon draining of the pool is impossible. The spent fuel pool pump suction connection only goes approximately 4 feet below the normal water level.
The cooling water return line which extends 10 feet below the normal water level is prevented from siphon draining the pool by a 0.5 inch hole in the pipe located 4 feet below the normal water level.
Based on the PING P spent fuel pool design described, the spent fuel pool does not have a rapid drain down scenario.
4.2.3 SWEL 2 Development Conclusion There are no rapid drain-down considerations included in the PINGP SWEL 2 list. The SFP is shared between both units at the PINGP. The results of the seismic walkdowns for SWEL 2 are presented in this report for the PINGP Unit 1. The seismic walkdown report for PINGP Unit 2 does not contain a discussion of SWEL 2 walkdowns.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 5   Seismic Walkdowns and Area Walk-Bys 5.1 OVERVIEW Seismic Walkdowns and Area Walk-Bys were conducted by two 2-person teams of trained Seismic Walkdown Engineers (SWE) in accordance with Reference 1. The Seismic Walkdowns and Area Walk-Bys are discussed in more detail in the following sections.
Consistent with Section 4, Seismic Walkdowns andArea Walk-Bys, of Reference 1 the SWEs used their engineering judgment, based on their experience and training, to identify potentially adverse seismic conditions. Where needed, the engineers were provided the latitude to rely upon new or existing analyses to inform their judgment.
The SWEs conducted the Seismic Walkdowns and Area Walk-Bys together as a team, in accordance with Reference 1. During these evaluations, the SWEs actively discussed their observations and judgments with each other. The results of the Seismic Walkdowns and Area Walk-Bys reported herein are based on the comprehensive and consensus agreement of the SWEs.
5.2 SEISMIC WALKDOWNS The Seismic Walkdowns focused on the seismic adequacy of the items on the SWEL 1 and SWEL 2 as provided in Appendix A of this report. The Seismic Walkdowns also evaluated the potential for nearby SSCs to cause adverse seismic interactions with the SWEL items. The seismic walkdown teams focused on the following adverse seismic conditions associated with the subject item of equipment:
* Adverse anchorage conditions
* Adverse seismic spatial interactions
* Other adverse seismic conditions The results of the seismic walkdowns have been documented on the Seismic Walkdown Checklists (SWCs) and Area Walk-by Checklists (AWCs) provided in Appendix C of Reference 1. Seismic Walkdowns were performed and a SWC completed for 80 of the 107 components identified on the PINGP Unit 1 SWEL 1 and 2 of 2 for SWEL 2. The completed SWCs are provided in Appendix B of this report. Additionally, photos have been included with most SWCs to provide a visual record of the item along with any comments noted on the SWC. Drawings and other plant records are cited in some of the SWCs, but are not included with the SWCs because they are readily retrievable documents through the site's document management system.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Seismic Walkdowns are deferred for the remaining 29 items to a unit outage or appropriate time when the equipment is accessible. These items could not be walked down during the 180 day period following the NRC's endorsement of the EPRI Report (Reference 1) due to being inaccessible. Inaccessibility of this equipment was either based on the location of the equipment, current plant conditions, or due to the electrical safety hazards posed while the equipment is operating. Appendix D of this report identifies the inaccessible equipment along with the plan for future Seismic Walkdowns.
The following subsections describe the approach followed by the SWEs to identify potentially adverse anchorage conditions, adverse seismic interactions, and other adverse seismic conditions during the Seismic Walkdowns.
5.2.1 Adverse Anchorage Conditions Guidance for identifying anchorage that could be degraded, non-conforming, or unanalyzed relied on visual inspections of the anchorage and verification of anchorage configuration. Details for these two types of evaluations are provided in the following subsections.
The evaluation of potentially adverse anchorage conditions described in this subsection applies to the anchorage connections that attach the identified item of equipment to the civil structure on which it is mounted. For example, the welded connections that secure the base of a Motor Control Center (MCC) to the concrete floor would be evaluated in this subsection. Evaluation of the connections that secure components within the MCC is covered later in the subsection "Other Adverse Seismic Conditions."
Visual Inspections The purpose of the visual inspections was to identify whether any of the following potentially adverse anchorage conditions were present:
* Bent, broken, missing, or loose hardware
* Corrosion that is more than mild surface oxidation
* Visible cracks in the concrete near the anchors
* Other potentially adverse seismic conditions Based on the results of the visual inspection, the SWEs judged whether the anchorage was potentially degraded, non-conforming, or unanalyzed. The results of the visual inspection were documented on the SWC, as appropriate. If there was clearly no evidence of degraded, nonconforming, or unanalyzed conditions, then it was indicated on the checklist and a licensing basis evaluation was not necessary. However, if it was not possible to judge whether the anchorage is degraded, nonconforming, or unanalyzed, then the condition was entered into the Corrective Action Program as a potentially adverse seismic condition.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 5.2.2 Configuration Verification In addition to the visual inspections of the anchorage as described above, for at least 50% of applicable equipment items, the configuration of the installed anchorage was verified to be consistent with existing plant documentation.
Line-mounted equipment (e.g., valves mounted on pipelines without separate anchorage) were not evaluated for anchorage adequacy and were not counted in establishing the 50% sample size.
Examples of documentation that is considered to verify that the anchorage installation configurations are consistent with the plant documentation include the following:
* Design drawings
* Seismic qualification reports of analyses or shake table tests
* IPEEE or USI A-46 program documentation, as applicable See Table 5-1 below for the accounting of the 50% anchorage configuration verifications, and the individual SWC forms in Appendix B for the specific drawings used for each anchorage configuration verification.
Table 5-1: Anchorage Configuration Confirmation No. of SWEL Line Mounted Required to SWEL          Items             Items          Verify?                    Items Verified (A)                (B)          (A-B)/2 1           107                30             39                              32 2             2                 0              1                               2 Totals         109                 30            40                               34 (11 anchorage verifications have been deferred and will be completed as outlined in Appendix D) 5.2.3 Adverse Seismic Spatial Interactions An adverse seismic spatial interaction is the physical interaction between the SWEL item and a nearby SSC caused by relative motion between the two during an earthquake. An inspection was performed in the area adjacent to and surrounding the SWEL item to identify any seismic interaction conditions that could adversely affect the capability of that SWEL item to perform its intended safety-related functions.
The three types of seismic spatial interaction effects that were considered are as follows:
* Proximity
* Failure and falling of SSCs
* Flexibility of attached lines and cables 5-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Detailed guidance for evaluating each of these types of seismic spatial interactions is described in Appendix D, Seismic Spatial Interactionof Reference 1.
The Seismic Walkdown Engineers exercised their judgment to identify seismic interaction hazards. Section 5.2.5 provides a summary of issues identified during the seismic Walkdowns.
5.2.4 Other Adverse Seismic Conditions In addition to adverse anchorage conditions and adverse seismic interactions, described above, other potentially adverse seismic conditions that could challenge the seismic adequacy of a SWEL item could have been present. Examples of the types of conditions that could pose potentially adverse seismic conditions include the following:
* Degraded conditions
* Loose or missing fasteners that secure internal or external components to equipment
          "    Large, heavy components mounted on a cabinet that are not typically included by the original equipment manufacturer
* Cabinet doors or panels that are not latched or fastened
          "    Other adverse conditions In September 2012, a revised position from the NRC Staff in regards to Seismic Walkdowns of electrical cabinets and panels was sent to all licensees through the Nuclear Energy Institute (NEI). In this document, it was communicated that it is expected that all electrical cabinets on the SWEL that can be reasonably opened without undue safety or operational hazard will be opened during the walkdown, whether or not it is necessary to look inside to check its anchorage. The NRC Staff described the visual inspection that should be made while viewing the interior of the cabinet through the door opening as including the following checks:
* Visually check for evidence that internal components are or are not adequately secured to the cabinet,
* Check whether fasteners that secure adjacent cabinets together are in place, if such fasteners are needed to prevent potentially adverse seismic interaction between the cabinets, and
* Look for "Other Adverse Seismic Conditions," as described on page 4-4 of Reference 1.
Due to the timing of this communication, PINGP did not perform all of the internal inspections of electrical cabinets and panels. The remaining inspections were deferred to a future refueling outage or another appropriate time when the equipment is accessible. The electrical cabinets and panels which still need to be internally inspected are identified in Table D-1 of Appendix D of this report. The SWCs for the equipment identified in Table D-1 that cannot be opened for internal inspections will be revised at the time of the supplemental walkdowns to indicate the results of these internal inspections.
Any other adverse seismic conditions that were identified during the Seismic Walkdowns are documented on the items' SWCs in Appendix B and Table 5-2, as applicable.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report This internal inspection of electrical cabinets and panels was performed at PINGP to the extent allowed by the plant. Any situations that posed a danger to personnel or the proper operation of the plant were deferred to a future outage and are identified in Table D-1 of Appendix D of this report. The Seismic Walkdown Checklists (SWC) for the equipment identified in Table D-1 that cannot be opened for internal inspections will be revised at the time of the supplemental walkdown to indicate the results of these internal inspections.
Any identified other adverse seismic conditions are documented on the items' SWC in Appendix B and Table 5-2, as applicable.
5.2.5 Issues Identified during Seismic Walkdowns Table 5-2 at the end of this section provides a summary of issues identified during the equipment Seismic Walkdowns. The equipment Seismic Walkdowns resulted with a total of 11 concerns identified and each of these was entered into the plant's Corrective Action Plan (CAP). All of the identified concerns were assessed and it was concluded that the anomaly or issue would not prevent the associated equipment from performing its safety-related function(s). None of the concerns identified by the SWEs during the equipment Seismic Walkdowns were judged to be potentially adverse seismic conditions that could affect the safety related functions of equipment.
5.3 AREA WALK-BYS The purpose of the Area Walk-Bys is to identify potentially adverse seismic conditions associated with other SSCs located in the vicinity of the SWEL items. Vicinity is generally defined as the room containing the SWEL item. If the room is very large (e.g.,
Turbine Hall), then the vicinity is identified based on judgment, e.g., on the order of about 35 feet from the SWEL item. This vicinity is described on the Area Walk-By Checklist (AWC), provided in Appendix C of this report. A total of 29 Area Walk-bys were performed for PINGP Unit 1.
The key examination factors that were considered during Area Walk-Bys include the following:
           " Anchorage conditions (if visible without opening equipment)
* Significantly degraded equipment in the area
           " A visual assessment (from the floor) of cable/conduit raceways and HVAC ducting (e.g., condition of supports or fill conditions of cable trays)
* Potentially adverse seismic interactions including those that could cause flooding, spray, and fires in the area
* Other housekeeping items that could cause adverse seismic interaction (including temporary installations and equipment storage)
           "   Scaffold construction was inspected to verify compliance with site procedures (Reference 38).
* General plant conditions were inspected to verify compliance with site procedures (Reference 39).
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report The Area Walk-Bys are intended to identify adverse seismic conditions that are readily identified by visual inspection, without necessarily stopping to open cabinets or taking an extended look. If a potentially adverse seismic condition was identified during the Area Walk-By, then additional time was taken, as necessary, to evaluate adequately whether there was an adverse condition and to document any findings.
The results of the Area Walk-Bys are documented on the AWCs included in Appendix C of this report. A separate AWC was filled out for each area inspected. A single AWC was completed for areas where more than one SWEL item was located.
Additional details for evaluating the potential for adverse seismic interactions that could cause flooding/ spray or fire in the area are provided in the following two subsections.
5.3.1 Seismically-Induced Flooding/SprayInteractions Seismically-induced flooding/spray interactions are the effect of possible ruptures of vessels or piping systems that could spray, flood or cascade water into the area where SWEL items are located. This type of seismic interaction was considered during the IPEEE program. Those prior evaluations were considered, as applicable, as information for the Area Walk-Bys.
One area of particular concern to the industry is threaded fire protection piping with long unsupported spans. If adequate seismic supports are present or there are isolation valves near the tanks or charging sources, flooding may not be a concern. Numerous failures have been observed in past earthquakes resulting from sprinkler head impact.
Less frequent but commonly observed failures have occurred due to flexible headers and stiff branch pipes, non-ductile mechanical couplings, seismic anchor motion and failed supports.
Examples where seismically-induced flooding/spray interactions could occur include the following:
           "   Fire protection piping with inadequate clearance around fusible-link sprinkler heads
           "   Non-ductile mechanical and threaded piping couplings can fail and lead to flooding or spray of equipment
           "   Long, unsupported spans of threaded fire protection piping
* Flexible headers with stiffly supported branch lines
           "   Non-Seismic Category I tanks The SWEs exercised their judgment to identify only those seismically-induced interactions that could lead to flooding or spray. Any seismically-induced flooding/ spray interactions that were identified during the Area Walk-bys are documented on the AWCs in Appendix C and Table 5-3 below, as applicable.
5.3.2  Seismically-Induced Fire Interactions Seismically-induced fire interactions can occur when equipment or systems containing hazardous/flammable material fail or rupture. This type of seismic interaction was considered during the IPEEE program. Those prior evaluations were considered, as applicable, as information for the Area Walk-Bys.
Examples where seismically-induced fire interactions could occur include the following:
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report
* Hazardous/flammable material stored in inadequately anchored drums, inadequately anchored shelves, or unlocked cabinets
* Natural gas lines and their attachment to equipment or buildings
* Bottles containing acetylene or similar flammable chemicals
           "   Hydrogen lines and bottles Another example where seismically-induced fire interaction could occur is when there is relative motion between a high voltage item of equipment (e.g., 4160 volt transformer) and an adjacent support structure when they have different foundations. This relative motion can cause high voltage busbars, which pass between the two, to short out against the grounded bus duct surrounding the busbars and cause a fire.
The Seismic Walkdown Engineers exercised their judgment to identify only those seismically-induced interactions that could lead to fires. Any seismically-induced fire interactions that were identified during the Area Walk-bys are documented on the AWCs in Appendix C and Table 5-3 below, as applicable.
5.3.3 Issues Identified duringArea Walk-bys During the Area Walk-Bys the SWEs identified several instances where the seismic housekeeping was not in accordance with site procedures. These instances were noted on the AWCs and the issues were entered into the site CAP. Table 5-3 at the end of this section provides a summary of the issues identified during the Area Walk-Bys. The issues are associated with Area Walk-By designations, which are provided in Appendix C.
In total, 31 issues were identified during the Area Walk-Bys and entered into the site's CAP. A total of eleven observations identified during the Area Walk-Bys are being resolved in the work management process, and are conservatively reported in this table for tracking purposes. No potentially adverse seismic conditions were identified that resulted in a seismic licensing basis evaluation.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 5-2: Prairie Island Unit 1 SWC CAP Status Equipment ID                            Description of Issue                                    CAP#                        Status Multiple open "S" hooks for lighting fixtures were identified during the                        Open - Work Request (WR) 84434, Multiple    Seismic these      Walkdowns.
occurrences   and An    actionanrequest perform      extent was   initiated toSee of condition.      track  all of Appendix    1352001     83556, and 83533 are associated with this F for all open "S" hook observations.                                                     observation.
Bottom latch has some apparent deterioration degradation due to 55000       engine vibration. This condition does not affect seismic capacity;             1353290               Closed to WR 83855.
however recommend repair for maintenance purpose.
053-321    The day tank   foundation these  anchors has    eight to appears    (7/8" notdiameter)    anchors. One of be fully seated.                  1352845      Closed to WR 83768. WR is complete.
111 M/XFMR    There is a coil of cable that looks like it is coiled up using electrical       1353147      Closed to WR 83841. WR is complete.
tape. This is not a seismic issue with 111 MXFMR.
Foreign material (black insulation 1"x 2" x 8") found behind the 12 145-122           CC pump at column base 1 -CCH-375 (support number).                       1352321                    Complete.
The conduit feeding power to CV-31652 has one conduit clamp that is missing a nut. SWE's judge existing conduit seismically adequate and acceptable. However,configuration              is still CV-31652                                                             it is recommended       1353581      Closed to WR 83924. WR is complete.
that the nut is put back on.
5-8

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 5-2: Prairie Island Unit 1 SWC CAP Status Equipment ID                            Description of Issue                            CAP#                       Status SWEs noted that CV-31652 F/R and CV-31653 F/R are mounted to a single vertical Unistrut with just one machine screw. The machine CV-31652    screws are not fully threaded into their associated nuts. Instead they    1353368     Open - WR 83878 is associated with this are approximately half threaded into the nuts. SWEs judge current                                 observation.
configuration as acceptable for seismic loading, but full thread engagement is needed.
The partition wall next to E-1 is missing all six floor bolts. The bolts E-1       connecting the partition wall to the vertical walls are in place. Is the 1357500       Closed to WR 84916 and WO 467570.
partition wall seismically qualified in this configuration?
MCC 1T2 -    There is foreign material behind the transfer switch 1, near the wall XFR SW      (an 0 ring that is red in color). It is a housekeeping issue, and not a  1352321                    Complete.
seismic concern.
035-012    There is an abandoned hanger rod in the ceiling (red tape on the tip)     1352373      Closed to WR 83651 and WO 465606.
above HX.
035-012       There is a bolt missing in a base plate next to MCC 1GA BUS 1.         1352717       Closed to WR 83744. WR is complete.
5-9

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 1 Area Walk-By CAP Status Area Walk-By                                          Description of Issue                                               CAP#               Status Designation Multiple open "S"hooks for lighting fixtures were identified during the Seismic Walkdowns.                         Open - WR 84434, 83556, Multiple    An action request was initiated to track all of these occurrences and perform an extent of               1352001  and 83533 are associated condition. See Appendix F for all open "S" hook observations.                                         with this observation.
Two drums are present under the component cooling heat exchanger to collect leak off. The 3      drums are poorly tied off by rope to a small copper drain line for the 11 component cooling               1353280       clos tomWR8353 which   is complete.
pump unit cooler.
One of the two floor brackets for the unistrut that supports the component cooling motor                           Closed to WR 83865 and 3       power cables appears to be bent and the anchor is loose. There is a tygon tube wedged                    1353327          WO 465979.
under the corner.
     -10         Missing anchor on stanchion beneath 121 Loop A Main Steam ISO Valve drain line.                        1353371     Closed to WR 83874.
10       One light fixture is abandoned in overhead near pipe support 1-CCH-31 1 and should be                    1353409     Closed to WR 83892.
removed.
13      Behind the cabinet RMU2N, one wing nut holding the emergency battery EL-28 is missing.                      N/A      WR 83724 is complete.
15      There are lighting  diffusers fluorescent        tied offon light fixture  to chains the support   grid. (within too close              -2")Unit Unit 1 1and       2 "C" to the    panels have a panel.               1352209             Open.
15         Unit 1 and Unit 2 "E" panels have side panels that have slid out of position. This is a                1352102     Closed to WR 83579, housekeeping issue and not a seismic concern,                                                  which is complete.
15        Fire extinguisher bracket 224 has a rotated bracket (into the insulation) and should be                   N/A        WR 83584 initiated.
repaired.
15      The filing cabinets adjacent to the themain   control main       board control       in both Unit 1 and Unit 2 are close to board.                                          1357683             Open.
5-10

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 1 Area Walk-By CAP Status Area Walk-By                                         Description of Issue                                              CAP#              Status Designation 15       The cart adjacent to the Protection Systems III and the cart adjacent to cabinets RPI-1, -2,            1357686            Open.
and -3 in Unit 1 are close to the equipment. The chain is not used to restrain the carts.
Closed to WR83646.
22        As a precaution, the SWEs recommend closing the door pulley "S"hook above door 228                     1352343           WR 83645 and WR 83646.
19      The 121 filtered water strainer adjacent to the diesel oil day tank skid has corroded anchors            1352851   Closed to WR 83771 and (wet environment).                                                               WR 83772.
ClosedWoe to WR  83885 and 465983.
1        The drip pan beneath the 12 containment spray pump is missing a bolt on the south side.                1353388 WO 465983.
6         Duct tape needs to be removed from the special vent zone line discussed in question 4.                1352391            Closed.
6      The light fixture above gap)theto "VFD"  cabinetsrunning the conduits    for 11 into and the 13 top charging of the pumps VFDs. is close (roughly 1     1352209            Open.
6      There are two abandoned hanger         rods above the component cooling line with hanger rod 1-          1352549   Closed to WR 83712 and RHRH-385 near MCC2K BUS 2.                                                            WO 465652.
A top cover plate wing nut is missing from the 2RE-39 radiation monitor. There is also a 5       loose screw on the side door cover. The monitor is resting on the floor near the wall, and is           1352076     Closed to WR 83571.
located between the 22 component cooling pump and the stairs to the upper level.
There were scaffold carts within 2" of touching the MCC 1L, Bus 2. The cart wheels are 7      chocked but in the wrong orientation. The cart configuration allowed the cart to slide into the          1355467            Closed.
MCC. The condition was fixed upon discovery. Site personnel chocked the wheels in the acceptable orientation.
5-11

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 1 Area Walk-By CAP Status Area Walk-By                                         Description of Issue                                         CAP#
Designation Terminal Box - A1749 (terminal box for high flux) is missing an anchor bolt to wall at the lower 8         right corner. There are three other bolts, therefore SWEL judged that the terminal bolt is         N/A        WR 83891 initiated.
seismically anchored to the wall and is acceptable.
1353367   Closed to WOWR 83876
: 81. and 16                  A wood 10"x20" insert on the floor next to the grating is a combustible.                                WO 465981.
16       The cable trays adjacent to the south wall house cables which are resting on top of, and out of, a tray that is unrestrained laterally.                            1353415   Closed to WR 83893 and WO 465985.
17               There are two loose      '"concrete anchors on the bracket supporting PI-1 7652.             N/A       WR 83868 initiated.
Closed to WR 83793 and 4348.
21                There is a missing fastener on the guard for 121 instrument air compressor.               1352975           WO WO 466348.
Closed to WR 83796 and 437.
21                     The chain fall for 2AF01301 can potentially strike MCC 1A BUS 1.                     1352961           WO WO 465937.
25                     The back cover bolts are loose for 111 M voltage regulator cabinet.                    N/A        WR 83828 initiated.
25            A conduit box is attached to Unistrut, and both screws are loose. They are located              N/A      WR 83834 is complete.
approximately 10' from the floor and above the voltage regulator.
Vertical rigid conduit to box CS1 9148 (BUS 111 safeguards SWGR unit cooler) and Panel 25         132-10 has a conduit clamp not attached to the conduit. Located on column E9, it has a             N/A      WR 83829 is complete.
misplaced loose attachment at about 10' from floor underneath duct.
25      The conduit bracket attached to the Unistrut for the conduit running to 480V Bus 111 and 112          N/A      WR 83833 is complete.
control panel seems to be loose with a gap between the bracket and the Unistrut.
5-12

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 1 Area Walk-By CAP Status Area Walk-By                                          Description of Issue                                               CAP#              Status Designation One of the two supports for a light fixture is loose from the wall and the upper anchor bolt for 25       the support is not fully engaged. SWEs judged that the light fixture will remain in place, but              N/A      WR 83834 is complete.
recommend that the bolt be tightened.
25        The conduit support on top of the RMU 213 cabinet, on the west wall, has a bolt that is not                N/A      WR 83836 is complete.
fully engaged. The support is located about 10' from floor level.
25      An electrical wire is tie wrapped to the conduit above door 54, next to an electrical cable tray.          1353147     Closed to WR 83841, which is complete.
25      A light fixture may    come inoncontact is located     top of with 11 A the flexible conduit transformer          going with only 2" ofinto the 11A transformer. It clearance.                    1353277     Closed to WR 83854.
The emergency light EL1 5, located on the safety related block wall number 26 and above the                            Closed to WR 83790, 26      test station for the breaker cabinets, has a missing wing nut on the one side for the threaded             1352966      which is complete.
rod holding EL1 5 on the wall bracket.
26      Above breaker 15-6, the conduit support attachment seems to be loose. It is connecting the                 1353223     Closed to WR 83835, conduit to the Unistrut.                                                       which is complete.
The unistrut support for panel 1LPB-4 and 1RPB3 seems to have no anchor bolts on one of the legs. There are anchor bolts for the other leg. The leg might have poor quality fillet 28          welds. 1LPB-4 is mounted on a unistrut frame that also supports 1RPB3 and the three                    1352426   Closed to WR 83676 and transformers above. The unistrut frame is clip angled to a structural column in three places                              WO 465598.
and is welded to an I-beam at both ends. Ifthere is no fillet weld on the left leg, the frame is still seismically adequate and will not pry off the wall and impact MCC 1GA Bus 1.
Closed to WR  83671 and 465605.
28                 The cover plate on the end of the MCC 1GA BUS 2 cabinet is missing a bolt.                      1352415   C WO 465605.
5-13

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 1 Area Walk-By CAP Status Area Walk-By                                       Description of Issue                                          CAP#              Status Designation 28            A single light fixture has duct tape and it needs to be removed for housekeeping.            1352391           Closed.
28        There is scaffolding tied to the spent fuel pool heat exchanger 122. One of the scaffold         1352559           Closed.
couplers is within 1"of touching CC-43-7.
There are stored Operations test equipment above the electrical cabinet 1RPB6 next to the 29      121 spent fuel pool pump. Also, there are electrical wires loosely tied around the piping next       N/A            WR 83723 to the 184 entry door.
A 3" copper line is running along the ceiling above 121 and 122 pumps. It has beam clamps                    Closed to WR 83747 and 29       in the same direction and a broken hanger rod. This configuration may be vulnerable in a          1352733          W 465742.
seismic event.
29         There is lead radiation protection shielding chained to the wall near the spent fuel pool       1352586   Open. WR 83641 is also skimming pumps. If the shielding falls, it could potentially damage the tubing.                     associated with this issue.
5-14

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 6
Licensing Basis Evaluations Section 5, Seismic Licensing Basis Evaluation,of Reference 1 provides a detailed process to perform and document seismic licensing basis evaluations of SSCs identified when potentially adverse seismic conditions are identified during the equipment Seismic Walkdowns or Area Walk-Bys. The process provides a means to identify, evaluate and document how the identified potentially adverse seismic condition meets the site's seismic licensing basis without entering the condition into the site's Corrective Action Program (CAP). Further, the process directs that if a condition cannot be readily shown to meet the seismic licensing basis, then the identified condition should be entered into the plant's CAP where it will be determined whether the condition does or does not meet the seismic licensing basis.
All potentially adverse seismic conditions that were identified during the equipment Seismic Walkdowns or Area Walk-Bys were entered into the plant's CAP. Therefore, no seismic licensing basis evaluations were completed in accordance with the process documented in Section 5 of Reference 1. Tables 5-2 and 5-3 at the end of Section 5 of this report provide a summary of the issues identified in both the Seismic Walkdowns and Area Walk-Bys.
6-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 7'
IPEEE Vulnerabilities Resolution Report In the NRC 10 CFR 50.54(f) letter (Reference 6), the NRC requested that licensees provide a list of plant-specific vulnerabilities (including any seismic anomalies, outliers, or other findings) identified by the Individual Plant Examination of External Events (IPEEE) and a description of the actions taken to eliminate or reduce them (including their completion dates), as part of NTTF Recommendation 2.3 - Seismic.
Section 7, IPEEE Vulnerabilities, of Reference 1 provides guidance for addressing and reporting the evaluations related to the Individual Plant Examination of External Events (IPEEE) program and the actions taken in response to the vulnerabilities that were identified during that program. According to the guidance in Reference 1, the submittal report should describe the actions taken to eliminate or reduce the IPEEE seismic vulnerabilities, and the date the actions were documented as complete. Table 7-1 and the following paragraphs provide this information.
On October 23, 2008, the NRC Staff transmitted a Request for Additional Information (RAI) to NSPM as part of their review of the PINGP plant license renewal application (Reference 5). The NRC's RAI "SAMA 3.c" requested the following information:
            "As stated in the IPEEE seismic analysis, several potential seismic outliers were dispositioned through an analysis process which determined that the impacted function was not required or could be recovered, or that an alternate means for performing the associated function was available... For those outliers stated as being resolved through the closure of USI A-46 (IPEEE Section A.2.4.1.1),
confirm that all corrective actions have been completed, and that their use is supported by procedures and training, as appropriate." (Reference 5)
NSPM provided a response to this RAI in a letter dated November 21, 2008 (Reference 40). In its response, NSPM stated that components listed in Section A.2.4.1.1 of the PINGP IPEEE provide a summary of the SQUG outliers that pertain to the IPEEE scope.
The NSPM RAI response also noted that in a letter from the NRC to Northern States Power dated August 5, 1998, Resolution of Unresolved Safety Issue (USI) A-46 for PINGP, Units 1 and 2 (TAC NOS. M69474 and M69475), the NRC issued a Safety Evaluation stating that the NRC had received notification that all outliers had been resolved, except for four equipment outliers. NSPM had notified the NRC of equipment outliers, resolution descriptions, and resolution timeline, if not already completed, in Attachment 2 of an RAI response letter sent to the NRC from NSPM dated November 17, 1997 (Reference 41). In this 1997 letter, NSPM committed to resolve the four remaining equipment outliers during the PINGP Unit 2 outage in December 1998 and the PINGP Unit 1 outage in May 1999.
Of those four remaining equipment outliers, three (3) were related to components listed in section A.2.4.1.1 of the Prairie Island IPEEE. The equipment included control valves CV-39409, CV-39401, and Motor Control Center MCC-2LA2. The actions taken to resolve the three outliers are described below in Table 7-1. Per the work completed as described below, all outliers identified in Section A.2.4.1.1 of the PINGP IPEEE have 7-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report been resolved. Aside from this completed work, no additional procedure changes or training was required to close identified outliers.
One of these three outliers was walked down as part of the NTTF Recommendation 2.3 Seismic Walkdowns. CV-39401 was selected as a component for SWEL 1 for PINGP Unit 1. The Seismic Walkdown Checklist for this component is provided in Appendix B of this report.
Table 7-1: Prairie Island IPEEE Seismic Vulnerabilities Equipment              Potential Failure Mode                        Resolution                    Date Description                                                                                     Completed Control valve CV-39409 was           The airline to valve CV-39409 was identified as an outlier because     relocated such that the airline is       1R20 refueling CV-39409       contact with surrounding conduits    greater than two (2) inches from other   outage in May could break the solenoid tap         electrical conduits in the area.             of 1999 connection.
The airline and associated solenoid valve for CV-39401 were rerouted so Control valve CV-39401 was           that the airline and solenoid valve are identified as an outlier because     a minimum of two inches away from        1 R20 refueling existing conduits. Also, the electrical  outage in May CV-39401       contact with surrounding conduits    junction box associated with the             of 1999 could break the solenoid tap         solenoid valve for CV-39401 was connection.                          relocated such that the box is greater than two inches from other electrical conduits in the area.
Motor Control Center MCC-2LA2 was identified as an outlier because New angle support braces were            2R19 refueling it was observed that the MCC         installed at the base of MCC-2LA2 to        outage in rocked about its weak axis when      increase the structural stability of the  November of bumped, making the welding at the     MCC.                                          1998 base suspect.
7-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 8 Peer Review A peer review team consisting of four individuals was assembled and peer reviews were performed in accordance with Section 6, Peer Reviews of (Reference 1). The Peer Review process included the following activities:
* Review of the selection of SSCs included on the SWEL
* Review of a sample of the checklists prepared for the Seismic Walkdowns and Area Walk-Bys
* Review of Licensing basis evaluations, as applicable
* Review of the decisions for entering the potentially adverse conditions into the CAP process
* Review of the submittal report
* Provide a summary report of the peer review process in the submittal report The peer reviews were performed independently from this report and the summary Peer Review Report is provided in Appendix E of this report.
8-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 9
References Reference drawings related to SWEL items are provided in the Seismic Walkdown Checklists and if applicable, in the Area-Walkdown Checklists.
: 1.      EPRI Technical Report 1025286, Seismic Walkdown Guidance for Resolution of Fukushima Near-Term Task Force Recommendation 2.3:
Seismic, dated June 2012.
: 2.      Prairie Island Nuclear Generating Plant Updated Final Safety Analysis Report (USAR), Revision 31.
: 3.      NSP (M.D. Wadley) Letter to NRC, "Response to Generic Letter 87-02, Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors, Unresolved Issue (USI) A-46," dated November 20, 1995.
: 4.      Pioneer Service & Engineering Co. Report JAB-PS-02; "Prairie Island Nuclear Generating Plant Earthquake Analysis of the Reactor-Auxiliary-Turbine Building", dated November 29, 1968.
: 5.      NRC Letter to NSPM, "Request for Additional Information Regarding the Analysis of Severe Accident Mitigation Alternatives for Prairie Island Nuclear Generating Plant, Units 1 and 2," dated October 23, 2008, ADAMs Accession No. ML082950604.
: 6.      NRC (E Leeds and M Johnson) Letter to All Power Reactor Licensees et al.,
          "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendation 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated March 12, 2012, ADAMS Accession No. ML12056A046.
: 7.      John A. Blume & Associates, Engineers, "Prairie Island Nuclear Generating Plant Earthquake Analysis: Reactor-Auxiliary-Turbine Building Response Acceleration Spectra", JAB-PS-04, February 16, 1971.
8       NRC Letter, "Endorsement of Electric Power Research Institute (EPRI) Draft Report 1025286, 'Seismic Walkdown Guidance,"' dated May 31, 2012, ADAMS Accession No. ML12145A529.
: 9.      Not used.
9-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report
: 10. NSPM Letter to NRC, "Prairie Island Nuclear Generating Plant's 120-Day Response to NRC Request for Information Pursuant to 10 CFR 50.54(f)
Regarding the Seismic Aspects of Recommendations 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated July 9, 2012.
: 11. Not used.
: 12. Not used.
: 13. Not used.
: 14. ACI 318-71, 77, 83 Building Code Requirements for Reinforced Concrete
: 15. ACI 301, Specifications for Structural Concrete for Buildings
: 16. ACI 347, Recommended Practicefor ANSI A 145.1 Concrete Formwork
: 17. ACI 305, Recommended Practicefor Hot ANSI A 170.1 Weather Concreting
: 18. ACl 211.1, Recommended Practice for Selecting Proportionsfor Normal Weight Concrete
: 19. ACl 304, Recommended Practicefor Measuring,Mixing, Transporting,and placing concrete
: 20. ACI 315, Manual of StandardPractice for Detailing Reinforced Concrete Structures
: 21. ACI 306, Recommended Practice for Cold Weather Concreting
: 22. ACI 309, Recommended Practicefor Consolidationof Concrete
: 23. ACI 308, Recommended Practicefor Curing Concrete
: 24. ACI 214, Recommended Practice for ANSI A 146.1 Evaluation of Compression Test Results of Field
: 25. ACI 311, Recommended Practice for Concrete Inspection
: 26. ACl 304, PreplacedAggregate Concrete for Structuraland Mass Concrete
: 27. Report by ACI Committee 304, Placing Concrete by Pumping Method
: 28. AISC-69,78 Specification for the Design, Fabrication,and Erection of Structural Steel for Building
: 29. AWS D1.1, Structural Welding Code
: 30. ASME Boiler & Pressure Vessel Code, Section III -
ASME-1971, S73 Division 1, Subsection NE ASME-1974, S75 Division 1, Subsection NF ASME-1 973 Division 2, ProposedStandardCode for Concrete Reactor Vessels and Containments Issued for Trial Use and Comments ASME-1980 Division 2, CC 6000 ASME-1992 1992 Addenda, Division 1, Section Xl, Subsection IWL, IWE
: 31. American Public Health Assoc. (APHA), Test Methods Sulphides in Water, StandardMethods for the Examination of Water and Waste Water 9-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report
: 32. ASTM Annual Books of ASTM Standards
: 33. CRSI, MSP-1, Manual of StandardPractice
: 34. ANSI N45.2.5, ProposedSupplementary Q.A. Requirements for Installation, Inspection and Testing of Structural Concrete and StructuralSteel During ConstructionPhase of Nuclear Power Plants
: 35. CRD, Chief of Research and Development Standards, Department of the Army, Handbook for Concrete and Cement Volume I and II, Corps of Engineers U.S. Army
: 36. ACI-349-76, 85, Code Requirements for Nuclear Safety Related Concrete Structures
: 37. AISI, Specification for design of cold-formed steel structuralmembers
: 38. Prairie Island Nuclear Generating Plant Maintenance Procedure D80, Rev.
26, "Scaffolding, Ladders and Cable Tray Platforms."
: 39. Prairie Island Nuclear Generating Plant Seismic Housekeeping Procedure H41, Rev. 12, "Control of Temporary Structures and Equipment."
: 40. NSPM (M.D. Wadley) Letter to NRC, "Responses to NRC Requests for Additional Information Dated October 23, 2008 Regarding Application for Renewed Operating Licenses," dated November 21, 2008, ADAMS Accession No. ML083370505.
: 41. NSPM (J.P. Sorensen) Letter to NRC, "Response to Request for Additional Information on the Prairie Island Nuclear Generating Plant, Units 1 and 2, Resolution of Unresolved Safety Issue A-46 (TAC Nos. M69474 and M69475)," dated November 17, 1997.
9-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report A
Equipment Lists Appendix A contains the equipment lists that were developed as part of equipment selection for the SWEL. Note that because no Rapid Drain-Down items existed for PINGP, there is no Rapid Drain-Down Equipment List.
The following contents are found in Appendix A:
Table A-i, Prairie Island Unit 1 - Base List 1 ..................................................... A-2 Table A-2, Prairie Island - Base List 2 ............................................................... A-17 Table A-3, Prairie Island Unit 1 - SWEL 1 ..................................................... A-1 8 Table A-4, Prairie Island - SW EL 2 ................................................................ A-27 A-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report A.1      Equipment Selection - Base List 1 Table A-1 is a list of the equipment coming out of Screen #2 and entering Screen #3 for development of the SWEL 1. The screens utilized for selecting equipment for the SWEL is described in Section 4 of this report. This list of initial equipment is called "Base List 1."1 Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                  Description 16143                           D1 DSL GEN ENG CRANKCASE PS 16144                           D2 DSL GEN ENG CRANKCASE PS 16206                   D1 DSL GEN CLNT FROM ENG JCKT HI TRIP TS 16207                   D2 DSL GEN CLNT FROM ENG JCKT HI TRIP TS 17700                           11 AFP LO DISCH PRESS TRIP PS 17701                           22 AFP LO DISCH PRESS TRIP PS 17704                            11 AFP LO SUCT PRESS TRIP PS 17776                           12 AFWP LO SUCT PRESS TRIP PS 17777                           12 AFP LO DISCH PRESS TRIP PS 19603                  12 & 14 FCU CLG WTR RTN ORIFICE B-P VLV ES 21005                             LOOP A CLG WTR HDR P XMTR 21006                             LOOP B CLG WTR HDR P XMTR 21033                           12 MD AUX FW PMP DSCH P XMTR 21034                           11 TD AUX FW PMP DSCH P XMTR 21230                       11 CNTMT FCU CLG WTR OUTL P XMTR 21231                       12 CNTMT FCU CLG WTR OUTL P XMTR 21232                       13 CNTMT FCU CLG WTR OUTL P XMTR 21233                       14 CNTMT FCU CLG WTR OUTL P XMTR 22017                              D1 DSL GEN RM TEMP XMTR 22024                        121 MD CLG WTR PMP AREA T XMTR B 23122                            AUX FW TO 11 STM GEN F XMTR 23127                            AUX FW TO 12 STM GEN F XMTR 23128                            AUX FW TO 21 STM GEN F XMTR 23129                            AUX FW TO 22 STM GEN F XMTR 27145                             AUX FW TO 11 STM GEN F ORIF 27147                             AUX FW TO 12 STM GEN F ORIF 31211                          CHG LN TO 21 REGEN HT EXGR CV 31420                   CHG LINE TO 22 RCS LOOP COLD LEG ISOL CV 32138                            13 FC CLG WTR RTRN ISOL MV A 32139                            13 FC CLG WTR RTRN ISOL MV B 32378                              13 FC CLG WTR INLT ISOL MV 33186                               D1 DSL GEN WTR SPLY SV 33187                               D2 DSL GEN WTR SPLY SV 33199                        11 LOOP A MN STM HDR AIR SPLY SV A 33201                       11 LOOP A MN STM HDR AIR EXHT SV A 33254                        12 LOOP B MN STM HDR AIR SPLY SV B 33255                       12 LOOP B MN STM HDR AIR EXHT SV A 33285                     11 TD AUX FW PMP RCRC/LUBE OIL CLG SV 33286                    12 MD AUX FW PMP RCRC/LUBE OIL CLG SV 33371                11 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV 33372             11 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S A-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                              Description 33373            12 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV 33374         12 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S 33375            13 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV 33376         13 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S 33377            14 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV 33378             14 FAN COIL UNIT DSCH TO GAP & STRUC DMPR SV 33644                           D1 DSL GEN AIR STRT SV A 33646                           D2 DSL GEN AIR STRT SV A 33693                     11 SCVNG & COMBTN AIR DMPR SV A 33694                     11 CLASS I ROOF EXHT FAN DMPR SV 33702                 121 CONT RM AIR HNDLR OA SPLY DMPR SV 33704                  122 CONT RM AIR HNDLR DSCH DMPR SV A 33709                    121 CONT RM PAC FLTR SPLY DMPR SV 33711                        122 CONT RM PAC FLTR SPLY SV 33821                  122 CONT RM AIR HNDLR DSCH DMPR SV B 33828                  11 SCVNG & COMBUSTION AIR DMPR SV B 33987                         121 DSL GEN RM AIR DMPR SV 37201                    11 & 13 FCU CLG WTR RTN ORIF B-P SV 37203                    12 & 14 FCU CLG WTR RTN ORIF B-P SV 55000                        DI DSL GEN GAUGE PANEL (DGP) 55300                      D1 DSL GEN ENG/GEN PANEL (EGP) 55400                           D1 DSL GEN AUX CONT PNL 55410                  D1 REMOTE CONTROLS ISOLATION PANEL 55500                        D2 DSL GEN GAUGE PANEL (DGP) 55800                      D2 DSL GEN ENG/GEN PANEL (EGP) 57303                   121 CONT RM WTR CHLLR LCL CONT PNL 57304                   122 CONT RM WTR CHLLR LCL CONT PNL 70300                              12 DD CLWP LCL PNL 70385                 121 SFGDS TRAVELING SCRN DIFF CONT PNL 70386                 122 SFGDS TRAVELING SCRN DIFF CONT PNL 032-011                 121 D1 DIESEL GENERATOR EXHAUST FAN 032-012               122 DIESEL GENERATOR ROOM EXHAUST FAN 032-041                  121 D1 DIESEL GENERATOR SUPPLY FAN 032-042                  122 D2 DIESEL GENERATOR SUPPLY FAN 032-141               121 RELAY & COMPUTER ROOMS RETURN FAN 032-231           121 D1 DIESEL GENERATOR OUTSIDE EXHAUST FAN 032-232           122 D2 DIESEL GENERATOR OUTSIDE EXHAUST FAN 032-292                         122 CONT RM CLEAN-UP FAN 034-011                                 D1 DSL GEN 034-021                            D2 DIESEL GENERATOR 045-271              121 DSL GEN OIL STOR TK SUBMERSIBLE PUMP 045-273              123 DSL GEN OIL STOR TK SUBMERSIBLE PUMP 045-301         121 DSL CLG WTR PMP OIL STOR TK SUBMERSIBLE PMP 045-302         122 DSL CLG WTR PMP OIL STOR TK SUBMERSIBLE PMP 045-591                121 CONTROL ROOM CHILLED WATER PUMP 045-592                122 CONTROL ROOM CHILLED WATER PUMP 046-031           121 D1 DIESEL GENERATOR STARTUP AIR RECEIVER 046-031A                      D1 DSL GEN START-UP AIR RCVR A A-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                   Description 046-032           122 D2 DIESEL GENERATOR STARTUP AIR RECEIVER 053-201              121 D1 DIESEL GENERATOR FUEL OIL DAY TANK 053-201                        D1 DSL GEN FUEL OIL DAY TANK 053-202              122 D2 DIESEL GENERATOR FUEL OIL DAY TANK 053-221                 121 DIESEL GENERATOR OIL STORAGE TANK 053-223                 123 DIESEL GENERATOR OIL STORAGE TANK 053-251         121 COOLING WATER PUMP DIESEL OIL STORAGE TANK 053-252         122 COOLING WATER PUMP DIESEL OIL STORAGE TANK 053-321              12 COOLING WATER PUMP DIESEL OIL DAY TANK 053-321                    12 DD CLG WTR PMP DSL OIL DAY TNK 053-381         121 CONTROL ROOM CHILLED WATER EXPANSION TANK 053-382         122 CONTROL ROOM CHILLED WATER EXPANSION TANK 053-382                      122 CONT RM CHLD WTR EXPN TNK 053-481                121 D1 DIESEL GENERATOR EXPANSION TANK 053-482                122 D2 DIESEL GENERATOR EXPANSION TANK 067-011                121 SAFEGUARD TRAVELING WATER SCREEN 067-012                122 SAFEGUARD TRAVELING WATER SCREEN 069-161               121 D1 DIESEL GENERATOR AIR INTAKE FILTER 069-162               122 D2 DIESEL GENERATOR AIR INTAKE FILTER 069-242                            122 CONT RM PAC FLTR 074-031                       121A RELAY ROOM FAN-COIL UNIT 074-032                       121B RELAY ROOM FAN-COIL UNIT 074-033                       122A RELAY ROOM FAN-COIL UNIT 074-034                       122B RELAY ROOM FAN-COIL UNIT 075-011                     121 CONTROL ROOM WATER CHILLER 075-012                     122 CONTROL ROOM WATER CHILLER 076-021                      121 CONTROL ROOM AIR HANDLER 076-022                      122 CONTROL ROOM AIR HANDLER 078-011               121 D1 DIESEL GENERATOR EXHAUST MUFFLER 078-012               122 D2 DIESEL GENERATOR EXHAUST MUFFLER 078-021             121 D1 DIESEL GENERATOR AIR INTAKE SILENCER 078-022             122 D2 DIESEL GENERATOR AIR INTAKE SILENCER 1 CRDM/XFMR                     CRDM MAIN CONTROL TRANSFORMER 101/XFMR                               101 TRANSFORMER 102/XFMR                               102 TRANSFORMER 11 BATT                             11 STATION BATTERY 11 BATT                             11 STATION BATTERY 11 BATT CHG                            11 BATTERY CHARGER 11 BATT CHG                            11 BATTERY CHARGER 11 BATT CHG/XFM                   11 BATTERY CHARGER TRANSFORMER 11 IBA/XFMR                 INTERRUPTABLE BUS AUX TRANSFORMER 11 INV                                   11 INVERTER 11 OBT/PT                      110 BT POTENTIAL TRANSFORMER 111 WXFMR                              111 M TRANSFORMER 112M/XFMR                              112M TRANSFORMER 113-011            12 CL PUMP DIESEL START-UP AIR COMPRESSOR 117-111           11 AUXILIARY FEEDWATER PUMP LUBE OIL COOLER 117-112            12 AUXILIARY FEEDWATER PUMP LUBE OIL COOLER A-4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                    Description 117-121                         12 CL PUMP GEAR OIL COOLER 11 M BAT CHG/XFM           11 MOBILE BATTERY CHARGER TRANSFORMER 11MR                        11 MISCELLANEOUS RELAY RACK 11RM                      RADIATION MONITORING RACK 11 RM 12 BATT                                     12 BATTERY 12 BATT CHG                             12 BATTERY CHARGER 12 BATT CHG/XFM                 12 BATTERY CHARGER TRANSFORMER 12 INV                                    12 INVERTER 120BT/PT                       120BT POTENTIAL TRANSFORMER 121M/XFMR                               121M TRANSFORMER 121 MR                       121 MISCELLANEOUS RELAY RACK 121SR                    121 SEISMIC RECORDER SYSTEM RACK 122M/XFMR                               122M TRANSFORMER 122MR                        122 MISCELLANEOUS RELAY RACK 123MR                        123 MISCELLANEOUS RELAY RACK 124MR                        124 MISCELLANEOUS RELAY RACK 125MR                        125 MISCELLANEOUS RELAY RACK 126MR                        126 MISCELLANEOUS RELAY RACK 12MR                        12 MISCELLANEOUS RELAY RACK 13 INV                                     13 INVERTER 132-141                         121 RELAY ROOM RETURN FAN 132-281                   11 SCREENHOUSE ROOF EXHAUST FAN 132-291             11 SCREENHOUSE DIESEL COOLING SUPPLY FAN 135-021             11 RCP SEAL WATER RETURN HEAT EXCHANGER 135-101                      12 CL PUMP DIESEL JACKET CLG HX 135-111                                    REGEN HT EX 13MR                        13 MISCELLANEOUS RELAY RACK 14 INV                                     14 INVERTER 145-041                                   11 CHG PUMP 145-042                                   12 CHG PUMP 145-071                                      11 SI PMP 145-122                                     12 CC PMP 145-201                                 11 TD AFW PUMP 145-331                                12 MD AFW PUMP 145-392                                     12 DD CLP 145-821                    12 CL PUMP CNSTNT LUBE OIL PUMP 146-011              12 CL PUMP DIESEL START-UP AIR RECEIVERS 14MR                         14 MISCELLANEOUS RELAY RACK 15 INV                                    15 INVERTER 15-2/CT1                D1 EMERG GEN CURRENT TRANSFORMER 1-52/RTA                        A - TRAIN REAC TRIP BREAKER 1-52/RTB                        B - TRAIN REAC TRIP BREAKER 153-011                        11 PRESSURIZER RELIEF TANK 153-021                          11 VOLUME CONTROL TANK 153-081                                RFLG WTR STG TK 15-5/CT1                   11 CC PUMP CURRENT TRANSFORMER 15-5/CT2                   11 CC PUMP CURRENT TRANSFORMER 15-6/CT1              101 STA AUX XFMR CURRENT TRANSFORMER A-5

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                Description 15-6/CT2              101 STA AUX XFMR CURRENT TRANSFORMER 158-011                        11 COOLING WATER STRAINER 16-1/CT1                  12 AFW PUMP CURRENT TRANSFORMER 16-1/CT2                 12 AFW PUMP CURRENT TRANSFORMER 16-2/CT1              102 STA AUX XFMR CURRENT TRANSFORMER 16-2/CT2              102 STA AUX XFMR AURRENT TRANSFORMER 16-3/CT1                  12 CC PUMP CURRENT TRANSFORMER 16-3/CT2                  12 CC PUMP CURRENT TRANSFORMER 16-7/CT1                D2 EMERG GEN CURRENT TRANSFORMER 169-031                                11 SEAL WTR INJ 169-032                                12 SEAL WTR INJ 169-061                                11 SEAL WTR INJ 169-062                                12 SEAL WTR INJ 17 INV                                  17 INVERTER 174-011                            11 CNTM FAN COIL UNIT 174-012                      12 CONTAINMENT FAN COIL UNIT 174-013                            13 CNTM FAN COIL UNIT 174-014                       14 CONTAINMENT FAN COIL UNIT 174-031           15 SAFEGUARD SWITCHGEAR FAN-COIL UNIT (4160V) 174-032           16 SAFEGUARD SWITCHGEAR FAN-COIL UNIT (4160V) 174-051         12 AUXILIARY FEEDWATER PUMP MOTOR FAN COIL UNIT 174-131                11 CHARGING PUMP MOTOR FAN-COIL UNIT 174-132                12 CHARGING PUMP MOTOR FAN-COIL UNIT 174-161               101 SAFEGUARD SWITCHGEAR FAN-COIL UNIT 174-162               102 SAFEGUARD SWITCHGEAR FAN-COIL UNIT 174-163              102A SAFEGUARD SWITCHGEAR FAN-COIL UNIT 18 NV                                   18 INVERTER 1AMR1                    MISCELLANEOUS RELAY RACK 1AMR1 1ARP1                 REACTOR PROTECTION RELAY RACK 1ARP1 1ARP2                 REACTOR PROTECTION RELAY RACK 1ARP2 1ARP3                 REACTOR PROTECTION RELAY RACK 1ARP3 1ARP4                 REACTOR PROTECTION RELAY RACK 1ARP4 1ARP5                 REACTOR PROTECTION RELAY RACK 1ARP5 1ASG1                       SAFEGUARD RELAY RACK 1ASG1 1ASG2                       SAFEGUARD RELAY RACK 1ASG2 1B1                       PROCESS PROTECTION RACK 1 B1 1B2                       PROCESS PROTECTION RACK 1 B2 1BMR1                     MISCELLANEOUS RELAY RACK 1BMR1 1BRP1                 REACTOR PROTECTION RELAY RACK 1BRP1 1BRP2                 REACTOR PROTECTION RELAY RACK 1BRP2 1BRP3                 REACTOR PROTECTION RELAY RACK 1BRP3 1BRP4                 REACTOR PROTECTION RELAY RACK 1 BRP4 1BRP5                 REACTOR PROTECTION RELAY RACK 1 BRP5 1BSG1                       SAFEGUARD RELAY RACK 1BSG1 1BSG2                       SAFEGUARD RELAY RACK 1 BSG2 1CVCS1                       PROCESS CONTROL RACK 1CVC1 1CVCS2                       PROCESS CONTROL RACK 1CVC2 1DG-3                          D1 JACKET CLNT HTR RELIEF A-6

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                   Description 1FE-1 15                    11 REAC CLNT PMP SL WTR INJ F ORIF 1FE-116                      12 REAC CLNT PMP SL WTR INJ F ORIF 1FE-820                   11 AUX FEEDWATER VLV MS-20-4 OUTL FE 1FI-1i15A                       11 REAC CLNT PMP SL WTR INJ Fl 1FI-116A                        12 REAC CLNT PMP SL WTR INJ Fl 1FT-115                     11 REAC CLNT PMP SLWTR INJ F XMTR 1FT-116                     12 REAC CLNT PMP SLWTR INJ F XMTR 1 FT-176                  12 RCP SEAL LEAKOFF HI ACC FLOW XMTR 1 FT-178                       12 RCP SEAL LEAKOFF FLOW XMTR 1 FT-464               MN STM FR 11 STM GEN CHNNL I RED F XMTR 1 FT-465              MN STM FR 11 STM GEN CHNNL IIWHITE F XMTR 1 FT-474               MN STM FR 12 STM GEN CHNNL III BLU F XMTR 1 FT-475               MN STM FR 12 STM GEN CHNNL IV YEL F XMTR 1FT-476                       12 STM GEN LOOP B FW INLT F XMTR 1 FT-494                   11 STM GEN LOOP A HI ACC STM F XMTR 1FW                            PROCESS CONTROL RACK 1 FW 1HC-431K                  1 REAC CLNT LOOP PRZR PRESS CONT STA 1HC-468                1 MN STM SAF RLF TO ATM LOOP A CONT STA 1HC-478                  MN STM SAF RLF TO ATM LOOP B CONT STA lLC-141A                   VOL CONTROL TANK LEVEL CONTROLLER 1LC-141B                   VOL CONTROL TANK LEVEL SINGLE ALARM 1LQ-141                          11 VOL CONT TNK LVL PWR SPLY 1LQ-426                     PRESSURIZER LEVEL XMTR PWR SPLY 1LQ-428                      PRESSURIZER LEVEL XMTR PWR SPLY 1LQ-461                          STM GEN LEVEL XMTR PWR SPLY 1LQ-471                          STM GEN LEVEL XMTR PWR SPLY 1 LR-428                              1 REAC PRZR LVL RCDR 1LT-112                             11 VOL CONT TNK LVL XMTR lLT-141                             11 VOL CONT TNK LVL XMTR 1LT-426             1 REAC CLNT LOOP PRZR (CHNNL I-RED) LVL XMTR 1LT-428             1 REAC CLNT LOOP PRZR (CHNNL III-BLU) LVL XMTR 1 LT-461                 11 STM GEN LOOP A CHNNL I-RED LVL XMTR 1LT-471                 12 STM GEN LOOP B CHNNL IV YEL LVL XMTR 1LT-487                         11 STM GEN LOOP A WR LVL XMTR 1 LT-488                        12 STM GEN LOOP B WR LVL XMTR 1 LT-751                11 RX VSL HEAD UPPER RNG TRN A D/P XMTR 1LT-752                  11 RX VSL HEAD FULL RNG TRN A D/P XMTR 1LT-753               11 RX VSL HEAD DYNAMIC RNG TRN A D/P XMTR 1LT-761                12 RX VSL HEAD UPPER RNG TRN B D/P XMTR 1LT-762                  12 RX VSL HEAD FULL RNG TRN B D/P XMTR 1 LT-763              12 RX VSL HEAD DYNAMIC RNG TRN B D/P XMTR 1LT-920                                  11 RWST LVL XMTR 1 LT-921                                 11 RWST LVL XMTR 1NE-51                 EXCORE DETECTION TRN A DETECTOR ASSY 1NE-52                 EXCORE DETECTION TRN B DETECTOR ASSY 1NI-51A              EXCORE DETECTION TRN A SHUTDOWN MONITOR 1NI-52A              EXCORE DETECTION TRN B SHUTDOWN MONITOR 1NM-51                      EXCORE DETECTION TRN A AMPLIFIER A-7

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                   Description 1NM-51A               EXCORE DETECTION TRN A OPTICAL ISOLATOR 1NM-52                      EXCORE DETECTION TRN B AMPLIFIER 1NR1                    NUCLEAR INSTRUMENTATION RACK 1NR1 1NR2                    NUCLEAR INSTRUMENTATION RACK 1NR2 1NR3                    NUCLEAR INSTRUMENTATION RACK 1NR3 1NR4                    NUCLEAR INSTRUMENTATION RACK 1NR4 1NU-51A         EXCORE DETECTION TRN A RACK MTD SIGNAL PROCESSOR 1NU-51 B        EXCORE DETECTION TRN A WALL MTD SIGNAL PROCESSOR 1NU-52A         EXCORE DETECTION TRN B RACK MTD SIGNAL PROCESSOR 1PLP                          PROCESS CONTROL RACK 1 PLP 1P0-429            1 REAC CLNT LOOP PRZR (CHNNL I-RED) P PWR SPLY 1PQ-431           1 REAC CLNT LOOP PRZR (CHNNL III-BLU) P PWR SPLY 1PQ-468                 STEAM PRESSURE TRANSMITTER PWR SPLY 1PQ-478                 STEAM PRESSURE TRANSMITTER PWR SPLY 1PR-429                      1 REAC CLNT LOOP PRZR PRESS RCDR 1 PR-468               11 STM GEN LOOP A STM PRESS RCDR (3 PEN) 1 PT-139                   11 REAC CLNT VOL CONT TNK RLF P XMTR 1PT-173                     11 REAC CLNT PMP SHFT SL D/P XMTR 1PT-174                      12 REAC CLNT PMP NO 1 SL D/P XMTR 1 PT-429              1 REAC CLNT LOOP PRZR (CHNNL I-RED) P XMTR 1PT-431             1 REAC CLNT LOOP PRZR (CHNNL III-BLU) P XMTR 1 PT-468                 11 STM GEN LOOP A (CHNNL I-RED) P XMTR 1 PT-469                11 STM GEN LOOP A (CHNNL II-WHI) P XMTR 1PT-478                 12 STM GEN LOOP B (CHNNL III-BLU) P XMTR 1PT-479                 12 STM GEN LOOP B (CHNNL IV-YEL) P XMTR 1PT-482                 11 STM GEN LOOP A (CHNNL III-BLU) P XMTR 1PT-483                  12 STM GEN LOOP B (CHNNL I-RED) P XMTR 1PT-709                             LOOP A RCS PRESS XMTR 1PT-710                             LOOP B RCS PRESS XMTR 1PZRHTRA/CT A                     1 PRZR HTR GRP A CURRENT XFMR A 1PZRHTRA/CT C                     1 PRZR HTR GRP A CURRENT XFMR C 1PZRHTRANPT A                    1 PRZR HTR GRP A POTENTIAL XFMR A 1PZRHTRA/PT C                    1 PRZR HTR GRP A POTENTIAL XFMR C 1PZRHTRA/XFMR                       1 PRZR HTR GRP A TRANSFORMER 1PZRHTRB/CT A                     1 PRZR HTR GRP B CURRENT XFMR A 1PZRHTRB/CT C                     1 PRZR HTR GRP B CURRENT XFMR C 1 PZRHTRB/PT A                   1 PRZR HTR GRP B POTENTIAL XFMR A 1PZRHTRB/PT C                    1 PRZR HTR GRP B POTENTIAL XFMR C 1PZRHTRB/XFMR                        1 PRZR HTR GRP B TRANSFORMER 1R1                         PROCESS PROTECTION RACK 1 R1 1 R2                        PROCESS PROTECTION RACK 1 R2 1RCS1                         PROCESS CONTROL RACK 1 RCS1 1RCS2                         PROCESS CONTROL RACK 1 RCS2 1 TT-450A                           R/E RCS TEMPERATURE TH 1TT-450B                            R/E RCS TEMPERATURE TC 1TT-451A                            R/E RCS TEMPERATURE TH 1TT-451B                            R/E RCS TEMPERATURE TC lWi                         PROCESS PROTECTION RACK       MWl A-8

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                  Description CD-34204             121 RLY RM/COMP RM FIRE PREV ISOL RTRN CD CL-25-1                           12 DDCLP JACKET HX RELIEF CL-57-3                            11 CONTM FAN COIL-RELIEF CL-57-4                            12 CONTM FAN COIL-RELIEF CL-57-5                            13 CONTM FAN COIL-RELIEF CL-57-6                            14 CONTM FAN COIL-RELIEF CV-31059                             11 AFWP MN STM THTL CV CV-31084                   11 STM GEN MN STM SAF RLF TO ATM CV CV-31089                   12 STM GEN MN STM SAF RLF TO ATM CV CV-31098                         11 LOOP A MN STM HDR ISOL CV CV-31099                         12 LOOP B MN STM HDR ISOL CV CV-31153                 11 TD AUX FW PMP RCRC/LUBE OIL CLG CV CV-31154                12 MD AUX FW PMP RCRC/LUBE OIL CLG CV CV-31205                     11 LTDN DVRSN VCT/HLD-UP TNKS CV CV-31226              1 REAC CLNT LOOP PRZR LTDN LN ISOL LCV A CV-31231                                 1 PRZR PORV B CV CV-31232                                 1 PRZR PORV A CV CV-31255               1 REAC CLNT LOOP PRZR LTDN LN ISOL LCV 2 CV-31334                      11/12 RCP SEAL BYPASS RETURN CV CV-31335                  11 REAC CLNT PMP SL WTR OUTL ISOL CV CV-31336                  12 REAC CLNT PMP SL WTR OUTL ISOL CV CV-31423                           12 DDCLP JCKT CLR OUTL CV CV-31505                          D1 DSL GEN CLG WTR SPLY CV CV-31506                          D2 DSL GEN CLG WTR SPLY CV CV-31652                         11 CLG WTR STRNR BCKWSH CV CV-31759                        122 N RLY RM FAN COIL TRN B CV CV-31760                        121 N RLY RM FAN COIL TRN A CV CV-31761                        122 S RLY RM FAN COIL TRN B CV CV-31768                      122 CONT RM A/C CHL WTR RTRN CV CV-31769           121 CONT RM CHLLR UNIT CDSR CLG WTR OUTL TCV CV-31785           122 CONT RM CHLLR UNIT CDSR CLG WTR OUTL TCV CV-31786                      121 CONT RM A/C CHL WTR RTRN CV CV-31953                             D1 DSL GEN AIR STRT CV A CV-31954                             D1 DSL GEN AIR STRT CV B CV-31955                             D2 DSL GEN AIR STRT CV A CV-31956                             D2 DSL GEN AIR STRT CV B CV-31998                          11 TD AFW PMP STM BLOCK CV CV-39201                        11 & 13 FCU CLG WTR RTN B-P CV CV-39203                    12 & 14 FCU CLG WTR RTN ORIF B-P CV CV-39401                          11/13 FCU CLG WTR SUPPLY CV CV-39402                      11/13 FCU CHILLED WTR SUPPLY CV CV-39403                          12/14 FCU CLG WTR SUPPLY CV CV-39404                      12/14 FCU CHILLED WTR SUPPLY CV CV-39405          11 SHROUD CLG COILS TR A CHILLED WTR SUPPLY CV CV-39406         12 SHROUD CLG COILS TR B CHILLED WTR SUPPLY CV CV-39407         11 SHROUD CLG COILS TR A CHILLED WTR RETURN CV CV-39408         12 SHROUD CLG COILS TR B CHILLED WTR RETURN CV CV-39409                         12/14 FCU CLG WTR RETURN CV A-10

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                               Description CV-39410                    12/14 FCU CHILLED WTR RETURN CV CV-39411                       11/13 FCU CLG WTR RETURN CV CV-39412                    11/13 FCU CHILLED WTR RETURN CV D-1                               CONTROL PANEL D-1 D1 CFRP/XFMR               D1 CLEAN FUEL RTRN PMP TRANSFORMER D1/GEN RLY PNL                       D1 EMERG GEN RELAY PNL D1/GND XFMR                  NEUTRAL GROUNDING TRANSFORMER D1-3                         GENERATOR RELAY BOX D1-3 E-1                               CONTROL PANEL E-I EM-Al                       EVENT MONITORING RACK EM-Al EM-A3                       EVENT MONITORING RACK EM-A3 EM-B1                       EVENT MONITORING RACK EM-B1 EM-B3                       EVENT MONITORING RACK EM-B3 F-1                              CONTROL PANEL F-1 G-1                               CONTROL PANEL G-1 MCC 1A1                    MOTOR CONTROL CENTER 1A BUS 1 MCC 1A2                    MOTOR CONTROL CENTER 1A BUS 2 MCC 1AA2                   MOTOR CONTROL CENTER 1AA BUS 2 MCC lAB1                   MOTOR CONTROL CENTER lAB BUS 1 MCC 1AB2                   MOTOR CONTROL CENTER lAB BUS 2 MCC 1AC1                   MOTOR CONTROL CENTER 1AC BUS 1 MCC 1AC2                   MOTOR CONTROL CENTER 1AC BUS 2 MCC 1JA1                   MOTOR CONTROL CENTER 1JA BUS 1 MCC 1JA2                   MOTOR CONTROL CENTER 1JA BUS 2 MCC 1 K1                   MOTOR CONTROL CENTER 1K BUS 1 MCC 1 K2                   MOTOR CONTROL CENTER 1K BUS 2 MCC 1 KA2                  MOTOR CONTROL CENTER 1 KA BUS 2 MCC 1L1                    MOTOR CONTROL CENTER 1L BUS 1 MCC 1 L2                   MOTOR CONTROL CENTER 1 L BUS 2 MCC 1 LA1                  MOTOR CONTROL CENTER 1 LA BUS 1 MCC 1 LA2                  MOTOR CONTROL CENTER 1 LA BUS 2 MCC 1 M1                   MOTOR CONTROL CENTER 1 M BUS 1 MCC 1 M2                   MOTOR CONTROL CENTER 1 M BUS 2 MCC 1 MA1                  MOTOR CONTROL CENTER 1 MA BUS 1 MCC 1 MA2                  MOTOR CONTROL CENTER 1 MA BUS 2 MCC 1 R1                   MOTOR CONTROL CENTER 1 R BUS 1 MCC iSi                    MOTOR CONTROL CENTER 1S BUS 1 MCC MT1                    MOTOR CONTROL CENTER 1T BUS 1 MCC 1T2                    MOTOR CONTROL CENTER 1T BUS 2 MCC 1T2/XFR SW                            MCC 1T2 XFR SW MCC 1TA1                   MOTOR CONTROL CENTER 1TA BUS 1 MCC 1TA2                   MOTOR CONTROL CENTER ITA BUS 2 MCC 1Xi                    MOTOR CONTROL CENTER lX BUS 1 MCC 1X2                    MOTOR CONTROL CENTER 1X BUS 2 MTR 111 C-21                      11 COOLING WATER STRAINER MTR 111 E-45                    11/21 AFW PUMPS UNIT COOLER MTR 111 F-31                    11 INVERTER (INSTR BUS II-WHI)
MTR 111F-32                    13 INVERTER (INSTR BUS III-BLU)
A-11

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                  Description MTR 111J-51           121-N(U2) & 121-S(U1) RELAY ROOM UNIT COOLERS MTR 112G-12               121 CONTROL ROOM CHILLED WATER PUMP MTR 121J-51           122-N(U2) & 122-S(U1) RELAY ROOM UNIT COOLERS MTR 122G-12               122 CONTROL ROOM CHILLED WATER PUMP MV-32016               11 S/G STEAM SUPPLY TO 11 TD AFW PUMP MV MV-32017                      LOOP B MN STM TO 11 TD AFWP MV MV-32025                11 TD AFW PUMP SUCT CLG WTR SUPPLY MV MV-32027                12 MD AFW PUMP SUCT CLG WTR SUPPLY MV MV-32031                         1 TURB BLDG CLG WTR HDR MV MV-32034                             121 CLWP DSCH HDR MV A MV-32035                             121 CLWP DSCH HDR MV B MV-32036                             121 CLWP DSCH HDR MV C MV-32037                             121 CLWP DSCH HDR MV D MV-32047                                 12 MSIV BYPASS MV MV-32061                   11 VOL CONT TNK TO CHG PMPS ISOL MV MV-32077                SUMP B TO 11 RHR PMP TRN A (OUTSIDE) MV MV-32132                         11 FC CLG WTR RTRN ISOL MV A MV-32133                         11 FC CLG WTR RTRN ISOL MV B MV-32135                         12 FC CLG WTR RTRN ISOL MV A MV-32136                         12 FC CLG WTR RTRN ISOL MV B MV-32138                         13 FC CLG WTR RTRN ISOL MV A MV-32139                         13 FC CLG WTR RTRN ISOL MV B MV-32141                         14 FC CLG WTR RTRN ISOL MV A MV-32142                         14 FC CLG WTR RTRN       ISOL MV B MV-32145                           11 CC HX CLG WTR INLET MV MV-32146                           12 CC HX CLG WTR INLET MV MV-32166                       1 REAC EXCS LTDN LINE ISOL MV A MV-32199                       1 REAC EXCS LTDN LINE ISOL MV B MV-32238                          13TD AUX FW TO I1NSTM GEN MV MV-32239                        11 TD AUX FW TO 12 STM GEN MV MV-32242                     11/12 AUX FW TO 11 STM GEN ISOL MV MV-32243                     11/12 AUX FW TO 12 STM GEN ISOL MV MV-32322                     11 AUX BLDG CLG WTR RTRN HDR MV MV-32332                  11 AUX BLDG CLG WTR RTRN HDR ISOL MV MV-32371               11/12 TURB OIL COOLERS CLG WTR BYPASS MV MV-32377                           11 FC CLG WTR INLT ISOL MV MV-32378                           13 FC CLG WTR INLT ISOL MV MV-32379                           12 FC CLG WTR INLT ISOL MV MV-32380                           14 FC CLG WTR INLT ISOL MV MV-32381                       12 AFWP DSCH TO 11 STM GEN MV MV-32382                       12 AFWP DSCH TO 12 STM GEN MV PNL 11                              DISTRIBUTION PANEL 11 PNL 111                        A INSTR BUS TI PANEL (WIl) 111 PNL 1111                        AC DISTRIBUTION CAB (WHI) 1111 PNL 1112                       AC DISTRIBUTION CAB (RED) 1112 PNL 1113                       AC DISTRIBUTION CAB (BLUE) 1113 PNL 1113-16                     127 MISCELLANEOUS RELAY RACK PNL 1114                        AC DISTRIBUTION CAB (YEL) 1114 A-12

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                               Description 1W2                       PROCESS PROTECTION RACK 1W2 lYl                       PROCESS PROTECTION RACK 1Y1 1Y2                       PROCESS PROTECTION RACK 1Y2 AC1 1                     BOP ANNUNCIATOR CABINET ACi 1 AC12                      BOP ANNUNCIATOR CABINET AC12 AC13                      BOP ANNUNCIATOR CABINET AC13 AC14                      BOP ANNUNCIATOR CABINET AC14 AC15                      BOP ANNUNCIATOR CABINET AC15 AC1 6                     BOP ANNUNCIATOR CABINET AC1 6 B-1                             CONTROL PANEL B-1 B11O/AUX CAB                        BUS 110 480V AUX RLY CAB B120/AUX CAB                        BUS 120 480V AUX RLY CAB B15 LOGIC-1                           BUS 15 LOGIC CAB 1 B15 LOGIC-2                           BUS 15 LOGIC CAB 2 B15/LOAD SEQ CAB         BUS 15 SAFEGUARDS LOAD SEQUENCER CABINET B15/SWGR                         BUS 15 4.16KV SWITCHGEAR B16 AUX RELAY CAB                     BUS 16 AUX RELAY CABINET B16 LOGIC-1                           BUS 16 LOGIC CAB 1 B16 LOGIC-2                           BUS 16 LOGIC CAB 2 B16/LOAD SEQ CAB         BUS 16 SAFEGUARDS LOAD SEQUENCER CABINET B16/SWGR                         BUS 16 4.16KV SWITCHGEAR BUS 111                          BUS 111 480V SWITCHGEAR BUS 112                          BUS 112 480V SWITCHGEAR BUS 121                          BUS 121 480V SWITCHGEAR BUS 122                          BUS 122 480V SWITCHGEAR BUS 13                         BUS 13 4.16KV SWITCHGEAR BUS 14                         BUS 14 4.16KV SWITCHGEAR BUS 15                            4.16KV SFGDS BUS 15 BUS 16                            4.16KV SFGDS BUS 16 C-1                             CONTROL PANEL C-1 CD-34049                      121/122 DSL GEN RM OUTS AIR CD CD-34072                     11 FCU DISCH TO CNTMT DOME CD CD-34073               11 FCU NORM DISCH TO GAP & STRUCT CD CD-34074                    12 FCU DISCH TO CNTMT DOME CD CD-34075               12 FCU NORM DISCH TO GAP & STRUCT CD CD-34076                    13 FCU DISCH TO CNTMT DOME CD CD-34077               13 FCU NORM DISCH TO GAP & STRUCT CD CD-34078                    14 FCU DISCH TO CNTMT DOME CD CD-34079                14 FCU NORM DISCH TO GAP & STRUCT CD CD-34136                        11 SCVNG & COMBTN AIR CD CD-34137                   11 CLASS I ROOF EXHT FAN DSCH CD CD-34142                   121 CONT RM AIR HNDLR OA SPLY CD CD-34143                     121 CONT RM AIR HNDLR DSCH CD CD-34144                     122 CONT RM AIR HNDLR DSCH CD CD-34145                   122 CONT RM AIR HNDLR OA SPLY CD CD-34179                      121 CONT RM PAC FLTR SPLY CD CD-34181                      122 CONT RM PAC FLTR SPLY CD CD-34203             121 RLY RM/COMP RM FIRE PREV ISOL SPLY CD A-9

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                Description PNL 1114-14                   128 MISCELLANEOUS RELAY RACK PNL 112                        INSTR BUS I PANEL (RED) 112 PNL 113                      INSTR BUS III PANEL (BLUE) 113 PNL 114                       INSTR BUS IV PANEL (YEL) 114 PNL 115                     ROD POSITION DISC SW PNL 115 PNL 116                     NON-INTERRUPTABLE PANEL 116 PNL 117                         INTERRUPTABLE PANEL 117 PNL 12                           DISTRIBUTION PANEL 12 PNL 131                        DC DISTRIBUTION PANEL 131 PNL 132                        AC DISTRIBUTION PANEL 132 PNL 132-7                    11/21 AFW PUMPS UNIT COOLER PNL 133                        AC DISTRIBUTION PANEL 133 PNL 133/XFMR                             DIST PNL 133 XFMR PNL 134                        AC DISTRIBUTION PANEL 134 PNL 135                        AC DISTRIBUTION PANEL 135 PNL 136                        AC DISTRIBUTION PANEL 136 PNL 136/XFMR                             DIST PNL 136 XFMR PNL 137                        AC DISTRIBUTION PANEL 137 PNL 15                    NUCLEAR DISTRIBUTION PANEL 15 PNL 151                           DISTRIBUTION PANEL 151 PNL 152                           DISTRIBUTION PANEL 152 PNL 153                           DISTRIBUTION PANEL 153 PNL 16                    NUCLEAR DISTRIBUTION PANEL 16 PNL 161                        DC DISTRIBUTION PANEL 161 PNL 162                        DC DISTRIBUTION PANEL 162 PNL 163                        DC DISTRIBUTION PANEL 163 PNL 17                         DC DISTRIBUTION PANEL 17 PNL 18                         DC DISTRIBUTION PANEL 18 PNL 191                         DC DISTRIBUTION PANEL 191 PNL 1EM                          DISTRIBUTION PANEL 1EM PNL 1EMA                         DISTRIBUTION PANEL 1EMA PNL 1EMA-11            ICCM UNIT 1 TRAIN A MICROPROCESSOR 1LM-750 PNL 1EMA-5                     EXCORE DET AMPLIFIER 1NM-51 PNL 1 EMA-8            TB A1688 ICCM UNIT 1 TRAIN A PLASMA DISPLAY PNL 1EMB                          DISTRIBUTION PANEL 1EMB PNL 1EMB-1 1           ICCM UNIT 1 TRAIN B MICROPROCESSOR 1 LM-760 PNL 1 EMB-3                    EXCORE DET AMPLIFIER 1 NM-52 PNL 1 EMB-8            TB 2889 ICCM UNIT 1 TRAIN B PLASMA DISPLAY RC-10-1                        PRESSURIZER RELIEF VALVE RC-10-2                        PRESSURIZER RELIEF VALVE RS-21 -1              SAFETY VALVE HEADER STM GENERATOR 11 RS-21-10              SAFETY VALVE HEADER STM GENERATOR 12 RS-21-2               SAFETY VALVE HEADER STM GENERATOR 11 RS-21-3               SAFETY VALVE HEADER STM GENERATOR 11 RS-21-4               SAFETY VALVE HEADER STM GENERATOR 11 RS-21-5               SAFETY VALVE HEADER STM GENERATOR 11 RS-21-6               SAFETY VALVE HEADER STM GENERATOR 12 RS-21-7               SAFETY VALVE HEADER STM GENERATOR 12 A-13

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                               Description RS-21-8              SAFETY VALVE HEADER STM GENERATOR 12 RS-21-9              SAFETY VALVE HEADER STM GENERATOR 12 SA-54-3                     D1 DSL GEN MAIN AIR RCVR RELIEF SA-54-6                     D2 DSL GEN MAIN AIR RCVR RELIEF SA-56-1                12 CLG WTR PUMP - DIESEL STARTING AIR SV-33133               CLG WTR TO 121 SFGRDS TRVLG SCRNS SV SV-33134               CLG WTR TO 122 SFGRDS TRVLG SCRNS SV SV-33186                           D1 DSL GEN WTR SPLY SV SV-33187                           D2 DSL GEN WTR SPLY SV SV-33188                    D1 DSL GEN CLNT EXPN TNK FILL SV SV-33189                    D2 DSL GEN CLNT EXPN TNK FILL SV SV-33199                   11 LOOP A MN STM HDR AIR SPLY SV A SV-33200                   11 LOOP A MN STM HDR AIR SPLY SV B SV-33201                   11 LOOP A MN STM HDR AIR EXHT SV A SV-33202                   11 LOOP A MN STM HDR AIR EXHT SV B SV-33204                   12 LOOP B MN STM HDR AIR SPLY SV A SV-33234            11 REAC CLNT VOL CONT TNK LVL CONT VENT SV SV-33235         11 REAC CLNT VOL CONT TNK LVL CONT MAN/AUTO SV SV-33242                        D1 DSL GEN AIR STRT VENT SV SV-33245                        D2 DSL GEN AIR STRT VENT SV SV-33254                   12 LOOP B MN STM HDR AIR SPLY SV B SV-33255                   12 LOOP B MN STM HDR AIR EXHT SV A SV-33256                   12 LOOP B MN STM HDR AIR EXHT SV B SV-33285                11 TD AUX FW PMP RCRC/LUBE OIL CLG SV SV-33286                12 MD AUX FW PMP RCRC/LUBE OIL CLG SV SV-33299                        11 TD AFW PMP STM BLOCK SV SV-33323               1 REAC CLNT LOOP PRZR LTDN LN ISOL SV 2 SV-33343                       11 CLG WTR STRNR BCKWSH SV SV-33371           11 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV SV-33372        11 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S SV-33373           12 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV SV-33374        12 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S SV-33375           13 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV SV-33376        13 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S SV-33377           14 FAN COIL UNIT DSCH TO CONTM DOME DMPR SV SV-33378           14 FAN COIL UNIT DSCH TO GAP & STRUC DMPR SV SV-33464                    12 DD CLG WTR PMP AIR MTR RS SV A SV-33465                         12 DD CLWP AIR MTR LS SV B SV-33512               1 REAC CLNT LOOP PRZR LTDN LN ISOL SV 1 SV-33578                      12 AUX FW PMP MTR UNIT CLR SV SV-33644                          D1 DSL GEN AIR STRT SV A SV-33645                          D1 DSL GEN AIR STRT SV B SV-33646                          D2 DSL GEN AIR STRT SV A SV-33669                 11 REAC CLNT PMP SL WTR OUTL ISOL SV SV-33670                 12 REAC CLNT PMP SL WTR OUTL ISOL SV SV-33693                    11 SCVNG & COMBTN AIR DMPR SV A SV-33694                    11 CLASS I ROOF EXHT FAN DMPR SV SV-33702               121 CONT RM AIR HNDLR OA SPLY DMPR SV A-14

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                                Description SV-33703                 121 CONT RM AIR HNDLR DSCH DMPR SV A SV-33704                 122 CONT RM AIR HNDLR DSCH DMPR SV A SV-33705                 122 CONT RM AIR HNDLR OA SPLY DMPR SV SV-33709                    121 CONT RM PAC FLTR SPLY DMPR SV SV-33711                        122 CONT RM PAC FLTR SPLY SV SV-33716                       122 CONT RM CHLLR CLG WTR SV SV-33717                       121 CONT RM CHLLR CLG WTR SV SV-33774                            D2 DSL GEN AIR STRT SV B SV-33776                      12 DD CLWP DSL JCKT CLR OUTL SV SV-33820                  121 CONT RM AIR HNDLR DSCH DMPR SV B SV-33821                  122 CONT RM AIR HNDLR DSCH DMPR SV B SV-33828                  11 SCVNG & COMBUSTION AIR DMPR SV B SV-33987              D1 & D2 DSL GEN OUTSIDE AIR CD-34049 TRN A S SV-37022               121 CONT RM HNDLR OA SPLY STM EXCL B SV SV-37025               122 CONT RM HNDLR OA SPLY STM EXCL A SV SV-37035                          RCS VENT SYS PRZR VENT SV SV-37036                          RCS VENT SYS PRZR VENT SV SV-37037                   RCS VENT SYS REACTOR HEAD VENT SV SV-37038                   RCS VENT SYS REACTOR HEAD VENT SV SV-37039                             RCS VENT SYS TO PRT SV SV-37040                     RCS VENT SYS TO CNTMT ATMOS SV SV-37091                          RCS VENT SYS PRZR VENT SV SV-37092                          RCS VENT SYS PRZR VENT SV SV-37093                   RCS VENT SYS REACTOR HEAD VENT SV SV-37201                    11 & 13 FCU CLG WTR RTN ORIF B-P SV SV-37203                    12 & 14 FCU CLG WTR RTN ORIF B-P SV SV-37401                         11; 13 FCU CLG WTR SUPPLY SV SV-37402                      11; 13 FCU CHILLED WTR SUPPLY SV SV-37403                         12; 14 FCU CLG WTR SUPPLY SV SV-37404                      12; 14 FCU CHILLED WTR SUPPLY SV SV-37405          11 SHROUD CLG COILS TR A CHILLED WTR SUPPLY SV SV-37406          12 SHROUD CLG COILS TR B CHILLED WTR SUPPLY SV SV-37409                        12; 14 FCU CLG WTR RETURN SV SV-37411                        11; 13 FCU CLG WTR RETURN SV SV-37460                UNIT 1 TRAIN A CHILL WTR/CLG WTR ISOL SV SV-37461                UNIT 1 TRAIN B CHILL WTR/CLG WTR ISOL SV SV-37462                UNIT 1 TRAIN A CHILL WTR/CLG WTR ISOL SV SV-37463                UNIT 1 TRAIN B CHILL WTR/CLG WTR ISOL SV TB 1203                       RELAY ROOM AUX RELAY CABINET TB 1209                           RELAY ROOM TERMINAL BOX TB 1243                           TB FOR 12 CHARGING PUMP TB 1244                           TB FOR 11 CHARGING PUMP TB Al 640              11 TD AUX FEEDWATER PUMP RELAY CABINET VC-1-1                   CHARGING PUMP SUCTION FROM RWST VC-24-1                    VOLUME CONTROL TANK RELIEF VALVE VC-25-1           RC PUMPS DISCH LINE TO SEAL WTR FILTER - RELIEF VC-26-1            1 REGEN HX LETDOWN LINE OUTLET RELIEF TO PRT VC-28-1                            11 CHG PMP DISCH RELIEF A-15

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 1 - Base List 1 Equipment Tag                           Description VC-28-2                       12 CHG PMP DISCH RELIEF ZH-16-1                       121 CHILLER OUTLET - RLF ZH-16-2                       122 CHILLER OUTLET - RLF A-16

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report A.2  Equipment Selection - Base List 2 Table A-2 is a list of the equipment resulting from Screen #3 and entering Screen #4 for the SFP. The screens utilized for selecting equipment for the SWEL is described in Sections 4 of this report. This list of initial equipment is called "Base List 2," per the guidance in Reference 1.
Table A-2: Prairie Island - Base List 2 Equipment Tag                                   Description 035-011                                     121 SFP HX 035-012                                     122 SFP HX 045-101                                    121 SFP PMP 045-102                                    122 SFP PMP A.3  Final SWEL 1 This section provides a list of the final equipment selected for PINGP's SWEL 1 in Table A-3 below. This table identifies which items were selected for anchorage configuration verification, as well as which items are being deferred due to inaccessibility. The comments column of this table identifies the following selection criteria which were utilized in Screen #4:
e "IPEEE Enhanced" identifies that this equipment was enhanced due to outliers identified during the IPEEE program.
           * "New or replaced" identifies this equipment as major new or replacement equipment.
           * "Risk Significant" identifies this equipment as risk significant.
A-17

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag                      Description                  Class'        Safety     System3    Verify        Deferred?       Comments Function              Anchorage?
22024            121 MD CLG WTR PMP AREA T XMTR B             18       1,2, 3, 4,5     ZR 032-041                 121 D1 DSL GEN SPLY FAN                 9       1,2, 3, 4,5     D1         Yes 032-292                122 CONT RM CLEAN-UP FAN                 9       1,2, 3, 4, 5    ZN 046-031 A            D1 DSL GEN START-UP AIR RCVR A             21       1,2,3,4,5       D1         Yes 053-321           12 DD CLG WTR PMP DSL OIL DAY TNK            21       1,2,3,4,5       CL         Yes 053-382            122 CONT RM CHLD WTR EXPN TNK               21       1, 2, 3, 4, 5   ZH         Yes 069-242                   122 CONT RM PAC FLTR                  0       1, 2,3, 4, 5    ZN 076-022                  122 CONT RM AIR HNDLR                 10       1,2,3,4,5       ZN         Yes 125MR                     125 MISC RELAY RACK                 20       1,2,3,4,5       MP MV-32034                 121 CLWP DSCH HDR MV A                  8       1, 2, 3, 4, 5   CL SA-54-3            D1 DSL GEN MAIN AIR RCVR RELIEF              7       1, 2,3,4, 5     SA SV-33694    11 SFGDS SCRNHSE ROOF EXHT FAN CD-34137 SV           8       1,2,3,4,5       ZR                                   New or replaced SV-37025      122 CONT RM AIR HNDLR CA SPLY CD-34145 SV          8       1, 2,3, 4, 5    ZN 22017                 D1 DSL GEN RM TEMP XMTR                 18       1,2, 3, 4,5     ZG A-18

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag              Description                  Class 1    Function Syte Verify Anchorage?
Deferred?
Dfre?
Comments Cmet SFuntyi2 55000    D1 DSL GEN GAUGE PANEL (DGP)                20       1,2,3,4,5       D1                                IPEEE Enhanced 55400        D1 DSL GEN AUX CONT PNL                 14       1,2, 3, 4,5     D1      Yes 57304    122 CONT RM CHLR LCL CONT PNL               20       1, 2, 3, 4, 5   ZH 70300            12 DD CLWP LCL PNL                  20       1,2, 3, 4, 5    CL      Yes                       IPEEE Enhanced 032-011        121 D1 DSL GEN EXHT FAN                 9       1,2,3,4,5       ZG      Yes 034-011                D1 DSL GEN                     17       1,2, 3, 4,5     D1      Yes 045-592      122 CONT RM CHLD WTR PMP                  5       1,2, 3, 4, 5    ZH      Yes 053-201    D1 DSL GEN FUEL OIL DAY TANK               21       1,2, 3, 4, 5    D1      Yes 053-481      D1 DSL GEN EXPANSION TANK                21       1, 2, 3, 4, 5   D1 075-012            122 CONT RM CHLR                   11       1,2,3,4,5       ZH                     Yes        IPEEE Enhanced 11 BATT     11 BATTERY (& BATTERY RACK)               15       1,2,3,4,5       DC      Yes                       IPEEE Enhanced 11 BATT CHG         11 BATTERY CHARGER                   16       1,2,3,4,5       DC      Yes            Yes        New or replaced, IPEEE Enhanced 111M/XFMR           111M TRANSFORMER                     4       1,2, 3, 4, 5    EB                                 Risk significant 112M/XFMR           112M TRANSFORMER                     4       1,2, 3, 4, 5    EB A-19

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag                Description                Class 1    Function2     System3    Verify        Deferred?        Comments SFuntyi2    Syte    Anchorage?7 117-111           11 TD AFW PMP L-O CLR                21             4         AF         Yes 12 BATT       12 BATTERY (&BATTERY RACK)               15       1,2, 3, 4, 5    DC        Yes                        IPEEE Enhanced New or replaced, 12 BATTERY CHARGER                  16       1,2,3,4,5       DC         Yes                       NeE     enhaced 12 BATT CHG                                                                                                             IPEEE Enhanced 122M/XFMR             122M TRANSFORMER                    4       1,2,3,4,5       EB 132-281    11 SFGDS SCRNHSE ROOF EXHT FAN               9       1, 2, 3, 4, 5   ZR        Yes             Yes        IPEEE Enhanced 135-101     12 CLG WTR PMP DSL JCKT CLG HX             21       1,2,3,4,5       CL        Yes                        IPEEE Enhanced 145-042                  12 CHG PMP                     5          1, 2, 3      VC        Yes 145-071                    11 SI PMP                    5             3          SI       Yes 145-122                   12 CC PMP                     5           2,3         CC        Yes                         Risk significant 145-201                11 TD AFW PMP                    5             4         AF        Yes 145-392             12 DD CLG WTR PMP                   6       1, 2, 3, 4, 5   CL        Yes                        IPEEE Enhanced 158-011              11 CLG WTR STRNR                   0       1,2, 3, 4,5     CL        Yes 174-013                 13 CNTMT FCU                   10             5         ZC        Yes             Yes        IPEEE Enhanced 174-031            15 SWGR RM UNIT CLR                 10       1,2,3,4,5       ZH        Yes A-20

Prairie Island Nuclear Generating Plant - Unit I Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag                    Description                    Class1        Safety2    System 3    Verify        Deferred?        Comments Function         t     Anchorage?
174-162         TRN A EVENT MON RM WEST UNIT CLR               10       1, 2, 3, 4, 5   ZH 1ASG1             SAFEGUARD RELAY RACK 1ASG1                  20       1, 2, 3, 4, 5   RP 1FT-464     MN STM FR 11 STM GEN CHNNL I RED F XMTR            18             4         RP                         Yes 1LT-428             1 PRZR (CHNL III-BLU) LVL XMTR             18             3         RP                         Yes 1LT-461      11 STM GEN LOOP A CHNNL I RED LVL XMTR            18             4         RP                         Yes 1LT-762     Ul RVLIS HEAD FULL RANGE TRN B D/P XMTR            18             3         EM 1LT-763    12 RX VSL HEAD DYNAMIC RNG TRN B D/P XMTR           18             3         EM 1LT-920                   11 RWST LVL XMTR                     18          1,2,3        EM 1 LT-921                  11 RWST LVL XMTR                     18          1,2,3        EM          Yes 1NR3                  NIS RACK III (BLU) 1NR3                20             1          NI                                   IPEEE Enhanced 1 PT-469     11 STM GEN LOOP A (CHNNL II-WHI) P XMTR           18             4         RP          Yes 1PT-479       12 STM GEN LOOP B (CHNL IV-YEL) P XMTR           18             4         RP          Yes B-1                   CONTROL PANEL B-1                     20        1,3,4,5        BM                                    IPEEE Enhanced B15 LOGIC-2             BUS 15 LOGIC RELAY CAB 2                 20       1,2,3, 4, 5     EA          Yes BUS 122               BUS 122 480V SWITCHGEAR                   2       1, 2, 3, 4, 5   EB                         Yes A-21

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag               Description                 Class 1    Function2          AnoVerify        Deferred?        Comments SFuntyio   Syte Anchorage?
BUS 16         BUS 16 4.16KV SWITCHGEAR               3        1,2,3,4,5       EA                     Yes CV-31059     11 TD AFW PMP TRIP THROTTLE CV             7              4         AF CV-31153    11 TD AFW PMP RECIRC/L-O CLG CV             7              4         AF CV-31423     12 DD CLG WTR JCKT CLR OUTL CV             7        1, 2, 3, 4, 5   CL CV-31505        D1 DSL GEN CLG WTR SPLY CV              7        1,2,3,4,5       CL CV-31652       11 CLG WTR STRNR BCKWSH CV               7        1,2, 3, 4,5     CL CV-31953         D1 DSL GEN AIR START CV A              7        1,2, 3, 4,5     D1 CV-39401         11/13 FCU CLG WTR SPLY CV              7              5         ZX                                IPEEE Enhanced CV-39405      11 CRDM SHRD CLG COIL SPLY CV             7              5         ZX                     Yes D-1               CONTROL PANEL D-1                  20             4         BM      Yes                       IPEEE Enhanced Di/GEN RLY           D1 DSL GEN RELAY PNL                20       1, 2, 3, 4, 5   D1      Yes PNL E-1               CONTROL PANEL E-1                  20       1,2, 3,4, 5     BM      Yes                       IPEEE Enhanced EM-B1          Ul EVENT MON RACK EM-B 1               20            4, 5       EM      Yes MCC WA1     MOTOR CONTROL CENTER 1A BUS 1                1       1, 2, 3, 4, 5   EB                     Yes A-22

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag                   Description                  Class'       Safety     System 3     Verify       Deferred?        Comments Function2             Anchorage?
MCC 1AB2       MOTOR CONTROL CENTER lAB BUS 2                 1       1,2, 3, 4, 5   EB          Yes            Yes        IPEEE Enhanced MCC 1K2         MOTOR CONTROL CENTER 1K BUS 2                 1       1,2,3,4,5      EB          Yes            Yes MCC 1 L2        MOTOR CONTROL CENTER 1L BUS 2                 1          1,3, 5      EB          Yes            Yes        IPEEE Enhanced MCC 1T2         MOTOR CONTROL CENTER 1T BUS 2                 1       1,2, 3, 4, 5   EB          Yes            Yes MCCST2/XFR                  MCC 1T2 XFR SW                     4       1,2, 3, 4,5    EB                                     New or replaced SW MTR 111F-31        11 INVERTER (INSTR BUS II-WHI)             16       1,2,3,4,5       IP                        Yes MTR 111 F-32       13 INVERTER (INSTR BUS III-BLU)            16       1,2, 3, 4, 5     P                        Yes MV-32017       12 SG MS SPLY TO 11 TD AFW PMP MV              8            4         MS MV-32025         11 TD AFW PMP SUCT CL SPLY MV                8            4         CL MV-32077    SUMP B TO 11 RHR PMP TRN A (OUTSIDE) MV           8           3, 4        SI MV-32133         11 FCU CLG WTR OUTL ISOL MV B                8            5         CL MV-32141         14 FCU CLG WTR OUTL ISOL MV A                8            5         CL                         Yes MV-32145             11 CC HX CLG WTR INLT MV                 8            3         CL MV-32238                 11 AFW TO 11 SG MV                   8            4         AF A-23

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag               Description                   Class'        Safety 2   System 3    Verify        Deferred?        Comments 2          Anchorage?)
Function MV-32242        11/12 AFW TO 11 SG ISOL MV                 8             4         AF MV-32380       14 FCU CLG WTR INLT ISOL MV                 8             5         CL                                     New or replaced MV-32381    12 MD AFW PMP DISCH TO 11 SG MV                8             4         AF PNL 11           DISTRIBUTION PANEL 11                   14       1,2,3,4,5       DC          Yes,           Yes        IPEEE Enhanced PNL 111         INSTR BUS 11(WHI) PNL 111                14       1,2,3,4,5        IP                        Yes PNL 113        INSTR BUS III (BLUE) PNL 113              14       1,2,3,4,5        IP                        Yes PNL 12           DISTRIBUTION PANEL 12                   14       1,2, 3, 4,5     DC                         Yes        IPEEE Enhanced PNL 133        AC DISTRIBUTION PANEL 133                 14       1, 2, 3, 4, 5   EX          Yes            Yes PNL 133/XFMR           DIST PNL 133 XFMR                     4       1,2, 3, 4,5     EX PNL 136        AC DISTRIBUTION PANEL 136                 14       1,2,3, 4, 5     EX          Yes            Yes PNL 136/XFMR            DIST PNL 136 XFMR                    4       1,2,3,4,5       EX PNL 153          DISTRIBUTION PANEL 153                  14           3, 5        DC          Yes            Yes PNL 191        DC DISTRIBUTION PANEL 191                 14          3,4,5        DC          Yes PNL 1EM                 DIST PNL 1EM                      14       1,2,3,4,5       EM                         Yes RS-21-1            11 SG MS HDR RELIEF                    7             4         MS A-24

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table A-3: Prairie Island Unit 1 - SWEL 1 Equipment Tag                             Description                        Class1      Function2       System 3          Verify       Deferred?       Comments SFuntyo                      Anchorage?
SV-33186                      D1 DSL GEN WTR SPLY SV                        8        1, 2, 3, 4,5        CL SV-33242                  D1 DSL GEN AIR START VENT SV                      8        1, 2, 3, 4, 5       D1 SV-33343                  11 CLG WTR STRNR BCKWSH SV                        8        1, 2, 3, 4, 5       CL SV-33371           11 FCU DISCH TO CNTMT DOME CD-34072 SV                   8              5             zC                             Yes SV-37460               U1 TRN A CHLD WTR/CLG WTR ISOL SV                    8        1,2, 3, 4, 5        ZX                             Yes SV-37462               U1 TRN A CHLD WTR/CLG WTR ISOL SV                    8        1,2, 3, 4, 5        ZX VC-28-2                     12 CHG PMP DISCH RELIEF                        7           1, 2,3           VC Notes:
: 1) Class - Class as defined in Appendix B of Reference 1.
: 2) Safety function - Defined as follows:
1 = Reactor Reactivity Control 2 = Reactor Coolant Pressure Control 3 = Reactor Coolant inventory Control 4 = Decay Heat Removal 5 = Containment Function
: 3) System - Identifies the system associated with the equipment. The abbreviations for these systems are listed below.
A-25

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Code              System        Code             System AF     AUXILIARY FEEDWATER      IP  INSTRUMENT POWER SOURCES AT  AUX START-UP/STDBY XFMRS    MP     MISC PLANT INSTRUMENTS BM      SITE MISCELLANEOUS      MS            MAIN STEAM MAINTENANCE CC     COMPONENT COOLING        NI    NUCLEAR INSTRUMENTATION CL         COOLING WATER        PI     ROD POSITION INDICATION D1     D1 EMERGENCY DIESEL      RC        REACTOR COOLANT D2     D2 EMERGENCY DIESEL      RP      REACTOR PROTECTION D5     D5 EMERGENCY DIESEL     SA     STATION & INSTRUMENT AIR D6     D6 EMERGENCY DIESEL      SE         STEAM EXCLUSION DC          DC AUXILIARIES      SF    SPENT FUEL POOL COOLING EA       4.16KV ELECTRICAL      SI         SAFETY INJECTION EB        480V ELECTRICAL      VC   CHEMICAL & VOLUME CONTROL EH  ELECTRO-HYDRAULIC SYSTEM   ZC         CONTAINMENT VENT EL          SITE LIGHTING      ZG         DIESEL ROOMS VENT EM       EVENT MONITORING      ZH    SAFEGUARDS CHILLED WATER EX   240/120V MISC AUXILIARIES ZR        SCREENHOUSE VENT FO              FUEL OIL        ZX   CNTMT & AUX BLDG COOLING FW             FEEDWATER        ZN    CONT/RELAY/CMPTR RM VENT A-26

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report A.4 Final SWEL 2 This section provides a list of the final equipment selected for PINGP's SWEL 2 for the SFP. Table A-4 lists the components selected for the SWEL 2 walkdowns.
Table A-4: Prairie Island - SWEL 2 Equipment Tag            Description 035-012              122 SFP HX 045-102              122 SFP PMP A-27

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report B
Seismic Walkdown Checklists (SWCs)
This appendix provides the Seismic Walkdown Checklists (SWC) completed as of November 9, 2012 for PINGP. Table B-1 provides a description of each item, anchorage configuration verification, and the checklist status for each SWC. The seismic walkdown checklists are provided after this table, and are in the same chronological order as listed in the table.
Table B-i: Prairie Island Unit 1 Completed SWCs Anchorage                    Checklist Equipment Tag          Equipment Description            Confirmed?     Comments     Status (Y/N) 22017          D1 DSL GEN RM TEMP XMTR                   No                           Y 22024 121 MD CLG WTR PMP AREA T XMRBNo                                               Common            Y XMTR  B 55000          D1 DSL GEN GAUGE PANEL (DGP)
No                           Y 55400          D1 DSL GEN AUX CONT PNL                  Yes                           Y 57304          122 CONT RM CHLR LCL CONT                 No                           N PNL 70300          12 DD CLWP LCL PNL                       Yes                           Y 032-011         121 D1 DSL GEN EXHT FAN                  Yes                           Y 032-041         121 D1 DSL GEN SPLY FAN                  Yes         Common            Y 032-292         122 CONT RM CLEAN-UP FAN                  No         Common            Y 034-011         D1 DSL GEN                               Yes                           Y 045-592         122 CONT RM CHLD WTR PMP                 Yes                           Y 046-031 A        D1 DSLAGEN START-UP AIR RCVR                                     Yes                           Y 053-201         D1 DSL GEN FUEL OIL DAY                  Yes                           Y TANK B-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table B-i: Prairie Island Unit 1 Completed SWCs Anchorage      Comments      Checklist Equipment Tag     Equipment Description         Confirmed?                   Status (Y/N) 053-321   12 DD CLG WTR PMP DSL OIL              Yes         Common           N DAY TNK 053-382   122 CONT RM CHLD WTR                   Yes         Common           Y EXPN TNK 069-242   122 CONT RM PAC FLTR                    No         Common           Y 076-022   122 CONT RM AIR HNDLR                  Yes         Common           Y 11 BATT   11 BATTERY (& BATTERY                  Yes                          Y RACK) 111M/XFMR   111M TRANSFORMER                        No                          Y 112M/XFMR   112M TRANSFORMER                        No                          Y 117-111   11 TD AFW PMP L-O CLR                  Yes                          Y 12 BATT   12 BATTERY (& BATTERY                  Yes                          Y RACK) 12 BATT CHG  12 BATTERY CHARGER                     Yes                           Y 122M/XFMR   122M TRANSFORMER                        No                           Y 125MR    125 MISC RELAY RACK                     No         Common            Y 12 CLG WTR PMP DSL JCKT                 Yes                          Y CLG HX 145-042   12 CHG PMP                              Yes                          Y 145-071   11 SI PMP                               Yes                          Y 145-122   12 CC PMP                               Yes                          Y 145-201   11 TD AFW PMP                           Yes                          Y 145-392   12 DD CLG WTR PMP                       Yes                          Y 158-011   11 CLG WTR STRNR                        Yes                          Y B-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table B-i: Prairie Island Unit 1 Completed SWCs Anchorage                    Checklist Equipment Tag      Equipment Description         Confirmed?      Comments     Status (Y/N) 174-031    15 SWGR RM UNIT CLR                     Yes                           N 174-162    TRN A EVENT MON RM WEST                  No                           Y UNIT CLR lASGi     SAFEGUARD RELAY RACK                     No                           Y 1ASG1 1LT-762    Ul RVLIS HEAD FULL RANGE                 No                           Y TRN B D/P XMTR 1LT-763    12 RX VSL HEAD DYNAMIC                   No                           Y RNG TRN B D/P XMTR 1LT-920    11 RWST LVL XMTR                         No                           Y 1LT-921    11 RWST LVL XMTR                        Yes                           Y 1NR3     NIS RACK III (BLU) 1NR3                  No                           Y 1PT-469    11 STM GEN LOOP A (CHNNL                Yes                           Y II-WHI) P XMTR 1 PT-479   12 STM GEN LOOP B (CHNL IV-              Yes                          Y YEL) P XMTR B-1     CONTROL PANEL B-1                        No                           Y B15 LOGIC-2  BUS 15 LOGIC RELAY CAB 2                 Yes                          N CV-31059    11 TD AFW PMP TRIP                       No                           Y THROTTLE CV CV-31 153   11 TD AFW PMP RECIRC/L-O                 No                           Y CLG CV CV-31423    12 DD CLG WTR JCKTCLR                    No                           Y OUTL CV CV-31 505   D1 DSL GEN CLG WTR SPLY                  No                           Y CV CV-31 652   11 CLG WTR STRNR BCKWSH                  No                           Y CV B-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table B-i: Prairie Island Unit 1 Completed SWCs Anchorage      Comments      Checklist Equipment Tag      Equipment Description         Confirmed?                 Status (Y/N)
CV-31953    D1 DSL GEN AIR START CV A               No                          Y CV-39401   11/13 FCU CLG WTR SPLY CV               No                           N D-1      CONTROL PANEL D-1                      Yes                          Y DI/GEN RLY PNL D1 DSL GEN RELAY PNL                   Yes                          Y E-1      CONTROL PANEL E-1                      Yes                           N EM-B1     Ul EVENT MON RACK EM-R1                Yes                           N MCC 1T2/XFR SW MCC 1T2 XFR SW                          No                          N MV-32017    12 SG MS SPLY TO 11 TD AFW              No                           Y PMP MV MV-32025   11 TD AFW PMP SUCT CL SPLY              No                           Y MV MV-32034    121 CLWP DSCH HDR MV A                  No         Common            Y MV-32077   SUMP BTO 11 RHR PMP TRNA                No                           Y (OUTSIDE) MV MV-32133   11 FCU CLG WTR OUTL ISOL                No                           Y MV B MV-32145   11 CC HX CLG WTR INLT MV                No                           Y MV-32238   11 AFW TO 11 SG MV                      No                           Y MV-32242   11/12 AFW TO 11 SG ISOL MV              No                           Y MV-32380   14 FCU CLG WTR INLT ISOL                No                           Y MV MV-32381   12 MD AFW PMP DISCH TO 11No                                          Y SG MV PNL 133/XFMR  DIST PNL 133 XFMR                       No                           Y PNL 136/XFMR  DIST PNL 136 XFMR                       No                           Y B-4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table B-i: Prairie Island Unit 1 Completed SWCs Anchorage                    Checklist Equipment Tag     Equipment Description          Confirmed?     Comments    Status (YIN)
PNL 191    DC DISTRIBUTION PANEL 191              Yes                          Y RS-21-1    11 SG MS HDR RELIEF                     No                           Y SA-54-3    D1 DSL GEN MAIN AIR RCVR                No         Common            Y RELIEF SV-33186    D1 DSL GEN WTR SPLY SV                  No                           Y SV-33242    D1 DSL GEN AIR START VENT               No SV SV-33343    11 CLG WTR STRNR BCKWSH                 No                           Y SV 11 SFGDS SCRNHSE ROOF EXHT FAN CD-34137 SV 122 CONT RM AIR HNDLR OA SPLY CD-34145 SV SV-37462    Ul TRN A CHLD WTR/CLG WTR               No ISOL SV VC-28-2    12 CHG PMP DISCH RELIEF                 No                           Y 035-012    122 SFP HX                             Yes         SWEL 2            Y 045-102    122 SFP PMP                            Yes         SWEL 2            Y B-5

Sheet i of 2 Status: Y[J N-I] U-Seismic Walkkdown Checklist (SWC)
Equipment 1I) No. 22017                           Equip. Class, (19) Temperature Sensors Equipment Description D1 DSL GEN RM TEMP XMTR Location: Bldg. TURB                Floor El. _       _       Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YLJ NO of the 50% of SWEL items requiring such verification)?
Wall mounted by four 1/4" concrete expansion anchor.
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YN NEI UE- N/ACl
: 3. Is the anchorage free of corrosion that is more than mild surface           YO NEIl UVE] N/ADl oxidation?
The anchorageis clean and coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YZ NEil UC N/AC
: 5. Is the anchorage configuration consistent with plant documentation?          YC- NEI UO N/AH (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YM ND UE1 potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIET-ARY           !NFOPWATIeN              Wt't'ttt1ULt:  t'ft:)   PU11:        VMMn=!
Sheet 2 of 2 Status: YUJ NnI    Ut]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 22017                       Equip. Class, (19) Temperature Sensors Equipment Description D1 DSL GEN RM TEMP XMTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       Y0 NI U] N/AC
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YI NEI UC N/AC and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?               Y0 NC UC NIAC
: 10. Based on the above seismic interaction evaluations, is equipment free      Y1Nr      UC of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        YN NC UC adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Wally Diordievic 40VX                       Date:     / 6 1LM      12, Kyle Kriesel       A//          9*                                   Date:    OAIIz

PROPRIETARY TNFORDCeT I ON                       WITTHHOTLD    l'ROII  *T'"'L ie PUD'                    ERB' Sheet 1 of 8 Status: YH Nn-] U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 22024                            Equip. Class' (19) TemperatureSensors Equipment Description 121 MD CLG WTR PMPAREA T XMTR B Location: Bldg. SSCN                Floor El. NE      U      Room, Area SOUTH Manufacturer, Model, Etc. (optional but recommended)              Foxboro Model 630 Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one      Y[I NM of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                YN NEI U-- N/AD The Seismic Walkdown Engineers (SWEs) noted different size anchors bolted to the wall. The first bolt is 7/16" in diameterand the second is 3/8" in diameter. The anchorage has adequate seismic capacity and is therefore acceptable.
: 3. Is the anchorage free of corrosion that is more than mild surface                YZ NEI U-- N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?         YN NO UW- N/AD-
: 5. Is the anchorage configuration consistent with plant documentation?               Y[-] NEI U-1 N/AN (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                YZ NEI UW-potentially adverse seismic conditions?
Enter the equipment class name from Appendix B: Classes of Equipment.

                                           ,.* T-t-* T T-*T-* *-* ,,I-,tl* '*,,, ,t,,-,lt--I,,I        -r,.l*,,rT-1 f*,-r-.I.p.R -A * -r. g-%-f*"r Sheet  2 of 8 Status: YN' N[-n U[--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 22024                                                                         Equip. Class' (19) Temperature Sensors Equipment Description 121 MD CLG WTR PMP AREA T XMTR B Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                      YO NEI UI- N/AEI
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NO UE" N/AEl and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                              Y[9 NEI UE1 N/AE-
: 10. Based on the above seismic interaction evaluations, is equipment free                                                     YO NEI UE" of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                                                      YI* NEl UE-1 adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
None.
Evaluated by: Bruce M. Lorv                                                                                      rw              Date: _/O -        7-/-...
Weep Cheropalle                                                                               ,...-:..          tn ,
t~-    12 1c1 Dlleep Cherovalle                                                         pp

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUSI   WI.THHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIET-ARY !NFGR&#xfd;&#xfd;TIGN                           WIT-11OLDE FROM E~IUBEC         BEESeE38Sb'E Sheet i of 6 Status: Y!   NF] U7 Seismic Walkdown Checklist (SWC)
Equipment ID No. 55000                            Equip. Class' (20)instrumentationand ControlPanels and Cabinets Equipment Description DQDSL GEN GAUGE PANEL (DGP)
Location: Bldg. TURB                Floor EI.*            _._ Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YEI NI0 of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           Y[9 NEI U[I N/AE-It is mounted directly to the skid. Vibration isolatorsare non-active due to new anchor age bracket,
: 3. Is the anchorage free of corrosion that is more than mild surface           YZ NEI UE' N/AZl oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YEI N5" UEJ N/AO
: 5. Is the anchorage configuration consistent with plant documentation?          YE1 NE UE N/AN (Note: This question only applies if the item is one of the 50% for
          .which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YO NEI UEJ potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

pR*PRIETARY  .R.*i  ,U.iC.I.*3...
INFORMATION            WIT-HOLDPL       .      -                     S.uR.
Sheet  2  of 6 Status: YZ NE        U[-l Seismic Walkdown Checklist (SWC)
Equipment ID No. 55000                        Equip. Class, (20) Instrumentationand Control Panelsand Cabinets Equipment Description D I DSL GEN GAUGE PANEL (DGP)
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?     Y[D NEI UD N/AU The lighting fixture "S"hooks are closed.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NEI U0 N/AO and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YZ NEI U[E N/AU1
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YN NEI UE-adversely affect the safety functions of the equipment?
Bottom latch has some apparentdeteriorationdegradationdue to engine vibration. This condition does not affect seismic capacity; however, recommend repairfor maintenance purposes.
CAP 1353290 has been initiatedto evaluate this observation. WR 83855 has also been initiated to address this observation.
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordievic                                                   Date:       /a.  /2-fi'
                                         /I KXle Kriesel                                                      Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI -WITHHOLD FRrIOI UIP I IC DISCLOSURE The remaining pages are withheld from public disclosure.

       .........................                           ......... L..F.....U..I.         DISCLOSURE Sheet i of 8 Status: YN NO* U-Seismic Walkdown Checklist (SWC)
Equipment ID No. 55400                            Equip. Class, (14) Distribution Panels Equipment Description DI DSL GENAUXCONTPNL Location: Bldg. TURB               Floor E.E           ... Room, Area EDG 0-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YZ NEI of the 50% of SWEL items requiring such verification)?
Panelis mounted to two struts, per the drawing.The two struts are mounted to the wall by two 1/2" diameter concrete expansion anchors each.
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              Y9 NEI Uil N/AL]
: 3. Is the anchorage free of corrosion that is more than mild surface              Y[  NO] U-1 N/Af-oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?       Y0 NE-] Ul    N/AE]
: 5. Is the anchorage configuration consistent with plant documentation?             YN NEI U[- N/AE]
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing NF-40307-1 was used for anchorageverification.
: 6. Based on the above anchorage evaluations, is the anchorage free of              Y[  NEI UE]
potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B; Classes of Equipment.

IERE) IUEETAPRY iiiFOI~AT-Iffl                    WIETffiefIO    FRem. PuBLTCe BDIOLOJuRE Sheet 2 of 8 Status: YZ NO UMI Seismic Walkdown Checklist (SWC)
Equipment RD No.       55400                   Equip. Class" (14) DistributionPanels Equipment Description D 1 DSL GEN AUX CONT PNL Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YN NEI UD-1 N/AO
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y0 NF- Ur        N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                Y[    NO UD N/AD The attachedlines are rigidly mounted.
: 10. Based on the above seismic interaction evaluations, is equipment free       YZ NEI U[1 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        Y[   NO U-adversely affect the safety functions of the equipment?
The internal components were inspected. No anomalies were identified.
Comments (Additional pages may be added as necessary)
                                                                . 1 Evaluated by: Walter Qordievic                                                     Date:     0     L-r    (
Kyle Kriesel/                                                       Date:   10,,2-V,' 4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETARY               ist   (SWC)           wiT-iHiiiLD FRem Fu~fLTO BisefOsuRE Sheet 1 of 14 Status: YE-- NO U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 57304                             Equip. Class, (20) Instrumentationand Control Panelsand Cabinets Equipment Description 122 CONT RM WTR CHLLR LCL CONT PNL Location: Bldg. AUX                   Floor El.      u__      Room, Area 122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YE- NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YO NO- U[] N/AL]
: 3. Is the anchorage free of corrosion that is more than mild surface             Y[   NEI U[-   N/AL]
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YZ NEI U[3 N/A[-]
No concrete, it is bolted to steel.
: 5. Is the anchorage configuration consistent with plant documentation?           YO] NEI UE' N/A0 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YZ NE] UE1 potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

       .I.-I-'.'ki             1*11-1mD                             FLU:v." "L,     _LL L',
tL3UU                 ;L' Sheet 2 of 14 Status: YE] NO UL-Seismic Walkdown Checklist (SWC)
Equipment ID No. 57304                          Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description 122 CONT RM WTR CHLLR LCL CONT PNL Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?            YZ NEI UrU N/AUl The room heateris located above the control panel 57304 and is restrainedproperly. It is not a seismic concern.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,       YEr   NZ Ur1 N/Ar-and masonry block walls not likely to collapse onto the equipment?
The lightfixture in the vicinity of the control panel has an open "S" hook connecting the fixture to its chain at the bottom and at the ceiling connection. Both "S" hooks are open. The lightfixture couldfall under seismic loading and strike SV-5730419 and CS-5731407and SA-111-13.
CAP 1352001 has been initiatedto evaluate the open "S" hooks identified during these walkdowns. In addition to the action request, WR 83556 has been initiatedto address this observation.
: 9. Do attached lines have adequate flexibility to avoid damage?                    YZ NE] UEi N/A[-]
: 10. Based on the above seismic interaction evaluations, is equipment free           YE] NO UEr of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could            YZ NEI UE]
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle        c -V -t.t k,-,, c  .,--     *,-                Date:      io* 22---)2-_ -
Bruce M. Lory        15".- ,                                                  10 - It Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSUR

Sheet i of 9 Status: Y[   NO U[-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 70300                             Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description 12 DD CLWP LCL PNL Location: Bldg. SSCN                 Floor El.
* Room, Area 12 DD CLWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YE NE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YN ND UD- N/Ar
: 3. Is the anchorage free of corrosion that is more than mild surface             YO ND Ur] N/AD oxidation?
Surface oxidation was noticed on channels supporting the panel at the base. SWEs judged that it is acceptable.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YO NDI U-     N/AD
: 5. Is the anchorage configuration consistent with plant documentation?           YN ND UE- N/AD1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
SQUG SEWs were used for anchorageverification. SWEs verified four anchors.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YO NFD U--
potentially adverse seismic conditions?
1 Enter the equipment class name from Appendix B: Classes of Equipment.

Sheet 2 of 9 Status: Y] NEI           U[]-
Seismic Walkdown Checklist (SWC)
Equipment ID No. 70300                         Equip. Class' (20) Instrumentationand Control Panelsand Cabinets Equipment Description 12 DD CLWP LCL PNL Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YED NEI UI" N/AEl
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,   YZ NEI Ui- N/AU and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                YO NEI UE- N/AU
: 10. Based on the above seismic interaction evaluations, is equipment free       YZ NEI U'-
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       Y0 NE! U[-
adversely affect the safety functions of the equipment?
The cabinet internalswere inspectedand no loose or missing component hardwarewas found.
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle          C At -t;&#xfd;&#xfd;Je                             Date:     i o - "-A - \"...
Bruce M. Lory

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS1I WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PR. PREE..... Y I. . fO-     *ie          ..    -tijWITHHOLD FROM PUBLIC DISCLOSURE Sheet 1 of 5 Status: YN NE- U-Seismic Walkdown Checklist (SWC)
Equipment ID No. 032-011                           Equip. Class, (09) Fans Equipment Description 121 DI DSL GEN EXHT FAN Location: Bldg. TURB                  Floor El.
* Room, Area EDG 0- 1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YE NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YN NE] UE] N/AL]
: 3. Is the anchorage free of corrosion that is more than mild surface            YN NE] U"] N/AL]
oxidation?
The anchorageis clean and coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YZ NEI UL] N/AD
: 5. Is the anchorage configuration consistent with plant documentation?           YN NE] UL- N/AL]
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing XH- 175-23 was used for verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YE NE] U--
potentially adverse seismic conditions?
Enter the equipment class name from Appendix B: Classes of Equipment.

FReFRiHcFARY          iiiFeRmftTiEeii          wi TfiffhOB PROPIETAY IPOR~ION PROm PUBLiC       Bi3CLO3euRR Sheet 2 of 5 Status: YED NEI UI Seismic Walkdown Checklist (SWC)
Equipment ID No. 032-011                      Equip. Class' (09) Fans Equipment Description 121 Q1 DSL GEN EXHT FAN Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      Y[K NEI UE' N/AE]
The "S"hook for the lighting fixtures appearto be closed and are not a credible hazard to fans.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YEJ N'- U[" N/ACI and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YO NE UE- N/AC
: 10. Based on the above seismic interaction evaluations, is equipment free      YO NE UE-of potentially adverse seismic interaction effects?
Other Adverse Conditions I1. Have you looked for and found no other seismic conditions that could       Y[    NEI U'-
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Drdgevic                                                     Date:           /a
                                                                                                  / /~~~1~-5-//-/
Kyle Kriesel       /$L /                                            Date:   /,    ly1     ,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOS The remaining pages are withheld from public disclosure.

PR2P5jnRjT~ftAR          TjjjpeR     T&#xfd;rIJ3P       t3TTTTTA~T-Ph  PTPPOA        P
                                                                                -ND;TPTr  =Z:QPT-.Q    r' Sheet i of 3 Status: YZ Nn U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 032-041                          Equip. Class' (09) Fans Equipment Description 121 D1 DSL GEN SPLY FAN Location: Bldg. TURB                Floor El.
* Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of fthe Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YM NE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage fice of bent, broken, missing or loose hardware?             Y9 NE] Ui N/AU]
: 3. Is the anchorage fiee of corrosion that is more than mild surface             YZ N-- U-I N/Al-1 oxidation?
The anchorageis clean and coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     Y2 NIO UEI N/AD]
: 5. Is the anchorage configuration consistent with plant documentation?           YU NI] UEI N/AE]
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing X-HIAW-1 75-24, Revision A, was used for verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YUNIOi    UI potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

Sheet 2 of 3 Status: YZ NEI UF--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 032-041                      Equip. Class' (09) Fans Equipment Description 121 D1 DSL GEN SPL Y FAN Interaction Effects
: 7. Are soft targets free friom impact by nearby equipment or structures?     YZ NOi UFJ NIAE)
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NEI UlI N/AO and masonry block walls not likely to collapse onto the equipment?
The lighting fixtures do not pose a credible hazard.
: 9. Do attached lines have adequate flexibility to avoid damage?              YM NE UE1 N/Al
: 10. Based on the above seismic interaction evaluations, is equipment free      YE NEI U0 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YN NOi ULI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by:                                                                     Date:   /.-0-o'/Z
(    Z5I     t.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DIISLOSlRI

Sheet I of 7 Status: YN NF-1 Ut-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 032-292                          Equip. Class1 (09) Fans Equipment Description 122 CONT RM CLEAN-UP FAN Location: Bldg. AUX                 Floor El.
* Room, Area 122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YEI NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YM NEI UL- N/ALI
: 3. Is the anchorage free of corrosion that is more than mild surface           YO NEI ULi N/AL!
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?   YO* NEI UIW N/AL!
: 5. Is the anchorage configuration consistent with plant documentation?         YEI] NE1 U-] N/AO (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of          YO NEI UEi potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

S RcPRIETdARY CNhPeRki           T I(SW         wiT.... hO      PROm FPUBLIC    ISCLOsU~RE Sheet 2 of 7 Status: Y[M NEI U[I Seismic Walkdown Checklist (SWC)
Equipment ID No. 032-292                        Equip. Class' (09) Fans Equipment Description 122 CONT RM CLEAN-UP FAN Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YR NEI UiD N/AD
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NDI UD- N/AD-and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                Y0 NDI UD N/ADI
: 10. Based on the above seismic interaction evaluations, is equipment free       YE    NEI UD of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        YZ NDI    UD-I adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle         C-- V- rx; IP.      -   -- V c&#xfd; AA .. Date:      to -NS-_12-_
0 Bruce Lorv                  Bruce Lov                                      J~4&iL~

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report S'UNSI -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRGPR1BT-AR*            ];NFGRMAEPiGN               PO IT-rrOrIO FROW WITHHOLDi              PUBLIC DIscLO'suRE Sheet i of 6 Status: YI NEI Ut' Seismic Walkdown Checklist (SWC)
Equipment ID No. 034-011                          Equip. Class1 (17) Engine Generators Equipment Description DI DSL GEN Location: Bldg. TURB               Floor El.      &#xfd;          Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YCD NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YN NEI U-     N/AE
: 3. Is the anchorage free of corrosion that is more than mild surface            YZ NE UE1 N/A[-E oxidation?
The anchorageis clean and coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YZ NEI UED N/A[]
Some small cracks in grout but none are at or near anchors. There is no seismic concern.
: 5. Is the anchorage configuration consistent with plant documentation?           YM NEI UE-N/AE1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Anchorage was compared to SEWS for verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YZ NEI UE]
potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

tftt(d tftt+/- tt'+/-'PdtY  +/-N t .kJftMtk'+/-*+/- kJf!     VV+/-*t'ittttjf3tj tItt:Mi iIUf!$IMit:I  tjT:!It:!T3t&#xfd;nMqM Sheet 2 of 6 Status: YN NEI        UL]
Seismic Waikdown Checklist (SWC)
Equipment ID No. 034-011                          Equip. Class' (17) Enaine Generators Equipment Description DI DSL GEN Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?            YO NE] UE' NIAE3 Some light fixtures in the area have open "S"hooks, but these light fixtures are not near enough air lines to be a credible hazard. The "S" hooks should be closed for maintenace purposes.
CAP 1352001 has been initiated to evaluate the open "S"hooks observed during the walkdowns. In addition to writing an action request, WR 83556 has been initiated to address the observations.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,       YE NEI UEI N/AE and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                     YZ NEI UE- N/AE
: 10. Based on the above seismic interaction evaluations, is equipment free            YS NEI UE]
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could             YN N[I UE]
adversely affect the safety functions of the equipment?
The rodhung unit steam heaterattachedto the piping has adequate flexibility to accommidate heatermovement, and is not a seismic concern.
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordievic                                                          Date:
KyleKrieel                  Dte:        t9,;1~I Kvle Kriesel          -,oA411&#xfd;;1-JIF Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS I    AIIT'HWHOlDI FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

T7)pn    TUMAn-J       TLIT-nnUAMIQ-1           T.T&#xfd;MT.TTTOT.P "11-1f1p..     .
Sheet 1 of 5 Status: YN NnI U]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 045-592                          Equip. Class, (05) HorizontalPumps Equipment Description 122 CONT RM CHLD WTR PMP Location: Bldg. AUX                   Floor El.
* Room, Area 122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YN NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE NEI U-- N/AD]
: 3. Is the anchorage free of corrosion that is more than mild surface            YN NDI UD1 N/AD3 oxidation?
: 4. is the anchorage fi-ee of visible cracks in the concrete near the anchors?   YE NDI U'- N/ADl
: 5. Is the anchorage configuration consistent with plant documentation?          YE ND-- UM N/AD-(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Referenced Drawing NF-38301-18for anchorageverification.
: 6. Based on the above anchorage evaluations, is the anchorage free of           YU NEI U-'
potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

PRPRETRYINFRMATIGN                      WIThhOLDI3   F~REW    PUBE31e BEE~eLU~bRE Sheet 2 of 5 Status: YN NE UM-Seismic Walkdown Checklist (SWC)
Equipment ID No. 045-592                     Equip. Classi (05) Horizontal Pumps Equipment Description 122 CONT RM CHLD WTR PMP Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YN NEI UII N/AUl
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[O NEI UE" N/AZ and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YIZ NDI U-1 N/AZ1
: 10. Based on the above seismic interaction evaluations, is equipment free     YED NEI UE-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      YED NEI UD adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: DiWeep Cherlopalle     C..                                         Date:     10 - \a               Bruce.. Lor          Bruce Lorv                                                ~r~-i8-A5-100 /2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE

I I.~I.2Q'.' I VQ~~Q ~.12.I I           :1 I           ~       JI IIZI .1     H I Sheet I of 3 Status: YZ NO] U[]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 046-031A                        Equip. Class' (21) Tanks and Heat Exchangers Equipment Description D1 DSL GEN START-UP AIR RCVR A Location: Bldg. TURB               Floor El.      &#xfd;          Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one       YIZ NVE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                 YZ NM UrJ N/A[
: 3. Is the anchorage free of corrosion that is more than mild surface                  YE NEI UO N/AM oxidation?
The anchorageis clean and coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?         Y!    NIEI U-  N/AEI
: 5. Is the anchorage configuration consistent with plant documentation?               YZ NEI     U-- N/AE (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
DrawingNF-38512-2G and Colt Industry Drawing 11866099 used for verification.
6, Based on the above anchorage evaluations, is the anchorage free of                YN NEI UO potentially adverse seismic conditions?
'Enter the equipment class name from Appendix B: Classes of Equipment.

OI YNPORMAT-1eN          WIET-!!HeOLD  FROM      PUBE31    B18ef3ECShoE Sheet 2Of 3 Status: YIZ NEI- UL-Seismic Walkdown Checklist (SWC)
Equipment ID No. 046-031A                     Equip. Class' (21) Tanks and Heat Exchang-ers Equipment Description D_ DSL GEN START-UP AIR RCVR A Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       Y0 NO UE] N/AOl 8, Are overhead equipment, distribution systems, ceiling tiles and lighting,  YN NFl UL] N/AM and masonry block walls not likely to collapse onto the equipment?
There is vertical ductwork that spans between two floors. It is rigidand therefore is not a seismic concern.
: 9. Do attached lines have adequate flexibility to avoid damage?               YN NO UO N/AO There is a conduit in contact with the 1-CHW-387 pipe support, but it is adjudged to be acceptable because there is little relative movement. It is not a seismic concern.
: 10. Based on the above seismic interaction evaluations, is equipment free      Y0 NO UO of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NO UO adversely affect the safety functions of the equipment?
There were none observed.
Comments (Additional pages may be added as necessary)
Evaluated by: Dennis Zercher                                                      Date:   10.-/12-2o,?
Walter Diordievic A&#xb6;ZZ

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SU1SINl&#xa2;*l - I.A..THHOLD FROM PUBLIC DISClOSUE1 The remaining pages are withheld from public disclosure.

PROPR!ET-ARY !NPFGlHATION                          WITHHOLG~D FREW PUDLEC- BEESeCLSURE Sheet 1 of 5 Status: YE Nr-E U7 Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-201                          Equip. Class" (21) Tanks and Heat Exchangers Equipment Description D1 DSL GEN FUEL OIL DAY TANK Location: Bldg. TURB               Floor El.                 Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YN NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YO NEI UEI N/AE
: 3. Is the anchorage free of corrosion that is more than mild surface              Y[  NEI UE[ N/AE oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YZ NEI UD- N/A-
: 5. Is the anchorage configuration consistent with plant documentation?           YZ N[-') UE- N/AE (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Comparedto SEWS, and DrawingsNF-38298-10, NF -38312-5, NF-38313-1 for anchorageverification.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YO NEI UE potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

PRpRiTARYA                                                              UBLIC             .i..RE Sheet 2 of 5 Status: YZ N[-f UF-Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-20 1                     Equip. Class1 (21) Tanks and Heat Exchangers Equipment Description DI DSL GEN FUEL OIL DAY TANK Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      Y0 Nr- UD N/AE]
The light fixtures have closed "S"hooks and are not a seismic concern.
There is no sight glass, so there are no soft target concerns,
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[j NEI UE1 N/AE]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YE NEl UE- N/A[E]
: 10. Based on the above seismic interaction evaluations, is equipment free     Y0 NE-I UE-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       Y0 NE3 UE-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordievic                                                   Date:    ,,)
Kyle Kriesel-                                                      Date:__     _ _    _   _ _

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRiBTARY             iNF(9PC?4AT-];G?4         PRORITAY wiT-iiOLED NF~TON FRO~m PUBLhIe DIEsCLOsuRE Sheet 1 of 5 Status: YE[ N[R u[-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-321                         Equip. Class, (21) Tanks and Heat Exqhangers Equipment Description 12 DO CLG WTR PMP DSL OIL DAY TNK Location: Bldg. SSCN               Floor El.                Room, Area 12 DD CLWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YER NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE1 NE UE N/AL]
The day tank foundation has eight (7/8" diameter) anchors. One of these anchors appearsto not be fully seated.
CAP 01352845 has been initiated to evaluate this observation. In addition to writing an action request, WR 83768 had been initiatedto address this observation.
: 3. Is the anchorage free of corrosion that is more than mild surface             Y* NEI UE1 N/AU oxidation?
Anchors are coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YN NE U0] N/A0
: 5. Is the anchorage configuration consistent with plant documentation?           YX NO U[] N/AU (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Verified againstdrawings NF-38350-335 and NF-38350-4.
' Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY !NFORMATIeN - NWITHHOLD FROM PUBLIC DBI3CLO3URE Sheet 2 of 5 Status: YE] N* UF-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-321                     Equip. Class' (21) ranks and Heat Exchancers Equipment Description 12 DD CLG WTR PMPDSL OIL DAY TNK
: 6. Based on the above anchorage evaluations, is the anchorage free of        YEI NEI UE potentially adverse seismic conditions?
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?     Y0 NO U0 N/AU
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y19 NEI UE N/AU and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YEK NE UEI N/An
: 10. Based on the above seismic interaction evaluations, is equipment free     YE NE UE of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YER NEI U-E adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)

PRepRiETARY iiNF0P4ATiei             wI+/-TffiOLD FROm PUBLiC DI~seLOsuRfE Sheet 3 of 5 Status: YE] No* UD Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-321             Equip. Class, (21) Tanks and Heat Exchangers Equipment Description 12 DD CLG WTR PMP DSL OIL DAY TNK Evaluated by: Walter Diordovic                             yDate:                      /    /z.s Dennis Zercher              4_________-_-__/

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report UINSI I     ITHHOD141THOl FROM PUBIIDIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 5 Status: YOI N-- UM-Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-382                           Equip. Class' (21) Tanks and Heat Exchangers Equipment Description 122 CONT RM CHLD WTR EXPN TNK Location: Bldg. AUX                  Floor El.
* Room, Area 122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YN NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YO NE] U[] N/A]
: 3. Is the anchorage free of corrosion that is more than mild surface            YZ NE] Ut N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YZ NO Ut] N/A-
: 5. Is the anchorage configuration consistent with plant documentation?          YZ N-     Ut] N/At]
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Anchorage verification was performed using SQUG SEWS. The SQUG anchoragecalculation assumes one bolt is acting in resistingall shear and all tension. Calculationsshow that the expansion anchorsize agrees with "asinstalled"anchors. Therefore, SWEs judge anchorage verification is validated based on this conservative analysis.
I Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRiE5TARY XNFGR&#xfd;&#xfd;TiON                    WIEFIIOLD3   FROM FE3BE31      DITZCOSURE Sheet 2 of 5 Status: YE NOi U-Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-382                     Equip. Class1 (21) Tanks and Heat Exchangers Equipment Description 122 CONT RM CHLD WTR EXPN TNK
: 6. Based on the above anchorage evaluations, is the anchorage free of        YE NFi UE1 potentially adverse seismic conditions?
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YE NEI U(( N/AD
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NDI UD N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YZ NDI UD] N/AD-
: 10. Based on the above seismic interaction evaluations, is equipment free     YEI NiD UD-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      YZ ND- UF-1 adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)

DDfDV)nTV'MAUX     TMT~DM1LMTn~          WiT-iiOLD6   FROm P&#xfd;PBEiC     9iseCLOZbE         \
Sheet 3 of 5 Status: YZ Nn U[I]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 053-382                Equip. Class1 (21) Tanks and Heat Exchangers Equipment Description 122 CONT RM CHLD WTR EXPN TNK Evaluated by: Dileep Cherlopalle  r- ..\a -,_*,*,12          , R,_-..,     Date:    \o- i-    \
Bruce Lory
                                 ~-~iI~II

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SIINIS        FROM PUBLIC DISRCLOSURE ITHHOWWIlDrli The remaining pages are withheld from public disclosure.

       . PROPRIET-ARkc           !NFGR&#xfd;&#xfd;T-IGN              WITHHOLD'T   FROW PTU3BELI *TESlbOSUE Sheet 1 of 12 Status: Y[N N(( ULI Seismic Walkdown Checklist (SWC)
Equipment ID No. 069-242                           Equip. Class' (00) Other Equipment Description 122 CONT RM PAC FLTR Location: Bldg. AUX                  Floor El.
* Room, Area 122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YO NM of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YN NEI      UOI  N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface           YN Ni] UI-] N/AU oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?   YEJ Nil U-] N/A]
: 5. Is the anchorage configuration consistent with plant documentation?         YO--   NO-- U-- N/AZ*
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
YEI NO] UDIA-
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?
1 Enter the equipment class name from Appendix B: Classes of Equipment.

       .,C-.,L%.
              '*J ,,C-,,L*.,J.,,,.L*,.L,,L-'I.,,L%.
                                                            ~~'            "~"'?~ TTWXWUU0=%T-T'&#xfd;
                                                    ,.,L,,L*I,L"'*,J .,*.,I.",L/-'* .L ..L "*..,/.L*l t;f'.L&#xb6; 1PT-mFT.T  f.T*J0Q Sheet 2 of 12 Status: YZ NL-- U-I Seismic Walkdown Checklist (SWC)
Equipment ID No. 069-242                                                                          Equip. Class' (00) Other Equipment Description 122 CONTRM PAC FLTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                             YN NDI U[I N/AD
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,                                                        YZ NEI UD- N/AD and masonry block walls not likely to collapse onto the equipment?
One light fixture has an open "S"hook on the bottom connection of the chain. Under earthquakeconditions SWEs judge that the light fixture will drop off the open "S"hook and swing into the filter. SWEs judged that impact is credible but not significant. The light fixture will not impact the soft target of the glass window. Therefore, the safety function is not impaired.
CAP 01352001 has been initiatedto evaluate the open "S"hooks identified during these walkdowns. In addition to writing an action request, WR 83556 has been initiatedto addressthis observation.
: 9. Do attached lines have adequate flexibility to avoid damage?                                                                     YS NDI U-- N/AD
: 10. Based on the above seismic interaction evaluations, is equipment free                                                            YZ N-- UD-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                                                             YM NEI UDI adversely affect the safety functions of the equipment?

OP    ETAr Y1r".r T        "I'i AT'             TTIT TO DT    'FRer PuT T iCTr is    3CTOs     TRE Sheet 3 of 12 Status: YO NEI U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 069-242                  Equip. Class, (00) Other Equipment Description 122 CONTRM PAC FLTR Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle     c~r.                         ,t          Date:      e - .- C- X-.
Bruce M. Lory

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! - WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 9 Status: Y[   N-- U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 076-022                          Equip. Class1 (10) Air Handlers Equipment Description 122 CONTRMAIR HNDLR Location: Bldg. AUX                 Floor El.
* Room, Area 122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YED NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YZ NI- UD- N/A--
: 3. Is the anchorage free of corrosion that is more than mild surface           YO1 NEI U[D N/AEl oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YI   NO UL- N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?         YZ NEI UZ- N/AE1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
The anchorage verification used the SQUG SEWs which states the air handleris rod hung using six - 1/2" diameterrods with vibration isolators.
: 6. Based on the above anchorage evaluations, is the anchorage free of          YZ NI UF-I potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

PRS.... TETarYChecklist       -I...        b V-r.rIrlrl%-'j. l    fr' _
JJ.L     / v' LJ i" - I  j JIO    IJU I_/ DLjrS .
Sheet 2 of 9 Status: Y[Z NEI U0-Seismic Walkdown Checklist (SWC)
Equipment ID No. 076-022                       Equip. Class' (10) Air Handlers Equipment Description 122 CONT RM AIR HNDLR Interaction Effects
: 7. Are soft targets free friom impact by nearby equipment or structures?                  YN NEI UI- N/A-1
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YS NEI U-- N/AL and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                           YN NEI UL' N/ALI
: 10. Based on the above seismic interaction evaluations, is equipment free                  YN NEI U--
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                   YN N[-- U--
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Date:            %0 - \-R_-1 2_
Evaluated by: Dileep Cherlopalle        r-. V b)    p                 ?-,,
Bruce Lory            __'     e*     *A            .

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

T~TPREPRIT-~ARY'      114FEPMATION              WITHHEI)LIJ)  FROM    ei'UJLtn   L+/-LtUUK Sheet 1 of 8 Status: YZ NEI U[
Seismic Walkdown Checklist (SWC)
Equipment ID No.          11 BATT                  Equip. Class1 (15) Batteries on Racks Equipment Description 11 BATTERY (& BATTERY RACK)
Location: Bldg. TURB                 Floor El.
* Room, Area 11 BATTRM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one     YEJ NEIl of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?               YM Nil Ul- N/All
: 3. Is the anchorage free of corrosion that is more than mild surface               YM Nil UI- N/All oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?        YED NEI UF] N/A-]
: 5. Is the anchorage configuration consistent with plant documentation?             YM NEI U- N/All (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
SQUG SEWs were referenced for anchorageverification. SWEs verified there were four anchors for each bay frame.
: 6. Based on the above anchorage evaluations, is the anchorage free of               YZ NEUI-]
potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PR",PRIET"ARY        I-  OPr1 AT-IE* N       WTf[1TTLTED   FROM    P'SleT' "     IS-IL0ST'"r Sheet 2 of 8 Status: YO NE? UF--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 11 BAiTT                     Equip. Class' (15) Batteries on Racks Equipment Description 11 BATTERY (& BATTERY RACK)
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?         YN NI U-] N/A-]
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZi NI- U'I N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                 YN NI- UI1 N/AZI
: 10. Based on the above seismic interaction evaluations, is equipment free        YE NI      UI-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could         Y0I NI] U[I adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lory           zZ~          #.                               Date:    /6 -/1 DileeD CherldDalle         Dilep       SARo hero~ale Z. -VJ.                                                - &#xfd;9
                                                                                              \0 -\9&#xfd;&#xfd;

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUN1  - IAIILTHHOLDI*t3 FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

M M-M      &#xfd;&#xfd;- M ,M M, ., M       - - -- MMI I I I I I I II I    0 ( iM M' M    VM r HJ:1 In +/- tz! JJ +/- tj t:= t:) b tjttt&#xfd; Sheet 1 of lo Status: YZ N[] U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No.          11 1M/XFMR                Equip. Class' (04) Transformers Equipment Description 111M Transformer Location: Bldg. TURB                 Floor El.
* Room, Area BUS 111 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one                    YO NZ of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                              YZ NEI UD N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface                              YEI ND-] UD- N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                      YEE ND UDI N/AD
: 5. Is the anchorage configuration consistent with plant documentation?                            YD-] NDl UD1 N/A0 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                              YZ NEI UD1 potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

F+/-(Ok(LE!~  +/-'If.+/-UI~               WiTHHULiJ      FEROM    PUBTLi(     Bislnes2LLUVA Sheet 2 of 10 Status: YO NE-- U[--
Seismic Walkdown Checklist (SWC)
Equipment ID No.      11 1M/XFMR               Equip. Class, (04) Transformers Equipment Description 111M Transformer Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?            YM NEI UrI N/AEl
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,       YED NEl UEI- N/AEl and masonry block walls not likely to collapse onto the equipment?
The HVAC uses threadrod and inserts on 8' to 10' spacing and looks acceptable. This is not a seismic concern.
: 9. Do attached lines have adequate flexibility to avoid damage?                    YZ NO] UE N/AEl
: 10. Based on the above seismic interaction evaluations, is equipment free           Y0 NE] UE' of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could            Y[    NEI UE]
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
There is a coil of cable that looks like it is coiled up using electricaltape. This is not a seismic issue with 11 IM XFMR. CAP 01353147 has been initiatedto evaluate this observation. In addition to the action request, WR 8384 ihas been initiatedto address this observation.
Evaluated by: Bruce M. Lory                            ~,                              Date:      10- 2 5-- 12 Dileep Cherloyalle Dileep~                        'hroal          7SxJ

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRGPRiBTAR*             iNFE)RP4AT-iGN PROPIETRY          NFO~~TON TTTII-flT  fl-   -~l  -- TfTT-     --     TT~f Sheet 1 of 5 Status: YN[N-] U0 Seismic Walkdown Checklist (SWC)
Equipment ID No. 112M/XFMR                        Equip. Class' (04)Transformers Equipment Description 112M TRANSFORMER Location: Bldg. AUX                 Floor El,              .. Room, Area  112 BUS Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchoragpe
: 1. Is the anchorage configuration verification required (i.e., is the item one   YD N[D of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              YNI NEI   U"  N/AL
: 3. Is the anchorage free of conrosion that is more than mild surface              YN ND UM N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?       Y0 ND U-      N/AD
: 5. Is the anchorage configuration consistent with plant documentation?            YO NDI UD N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required,)
: 6. Based on the above anchorage evaluations, is the anchorage free of             YZ N] U]
potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

t   +/-24LLA1 trdft1tf.'k-' +/-U'      vvN V+/-   ijjj.Z:     &#xa3;t'.JL rt:f!J+/-'.
Sheet 2 of 5 Status: Y[N NO UE]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 112M/XFMR                        Equip. Class' (04)Transformers Equipment Description 112M TRANSFORMER Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?              YO NEI U0 N/A-Some "S"hooks may be open on lighting fixtures but they are not a credible hazardto the transformer.
CAP 01352001 has been initiatedto evaluate the open "S"hooks identified during the walkdowns. In addition to writing this action request, WR 83556 has been initiated to address this observation.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NEI UEU N/AU and masonry block walls not likely to collapse onto the equipment?
Overheadcooler and supply and return lines are well supportedso there is no reasonablepotentialfor spray down or flood in the event of an earthquake.
: 9. Do attached lines have adequate flexibility to avoid damage?                      YO NEI Ur- N/AU
: 10. Based on the above seismic interaction evaluations, is equipment free             YZ NE[] U of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could               Y[j NEI UEI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by:.                                                                            Date:      /a A~S   /i A~9,( ,IK/-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE

DDDT1~T7~.DV
        .1* .LN.%,M
                  * ,LX.-L .tdI =L.C'X.LX..L
                                             'r~.T1fDrAlvrTr~LT
                                             .d. ,L*I .L"V ,LXJ."$.--r'xJL -L KJ .k*l
                                                                                      - UTTUL2.T.P.        ~TA  .. *..~..  .....      =.  .,
Sheet 1 of 4 Status: YZ NEI U[--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 117-111                                                         Equip. Class1 (21) Tanks and Heat Exchanogers Equipment Description 11 TD AFW PMP L-O CLR Location: Bldg. TURB                                   Floor El.              &#xfd;        . Room, Area I1 AFWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage I. Is the anchorage configuration verification required (i.e., is the item one                                     YZ NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                                YZ ND UD N/AD-]
There Is a u-bolt to the base plate. The base plate is anchored by four 3/8" diameterconcrete expansion anchors.
: 3. Is the anchorage free of corrosion that is more than mild surface                                                YI ND U"           N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                        YO ND UD N/AD"
: 5. Is the anchorage configuration consistent with plant documentation?                                              YN ND UD N/AD)
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
SWE's used drawing ND- 100059 for verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of                                               YZ NEI U" potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PRO*PRI TARY INFORMATIO                     -   WITHHOLD FROM FuE,,+/-C DISCLOSURE Sheet 2 of 4 Status: YZ NEI UL-Seismic Walkdown Checklist (SWC)
Equipment ID No.      W-7.111                Equip. Class, (21) Tanks and Heat Exchangaers Equipment Description f1 TD AFW PMPL-O CLR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YZ ND U[-] N/ADl
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Yo No UD1 N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              Y0 ND UD N/ADI
: 10. Based on the above seismic interaction evaluations, is equipment free     Y0 ND UD of potentially adverse seismic interaction effects?
-OtherAdverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       Y0 ND UEI adversely affect the safety functions of the equipment?
There is a powerplug cable wound around a digitaltachometer. It is deemed acceptable and not a seismic hazard.
Comments (Additional pages may be added as necessary)
Evaluated by: WlterDlordvi                                                        Date:    //-7    -   ZO/z.,
Kyle Kriesel                                                        Date:        ;Z /--4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI - WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRepRiETARY iiipeRmATieii                          PROPIETAY WITHHOLD         FROM PU~lC B19eLOSURE' INOP~~ION Sheet 1 of 4 Status: YZ N[] U7" Seismic Walkdown Checklist (SWC)
Equipment ID No. 12 QATT                          Equip. Class' (15) Batteries on Racks Equipment Description 12 BATTERY (& BATTERY RACK)
Location: Bldg. TURB               Floor El.1            ._. Room, Area 12 BATTRM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YNNE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage frec of bent, broken, missing or loose hardware?              YZ NEI UD N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface              YU NEI U" N/AM oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YZ NO UD N/AD
: 5. Is the anchorage configuration consistent with plant documentation?            YO*I ND UD- N/AD1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing NF-38221-13 was used for verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of             YS NEI UD potentially adverse seismic conditions?
'Enter the equipment class name from Appendix 13: Classes of Equipment.

Sheet 2 of 4 Status: YZ NEI U Seismic Walkdown Checklist (SWC)
Equipment ID No. 12 BATT                       Equip. Classt (15) Batteries on Rocks Equipment Description 12 BATTERY (& BATTERY RACK)
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YZ NO UE] N/A-'
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NiO UL N/AL and masonry block walls not likely to collapse onto the equipment?
The safety relatedblock walls number 5 and number 7 are acceptable.
: 9. Do attached lines have adequate flexibility to avoid damage?                YN NEI UL N/AI]
: 10. Based on the above seismic interaction evaluations, is equipment fiee        YO ND ULI of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could         YER NI] UE adversely affect the safety functions of the equipment?
There are "headbumper"foam coversiat the end of the cabinetry supports. If they were to fall off, they are nonconductive and light weight and thereforeare not a seismic concern.
Comments (Additional pages may be added as necessary)
Evaluated by: Dennis Zercher                           .       42                   Date:   /0? / -- Z.
WalterDordievic                                                                  .111& I2-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report L11 1Ikl1l      1AII'I'r nn nel         M ffMrRA       M11131 H% Mlofl       ^C11113=
Miz; 6: r-; r-,- ;, ; r r Q'.r L--,; =; =M i-. i i r. ma-i =; ==ikl&#xfd;-- =-i      i.7 =q The remaining pages are withheld from public disclosure.

T'* .r* I,,,*1..* T,-I ,,,i."
T.* m -1*T* -* T -* -i-.i-*f-* -r* 1*R -Am -3,-* *T Sheet i of 6 Status: YI[   NC] UF]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 12 BA TT CHG                                                           Equip. Class, (16) Batterv Chargers and Inverters Equipment Description 12 BATTERY CHARGER Location: Bldg. TURB                                             Floor El.                .__   Room, Area     12BATTRM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YN NO]
of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                                    Y[I NEI U-     N/AD]
: 3. Is the anchorage free of corrosion that is more than mild surface                                                     YZ NE] UEI N/A0 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NON U-                                                  N/AD1 There is one small crack on the floor, but it is not through the grout pad.
This is not a seismic concern.
: 5. Is the anchorage configuration consistent with plant documentation?                                                   YI NO] UE- N/A[D (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing NF-38221-12and AES PI-996-94-SO1 documents were used for verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of                                                    YZ N[] UE potentially adverse seismic conditions?
IRnter the equipment class name from Appendix B: Classes of Equipment,

P~fPPT7~nJ? TbT~~T~MT                WTTTTTTflTh    rm       -TT-T.T-      ----  T nrrmf Sheet 2 of 6 Status: Y[   NO UMI Seismic Walkdown Checklist (SWC)
Equipment ID No.      12 BATT CHG             Equip, Class1 (16) BatteT Chargersand Inverters Equipment Description 12 BATTERY CHARGER Interaction Effects
: 7. Are soft targets free firom impact by nearby equipment or structures?       YE NEI UE N/AE_
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YED NEI U-- N/ADl and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                YZ NDI UD N/AE-
: 10. Based on the above seismic interaction evaluations, is equipment free        Y23 NEI U" of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        Y$Z NE] UFI adversely affect the safety functions of the equipment?
The SWEs opened both doors on 12 BATT CHG. There were no issues identified.
Comments (Additional pages may be added as necessary)
Evaluated by:                                                                     Evlae y.Date: /k /24-       /I,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SU1N1S1 - WITHHO-13l FROM PB II   IC DISC ORU

         -  PROPRI.T.ARY !NR..              .T.ON          WIT-H11OLD FROM PUDLIC Dise3est3RE Sheet 1 of 3 Status: YE NF- U-Seismic Walkdown Checklist (SWC)
Equipment ID No.          122M/XFMR                Equip. Classi (04)Transformers Equipment Description 122M TRANSFORMER Location: Bldg. AUX                  Floor El.
* Room, Area 122 BUS Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YN NEI UD- N/A[1
: 3. Is the anchorage free of corrosion that is more than mild surface           YN NEI UD- N/ADl oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YM NEI UF- N/AD The SWEs noted the presence of shrinkagecracks in the concrete, but they are not a seismic concern.
: 5. Is the anchorage configuration consistent with plant documentation?         YDI NDI UF- N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of          YN NEI U-1 potentially adverse seismic conditions?
1 Enter the equipment class name from Appendix B: Classes of Equipment.

    -   PPOrRT1TTAT2Y        TNPOTMATTC)N            WIThhOLD+/-1G3 FoRG         *J .- eOI PUBL"C
                                                                           .             IE3     --UI I -- \"M Sheet 2 of 3 Status: YZ NEI UE--
Seismic Walkdown Checklist (SWC)
Equipment ID No.        122M/XFMR              Equip. ClassI (04)Transformers Equipment Description 122M TRANSFORMER Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?         YN Nil UI- N/A[D
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[I ND ULI N/AL]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                 YO NDl UD- N/AD
: 10. Based on the above seismic interaction evaluations, is equipment free          YN NEI UD of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could           Y0 NDI UD-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lory                                                           Date:    /Q ,/-7_
Dennis Zercho.r                         ---
De~nnis Zercher....

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Fziell    i., -.- LIMa -wM,V.,      OEM U,MIn The remaining pages are withheld from public disclosure.

DP(:P   T4;PTz.TY       13f11T'l                  t1TTT*T Sheet 1 of 7 Status: Y0 Nn U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 125MR                             Equip. Class' (20) Instrumentationand Control Panelsand Cabinets Equipment Description 125 MiscellaneousRelay Rack Location: Bldg. TURB                Floor El.
* Room, Area ROD DRIVE Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   Y[I NZ of the 50% of SWEL items requiring such verification)?
Anchored by four 5/8" concrete expansion anchors,one in each corner.
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YE NO UI- N/AEl
: 3. Is the anchorage free of corrosion that is more than mild surface             YEI   NEI  U-1 N/AEU oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YE NEI     U-1 N/Ar1
: 5. Is the anchorage configuration consistent with plant documentation?            YCI- NEI UO- N/AN (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YZ NEI UF-potentially adverse seismic conditions?
IEnter the equipment class name from  Appendix B: Classes of Equipment.

PROPRI]2TAIZY INFORMATION                   wiT-iiOLD3     FRO~m PbmfiC BIEOOLOSURH Sheet 2 of 7 Status: YZ] NF- U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No.       125MR                  Equip. Class' (20) Instrumentationand Control Panelsand Cabinets Equipment Description 125 MiscellaneousRelay Rack Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YN NEI U-- N/AU The light fixture "S"hooks are closed. No seismic concerns identified.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NDI UD-N/AL and masonry block walls not likely to collapse onto the equipment?
Overheadair handling unit is supported by three rod hangers. One rod hanger is a cross member and is not positively secured to airhandler casing.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
: 9. Do attached lines have adequate flexibility to avoid damage?               YN ND- UD- N/AD Masonry block wall number 36 is safety related,so it is seismically acceptable.
: 10. Based on the above seismic interaction evaluations, is equipment free      YE NE UD-of potentially adverse seismic interaction effects?
Cabinet was inspectedinternally and no loose or missing component mounting hardwareor structuralfasteners were identified.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YO NDI UD adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)

     *-PROPRIETARY IPGORMATI-N               WIT.... O..LD, FRM PLBLIC         ISCLOSUIG    E Sheet 3 of 7 Status: YO Nn! U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 125MR                  Equip. Class' (20)Instrumentationand Control Panelsand Cabinets Equipment Description 125 Miscellaneous Relay Rack Evaluated by:                                                              Date:     /o    -

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSUJRE The remaining pages are withheld from public disclosure.

Sheet i of 8 Status: YZ NEI UL-]
Seismic Walkdown Checklist (SWC)
Equipment ID No.         135-101                  Equip. Class' (21) Tanks and Heat Exchangers Equipment Description 12 CLG WTR PMPDSL JCKT CLG HX Location: Bldg. SSCN                Floor El.
* Room, Area 12 DD CLWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YO NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YO NEI UD- N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface             YZ N-- UD-N/AD1 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YZI   NEI UD1 N/AD-
: 5. Is the anchorage configuration consistent with plant documentation?           YZ NEI U[       N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
The SQUG SEWS was used to verify the anchorage.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YO NEIUE potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

       '1=*
          .l,* l* .l..* .l,* ,,* T'71tl"l"pt.l,* .* T ,=p"K
                                                          ",F T'71f'* .I,.*.Tt lf =AI,.1FI
                                                                                    =* f'* "IK'T   rrtrmtTTTf.r = flflflIR flrTflT T Cl mr  r, CIT Cnrrrfl Sheet 2 of 8 Status: YZ ND-- U-Seismic Walkdown Checklist (SWC)
Equipment ID No. 135-101                                                                     Equip. Class' (21) Tanks and Heat Exchangers Equipment Description 12 CLG WTR PMP DSL JCKT CLG HX Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                           YN NEI Ur' N/AL!
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,                                                      YE NEI Urn N/AEl and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                                   YCK NI Urn N/AE1
: 10. Based on the above seismic interaction evaluations, is equipment free                                                          YN NEI Urn of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                                                           YM NEIl Ur adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lorv                                                                                                           Date:      t2-       -  *--
Dilpion rho~rlnnallp_                                                 A                    X               Date:       O-        .  !-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WITHHOL-lD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

WITTHHOLDT    FROM     PUBLC     DIGCL39GrUr Sheet i of 6 Status: YZ N[l U7 Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-042                          Equip. Class' (05) HorizontalPumps Equipment Description 12 CHG Pump Location: Bldg. AUX                 Floor El.              . Room, Area   12 CHRG PMP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YGI No of the 50% of SWEL items requiring such verification)?
The anchorageis composed of eight 1 1/8" cast in place anchors.
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             Y0 NO UO N/AO
: 3. Is the anchorage free of corrosion that is more than mild surface             YZ NO UO N/AEl oxidation?
The anchorageis clean and coated,
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     Y[l N[O UOF1 N/A[]
There are cracks in the floor but they do not cross through anchors.
: 5. Is the anchorage configuration consistent with plant documentation?           Y[   NEI U-1 N/AF' (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing NF-38308-01 and SQUG SEWs were used for anchorage verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of             YO NEI UO potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

       ,--  - T-- T,3".
                      --- .7 ,/ , F.,**,,
                                          --        itA
                                                     -  . -. - .. t *-
T Sheet 2 of 6 Status: YER NO UL-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-042                                            Equip. Class' (05) Horizontal Pumps Equipment Description 12 CHG Pump Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                             YO N[] Ut] N/At]
There are open 'S' hooks on lighting fixtures but they are not deemed a crediblehazardto the chargingpumps.
CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been identifiedduring these walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ N'] Ut N/At]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                    YO NEI Ut] N/A[]
: 10. Based on the above seismic interaction evaluations, is equipment free                           YM ND UE of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                             YZ NEI Ut]
adversely affect the safety functions of the equipment?
ContaminatedRadiation sign stanchions can not overturn due to bottom mass. As a recommendation,they should be positively secured to skid.
Comments (Additional pages may be added as necessary)
_______________________________________________I_________________________,_______
Evaluated by: WalterDiordievic               ......                         btiIY~KI *ll, iI            Date:               2""
Kyle Kries/e                       t'                            'A                Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS-  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETARY TNFl*'rDTOTr'                        T,1Tr'F1rTEhOD  FROM, P-UT'rICt   TDISCL*t 'FR-Sheet 1 of 9 Status: YIM ND-] UL-Seismic Walkdown Checklist (SWC)
Equipment ID No.         145-071                  Equip. Class' (05) HorizontalPumps Equipment Description 11 SI PMP Location: Bldg. AUX                 Floor El.
* Room, Area 11112 S1 PUMP Manufacturer, Model, Etc. (optional but recommended)                Binqham Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one      YE NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                YO NEI UD- N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface                YZ ND1 U-- N/AD1 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?         YO NDI UD-] N/AD
: 5. Is the anchorage configuration consistent with plant documentation?              YEI ND UD N/AD3 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
SWEs referenceddrawing XH- 1-633 for anchorage verification. This drawingshowed ten 1" anchors. The anchorage was verified.
: 6. Based on the above anchorage evaluations, is the anchorage free of               YN NEIUE potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY 1             .FRT-I-    N      WIT..O.D FROM PU..I. .             ISGCLOFSU..*-
Sheet 2 of 9 Status: YOI    NEI UL--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-071                      Equip. Class' (05) HorizontalPumps Equipment Description 11 SI PMP Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YO N[: U-1 N/A[]
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI ULI N/AO and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?               YO NI] UO N/AL]
: 10. Based on the above seismic interaction evaluations, is equipment free      Y     NE-I U-]
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NI] UL]
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
There is a temporary power supply cable to the radiationsign, but there is no seismic concern.
Evaluated by: Dileep Cherlopalle     C-.A\.)k\eec-r                               Date:      LO - t 12-Pnr~      I  n LI LU.,U L-UIyJ       4--&#xfd;A.-                rJ

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS'I WITHHLD FROM PUBLIC DISCLOSUrE The remaining pages are withheld from public disclosure.

           'I-*'r) t'-* T'I 'I-* T 'I-;*o-rl "J* 1-) v T *"T
* t-* 'I-) '*.R -l*.i'rJ T ('* *T    T.T&#xfd;MTTTTt-%T TN &#xfd;&#xfd;  f'\%Jr r)T&#xfd;T -rf&#xfd;  T&#xfd;&#xfd;Ot"T Sheet 1 of 9 Status: YE N[-- U--
Seismic Walkdown Checklist (SWC)
Equipment ID No.                           145-122                                          Equip. Class, (05) HorizontalPumps Equipment Description 12 CC PMP Location: Bldg. AUX                                         Floor El.                        &#xfd;        Room, Area      12/22 CC PUMP Manufacturer, Model, Etc. (optional but recommended)                                                       EM Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                                             YE    NE U[-1 N/A--
: 3. Is the anchorage free of corrosion that is more than mild surface                                                             YN NF UD-- N/A[--
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                     YE N-- U-- N/A-1
: 5. Is the anchorage configuration consistent with plant documentation?                                                           YZ NEI UD- N/AD-(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Referenced drawing XH- 105-5 for anchorage verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of                                                            YZ NF UE1 potentially adverse seismic conditions?
1 Enter the equipment class name from Appendix B: Classes of Equipment.

PRRPRET-AR                      ~~''U Ul
                                         !NL2DITIQ           W~lITHHOLD      tFRGU V UBLI    P IRCI UUR G
Sheet 2 of 9 Status: Y[O NR- U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-122                               Equip. Class' (05) HorizontalPumps Equipment Description 12 CC PMP Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YZ NEI UE- N/AU
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NEI UI- N/A]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                 YZ Nil UI- N/AU
: 10. Based on the above seismic interaction evaluations, is equipment free          Y     NE-I UU of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could           Y[D NEI U-I adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Foreign material(black insulation 1"x 2" x 8') found behind the 12 CC pump at column base 1-CCH-375 (supportnumber). CAP 1352321 issued to address FME problems.
PlInhint'-ri     6  6 MIM       fh&#xfd;'I   --- I/-    C.V e"&#xfd; I                              Date:       k c - \9 - \2-Lj I~ L-i tl~fJJI                     P10"  Z='= -' r-~oat.
Bruce M. Lory                Bruce M.Lorv                                         Jo 10 ~/TfZ
                                                                                                        - /IT-/ 7-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WITHHOLD FROM.. PU*BLIC DISCLOSUIRE The remaining pages are withheld from public disclosure.

            .,i,-.A..i..
PROPRIETARY                    "N*-                   WITHHLB    *. e.m PUBLIe       I3E-Le. sURE Sheet I of 4 Status: YN1 NEI UL Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-201                             Equip. Class' (05) Horizontal Pumps Equipment Description 11 TD AFW PMP Location: Bldg. TURB                  Floor El. &#xfd;             _ Room, Area 11 AFWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL, The space below each of the following questions may be used to record the results of judgments and findings, Additional space is provided at the end of this checklist for documenting other comments, Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one      YO NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                YN NO' U"      N/AD'
: 3. Is the anchorage free of corrosion that is more than mild surface                YZ NEI U"      N/AI' oxidation?
The anchorageis clean and coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?         YO NI    U-] N/AD]
: 5. Is the anchorage configuration consistent with plant documentation?               YZ NEI UE- N/AI-(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
The SWE's referenceddrawing NF-38221-9 for anchorage verification..
: 6. Based on the above anchorage evaluations, is the anchorage free of                YO NEI U["
potentially adverse seismic conditions?
IEnter the equipment    class name from Appendix B: Classes of Equipment.

PROPRIETARY&#xfd; INFEOPJ~TIGN                         WIThhOLDE3    FRO)M PUBLIC( DISGCLOSURE Sheet 2 of 4 Status: YN N7- U7-Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-201                        Equip, Class, (05) HorizontalPumps Equipment Description 11 TO AFW PMP Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YM NEI Ur" N/AEl The light fixtures have closed "S"hooks.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[9 N-] UEI N/AC3 and masonry block walls not likely to collapse onto the equipment?
There are no masonry walls. The overhead cable tray and conduits are well supported.
: 9. Do attached lines have adequate flexibility to avoid damage?               YZ NO UrI N/AIl There is a light fixture in contact with the incoming conduit, but this is not a seismic issue.
: 10. Based on the above seismic interaction evaluations, is equipment free      YM NI U-]
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        YZ! NI] UFI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordievic                       1Q'9                         Date:   I    5      -
K&le K6esel                                                         Date:   A V

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI -WITHHOLD FROM PUBIRIC DISCLOSURE The remaining pages are withheld from public disclosure.

FmTTTFUB131-Br WT-111T eE3E)"1"H',rr              ehT Sheet 1 of 5 Status: Y[   ND- UI-Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-392                           Equip. Class' (06) Vertical Pumps Equipment Description 12 DD CLG WTR PMP Location: Bldg. SSCN                 Floor El.
* Room, Area 12 DD CLWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YN ND of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YN NEI    UE- N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface             YZ NEI U-- N/AD oxidation?
SWEs noted that water was on all of the bolts and the base plate.
Water source was not evident. There was slight bolt corrosionnoted but was deemed acceptable.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YN NEI UF- N/AD1
: 5. Is the anchorage configuration consistent with plant documentation?          YN NEI UI- N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Anchorage verification was performed using the SQUG SEWs.
Anchorage consists of twelve 3/4" diameter "castin place"bolts.
: 6. Based on the above anchorage evaluations, is the anchorage free of           YN NO U-potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

SPR-PRI'ETARY                    r-ri-rRmATi.-WI-T-1-rT'r            P  ,ROM 2 TI-.-r*,
                                                                                 -rIC               R-E Sheet 2 of 5 Status: YN Nr-        Ur-Seismic Walkdown Checklist (SWC)
Equipment ID No. 145-392                      Equip. Class' (06) Vertical Pumps Equipment Description 12 DD CLG WTR PMP Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YZ NE] Ur- N/AO
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,    YIE NEI UI N/AZ and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                 YN NEI Ur' N/AZ
: 10. Based on the above seismic interaction evaluations, is equipment free        Y0 NO Ur of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could         Y[9 NE      UM-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce Lory                                                            Date:     16_-.21-_1Z Dileep Cherlopalle     c v      ,  p     ,,-,                         Date:     10 - r25-1 Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI - WAITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPR'i*:IETARY       1N+/-    R4A-1N't 2''''.f          WI
                                                            ,      H EE   I tttim LJ etdtI-n;:.i   Iti+/-tj.UtJUi-id   idti Sheet 1 of 8 Status: YZ NF] ULI Seismic Walkdown Checklist (SWC)
Equipment ID No.         158-011                   Equip. Class1 (00) Other Equipment Description 11 CLG WTR STRNR Location: Bldg. SSCN                 Floor El.     &#xfd;             Room, Area SOUTH Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one           YO Nl of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                     YM NEI UD1 N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface                     YO NDI UD- N/ADl oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?             YM NDI UD- N/AD
: 5. Is the anchorage configuration consistent with plant documentation?                   YN ND:] UD N/AD1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
SQUG SEWs were used for anchorage verification. The anchorage consists of four 7/8" diameter "castin place"bolts.
: 6. Based on the above anchorage evaluations, is the anchorage free of                    YE] NFD U-1 potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY INFORCelT ION                    WITIHGOLD FROM PUELIC           DIGGCLOSURE Sheet 2 of 8 Status: YZ NEil UI-Seismic Walkdown Checklist (SWC)
Equipment ID No. 158-011                        Equip. Class, (00) Other Equipment Description 11 CLG WTR STRNR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YI    NE UE- N/AZ
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI U-- N/AZ and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YZ NO U-        N/AZ
: 10. Based on the above seismic interaction evaluations, is equipment free     YI    NEI ur-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      YE NEI UE adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
A conduit clamp was found loose with its nut missing. The nut was found underneath the conduit clamp on the floor. The solenoid valve nearby and the adjacent conduitclamp on the other side is tight. Therefore, the SWEs judged the loose conduit clamp as not an adverse seismic condition.
Evaluated by: Bruce Lorv        2 Date:    /O-Z22     /-
Dileep Cheropalle             7                                             10 - 2&#xfd;3 -
e.
c-n-r.&#xfd;-o.-e~.
i0 rI2-9                        -

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SU.NSI -WITHHOLD FROM PUBLIC DISCLOSURE

            +&#xfd; 44 " 4&#xfd; 44 -A-4:4 4-- AA44 -Y- -6 44 4&#xfd; W " W " 4- W44 -   44 -6 4-4444644- 44 4&#xfd;44 6JP4 -W-644A 4 6&#xfd; 44 4. &#xfd;A "4-A-J &#xfd;mJ,444 41.
Sheet 1 of 7 Status: Y-- NO UD-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 174-031                                              Equip. Class' (I0) Air Handlers Equipment Description 15 SWGR RM UNIT CLR Location: Bldg. TURB                              Floor EI.            . ___Room, Area BUS 15 SWG Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one                                   YIJ NDI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                              YO NDI UD' N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface                                              YO NDI UD N/AD[
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                      YZ NDI UDI N/AD
: 5. Is the anchorage configuration consistent with plant documentation?                                            YM ND- UD1 N/A--
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
The SWEs checked and confirmed that the cooler is connected to the structuralsteel via four 1/2" diameter threadedrods as per drawing NF-121067. The SWEs cannotsee the ceiling anchorage.
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?
'Enter the equipment class name from Appendix B: Classes of Equipment.

T PT&#xfd;J21--TIT-M   P"I   TTT&#xfd;^P"PT           Tl  WTT TTT~T^T                         Tr'rTn.rrf PlfM~~l.C Sheet 2 of 7 Status: YEl- N[ U[I]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 174-031                        Equip. Class1 (10) Air Handlers Equipment Description 15 SWGR RM UNIT CLR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?         Y0 NO UW N/AZl
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,    YN NEI ULI N/AZ' and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                 YE NEI UW N/AZ The drain line was noted to have limited flexibility because it runs from the drip pan and straight into the safety relatedblock wall number 26.
The S WEs judge this to be acceptablebased on the structuralframing that holds the cooler in the air.
: 10. Based on the above seismic interaction evaluations, is equipment free        YEI NZ UZ of potentially adverse seismic interaction effects?
The insulation for the 15 SWGR RM unit cooler return line is touching an adjacent4" diameter conduit. This location is between the unit cooler and the wall.
Site engineeringhas reviewed this observationand concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could         Y[i NEI UWJ adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle      4C-X. 1k k4',R-PJ5,                 .0--        -
Date:       I1     &\0--
Bruce M. Lorv          z?~~ ;'r.                                      Date:      1e6 - "2>.-.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report S1UNlSI - IA-lTHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRGPR!FsT-AR31          !NFGRP4AT-1GN              PROrTITT'RY    TNFOR TTOTTWITHHOLDT PUBLIC  TI"rT DIGGCLOSURE Sheet 1 of 8 Status: YN NIZ U[]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 174-162                           Equip. Class' (10) Air Handlers Equipment Description TRN A EVENT MON RM WEST UNIT CLR Location: Bldg. TURB                Floor EI.         .. Room, Area TRN A EVENT MON Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of'judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchora2e
: 1. Is the anchorage configuration verification required (i.e., is the item one      YF1 NED of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                YN NEI UE] N/AL]
Rods are slightly bent due to contact with conduit above. This is not a structuralsupport issue.
: 3. Is the anchorage free of corrosion that is more than mild surface                Y0 NEI UoI N/AEI oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?         Y0 NiO Ur] N/A--
: 5. Is the anchorage configuration consistent with plant documentation?               YE] NEI UE] N/AN (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                YZ NEI ur potentially adverse seismic conditions?
Entex the equipment class name from Appendix B: Classes of Equipment.

T.?T*TTTT*T i~~u~uiLFGRMATIG  +/-IT:Tuur'Luuiur                           e1-hUL)tfor'VELI       ULPU Sheet 2 of 8 Status: YV Nn-- U-Seismic Walkdown Checklist (SWC)
Equipment ID No. 174-162                         Equip. Class' (10) Air Handlers Equipment Description TRN A EVENT MON RM WEST UNIT CLR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?             YN NEI UEV N/AE The lateral frame provides lateralstiffness so little displacement ensues.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NEI UE N/AE and masonry block walls not likely to collapse onto the equipment?
Check if block wall north of H6 column (behind cooler)is seismically designed (no label). Later discussion with plant engineering confirms that the block wall is seismic Category I designed, so comment is resolved and no seismic concern exists.
: 9. Do attached lines have adequate flexibility to avoid damage?                     YIO ND UE] N/AE Supply and return lines span approximately 10' vertically. There is no seismic concern.
: 10. Based on the above seismic interaction evaluations, is equipment free            YZ NEI UE1 of potentially adverse seismic interaction effects?
A lighting fixture will collide with the drip pan or lateralframe but it is not a seismic hazard to the cooler.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could              YN NEI UE-adversely affect the safety functions of the equipment?
The drip pan hardwareis all in place.
Comments (Additional pages may be added as necessary)
Evaluated by: Walter DiordQevic                                                          Date:      (o   ttb      L Bruce M. Lon, 4d1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOS'RE The remaining pages are withheld from public disclosure.

Sheet 1 of 7 Status: Y] NE-]    UL--
Seismic Walkdown Checklist (SWC)
Equipment ID No.          1ASG1                    Equip. Class' (20) Instrumentation and Control Panels and Cabinets Equipment Description Safeguard Relay Rack 1ASG 1 Location: Bldg. AUX                  Floor EI. &#xfd;              Room, Area RELAY Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one    YEI NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YZ NDI UD N/AD1
: 3. Is the anchorage free of corrosion that is more than mild surface              YO NDI UD1 N/AD-oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?       YED NDI U-] N/AD1
: 5. Is the anchorage configuration consistent with plant documentation?           YDl NDI U-- N/A[9 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of             YZ NEI UD-potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

       .PRWI'KIRIETAP-4        iINP1'U1"L"iION         1ITIUIGJm   FERGM PUBLL+/-U    E)!GLULGUR Sheet 2 of 7 Status: YZ Nn U[-
Seismic Walkdown Checklist (SWC)
Equipment ID No. 1ASGI                        Equip. Class' (20) Instrumentationand Control Panelsand Cabinets Equipment Description Safeguard Relay Rack 1ASG 1 Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YO NErI Ur      N/AL]
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI Url N/AL and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YO NEI U-       N/AL
: 10. Based on the above seismic interaction evaluations, is equipment free     YZ NEI ur!
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      YO NEI UiE adversely affect the safety functions of the equipment?
The cabinet internalcomponents were inspectedfor any loose or missing mounting hardware,and neither condition was found. A spare, unused terminalblock was noted to be missing one terminal screw (not mounting screw)..
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lory                                                       Date:    / 0 - /
Dileen CherlonRhalle.~- \                                                \O~ \'~..DA Difeen Cherlonalle

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!I WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PRGPRIET-ARY            !NFGR&#xfd;&#xfd;T-IGN               O TR P .TIHHOL TW     FROWJ  PUD.LIC. DISCO*...          JURE Sheet 1 of 5
                                                                                             *tatus: Y23 N-' U[--
Seismic Walkdown Checklist (SWC)
Equipment ID No.         1LT-762                  Equip. Class' (1g) Instruments on Racks Equipment Description 12 RX VSL HEAD FULL RNG TRN B DIP XMTR Location: Bldg. AUX                Floor El.               .. Room, Area EAST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YO N[D of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YZ NE U"        N/AO
: 3. Is the anchorage free of corrosion that is more than mild surface             YZ NEI UE] N/AO oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YIZ NEI UO N/An
: 5. Is the anchorage configuration consistent with plant documentation?            YE NEI UE- N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of             YO NEI UE1 potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETIARY INFORMATION                       WITH119LB      FRGM     PUBE31G Sheet 2 of 5 Status: YE] N[] U[-]
Seismic Walkdown Checklist (SWC)
Equipment ID No.      1LT-762                 Equip. Class1 (18) Instruments on Racks Equipment Description 12 RX VSL HEAD FULL RNG TRN B DIP XMTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YE NO- UO] N/AD
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,  YO NE] UO N/AE-and masonry block walls not likely to collapse onto the equipment?
The "S"hooks for the lighting fixtures are closed. They are not a seismic concern.
: 9. Do attached lines have adequate flexibility to avoid damage?                YI   NO] U[- N/A]
: 10. Based on the above seismic interaction evaluations, is equipment free       YN NEI Ul' of potentially adverse seismic interaction effects?
One of the washers used for mounting is rusty, but this is not a seismic concern.
Other Adverse Conditions 11, Have you looked for and found no other seismic conditions that could        Y[j NO] U!]
adversely affect the safety functions of the equipment?
Nothing anomalous was observed.
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordie vic                                                  Date:         / 0    2-  L"f Dennis ZArcher

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report IAII'LIL~f I I* r7is'k  A Ii    1  1I' rl   *'li'G    i i bUI~~
L-I b
I *IL--I fflJL           rdu.J   ruoLI'.. hpialJw     UF The remaining pages are withheld from public disclosure.

PRepRiE!FARY             iiFaP,+4AT-iei            PRORITAR WIT-1hOLDE IPOP~TONP-ROM PUB1LIC DIGGCLOCURE Sheet i of 2 Status: YN NO7 U-IJ Seismic Walkdown Checklist (SWC)
Equipment ID No. 1LT-763                          Equip. Class- (18) Instruments on Racks Equipment Description 12 RX L            HEAD DYNAMIC RNG TRN B DIPXMTR Location: Bldg, AUX                 Floor El.
* Room, Area EAST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL, The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YD NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              YZ NO UE] NAD
: 3. Is the anchorage free of corrosion that is more than mild surface              YZ N['] U[    N/AE oxidation?
They are coated. There is no seismic concern.
: 4. Isthe anchorage free of visible cracks in the concrete near the anchors?       YO NEI UE] N/A-l There are shrinkage cracks, but not through the anchors.It is not a seismic concern.
: 5. Is the anchorage configuration consistent with plant documentation?            YE NE UE N/AE (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the aboveanchorage evaluations, is the anchorage free of             YO NEI UE-potentially adverse seismic conditions?
i I Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY             ,NFOR*,R,?.4T   ,.,i    WIT,-IIILe3B          F,,.       e' DSCLOSURE Sheet 2 of 2 Status: YN ND U--
Seismic Waikdown Checklist (SWC)
Equipment ID No. ILT-763                        Equip. Class' (18) Instruments on Racks Equipment Description 12 RX VSL HEAD DYNAMIC RNG TRN B DIP XMTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?         YE NI] UE N/A[]
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UE] N/AL]
and masonry block walls not likely to collapse onto the equipment?
The lighting fixture "S"hooks are closed and are not a seismic concern.
: 9. Do attached lines have adequate flexibility to avoid damage?                 YV NEI U[I- N/AE]
: 10. Based on the above seismic interaction evaluations, is equipment free        YNI NEI    U of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could         YZ NIl Ur-adversely affect the safety functions of the equipment?
Nothing anomalous was found.
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordievic                                /!!Y                 Date:        (       -   '
Donnh iq Zrchqr K

        . PROPRIET-ARY           TNPFRi*TIO9N             -WTm14eL.      ROM PBB..IC       ISCL...UR.
Sheet 1 of 5 Status: YZ NEI] U[]
Seismic Walkdown Checklist (SWC)
Equipment ID No.          1LT-920                  Equip. Class1 (18) Instruments on Racks Equipment Description 11 RWST LVL XMTR Location: Bldg. AUX                  Floor El.                Room, Area 11/12 SI PumP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YEI NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YZ NEI U[] N/AL-
: 3. Is the anchorage free of corrosion that is more than mild surface             YO NEI U[L N/AL]
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YO NEI Ur- N/A-]
: 5. Is the anchorage configuration consistent with plant documentation?           Yxm NEI UE] N/AO (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YEDNEI UEn potentially adverse seismic conditions?
1 Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY          INFORmkTTiON            WITHHOLD       FROM PuBLIe        ...... s...
Sheet 2 of 5 Status: Y[J NEI       UIZ Seismic Walkdown Checklist (SWC)
Equipment ID No. lLT-920                       Equip. Class' (18) Instruments on Racks Equipment Description 11 RWSTLVL XMTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YN NEI Ur- N/AFI
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI U[I N/AI[]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                YI     NEI UE' N/AI"I The flex conduit loop and tubing have an adequate number of bends for flexibility.
: 10. Based on the above seismic interaction evaluations, is equipment free       YZ NEI UE of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        YN NI] UI-adversely affect the safety functions of the equipment?
The SWE's noted some verticalgrating that was used for access at one time. The level transmitteris in the zone of influence, but the grating is seismically anchored and is therefore acceptable.
Comments (Additional pages may be added as necessary)
There is a light fixture directly above the transmitter. The SWEs cannot confirm whether the "S" hooks are closed. Confirmation would requirethe use of a tall ladderor scaffolding. It is acceptable as it is.
Evaluated by: Dileep Cherlopalle                                                   Date:     \o - 2..62,- k_
p Bruce M. Loni                    I*-- 1&#xfd;lr                         Date:     /Z --2Y-. 2/

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PRePRIETARY            INFORMATION                        I-hI.
                                                                     ..    .'B/I1f3e1E P RIEA..IL.L.L.wiT PROm     PbLI Sheet 1 Of 7 Status: YZ NI- Ui-Seismic Walkdown Checklist (SWC)
Equipment ID No. 1LT-921                          Equip. Class' (18) Instruments on Racks Equipment Description 11 RWST LVL XMTR Location: Bldg. AUX                 Floor El.                   oom, Area   11/12 SI PUMPS Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one     YN NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?               YZ N[: U'- N/AD1
: 3. Is the anchorage free of corrosion that is more than mild surface               YZ NEI UD- N/AD]
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?       Y0 N[-] UD- N/AD
: 5. Is the anchorage configuration consistent with plant documentation?             YMJ NEI U-- N/AD-(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
SQUG SEWs were referenced for anchorage verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of              YZ NEI UEJ potentially adverse seismic conditions?
1 Enter the equipment class name from Appendix B: Classes of Equipment.

PR9PRIBEFAR3Lz       !NFGRMAEP!eN           OwITOIIIILD     ROem PUDLIC DTisCLOSURE Sheet 2 of 7 Status: Y[Z N[-] U[-I Seismic Walkdown Checklist (SWC)
Equipment ID No. 1LT-921                 Equip. Class' (18) Instruments on Racks Equipment Description 11 RWSTLVL XMTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YO NE] ULI N/AEl
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NI] ULI N/AL]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YED NI] UE] N/AEl
: 10. Based on the above seismic interaction evaluations, is equipment free     YN NE] UDI of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      Y[D NE] U"]
adversely affect the safety functions of the equipment?
Comments .(Additional pages may be added as necessary)
Evaluated by: Bruce Lorv                                                         Date:   /4c>-   I ?-"/'L Dileep Cheropalle      C--V-               -*4EP-eQAx                        \\o-k,~-
0 - Vb - VI-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNRSI -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

0NO 0," ttPtft'+/-' +/- "N  -  V1+/- T t ft t " f-j &#xfd; t            tj +/- tj t= t:jb  tjttz Sheet i of 6 Status: Y] N-] Ut]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 1NR3                                 Equip. Classi (20) Instrumentation and Control Panels and Cabinets Equipment Description NIS RACK III (BLU) INR3 Location: Bldg. AUX                   Floor El.                 Room, Area CNTRL RM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one       YI- NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                 YE NEI[UL N/ADE
: 3. Is the anchorage free of corrosion that is more than mild surface                 YO NEI U[I N/AD1 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?         YO NEI UED N/AD
: 5. Is the anchorage configuration consistent with plant documentation?               YE- NO UD1 N/AE (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                YM NEI UD potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes  of Equipment.

I PROPRIET-ARY !NFGRAT-IGN                     W+/-Tihftj:btj  Vftt&#xfd;m  rtjj=jTC Sheet 2 of 6 Status: Y[    NEI- Ul-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 1NR3                           Equip. Class' (20) Instrumentation and Control Panels and Cabinets Equipment Description NIS RACK Ill (BLU) INR3 Interaction Effects
: 7. Are soft targets firee firom impact by nearby equipment or structures?     YED NEI U'3 N/AZ
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI UO N/AZI and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                YO NO UE- N/AZ-
: 10. Based on the above seismic interaction evaluations, is equipment free       YO NO UES of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        YO NOI Ur-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lorv             =
Date:    //-0     -[2-L/
Dileen Cherlonalle             t~     P-j

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUMBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRQPRTRT-A-R:V          TNT2QRA4-A-TTQN         -  P.PITR-r rrWITHHOLD3B FROM P"UBL3I*    DISCLO        TTSURE Sheet I of 4 Status: YN NF U]
Seismic Walkdown Checklist (SWC)
Equipment ID No.        IPT-469                  Equip, Class, (18) Instruments on Racks Equipment Description 11 STM GEN LOOPA (CHNNL /- WHI) PXMTR Location: Bldg. AUX                 Floor El. &#xfd;           _ Room, Area SOUTH EAST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorane
: 1. Is the anchorage configuration verification required (ie., is the item one    YN NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YZ NEI ULJ N/AEl It is mounted on a panel with four 1/4" diameterconcrete expansion anchors.
: 3. Is the anchorage free of corrosion that is more than mild surface             Yi   NEI U0 N/AO oxidation?
The anchorageis clean and coated.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YO NEI UQ- N/AI-
: 5. Is the anchorage configuration consistent with plant documentation?            YS NEI UE- N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing 92L370-2 was used for anchorage verification. It does not specify an anchorsize. 1/4" anchorsare typical detail for single Instrument mounting.
: 6. Based on the above anchorage evaluations, is the anchorage free of             YO NEI UCl potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

      &#xa3;UV1-~II~T~K~         ii'    UVJ"L".1iUi'~       LItiHULL)      it~UI"i LULL+/-U     U+/-UULUUUKL Sheet 2 of 4 Status: YZ NEI U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 1PT-469                       Equip. Class' (18) Instruments on Racks Equipment Description          ,STM GEN LOOP A CHNNL I-WHI PXMTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YO NE UF' N/AU
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,   YN NEI UO N/AQ and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                Y2 NEI U-1 N/AU
: 10. Based on the above seismic interaction evaluations, is equipment free      YO NO UO of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        YZ NO UFJ adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Wally Diordiovic                                                     Date:           ;(   /2J Date:        ,t)-5-11.2.
              &19aKriegel           Zx       .*  -              .at..

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

H-PRIETARY RiFeRMAT-f 8N                                          FROM RR A ITWITHHOLD "     PUBIC-G DITC13GI**'E Sheet I of 4 Status: YN NEI U[-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 1PT-479                          Equip. Class, (18) Instruments on Racks Equipment Description 12 STM GEN LOOP B (CHNNL IV-YEL) P XMTR Location: Bldg. AUX                 Floor El.             . Room, Area NORTH EAST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  Y0 NO of the 50% of SWEL items requiring such verification)?
It Is anchoredby four 1/4" diameterconcrete expansion anchors.
Pressuretransmitteris mounted on a steel panel.
2, Is the anchorage free of bent, broken, missing or loose hardware?            YZ NO UC- N/AEl
: 3. Is the anchorage free of corrosion that is more than mild surface             Yt   N-I UCI N/A-]
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YC   NEI UC- N/AC-
: 5. Is the anchorage configuration consistent with plant documentation?           YZ NEI U-     N/AE-(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Drawing 92L 370-3 was used for anchorageverification. Anchor size is not specified on drawing, but 1/4' anchors are typical detail for single instrument mounting.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YN ND U'-
potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

     .PRO.PRIET-ARY ETN....            iTie..       WITHHOL         FROM PUBLIC DISCLOSURE Sheet 2 of 4 Status: YZ NEO Uni Seismic Wtlkdown Checklist (SWC)
Equipment ID No. 1PT-479                      Equip. Class' (18) Instruments on Racks Equipment Description 12 STM GEN LOOP B (CHNNL tV-YELO P XMTR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YM NO UO N/AO The "S"hooks on light fixtures are closed, so there is no seismic concern.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YI     NO UO N/AO and masonry block walls not likely to collapse onto the equipment?
A#l welded steel piping Is above with seismic restraints. There is not an Issue,
: 9. Do attached lines have adequate flexibility to avoid damage?               YN NO U[       N/AO
: 10. Based on the above seismic interaction evaluations, is equipment free      YN NO UO of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        Y0I NO UO adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
_/
Evaluated by: Wa/i Dbrdye                                                          Date: Dat:
J   t - "7 )--,,,e.-.
6JI Ky/e Kriesel Date: A11,6. /-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PEUPRIEL1ARY           !NFiUVJM'\1IUNJ          W+/-ITHHGLij   ta'tt~H elUiJLJA  tJtttLt~atit Sheet 1 of 11 Status: Y] NE] UM--]
Seismic Walkdown Checklist (SWC)
Equipment ID No. B-1                             Equip. Class, (20) Instrumentationand Control Panels and Cabinets Equipment Description CONTROL PANEL B-1 Location: Bldg. TURB               Floor El.                Room, Area CNTRL RM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YLI- NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YZ NDI       UF' N/A-
: 3. Is the anchorage free of corrosion that is more than mild surface             YZ NDI UD- N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YO NDI UD- N/AD
: 5. Is the anchorage configuration consistent with plant documentation?           YD- NDI UD N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YZ NEI UF' potentially adverse seismic conditions?
'Enter the equipment class name from Appendix B: Classes of Equipment.

      / " " r T'T'   " r " -"* "- T " r "1 ","   M "" ''I3
                                                                 / WITh1HOLDP        PROM PU4B3IC Tfl\TT~Trm7rv, T~\~h7~m-/\~r    PIGIMCOIURE Sheet 2 of 11 Status: YV[ NEI UM Seismic Walkdown Checklist (SWC)
Equipment ID No. B- 1                                      Equip. Class' (20) Instrumentationand Control Panelsand Cabinets Equipment Description CONTROL PANEL B-1 Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                      YO NEI U[3 N/A[l
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,                 YZj N-I Ur1 N/AZI and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                              Y[D NEI UE- N/AZI
: 10. Based on the above seismic interaction evaluations, is equipment free                     YI    Nil UR of potentially adverse seismic interaction effects?
Other Adverse Conditions II. Have you looked for and found no other seismic conditions that could                      YO NZI UZ adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lorv                                                                      Date:      ,(1-    "2-Difeep Cherlopalle            c-- y - n~', kP-,         w          A                      ic IC 12-   -

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI - Il-)THHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

T.~mTTC, h ~~~~\Tr ThT1T T&#xfd; /     &#xfd;TT'PT P&#xfd;CTTT)T Sheet i of 18 Status: YFJ NN uZ&#xfd; Seismic Walkdown Checklist (SWC)
Equipment ID No. B15 LOGIC-2                       Equip. Class' (20)Instrumentationand ControlPanels and Cabinets Equipment Description BUS 15 LOGIC RELAY CAB 2 Location: Bldg. TURB                 Floor El.     &#xfd;          Room, Area BUS 15 SWG Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one          YN NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                    Y[    NDI U-] N/AD-One anchorbolt is missing out of the four anchors.Anchorage was verified againstthe SOUG SEWS which described the anchorageas three 1/2" diameter anchorbolts with one bolt missing. SWEs confirmed one anchorbolt was missing.
: 3. Is the anchorage free of corrosion that is more than mild surface                    YE NEI UD- N/AED oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?             Yj NDI UD- N/AD-
: 5. Is the anchorage configuration consistent with plant documentation?                   YE NDI UD N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                    YN NEI UD-potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PRflPPTFT7~P~         TNFC)PMATTCN           WiTHTHOLD T     "iscL*"
ROM PUTLiC Tr           T Sheet 2 of 18 Status: YE] NZ U[-"
Seismic Walkdown Checklist (SWC)
Equipment ID No. B15 LOGIC-2                   Equip. Class1 (20) Instrumentation and Control Panels and Cabinets Equipment Description BUS 15 LOGIC RELAY CAB 2 Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?         YED NEI US- N/AS1
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,    YO NIZ US- N/AS-and masonry block walls not likely to collapse onto the equipment?
A light fixture is touching the electricalconduits feeding the Bus 15 Logic Relay cabinet 2, which contains essentialrelays.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Pleaserefer to the table contained in Appendix F for the disposition of this observation.
: 9. Do attached lines have adequate flexibility to avoid damage?                 YN NEI US- N/AS1
: 10. Based on the above seismic interaction evaluations, is equipment free        YEr NO U0 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could         YZ NO US]
adversely affect the safety functions of the equipment?
Cabinet internalswere inspected and no loose or missing hardware for mounting internalcomponents were found.
Comments (Additional pages may be added as necessary)
: 1. Foreign materialwas found inside the cabinet at the bottom (one screw and a piece of wire insulation).
WR 83773 has been initiated to remove the foreign materialinside the cabinet.
: 2. Foreign materialwas found under the cabinet between Relay cabinet I and 2. It was removed by plant personnel.
Evaluated by: Dileep Cherlopalle       c -v'.               .,,r  P                  Date:    i0-29 . .
Bruce M. Lorv Bruce M. Lorv Brucey.
A          A.Lr                                     If(~f/~
                                                                                                 -j5 I- / ,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WITHHOLD FROM PUBLIC DISCLOSUREF The remaining pages are withheld from public disclosure.

I  ~~    ~     N     I iilT. I-       IiMiiII'111TI f-"t               r;NI:     J.'                 ;
Sheet 1 of 4 Status: YN NO] UL-Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31059                              Equip. Class' (*O)FluidOperated Valves Equipment Description 11 TDAFWPMP TRIP THRO7TLECV Location: Bldg, TURB                    Floor El.               Room, Area 11 AFWP Manufacturer, Model, Etc, (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one      YE- NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                YO NEI UE-] N/AO
: 3. Is the anchorage free of corrosion that is more than mild surface                 YO NEI UO N/AO oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?        YE NE UE N/AO
: 5. Is the anchorage configuration consistent with plant documentation?              YO NEI UE N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of               YO NO UO potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment,

I PROPRIETARY            1NFGR?4AEP1GN-           OwITTTTiOTLD   FROm Pu'LI"iT T       I"seEL    T1uRE Sheet 2 of 4 Status: YZ NEI UI-'
Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31059                     Equip. Class1 (07) Fluid Operated Valves Equipment Description 11 TD AFW PMP TRIP THROTTLE CV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YZ NEI UE] N/AE The light fixture has an open "S"hook. The remainingchain will ensure the equipment is not impacted,so there is no seismic concern.
CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been Identified during these walkdowns. In addition to this action request, WR 83556 has been initiatedto addressthese observations.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,  YM NEI U[J N/AD and masonry block walls not likely to collapse onto the equipment?
The sprinklerpiping is rod hung and is not a seismic issue.
: 9. Do attached lines have adequate flexibility to avoid damage?               YI   NO- Ur-1 N/A' 10, Based on the above seismic interaction evaluations, is equipment free      YN NIl UM of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       Y[D NE UO adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Dordevic                       /uV   WH&#xfd;                     Date:       1)        )V Kyle Kriesel                                                      Date:    / \.2 5'/Q,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! - WITHHOLD FROM PUBLIC DISCLOSURE

T-MTTTT&#xfd;T    &#xfd;             &#xfd;TT&#xfd;T &#xfd;f"   &#xfd;&#xfd;T        &#xfd;&#xfd;TT&#xfd;"
PROPRIET-ARYk            !NFQRD4AT-!N               TTr~Trr,        T/7RTTTTT(              h  '(T/T~
Sheet I of 3 Status: YN NEI U1]
Seismic Walkdown Checklist (SWC)
Equipment ID No, CV-31153                        Equip. Class' (07)Fluid-OperatedValves Equipment Description 11 TD AFW PMP RECIRC/L-O CLG CV Location: Bldg. TURB                Floor E.*_                Room, Area 11 AFWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchoraire
: 1. Is the anchorage configuration verification required (i.e,, is the item one       YD- N of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                  YE] NEI UD N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface                  YE] NEI UE] N/A.23 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?          YE] NE] UD-N/A0
: 5. Is the anchorage configuration consistent with plant documentation?                YE] NEI UE- N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                 Y    ND U0]
potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

nnnnn7vm7\b-v              7NTi-nnwA A m-rnxT         T,7-rPMTTTnT     1-% Vn nT,/r nTTT')T    Tf&#xfd;    T'%70f"T       rQTTTIT&#xfd; D~~~~~f\ThD~~~~~~~~
7~T'1. T-''7.D        TTtTT\                              -. -h
                                                                                                 -~~(D            -(C-h - - - -
                                                                                                            -'Ch-hTD Sheet 2 of 3 Status: YZ NEI UM Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31153                            Equip. Class1(_07) Fluid.OperatedValves Equipment Description 11 TD AFW PMPRECIRC/L-O CLG CV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                        YE     NEI UD- N/AU The light fixture has no open "S"hooks.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI U-                                  N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                YZ NDl U[- N/AD
: 10. Based on the above seismic interaction evaluations, is equipment free                       YZ NO UD of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                        Y[      NDI UD-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
___A Evaluated by: Walter DMordevic                                      1         _A_                  Date:           I Date:             aO&#xa2;,r.*" 1.2..
Kyle KrWesel                 !N
                                                ,/*

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE

SP0PRTw9RPTAnYTNCRMTT                                 WI~hOLDFROm PUBLIC DISCLOsuRH Sheet 1 of 4 Status: YN NO- U0-Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31423                         Equip. Class1 (07)Fluid Operated Valves Equipment Description 12 DD CLG WTR JCKT CLR OUTL CV Location: Bldg. SSCN                Floor El.      &#xfd;         Room, Area 12 DD CLWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YEI NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE-] N[-1 U[] N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface             YEI] NEI UD- N/AZ oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YEI N[] UE] N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?           YLI NEIl U[- N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YM NO UE7 potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

T.TTmTTTTr~T fi fifif\1~A ThTTThT T f~  fiT  C' /'T  r\C'TTThT, Sheet 2 of 4 Status: YN NE] UE-Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31423                    Equip. Class' (07) Fluid Operated Valves Equipment Description 12 DD CLG WTR JCKT CLR OUTL CV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?             YN NEI UEI N/AI-
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,        YE NE] UE- N/AI-and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                     YE NEI UL! N/AZ"
: 10. Based on the above seismic interaction evaluations, is equipment free            YN NEI UE-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could             Y[     NEI UE--
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lorv         A~           ,6K~                                   Date:          /0 Dileep Cherlopalle      c -J. tV \ Pe      .

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRePRIET-ARY            !NFGRMAT-EEE)N              .IWITHHOL..FREW PUBLIC DISCLOSURE Sheet 1 of 5 Status: Y0 Nil UE-Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31505                        Equip. Class, (07) Fluid-OperatedValves Equipment Description Q1 DSL GEN CLG WTR SPL Y CV Location: Bldg. TURB               Floor El.              _ Room, Area EDG D- I Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YO NO of the 50% of SWEL items requiring such verification)?
There is a pipe support on valve body to Emergency Diesel Generator skid.
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YE- NE UiE N/A[
: 3. Is the anchorage free of corrosion that is more than mild surface            YE NEI UEr    N/AN oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YE NEI UE- N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?          YEI NEI UE- N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YO NEI UE1 potentially adverse seismic conditions?
'Enter the equipment class name from Appendix B: Classes of Equipment.

nae-Nnn7m'fI
       .t..t*.,J.*'.l.*..t..t.u .l.Z--X.t',..l.
T
                                                .l.a.*l I." ",.J.tX./.-lZ*...t. ,a. V*
WTTTTTTieEfl P            Ep~Ce  PTT~uhT.TC   BlTT&'E)SUTE Sheet 2 of 5 Status: YO* NE] U7]
Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31505                                                             Equip. Class1 (07)Fluid-OperatedValves Equipment Description Dt DSL GEN CLG WTR SPLY CV Interaction Effect
: 7. Are soft targets free from impact by nearby equipment or structures?                                             YM NO UEI- N/A[
The overheadlighting fixture "S"hooks are closed,
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,                                        YO NI U-I N/AC]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                     YU NCI UC- N/AC
: 10. Based on the above seismic interaction evaluations, is equipment free                                            YN NEI U7 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                                              YS NEI UEI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Wally Diordievic                                                                                           Date:        L6, L,-"r /LL..
Kye Kriesel

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SZUSI - IAlrrTHHOLD FROM PUBLIC I      DI'RSC*LOS The remaining pages are withheld from public disclosure.

nDnnVTVMAVV           TMVnDMAMTnM               WTHHOL-D FROM P&#xfd;3BE4 MM'~M7m~N DDIVDDT1'm7\-r                  DISGCLOSURB Sheet i of 9 Status: YN NF] UD--
Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31652                         Equip. Class1 (07) Fluid-OperatedValves Equipment Description 11 CLG WTR STRNR BCKWSH CV Location: Bldg. SSCN                Floor El.      &#xfd;         Room, Area SOUTH Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YE'NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YEI NEI ULJ N/AO
: 3. Is the anchorage free of corrosion that is more than mild surface            YE- NEI    UE- N/AO oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YE- NEI UE] N/A0
: 5. Is the anchorage configuration consistent with plant documentation?          YE- NE UE- N/AO (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YZ NEI UE-potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY            1NE2GRMAT-!9N               OP.TRJ.YieT3I.L.-     FROM PUBLI    DI3CL.lJ       r Sheet 2  of 9 Status: Yx'    NE] UD[
Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31652                        Equip. Class1 (07)Fluid-OperatedValves Equipment Description 11 CLG WTR STRNR BCKWSH CV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                 YO NEI ULI- N/AE
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI ULD N/AE' and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                         YZ NEI Ur"] N/AE
: 10. Based on the above seismic interaction evaluations, is equipment free                YZ NEI UE of potentially adverse seismic interaction effects?
Other Adverse Conditions 1t. Have you looked for and found no other seismic conditions that could                 YE NEI UE-I adversely affect the safety functions of the equipment?
The conduit feeding power to CV-31652 has one conduit clamp that is missing a nut. SWE's judge existing conduit configuration is still seismically adequateand acceptable. However, it is recommended that the nut is put back on.
CAP 1353581 has been initiatedto evaluate this observation.
Additionally, WR83924 has been initatedto addressthis observation.
Comments (Additional pages may be added as necessary)
SWEs noted that CV-31652 FIR and CV-31653 FIR are mounted to a single vertical unistrut with just one machine screw. The machine screws are not fully threadedinto their associatednuts. Instead they are approximatelyhalf threadedinto the nuts. SWEs judge current configurationas acceptable for seismic loading, but full threadengagement is needed.
CAP 1353368 has been initiatedto evaluate this observation. Additonally, WR 83878 has been initiatedto addressthis observation.
Evaluated by: Bruce Lory                                                                    Date:
nilteev_ (*hrlonnfhl          -
L- -1A -
                                                  *. 02n  &#xfd; U-. .-         Tc- A\l. I     -          i c) 6 Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

      &#xfd;     &#xfd;&#xfd;  &#xfd;&#xfd;Mm     &#xfd; IT &#xfd;X=fnhfiA       M r fKT     1011EUILICII n  T,&#xfd; =4 T=P I T 12  ;) T r- =  C) WI TQ ;;:
Sheet I of 4 Status: YZ NEI U7 Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31953                           Equip. Class' (07) Flud-OperatedValves Equipment Description D1 DSL GEN AIR START CVA Location: Bldg. TURB                   Floor El._.           Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YEI N[K of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YE] NE] UO N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface             YE] NO] U- N/AN oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YO NEI UD N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?            YE NEI UE] N/AS (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of             YO NO] U potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

k'idd k'ft +/- &fPdt Y    +/-24 i'(dftfPdkT +/- dfq     W+/-Tfttt(Jt:3t)  t'fttJM rtJJ:If]=
Sheet 2 of 4 Status: YR NEI UE[
Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-31953                         Equip. Class, (07) Fluid-OceratedValves Equipment Description D1 DSL GEN AIR START CV A Interaction Effects
: 7. Are softtargets free from impact by nearby equipment or structures?             YZ NEI UE] N/A[I Soft targets are protected by a mesh guard anchoredto skid walkway and floor checkered plate.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YE NE]1 U[] N/A[:]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                     Y[D NEI Ur] N/AEr
: 10. Based on the above seismic interaction evaluations, is equipment free           Y[    NEI urE-of potentially adverse seismic interaction effects?
Other Adverse Conditions l1. Have you looked for and found no other seismic conditions that could             YE NE] UE]
adversely affect the safety functions of the equipment?
An attached flex line touches the airoperatorbut there is no opportunity for differential movement.
Comments (Additional pages may be added as necessary)
                                                                    - Evaluated by: Walter Diordievic                               /A) #r                    Date:
Kyle Kriesel                                                           Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WITHHOLD FROM PUBLIC DISCLOSU.RE The remaining pages are withheld from public disclosure.

PRO)PRiETARY iNPOR&#xfd;TiO)N                        WITHHIIOLD    FREW P.....      DI.SCL.SURE-Sheet i of 6 Status: Y-   NEI U[--
Seismic Walkdown Checklist (SWC)
Equipment ID No. CV-39401                          Equip. Class1 (07) Fluid-OperatedValves Equipment Description 11/13 FCU CLG WTR SUPPLY CV Location: Bldg. AUX                  Floor El.
* Room, Area NORTH Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YEI NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE] NE] UF- N/AO
: 3. Is the anchorage free of corrosion that is more than mild surface            YE] N[-] U[== NIAO oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    Y[:] NEI ULi N/A0
: 5. Is the anchorage configuration consistent with plant documentation?          YEI NE] UE] N/AN (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
The valve is line mounted.
: 6. Based on the above anchorage evaluations, is the anchorage free of           YO NEI UE3 potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

       '-"      ."-          i
* _*,.__r                     k- '   4-'..'
4!+/-!PL"X   v4 VU'' L-    L+,- _    Ui Sheet 2 of 6 Status: Y-I NO uoi Seismic Walkdown Checklist (SWC)
CV-39401 Equipment ID No. sEquip.                                    Class (07) Fluid-Operated Valves Equipment Description 11/13 ECU CLG WTR SUPPLY CV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                   Y[I NiL U-- N/A-1
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,              YED NEI U-1 N/AEl and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                           YN NEI UED N/AED
: 10. Based on the above seismic interaction evaluations, is equipment free                  YEl NED U--
of potentially adverse seismic interaction effects?
It appears that CV-39401 is in close proximity to or touching some rigid conduits. The conduits feed power to CV-39404 (12 FCU CHLD WATER SPPLY CV). During a seismic event, the valve may come into contact with the conduits.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                   YN NEIl U[--
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle            C,-.V\' Aeep.*e_&#xfd;;._      Rz  @A 91-4.            Date:      \o-  2--4-12.-
Bruce M. Lorv         BrutR AkLorv                                                         16 - 13
                                                                                                        /8-2   ~ -/
                                                                                                                  -/  a.-
2-Bruce M. Lorv J

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUN'SI -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRSiPRikTARn           iNFCeRMAT(iS     N       WITHHO'TTD FREW            "
                                                                               "rLi'i*Z      lTET-URE Sheet i of 9 Status: Y[I NE] U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. D-1                               Equip. Class1 (20) Instrumentationand Control Panels and Cabinets Equipment Description CONTROL PANEL D-1 Location: Bldg. AUX                   Floor El.
* Room, Area CNTRL RM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one    YO ND of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              YO NEI U-- N/AD1
: 3. Is the anchorage free of corrosion that is more than mild surface              Y[D NDI U-D N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YO NEI U[D N/AD
: 5. Is the anchorage configuration consistent with plant documentation?            YO NO UD1 N/A[-
(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
See SWC for E-1 component for anchoragedescription.Anchorage verification was performed using SQUG SEWs. The anchorage verification is confirmed.
: 6. Based on the above anchorage evaluations, is the anchorage free of             YO NEIUE potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

WITHHOLDE3    FROM PUBICI       D!GI=SCLOSRE Sheet 2 of 9 Status: YZ ND--     UL-Seismic Walkdown Checklist (SWC)
Equipment ID No. Q-1                          Equip. Class1 (20) Instrumentationand ControlPanels and Cabinets Equipment Description CONTROL PANEL D-1 Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YED NEI UI] N/AE!
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NO UE[      N/AZ!
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YN NEI U!1 N/AZ!
I
: 10. Based on the above seismic interaction evaluations, is equipment free     YN NEI     U]-1 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      YZ NEI UZ1 adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce Lory         ,4.                                             Date:   11-1-3-.12.
Date:     k\-   --
QileeQCherk alle       c--   i>I&#xfd;eR.Dv

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

SsPRWPRaTkAdow         CNFiRMATI(W          N        1-1T=T111U. P Ti'tQfl 1DT;Tfl.-    hfATCVT1P Sheet i of 6 Status: YZ NF] UM Seismic Walkd own Checklist (SWC)
Equipment ID No. DI/GEN RLY PNL                    Equip. Class' (20) Instrumentation and Control Panels and Cabinets Equipment Description D1 DSL GEN RELAY PNL Location: Bldg. TURB                 FloorlEl.&#xfd; .           _ Room, Area EDGD-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YO NEI of the 50% of SWEL items requiring such verification)?
There are four 1/2" anchors.
: 2. Is the anchorage free of bent, broken, missing or loose hardware?               YZ NEI UD N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface               YS ND U[:] N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?       YOI NEI UD N/ADJ Minor cracks were identified in the grout pad. The cracks are not a seismic concern.
: 5. Is the anchorage configuration consistent with plant documentation?             Y9 NC" U'- N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
SWEs used SQUG SEWS for anchorage verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of              YO NEI UE' potentially adverse seismic conditions?
IEnter  the equipment class name from Appendix B: Classes of Equipment.

Sheet 2 of 6 Status: YO NE] U-]
Seismic WalkdowEChecklist (SWt)
Equipment ID No. DI/GEN RLYPNL                Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description DQDSL GEN RELAY PNL Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YO NEI ULJ N/AE]
The "S" hooks for lighting fixtures are closed.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI UD N/AO and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YO NEI UE] N/AOl
: 10. Based on the above seismic interaction evaluations, is equipment free      YZ NEI U-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NEI U-I adversely affect the safety functions of the equipment?
The internalcomponents were inspected, and no anomalies were identified.
Comments (Additional pages may be added as necessary)
I*      /
Evaluated by: WalterDiordievic                                                    Date:        -,  5,    IV_
Kule Kriosal                                                               /10?.- 6,42/7 KvIA Kriesel

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report S1UN1Sl1 -WAIITHHOIID FROM PB II IC DISCLOSU

P.RpRiET-ARY            iiiFORmAT"i"..            WIEE"HhD-IRO*
                                                           ..                  PUBeIC BiSe.Ls.,.LM Sheet i of 9 Status: YE] NI       U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. E-1                                Equip. Class' (20) Instrumentationand Control Panelsand Cabinets Equipment Description CONTROL PANEL E-1 Location: Bldg. AUX                  Floor El. 1       1        Room, Area CNTRL RM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one    YN NIE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              YER NEI UD- N/A[D
: 3. Is the anchorage free of corrosion that is more than mild surface              YOl NEI U-     N/ADl oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YZ NO U'- N/AD]
: 5. Is the anchorage configuration consistent with plant documentation?            YZ NO UE- N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
The SWEs referenced the SQUG SWEs for the anchorageverification.
Each of the three bays contain six 3/8" diameterbolts (3 on the front side and 3 on the rearside) anchoringthe panel to structuralsteel. The structuralsteel frame is welded to the steel floor plate using 2" by X" fillet welds on 12' centers.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YN NEI UE1 potentially adverse seismic conditions?
 ' Enter the equipment class name from Appendix 13: Classes of Equipment

PReFRIERTARY 11iFeRMATIEW                      PRORI WIThhOLD8H TAR INOI~ATFREW ON   PUBELIC DTSeLOSU1UE Sheet 2 of 9 Status: YO] NH UF]
Seismic Walkdown Checklist (SWC)
Equipment ID No. E-1                            Equip. Class:' 20) Instrumentationand ControlPanels and Cabinets Equipment Description CONTROL PANEL E-I Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YO NO U-' N/A[-
The partitionwall next to E-1 is missing all six floor bolts. The bolts connecting the partitionwall to the vertical walls are in place. Is the partition wall seismically qualified in this configuration?
CAP 1357500 has been issued to track this issue.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,   YZ NEi UIJ] N/AE]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                YO NE] UE] N/AE]
: 10. Based on the above seismic interaction evaluations, is equipment free        YM NEI UO of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        YZ N[] UE]
adversely affect the safety fimctions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce Lory            1            )~                                Date:       () 2    -
Difeep Cherlopalle     C   .   ~                                    Date:         2\-
2-- 'k--

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  I.A!!T.HOLD FRO. PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

       - PRePRIEHTARY           iliFeRlohkTleN - PRORIEARYINFR~TION WIETHHOLDf FROM PUBLIC EDISehOSURE Sheet I of 15 Status: Y[] NO U[-i Seismic Walkdown Checklist (SWC)
Equipment ID No. EM-B1                             Equip. Class' (20) Instrumentationand Control Panelsand Cabinets Equipment Description EVENT MONITORING RACK EM-BI Location: Bldg. AUX                  Floor El.     &#xfd;          Room, Area TRN B EVENT MON Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YE NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             Y0 NEI UfI- N/AD1
: 3. Is the anchorage free of corrosion that is more than mild surface             YS NEI UL- N/AD1 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YN NEI U-1 N/AD
: 5. Is the anchorage configuration consistent with plant documentation?           YO NEI UD1 N/AZ1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
The SWEs referencedthe SQUG SEWs for anchorage verification.
: 6. Based on the above anchorage evaluations, is the anchorage free of            YN NEIUE potentially adverse seismic conditions?
' Enter the equipment class name from Appendix B: Classes of Equipment.

PROpRIET-ARY iNPOR&#xfd;&#xfd;TiON                    WIT-11OLDI      FROM PUBTIG DISC-13GSUE Sheet 2 of 15 Status: YLI NO UI--
Seismic Walkdown Checklist (SWC)
Equipment ID No. EM-B1                         Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description EVENT MONITORING RACK EM-B 1 Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?        YO NEI U[] N/AS-
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,   YEI NEI US1 N/AS and masonry block walls not likely to collapse onto the equipment?
The areahas restrictedspace that does not allow enough room to use a ladder to inspect the lighting fixture "S"hooks. This is not a seismic concern.
: 9. Do attached lines have adequate flexibility to avoid damage?                YED NEI US' N/AS
: 10. Based on the above seismic interaction evaluations, is equipment free       Y(    NEI U[-
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could        Y5 NZ U[-
adversely affect the safety functions of the equipment?
On the inside of EM-B 1 there is a single screw and washer missing from the left vertical support. The remainingtwo screws and washers are present.
Site engineeringreviewed this condition, and determined it is not a seismic concern. See appendix F for disposition of this observation.
However, WR 83653 has been initiated to correct the condition.
Comments (Additional pages may be added as necessary)
Evaluated by: Dileen Cherlovalle        C -L.           -                          Date:     %o -     I-Z--
I*                  f.l Bruce Lorv         A- A r&#xfd;-Ir                                       Date:    /O-Ze-.4z

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report S'JN'S- WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

        ----P     PR!ETARY--1-.'.---R.- P 11&#xfd;`N-PRR- WI1HHOLDEETRY NFOM ~-~ FRO)M PUBLICe Bisefiesb Sheet 1 of 14 Status: YE[] NM U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. MCC 1T2/XFM SW                     Equip. Class' (04) Transformers Equipment Description MCC I T2 XFR SW Location: Bldg. AUX                   Floor El.                 Room, Area    122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one     YI- N of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?               YZ NI] UD- N/A[1
: 3. Is the anchorage free of corrosion that is more than mild surface                YO NEI    U[i N/AZ oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?        YE NI] U[-1 N/Ail
: 5. Is the anchorage configuration consistent with plant documentation?              YLI NEI U-I N/AN (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is tile anchorage free of              YZ NEI U-potentially adverse seismic conditions?
1 Enter  the equipment class name from Appendix B: Classes of Equipment.

       -   J34RW    1-'.VX       i                   -~IL.J~'
WULTm1I4ULIJ+4- +-ft   ~ Uf4' Sheet  2 of 14 Status: YO--    NO UFI Seismic Walkdown Checklist (SWC)
Equipment ID No. MCC 1T2/XFM SW                 Equip. Class' (04) Transformers Equipment Description MCC I T2 XFR SW Interaction Effects
: 7. Are soft targets fiee from impact by nearby equipment or structures?            YN N[D UD- N/AD
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YD NE UD N/AD and masonry block walls not likely to collapse onto the equipment?
Regarding the light fixture, both of the bottom "S"hooks are open.
During a seismic event the light fixture may fall on to the lever of the MCC IT2 transferswitch and may trip the equipment. The light fixture is 52" above the disconnect which appears to be right underneath the light fixture. The power cord is hard wired to the ceiling and appears to have some slack.
CAP 1352001 has been initiated to evaluate the open "S"hooks identified during these walkdowns. In addition to this action request, WR 83556 has been initiatedto address this observation.
: 9. Do attached lines have adequate flexibility to avoid damage?                    YN NDI UD N/ADl
: 10. Based on the above seismic intcraction evaluations, is equipment free           Y[D NM UD of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could            YZ NED UD]
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
There is foreign materialbehind the transfer switch 1, near the wall (an 0 ring that is red in color). It is a housekeeping issue, and not a seismic concern.
CAP 1352321 has been initiated to address the foreign material identified during these walkdowns.

r- +/-.d-   . hJ: ,-*rLt T  rJ: J .J     a:         J. .L+/-.LJ .. j JJ*
                                                                            .dL.J . L.J- 1" rj.- J . j.LJ JJ    ..
Sheet 3 of 14 Status: YE-- NO U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. MCC 1T2/XFM SW                     Equip. Class, (04) Transformers Equipment Description MCC 1T2 XFR SW Evaluated by: Dileep Cherlopalle          co. \.             ,..,-'.P
* Date:      \I - N - "')-
Rrlffe M I orv Bruce.....      Lorv

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

L PRepRiHTARY iiiFeRmATieiiPROPRETAR                        INFO~TIO WITHHOLD       FROM PUBLIC        ICLSR Sheet i of 4 Status: Y1Z NO UI-Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32017                         Equip. Class' (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description LOOP B MN STM TO 11 TD AFWP MV Location: Bldg. AUX                 Floor El. &#xfd;      _       Room, Area EAST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL, The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YEr   NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE] NE UO N/AS
: 3. Is the anchorage free of corrosion that is more than mild surface            YE NEI U] N!AM oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YE NEI U1 N/AN
: 5. Is the anchorage configuration consistent with plant documentation?          YE1 NEI UI1 N/AH (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YI0 NEI UEl potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

      'PROPRIETARY !NPO)R1AT-lN                      wiT-iiOLD~FROm PuBEie DiseEOsuRnE Sheet 2 of 4 Status: YX ND UM Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32017                      Equip. Class, (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description LOOP B MN STM TO 11 TD AFWP MV Interaction Effects 7, Are soft targets free from impact by nearby equipment or structures?     Y2 NEI UE     N/AU The rod support for the main steam isolation valve is within I "of the handwheel, However, the restraintsprevent sufficient axial movement to close the gap. It is not a seismic concern.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ N["] UEI N/A-and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YV NE U0 N/AU A small line supplying power to the motor valve is in contact with the conduit, but it does not pose a credible seismic concern.
: 10. Based on the above seismic interaction evaluations, is equipment free     YN NEI UM of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YN NEI UE]
adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated                                                                         Date:     0. L     fit

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRGPRIETARY              !NFQPcP4AT-1QN             WITHHO1TGLTD *rOM     PUBLT"C   DITrCLOSUR' Sheet I of 4 Status: YZ NEI- Uf-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32025                         Equip. Class' (08)Motor-Overatedand Solenoid-Overated Valves Equipment Description 11 TDAFWPMP SUCTCL SPLYMV Location: Bldg. TURB                Floor El.     &#xfd;       .. Room, Area 11 AFWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage I. Is the anchorage configuration verification required (i.e., is the item one YI- NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YQI NEI UO N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface            YOJ NIU UQ1 N/AO oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    Y--] NEI U-- N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?          YEI NE UE3 N/AO (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
6, Based on the above anchorage evaluations, is the anchorage free of           YZ NO UI-potentially adverse seismic conditions?
1Enter the equipment class name from Appendix B: Classes of Equipment.

I   I ''-'F WA Sheet 2 of 4 Status: Y] N[] Ur"]
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32025                     Equip. Class' .O8)Motor-Operated and Solenoid-Ooerated Valves Equipment Description 11 TD AFW PMP SUCT CL SPL Y MV Interaction Effects 7, Are soft targets free from impact by nearby equipment or structures?      Y[    NCi UC- N/AO
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NrC UCI N/AC and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?               YU NEI UC N/AC
: 10. Based on the above seismic interaction evaluations, is equipment free      Y*0 NEI UEC of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YE NC-] UC-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
                                                                    .4 Evaluated by:. Walter Diordievic                   ... I V4A I iA',    -I-    -  Date:     j5       1" KyLe Kriesel K                                                     Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUN,%SI WITHHOLD FROM" PUBgLIC DISCLOSURE The remaining pages are withheld from public disclosure.

   *PROPRIETARY !NFORMAT-1N                             wiT~iffiefL    PROm     iPUD~iCe fDi-seLJuRH Sheet Iof 2 Status: YM N[] UL]
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32034                        Equip. Class, (08) Motor-Opera*ed and Solenoid-Operated Valves Equipment Description 121 CLWP DSCH HDR MVA Location: Bldg. SSCN               Floor El.
* _ Room, Area SOUTH Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Auchoraieg 1, Is the anchorage configuration verification required (i.e., is the item one  YO NZ of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YE] NEI U-- N/A0
: 3. Is the anchorage free of corrosion that is more than mild surface             YE] NE] UO] N/AR oxidation?
4, Is the anchorage free of visible cracks in the concrete near the anchors?      YE] NEI UE- N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?            YE] NEI UE] N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of             YZ NO u]
potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

       "C)=T9WAPU             TNP(Zj-Am--xT            W T- piih' h P~~flPPTF.T ~ ~ ~ Rem7  iUBLIe TN''TMrT-h TTIILBi3CLfoesRE Sheet 2 of 2 Status: YZ NEI UM Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32034                      Equip. Class 1 (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 121 CL.WP DSCH HDR MV A Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                YEI NEI UD- N/AD
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[D ND] UD" N/AD-and masonry block walls not likely to collapse onto the equipment?
The fire protectionpiping with mechanicalcouples is far enough away to not pose an interactionhazard.
: 9. Do attached lines have adequate flexibility to avoid damage?                        YN NDI UD' N/AD
: 10. Based on the above seismic interaction evaluations, is equipment free               YO NEI UD of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                YZ NDI     UDI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordievic                                                             Date:        /(j  L.     ,/l, Dennis Zercher

   -PROPRIETARY            "I-T*TT"iLD bir-"R7* ".UBLIC TI"N                        FRm                DISL       .
URE*...
Sheet: of 5 Status: Y0 NO] UE]
Seismic Walkdown Checklist (SWC)
Equipment ID No, MV-32077                        , Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description SUMP B TO 11 RHR PMP TRN A (OUTSIDE) MV Location: Bldg. AUX                  Floor El.            _ Room, Area 11/12 CNTM SPRY RM Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YEI NE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE] NEI UE] N/AN
: 3. Is the anchorage free of corrosion that is more than mild surface            YE] NE] U-] N/A9 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YO] NO UDI N/A[
5, Is the anchorage configuration consistent with plant documentation?           YEI NE] UE3 N/AE (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YZ NO UE" potcntially adverse seismic conditions?
Enter the equipment class name from Appendix B: Classes of Equipment,

I ReER+/-HTARY                     EiUFeORMATiONi      wiTfiIIOLD      FRem PUBLie ECseiCCOuRB Sheet 2 of 5 Status: Y[J NO U-]
Seismic Walkdown Checklist (SWC)
Equipment MDNo. MV-32077                              Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description SUMP B TO 11 RHR PMP TRN A (OUTSIDE) MV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?          YZ NO UL- N/AFl The light fixtures have closed "S"hooks.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,     Y21 NEI UI N/AO' and masonry block walls not likely to collapse onto the equipment?
The scaffolding is erectedproperly. It is taggedand inspected.
: 9. Do attached lines have adequate flexibility to avoid damage?                  YZ NE UO N/A[l
: 10. Based on the above seismic interaction evaluations, is equipment free           YM NEI U' of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could            Y[R NO UO adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
P-AVIaf 'MJlV JUl*VJ** .7 Wlf P VJ*IJU UIKJg I J&#xa3;UVWb                                              Date:;     i    --h-/
K le Kriesel                                                        Date:  /19,7,2'   /Q.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

PRE)PRIETARY            !NFE)RMATIER4               WITIIIIOLD    RFOM PUBLIC DISCLOSURE Sheet 1 of 3 Status: YN NE] UL-Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32133                         Equip, Class' (08) Motor-Ooeratedand Solenoid-OperatedValves Equipment Description 11 FC CLG WTR RTRN ISOL MV B Location: Bldg. AUX                 Floor El.              _ Room, Area EAST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings, Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one Y-1 NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YL- NO UO N/AO
: 3. Is the anchorage free of corrosion that is more than mild surface           YO NE UD N/At@
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YEI N[E] UC- N/A0
: 5. Is the anchorage configuration consistent with plant documentation?          YO NE UO N/A0 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YI NO UE!
potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

PRGPRIETAR*                     !NFGRMAT!GN         TROPI'TTRY I OMT FROM WITHHOLDr             PUDLIC*     DI*TSC13OTSURE    j Sheet 2 of 3 Status: YN N[] U[]
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32133                             Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description                  1I FC CLG WTR RTRN ISOL MV B Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?           YZ NO UO N/AU The rod hangernearthe operatoris restrainedby the floor penetration.
It will not migrate towards the valve motor operator.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,      Y[    N[I UOI N/AO and masonry block wails not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                   YZ NO U[I N/AO
: 10. Based on the above seismic interaction evaluations, is equipment free           YO NEI UOI of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could             YE NOI UEI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
II                            _  _ _
P J
I tAUULLSU.
f-.A k
                   .7 4 Mfp ULV4fJlLWjV-I'll-
                                                                  /11W
                                                                   .11 U-Date:
KvI4 KrL~~J              ~                                        Date:
KvIn Mosel               .4a

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! _IATHHOLD FROM PUBLIC DISCLOSU

PROTPRIET-ARYz1INFTG'R*            T4IT**N         ITHHOLD9    FROM     PT/, EAT'   DITETOST;'r'E Sheet i of 6 Status: YZ NE] U[iI Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32145                          Equip. Class' (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description 11 CC HX CLG WTR INLET MV Location: Bldg. AUX                 Floor EI. &#xfd;              Room, Area    11/21 CC PUMP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one      YO] N of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                 YEI NEI UEr N/AO
: 3. Is the anchorage free of corrosion that is more than mild surface                 YE- NO] UL] N/AM oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?         YE] NE UE--   N/A[
: 5. Is the anchorage configuration consistent with plant documentation?               YE] NE UE N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                YO NEI UE potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

V1. .  .I.-   .. _ .   .J i U.Jl.'-- I.J      WP,.t.J..   --I.J .&#xa3;:
: i. .,' VUbL t . fi  I,'k,. U 3UL U1.
Sheet 2 of 6 Status: Y[       NEI  UL Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32145                       Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 11 CC HX CLG WTR INLET MV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?           YO N-I UE-I N/AI-
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UI-- N/A-1 and masonry block walls not likely to collapse onto the equipment?
A light fixture in the area has open "S"hook. MV-32145 is not in its zone of influence, therefore no adverse seismic interactionconcern.
CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has been initiatedto addressthese observations.
: 9. Do attached lines have adequate flexibility to avoid damage?                   YO NE] UL- N/AL]
: 10. Based on the above seismic interaction evaluations, is equipment free          YED NEL UE3 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could           YE N[-] UL-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lor.            &-~         ~10g~                              Date:        16 -ZI'2.- -
Dileep CherLopalle     ~ v-~                  z&                     Date:        Io- 2 i1.,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report S'U.NSI -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

       -------- -11            -   --- -    -             r.,rmrrrrrvr fl flfl~flR flTT1flT  rr,   ThT C' flT tNflTTflfl Sheet I of 4 Status: YNJ NE] Ut]
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32238                         Equip. Class, (08) Motor-Operatedand Solenoid-Overated Valves Equipment Description 11 AFW TO 11 SG MV Location: Bldg. TURB                Floor El.                  Room, Area 11 AFWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchoraee
: 1. Is the anchorage configuration verification required (i.e., is the item one YD NO of the 50% of SWEL items requiring such verification)?
2, Is the anchorage free of bent, broken, missing or loose hardware?                  YQi NEI U0l N/AR
: 3. Is the anchorage free of corrosion that is more than mild surface                   YEI NE UEI N/A0 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?           YO NEI UO N/AO
: 5. Is the anchorage configuration consistent with plant documentation?                 YEJ NEI UD N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                  YO NF1 UE2 potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

PROfPRIET-A1Y               T1NIVC17PAT-E2TJ        WITHHOEB~f      FT~em           IU PUtIIH~    1)1 UULURBI Sheet 2 of 4 Status: Y0 NEI U-Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32238                               Equip, Class' (08) Motor-Operatedand Solenoid-OoeratedValves Equipment Description 11 AFW TO 11 SO MV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?             YS N[-] U[I N/Ar-A light fixture south of the valve has an open "S"hook, but it is not a seismic hazard.
CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI U-I N/AC and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                     YZ NEI Uf- N/AC
: 10. Based on the above seismic interaction evaluations, is equipment free              Y(E NEI UE1 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could               YO NC UCI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
QI             f A 1, 1.* v *,t tto.I,'t,..u u y 1#-        . I-
                                                           .~
                                                                   /A'Ar L'I~     I Date:        -S-'-
Kyle Kriese]                                                      Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SJNS  -WITHHOLD FRO. PUBLICC DISCLOSURE The remaining pages are withheld from public disclosure.

WITiehBOLD    FR0ROm PuaLIC      DISCLOEie.u.
Sheet i of 3 Status: YN NEI UE Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32242                          Equip. Class, (A0)Motor-Ooeratedand Solenoid.Oooratfd Valves Equipment Description 11/12 AFW TO 11 S.Q ISOL M.V Location: Bldg. AUX                 Floor El.    &#xfd;         _ Room, Area DEMIN RMVL Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YO] NZ of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE] NO UD N/A0
: 3. Is the anchorage free of corrosion that is more than mild surface            YE] NEI UE N/AZi oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?    YE] NEI UTI N/AO
: 5. Is the anchorage configuration consistent with plant documentation?          YE] NEi   UIE] N/ANJ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           Y0 NO UT-E potentially adverse seismic conditions?
A I Enter the equipment class name from Appendix B: Classes of Equipment.

PRGPRiBTARY iNFGRMAT-iE)N P~o~rJEARY             WPCTT;TATIAfTI INFRMATION r17OM PUT=..TCJ      ICLER Sheet 2 of 3 Status, YO NEI U-I Seismic Walkdown Checklist (SWC)
Equipment [D No. MV-32242                      Equip. Class1 _(08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 11112AFW TO 11 SG.ISOL MV Interaction Effeets
: 7. Are soft targets free from impact by nearby equipment or structues?       YZ ND UE NIAI 8, Are overhead equipment, distribution systems, ceiling tiles and lighting, Y0 NO UI- N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              Y     NDEIUD N/ADJ
: 10. based on the above seismic interaction evaluations, is equipment free     Y0 NO UD of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NDL7   UD adversely affect the safety functions of tie equipment?
Comments (Additional pages may be added as necessary)
Date&#xfd;   ''7/
ofi r 1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETARY TNOrfIO                              IHOL5RMPULCDsCLO3e~b Sheet i of 4 Status: YN NDI U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32380                        Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 14 FC CLG WTR INLT ISOL MV Location: Bldg. AUX                Floor El.                Room, Area EAST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YE[   NN of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE- NEI UE- N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface            YE[   NEI UFI N/A[
oxidation?
: 4. Is the anchorage fiee of visible cracks in the concrete near the anchors?    YEI NEI UD-N/A[
: 5. Is the anchorage configuration consistent with plant documentation?          YE[   NEI UE[  N/AM (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YO NEI UE-potentially adverse seismic conditions?
'Enter the equipment class name from Appendix B: Classes of Equipment.

       +A+* k-l+'+* -I-L'2"*',..,'-'2*2,_.".-.:.k* _
M -t- _t- t-IrT i*2"T ',*'2"*"'.dk- Ak.;&#xa3;&#xa2;,         WIT.....OL3VD FROM PUBLIC DISCLOSURE Sheet 2 of 4 Status: Y[      N[-] U[-
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32380                                             Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 14 FC CLG WTR INLT ISOL MV Interaction Effects
: 7. Are soft targets fiee from impact by nearby equipment or structures?                            YN NEI US1 N/AEI
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y-- NI                           US N/AN and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                     Y[   NSI US- N/AS3
: 10. Based on the above seismic interaction evaluations, is equipment free                            YO NEI     U[-
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could                             YE   NEI USI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce Lo                                AV.-              -A---/"                         Date:  ___     __   ___    __
Dileep Cherlopalle                  C ~\/. !~~P                     OJ t C)- VB - 1;&#xfd;_  -
rU

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETFARY INFOR?4ATIO-N                         WITHHOLD) FROW PUBELIC BISCHLO)URE Sheet 1 of 4 Status: YZ NF UEi Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32381                         Equip. Class, 108)Motor-Orerated and Solenoid-Overated Valves Equipment Description 12 MD AFW PMP DISCH TO 11 SG MV Location: Bldg. TURB                Floor El.._              Room, Area 11 AFWP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YEI No of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YEI NEI UE- N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface            Y[-] NEI UE] N/ACD oxidation?
4, Is the anchorage free of visible cracks in the concrete near the anchors?     YE] NOI U-    N/AE
: 5. Is the anchorage configuration consistent with plant documentation?           YEI NE] UE1 N/A0 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YZ Nr- UFI potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PR.pRiETARY           iNFO..
                               .      ATIO....      WITi......      F-ROm PUBIC.. DiscLOCuRE Sheet 2 of 4 Status: Y< NO UE-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32381                      Equip. Class, (08)Motor-Operatedand Solenoid-OperatedValves Equipment Description 12 MD AFW PMP DISCH TO 11 SG MV Interaction Effects 7, Are soft targets free from impact by nearby equipment or structures?     YNI NO UO N/A[
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NO Ur] N/AU and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YZ NE UD N/AUl
: 10. Based on the above seismic interaction evaluations, is equipment free     YZ NU U of potentially adverse seismic interaction effects?
The valve bodies of MV-32381 and MV-32382 are approximately 1/8m apartand may interactbased on piping analysis displacement.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       Y[  NEI   UU]
adversely affect the safety functions of the equipment?
Fire Protectionpiping is less than one foot away. It is welded steel and, therefore, acceptable. The fire protection sprinkleris not immediately above MV-32381 and is therefore adjudgedacceptable.
Comments (Additional pages may be added as necessary)

1Th\1~T~ TTm1~ TV'J T1TT~/\ThT~R7~ mT/mT     IAI I IIWlll lf
* 1 I
* I.I I .. ..... . II I I J I I gI     ThTCC'T ~CT T-T" Sheet 3 of 4 Status: YZ NE] UF-Seismic Walkdown Checklist (SWC)
Equipment ID No. MV-32381                   Equip. Class' (08)Motor-Operatedand Solenoid-OVerated Valves Equipment Description 12 MD AFW PMP DISCH TO 11 SG MV Evaluated by: Walf Dordevic                                                                          Date:         /          .
Dennis Zercher                                                                         Date:   /0       -2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!- WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

T I-')/-
          &#xfd;    T*T
               &#xfd;&#xfd; T' r*r[I l' *"   "i w E  "1Cr- wm 1 ""  m
                                                     ''l' ","T     rj&#xfd;MTTTTf'&#xfd;T   &#xfd; T"T) r%?,fl T'NTTT')T  -rf&#xfd;    &#xfd;   &#xfd; &#xfd;  &#xfd;T   fN OTTr)  T&#xfd; Th~~~~~~~~~~~~~~h~~~~               TTmT~'TT     T    'lMf         hTh -~ -hT f -"T   h -,-7
                                                                                                                    -~     '~
                                                                                                                            -~Trm~
                                                                                                                               -. - -r -TT Sheet I of 4 Status: Y N[E UE Seismic Walkdown Checklist (SWC)
Equipment ID No. PNL 133/XFMR                                 Equip. Class' (04) TRANSFORMERS Equipment Description 12ST PNL 133 XFMR Location: Bldg. TURB                       Floor El.                  _ Room, Area       1I AFWP Manufacturer; Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings, Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one                        YD NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                  YO NEI U-- N/AO The six shell concrete expansion anchorsare secure. The two vertical struts and the one horizontalstrut to F9 column were all visible.
: 3. Is the anchorage free of corrosion that is more than mild surface                                   YZ NO UO N/A" oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                           YO NEI U-                N/A[1
: 5. Is the anchorage configuration consistent with plant documentation?                                 YO NOI U-                N/AO (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                                  YE NEI UO potentially adverse seismic conditions?
Enter the equipment class name from Appendix B: Classes of Equipment.

P~fPCP"-TPT?'R' ITMPP                 QbTl~     WiTHHOLD       FiRG    P.b    .ELBIG*L
                                                                                         .      .- T*O.JE Sheet 2 of 3 Status: Y[    NFI UI--
Seismic Walkdown Checklist (SWC)
Equipment ID No. PNL 133/XFMR                  Equip. Class' (04) TRANSFORMERS Equipment Description DIST PNL 133 XFMR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YZ NE UE NMAD No Impact concerns were observed.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YJ NEI UE- N/AE1 and masonry block walls not likely to collapse onto the equipment?
Welded piping with flanged valves, cable trays, and conduits are all ductile and seismicallyacceptable.
Block wall number8, adjacent to F9, is safety-related.
: 9. Do attached lines have adequate flexibility to avoid damage?              YO NEi UE- N/A[]
The lines are rigidlymounted to column F9.
: 10. Based on the above seismic interaction evaluations, is equipment free      YO N[: U7 of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       Y[    NE UM adversely affect the safety functions of the equipment?
No other seismic conditions were observed.
Comments (Additional pages may be added as necessary) 12.5 Evaluated by: Wally Dlordevic V                         Date:    /
Dennis Zercher

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS I-  WITHHO 1lD FROMIN PU1-IBLIC DISCL-OSUREl-The remaining pages are withheld from public disclosure.

Sheet 1 of 7 Status: Y[   N[- U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. PNL 136/XFMR                     Equip. Class' (04) Transformers Equipment Description DIST PNL 136 XFMR Location: Bldg. SSCN                Floor El.                Room, Area SOUTH Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one Yr- NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?           YO NDI UD N/AD
: 3. Is the anchorage free of corrosion that is more than mild surface           YE ND UD- N/AD oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?   YO NDI UD- N/A[D]
: 5. Is the anchorage configuration consistent with plant documentation?         YDI ND U-- N/AI (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of           YO NEI U[-]
potentially adverse seismic conditions?
Enter the equipment class name from Appendix B: Classes of Equipment.

PR-OPRIETARYINFQRA'iT IQN                   WITHHOLD         FROM PUBLIC-DTmrT,flTTRF Sheet 2 of 7 Status: Y[* NEI U[-
Seismic Walkdown Checklist (SWC)
Equipment ID No. PNL 136/XFMR                Equip. Class' (04) Transformers Equipment Description DIST PNL 136 XFMR Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YE[   NEI U[] N/AN The transformerdoes not contain any soft targets.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,  YZ NE' U-I N/A--
and masonry block walls not likely to collapse onto the equipment?
SWEs noted that the fire protectionpiping above the transformers contains one victaulic coupling on a 6" fire protection line. This line is configured as I" rod hung and it penetrates the nearby wall. Therefore relative angularmovement of the coupling is minimal and is not a seismic adverse condition.
: 9. Do attached lines have adequate flexibility to avoid damage?               YS NEI UI- N/AE
: 10. Based on the above seismic interaction evaluations, is equipment free      YZ N[-1 UE' of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NEI UrI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle                       k--u.re&#xfd;&#xfd;                  Date:       to - 2.S- \.L-Bruce Lorv                                                         Date:     /0 - Z I- V2-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report e*1 Ikletl afUI.aI tAhrIJllll%l lff+      fl.L;LO I
r-t IEl'* lU  rI  E'tl r-r%'jifi rU'IA.
1*1%          I 1mr-zILJ~
The remaining pages are withheld from public disclosure.

PROPRIETARY              TFRA-TT--
Sheet 1 of 11 Status: YZ NM UD--
Seismic Walkdown Checklist (SWC)
Equipment ID No. PNL 191                          Equip. Class' (14)Distribution Panels Equipment Description DC DISTRIBUTION PANEL 191 Location: Bldg. AUX                 Floor El.                Room, Area 11 RWST Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one    YN NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              YE ND U-1 N/AD]
: 3. Is the anchorage free of corrosion that is more than mild surface               YI NEI UD1 N/AD-oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YO NDI U-    N/AD3
: 5. Is the anchorage configuration consistent with plant documentation?            YO ND1 U-- N/AD1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Anchorage was verified using DC -80Y151, Appendix 116, Attachment 2, which shows four 1/2" diameterwedge anchors.
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

WITHHOLD      FROM PUBLIC DISCLOSURE                I Sheet 2 of 11 Status: YZ NRI- UI-Seismic Walkdown Checklist (SWC)
Equipment ID No. PNL 191                     Equip. Class' (14)Distribution Panels Equipment Description DC DISTRIBUTION PANEL 191 Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?       YZ NEI UI- N/Al]
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NE] UEr      N/AEl and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?               YN NEI UE] N/A-'
: 10. Based on the above seismic interaction evaluations, is equipment free      YZ NEI UE]
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NEI UI--
adversely affect the safety functions of the equipment?
The cabinet was inspected internallyand no loose or missing component mounting hardwarewas found.
Comments (Additional pages may be added as necessary)
The cabinet was inspected internallyand is acceptable.
Evaluated by: Bruce Lorv          _
* r.                                Date:   /16- Z '-/- / 2-Dileep Cherlopalle       -. p,.                                   Date:   1O - 2     N- --.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

Sheet i of 4 Status: Y    N17 U7" Seismic Walkdown Checklist (SWC)
Equipment fD No, RS-21-1                           Equip, Class" (071 Fluld-OperatedValves Equipment Description 11 SG MS HDR RELIEF Location: Bldg. AUX                 Floor El*                  Room, Area DEMIN RMVL Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings, Additional space is provided at the end of this checklist for documenting other conmments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YE] N0 of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YE] NE] UOE N/AR
: 3. Is the anchorage free of corrosion that is more than mild surface             YE] N* LIE] N/AZ oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YE] NO] UE] N/AE "
: 5. Is the anchorage configuration consistent with plant documentation?           YE] NE1 U[:] N/AN (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YE NE] UEJ potentially adverse seismic conditions?
Enter the equipment class name from Appendix 13: Classes of Equipment.

PRGPRiB!FAR*           &#xfd;Eir-eRmAT-iei            OWIrTITTTI*O  FROm
                                                                     -"    PieICe DIs"iT             T'suRE Sheet 2 of 4 Status: Y9 N[] U[]
Seismic Walkdown Checklist (SWC)
Equipment ID No. RS-21-1                     Equip. Class' (07) Fluid-OperatedValves Equipment Description 11 SG MS HDR RELIEF Interactioni Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YZ NEI UFJ N/AO
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NO Un N/AsI and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?               YZ NEI UEI MADI
: 10. Based on the above seismic interaction evaluations, is equipment free      Y0 NF U[I
      . of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NO1 UD adversely affect the safety tunctions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Wally D 1rdievlc                                                    Date: _ /     a Kyle Moisel         A                                              Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

I Sheet i of 3 Status: YZ No U[]
Seismic Walkdown Checklist (SWC)
Equipment ID No. SA-54-3                          Equip. Class, (07) Fluid Operated Valves Equipment Description D1 DSL GEN MAIN AIR RCVR RELIEF Location: Bldg. TURB                Floor El.              _ Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on.the SWEL. The space below each of the following questions may be used to record the results of'judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   Y1-   NE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YE] NE] UEJ NWAR
: 3. Is the anchorage free of con-osion that is more than mild surface              YEI NEI UFJ N/AR oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YE] NE] UE- N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?           YEI NEI UE] N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            Y1Z NE] UE]
potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

I.
I Sheet 2 of 3 Status: YN N[E]     U[-l Seismic Walkdown Checklist (SWC)
Equipment ID No. SA-,54-3                      Equip, Class' (07) Fluid Operated Valves Equipment Description Df DSL GEN MAIN AIR RCVR RELIEF Interaction Effects 7, Are soft targets free from impact by nearby equipment or structures?       YN NE ULI N/AO
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YI     NO U-     N/AO and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                YZ Nr Ur- N/AOl
: 10. Based on the above seismic interaction evaluations, is equipment free       Y0 NEI UO of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could         YN NEI UO adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Diordievic                                                    Date:      ~~              t Dennis Zercher                                 V

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WIT14HOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

t:'itu    i:,ft+/-       Y  +/-N  t' k=)ftfVf1k'+/-' +/- k=1N      W +/- +f ftft9+/-n+/-J t' ftt=$M t:4dtJfntt7      t:Jtbttt:3kJbt:Jtftb Sheet 1 of 3 Status: YE] N-] U[-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-33186                                   Equip. Class1 (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description DQDSL GEN WTR SPL Y S V Location: Bldg. TURB                    Floor El.             .       Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL, The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one                   YL NE of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                               YEI NE] U-                N/A0
: 3. Is the anchorage free of corrosion that is more than mild surface                               YE-] NE] Ur- N/AE oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                        YEV NE] UL- N/As 5, Is the anchorage configuration consistent with plant documentation?                              YE] N[] UL N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                               YN NE] UE]
potentially adverse seismic conditions?
I Enter   the equipment class name from Appendix B: Classes of Equipment.

I  PPQPQT:P&#xfd;PA.P34        TNPPPA4A.EPTAA;         PRORITAY N~~PATOHF-ROm PuDLiC ~B9EseLC~uR-wiT-iiiOLD Sheet 2 of 3 Status: YJ NE-     U7-I Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-33186                      Equip. Class1 (08) Motor-OQperatedand Solenoid-Operated Valves Equipment Description D1 DSL GEN WTR SPL Y S V Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YN NEI UFJ N/A[:]
Soft targets are protected by the Emergency Diesel Generators checkered plate walkway.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y0 NDI UDI N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YZ NDI UDI N/AD
: 10. Based on the above seismic interaction evaluations, is equipment free      Y9 NEI UEI of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YE NEI UM adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary) 4     5--..
                                                                                                              ' ft. ,
Evaluated by:                                                                      D ate :
Kyle Kriesel                                                      Date:
D/ate:- Ael-&#xfd;911

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FRO."M PU'BLIC DISCLOSURE The remaining pages are withheld from public disclosure.

1`11-1&#xfd;      -r I" MA T-) IT -r'KTI&#xfd;f-&#xfd;T)Tfl&#xfd; M -r f-%'KT   T.7-rrr1TTTTnT T-) T7nf-%Tfi nTTnT Te&#xfd;  Ti T Q (&#xfd; T n Q T TT7)1&#xfd; Sheet 1 of 4 Status: YN NE]            U[-
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-33242                                    Equip. Class, (08) Motor-Operatedand Solenoid-OneratedValves Equipment Description D1 DSL GEN AIR START VENT SV Location: Bldg. TURB                      Floor El.                     Room, Area EDG D-1 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checlist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorane
: 1. Is the anchorage configuration verification required (i.e., is the item one                YO N10 of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                           YE] NE] U-] N/A[R
: 3. Is the anchorage free of corrosion that is more than mild surface                           Y[:] NEI U-1 NIAO oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                    YO- NE] UF- N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?                          YE] NO UE] N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of                           YO NE] U'I potentially adverse seismic conditions?
I Enter the    equipment class name from Appendix B: Classes of Equipment.

T'3 "r-It* T*'r'3 T "r* m 7x "r'3"%* T *3"'r* t'* T'3 'IWI"/xm "1-t'*'P,'r     T.T&#xfd;MTTTT&#xfd;T        &#xfd;             l-)TTT)T    'rf'  T'I'rCII&#xfd;T     /"lr'TTT)71 Th1-~~~r.~~Th1-,~
TY&#xfd;               r1m7                                   1-1--'Yrhi~ Th 1v~ -            -h~l- -f -
                                                                                                               -~TT~~ -'~(~            -h - --  '' - --      -
Shcet 2 of 4 Status: YZ NR U--
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-33242                                                     Equip. Class. (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description D1 DSL GEN AIR START VENT SV.
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                      YN NEI Un- N/AE-Soft targets are protected beneath emergency diesel generator checkered plate walkway.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YM NEI U0 N/A and masonry block walls not likely to collapse onto the equipment?
They are mounted on angle iron welded to skid.
: 9. Do attached lines have adequate flexibility to avoid damage?                                                              YO] NE-1 U-               N/AE Attached lines are rigidlymounted.
10, Based on the above seismic interaction evaluations, is equipment free                                                      YZ NE UE' of potentially adverse seismic interaction effects?
Other Adverse Conditions 11, Have you looked for and found no other seismic conditions that could                                                       YZJ Ni1 UEI adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Wally Diordievic                                                                                                    Date:            1, As-Kyle Kriesel                 /*./rx                      P        "                                       Date: _,,2,4&#xfd;

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

I&#xfd; Ir I I'I" M      I'   I11I&#xfd;                    Ilt      I I I'I III  '''T'       ~ '
Sheet 1 of 5 Status: YEi NEI      Uti-Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-33343                          Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 11 CLG WTR STRNR BCKWSH SV Location: Bldg. SSCN                 Floor El.      &#xfd;         Room, Area SOUTH Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorag~e
: 1. Is the anchorage configuration verification required (i.e., is the item one      YE- NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                YEI NE] UE] N/AS Solenoid valve is line mounted as a cantilever using 1/2" tubing by 8" long to an associatedactuator. SWE's judge cantilevermounting as rigid and seismically qualified. The tubing connected to solenoid valve is supportingout the other end.
: 3. Is the anchorage free of corrosion that is more than mild surface                YE] NEI    U-I N/A0 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?        YO] NEI    UO- N/AO
: 5. Is the anchorage configuration consistent with plant documentation?              YE- NE] U-] N/AO (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of               YM NEI UE-potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY           INFOR.ATION             WITHHO.... PROM PU..liC D....
9       L....
Sheet 2 of 5 Status: YM N[-- UFr Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-33343                    Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 11 CLG WTR STRNR BCKWSH SV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YIN NEI UD3 N/AE]
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NDl UI- N/AD-and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YZI NDI UD N/AD3 Good loop on flex conduit.
: 10. Based on the above seismic interaction evaluations, is equipment free     YZ N[l UD-'
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      Y0 NDI UD-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lorv                                                      Date:      41--!      - /
I-ilhan {rhorinnallia    C&#xfd;Al-   Ik.- -            '  A                      VC    -Va -\-Z-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR

PROPRIBTARY             RiFeRMAT-19N              PRPRETRYINORATON wiT-fiOLD3 F-Rem PuD~iC B-i~c-ELOuRE-Sheet 1 of 3 Status: YZ NE-] U-Seismic Walkdown Checklist (SWC)
Equipment ID No, SV-33694                         Equip. Class1 (00) Other Equipment Description         1I SFGDS SCRNHSE ROOF EXHT FAN CD-34137 SV Location: Bldg. SSCN                Floor Ei.        . __Room, Area SOUTH Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checldist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YE NZ of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?            YE NEI UE N/AN 3, Is the anchorage free of corrosion that is more than mild surface            YEI NEI UE1 N/AE oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YEI NEI UE] N/AM
: 5. Is the anchorage configuration consistent with plant documentation?           YE NEI UE N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            Y* NEI U-potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

Lt-  'tLLIJXU 41 + A              KILUUJK              Yttt  tt= 3   r i"t    4ft5r+/-t.   &#xfd; Sheet 2 of 3 Status: YZ NEI U"-
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-33694                    Equip. Class' (00) Other Equipment Description 1I SFGQS SCRNHSE ROOF EXHT FAN CD-34137 SV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YZ NEI U[- N/AC
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NCI U-' N/AC]
and masonry block walls not likely to collapse onto the equipment?
All conduits and lighting are well supported.
: 9. Do attached lines have adequate flexibility to avoid damage?              YZ NEI UEC N/ACI
: 10. Based on the above seismic interaction evaluations, is equipment free      YZ NEI U--
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YN NCI UM adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter Q/or evic                                                    Date:       /4     /
yo . / -00/'7 Dennis Zercher                      7.-.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SU.NSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

P~flT?FT7'T?~TN=PDlTMPTTCAh               1A;PTTTTTflTX.Th PA&4 ;:1TT.TC
                                                                                       -        CPn~f Sheet 1 of 7 Status: YO NF] U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-37025                          Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 122 CONT RM AIR HNDLR OA SPL Y CD-34145 SV Location: Bldg. AUX                  Floor El.                Room, Area 122 CRM CHLR Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one     YF-Z NH of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?               YZ NEI UE1 N/Arl
: 3. Is the anchorage free of corrosion that is more than mild surface                YEA NEI UI-- N/A--
oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?        YED NEI UI- N/A'-
: 5. Is the anchorage configuration consistent with plant documentation?              Yr- NEI U-I N/A[D (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of               Y[K NE1 UE1 potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY          !NFGq&#xfd;MATFIGN          T"OTTI ErIT'A O"r' FROMO'rI'HrO PU--IC    -B-GICLOURR Sheet 2 of 7 Status: YN NE--] U[
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-37025                      Equip. Class' (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description 122 CONTRMAIR HNDLR OA SPLYCD-34145 SV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YN NEI U[3 N/AD[
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YE NDI UD N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              YN NDI UD1 N/AD
: 10. Based on the above seismic interaction evaluations, is equipment free      YED NO UDI of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       Y[D NDI UD-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle       C  Al. t~AQo                               Date:    to -\o - q--
Bruce Lorv          ZfL&#xfd;         /1-7-1.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSUJRE The remaining pages are withheld from public disclosure.

Lt~UV~+/-+/-1U~ILJu~r".i~r.J      A +/-1-11lUL'    ~11U1I  V~L+/-        L+/-~L'U     UK Sheet 1 of 5 Status: YN NE- U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-37462                           Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description UNIT I TRAIN A CHILL WTR/CLG WTR ISOL SV Location: Bldg. AUX                 Floor El.       &#xfd;        Room, Area 12 CHRG PMP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one YE] NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              YEI] NEI UE- N/AZ 3, Is the anchorage free of corrosion that is more than mild surface              YE"] NEI UI- N/AZ oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      YI- N[-E] UEI NWAS
: 5. Is the anchorage configuration consistent with plant documentation?            YEI] NE] UE] N/AZ (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of              YO NEI U0 potentially adverse seismic conditions?
AEnter the equipment class name from Appendix B: Classes of Equipment.

                                                                              . I., -+
                                                                                                     -1i A--; A . i ; i -
nn a Dl;) 112                                                                      &#xfd;-;  +-) + P-1k                    M -
Sheet 2 of 5 Status: Y[ NEI UF]
Seismic Walkdown Checklist (SWC)
Equipment ID No. SV-37462                    Equip. Class' (08) Motor-tOeratedand Solenoid-OperatedValves Equipment Description UNIT 1 TRAIN A CHILL WTR/CLG WTR ISOL SV Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?          YZ N[O) UI- N/AEI The lighting fixture has closed "S"hooks.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting,     Y0g NO U[-] N/A[J and masonry block walls not likely to collapse onto the equipment?
Block walls are safety related(block wall number 35).
: 9. Do attached lines have adequate flexibility to avoid damage?                  YZI NOI UO N/AEJ
: 10. Based on the above seismic interaction evaluations, is equipment free         YZ NEI UM of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could          YZ Ni3 UEr adversely affect the safety functions of the equipment7 It is mounted on a panel and securedby four 1/4" diameter concrete expansion anchors.
Comments (Additional pages may be added as necessary)
Evaluated by: Wall Diordievic                                                        Date:          /O,.-/a-Kyle Kdiesel p                                                 Date:/A2I-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

PRePRIRTARY             1NFGPa4AT-!eN               POREAY NRDrOWITTh T"OLE3D  PUBLIC "ROM        DISCLOSGURE Sheet 1 of 3 Status: YZ N[l U7-Seismic Walkdown Checklist (SWC)
Equipment ID No. VC-28-2                           Equip. Class, (07) Fluid-OperatedValves Equipment Description 12 CHG PMP DISCH RELIEF Location: Bldg. AUX                 Floor El. 1           _1 Room, Area 12 CHRG PMP Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one   YE- NO of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YEI NEI U-- N/AZ
: 3. Is the anchorage free of corrosion that is more than mild surface             Y-   NEI UD N/AO oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YE NE ULID N/AN
: 5. Is the anchorage configuration consistent with plant documentation?           YE NE ULIE N/AI (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of            YO NEI UEI potentially adverse seismic conditions?
IEnter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY            TNF-GrOTI-       N       WIThhOLTTEDT    R*OM PU"'Trl       DISCLOSURE Sheet 2 of 3 Status: Y0 N[E] U((1 Seismic Walkdown Checklist (SWC)
Equipment ID No.       VC-28-2                Equip, Class' (07) Fluid-OperatedValves Equipment Description 12 CHG PMP DISCH RELIEF Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YZ NO UDI         N/AED]
Operatoris bracedfrom rigid adjacentpump and is ok.
: 8. Are overhead equipment, distribution systems, ceiling tiles and Lighting, YS Nol UEJ N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?               Y9 NED UD1 N/AUI
: 10. Based on the above seismic interaction evaluations, is equipment free      YR NO U-of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could       YZ NDI UD-adversely affect the safety functions of the equipment?
Comments (Additional pages may be added as necessary)
Evaluated by., WallyIjiordlevic                         al4l&#xfd;-                     Date:;/-S-/z..
                &19e  Molsel      Z44A

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!- WITHHOLD FROM PUBLIC DISCLOSURE

PROPRIETARY           INFePO*19TION             WIT-HHeOLD    ROM PLIC        DISCLOSURE Sheet 1 of 13 Status: YE NEI     Ur Seismic Walkdown Checklist (SWC)
Equipment ID No. 035-012                           Equip. Class' (21) Tanks and Heat Exchangers Equipment Description 122 SFP HX Location: Bldg. AUX                  Floor El. 1              Room, Area SFP HX 122 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one  YZ NEI of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?             YE! NEI Ur-I N/AF1
: 3. Is the anchorage free of corrosion that is more than mild surface             YZ NEI UZ-1 N/AF-1 oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?     YN NEI U-I N/AZ
: 5. Is the anchorage configuration consistent with plant documentation?           YN NEI U['I N/A[Z (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
There are four 1" diameter anchorbolts on each leg on a 3.5"by 19" pattern. The drawing referencedis calculation PI-S-044 revision 1.
: 6. Based on the above anchorage evaluations, is the anchorage free of           YED NE UE-potentially adverse seismic conditions?
1 Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIBETARY RiFE)RM.TI..N                   WITHIIIILD FR.m PUD.i. BIZ....S. .
Sheet 2 of 13 Status: YjM N[-] Ull]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 035-012                      Equip. Class, (21) Tanks and Heat Exchangers Equipment Description 122 SFP HX Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?      YEI NEI UI- N/AL!
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YU No ULI N/AL]
and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?              Y10 NE-- UI- N/AZl
: 10. Based on the above seismic interaction evaluations, is equipment free     YED NEI U[-]
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could      YZ NO UE adversely affect the safety functions of the equipment?

PROPRiET*ARYv TiNFGR?1PXT.-iN                   WITTTT1O.TLD   FR'-M P"TLr"TT   DGI-STEO'I f
Sheet 3 of 13 Status: Y[    NEI   U-]
Seismic Walkdown Checklist (SWC)
Equipment ID No. 035-012                          Equip. Class1 (21) Tanks and Heat Exchangers Equipment Description 122 SFP HX Comments (Additional pages may be added as necessary)
: 1. There is a small area with concrete spalling (about 1"by 3" and 1/4" deep). It is not a seismic concern.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the dispositionof this observation.
: 2. There is an abandonedhangerrod in the ceiling (red tape on the tip) above HX It is not a seismic concern, but CAP 01352373 has been initiated to evaluate this observation for potential personalsafety when assemblingscaffolds or performing overhead work. Off of this action request, WR 83651 has been initiatedto address this observation.
: 3. It appears that the valve CC-43-2 has a tie wrap aroundit for a wheel lock.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the dispositionof this observation.
: 4. There is a bolt missing in a base plate next to MCC IGA BUS 1.
WR 83744 has been issued to replace the missing nut. CAP 01352717has been issued to document the discrepancy. The MCC is not safety relatedand the missing nut will not have any effect on operability or functionality of the adjacentMCC. It also does not pose any safety hazard.
Evaluated by: Dileeo Cherlopalle       C.z-. y y '            ,. kP X              Date:   ,*  _   g  -.  .
Bruce M. Lorva                  ..        .                           Date:   ./-of-/'-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRO)PRi- TARYIZ I FORM TION                                   "
WI*THHOLDtE PRO*R      T   "r iRE P'-TrhTTST"*                  I Sheet 1 of 11 Status: YZ ND-] UM Seismic Walkdown Checklist (SWC)
Equipment ID No. 045-102                           Equip. Class' (05)Horizontal Pumps Equipment Description 122 SFP PMP Location: Bldg. AUX                  Floor El.     &#xfd;          Room, Area SFP 2 Manufacturer, Model, Etc. (optional but recommended)
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgments and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one    YE ND of the 50% of SWEL items requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?              YU NDI UD1 N/A[D One of the nuts is flush with the anchor bolt. There are no threads projected beyond the nut. The bolt has the full thread engagement, but no extruding threads. The SWEs judge this as acceptable. It is not a seismic concern.
: 3. Is the anchorage free of corrosion that is more than mild surface              YZ NDI UD1 N/ADl oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?      Y[    NDI UDl N/ADl
: 5. Is the anchorage configuration consistent with plant documentation?            YZ ND UD-] N/AD (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)
Referenced drawingNF-38313-1 for verification. It shows six 3/4" bolts for the pump.
: 6. Based on the above anchorage evaluations, is the anchorage free of             YN NEIUE potentially adverse seismic conditions?
I Enter the equipment class name from Appendix B: Classes of Equipment,

T`)r)f-A1-)r) 7`7&#xfd;MM T11T TATT7/-&#xfd;T11AM M&#xfd; ^AT   T.T&#xfd;MTTTTr-NT T&#xfd; T7"rNAM &#xfd;TTTIT &#xfd;rl T&#xfd; &#xfd; 0 f&#xfd;T ^ t&#xfd;T= T&#xfd; Sheet   2 of 11 Status: YZ NEI UE--
Seismic Walkdown Checklist (SWC)
Equipment I]D No. 045-102                           Equip. Class, (05)Horizontal Pumps Equipment Description 122 SFP PMP Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?              YN NEI UL N/AD
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[              N] U7 N/AD and masonry block walls not likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                      YN NEI U-            N/AD
: 10. Based on the above seismic interaction evaluations, is equipment free             Y[       NEI U]
of potentially adverse seismic interaction effects?
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could               YZ ND Ur-D adversely affect the safety functions of the equipment?
The yoke pins for SF-26-2 and SF-26-4 do not have a retaining mechanism (cotterpin, bolt, etc.).
Site engineering has reviewed this observationand concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
Comments (Additional pages may be added as necessary)
I The cover between the motor and pump is tied with two steel tie wraps. SWEs questioned whether or not this configurationis acceptable for seismic conditions. After evaluation by site engineering, it was concluded that in a seismic event, the lightweightplastic guardwill move with the pump.
Since the guard is made of flexible plastic, the force requiredto break it would be well beyond the force produced by a design basis earthquake. It is not a seismic concern.
: 2. There is boric acid present between the body and cap of the SF pump. This condition was identified previously under CAP 01285680 and evaluated under WR 067821.

                                                                                                     /
PROPRiETARY&#xfd; R4PORrAT-iON                 wiFfffiLD       FROm PUDiC-i   EDisCLesuRH Sheet 3 of 1i Status: YN NEI U[D Seismic Walkdown Checklist (SWC)
Equipment ID No. 045-102                  Equip. Class' (05)HorizontalPumps Equipment Description 122 SFP PMP Evaluated by: Dileep Cherlopalle c . ,). t&#xfd;-? I ec p , , , o,.r R-  i,        Date:    I0-2-*-12--
Bruce Lorv                                                              ( -.01-12.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS' WITHHOLD FROM PUBLIC 1916CLOSURE C Area Walk-By Checklists (AWCs)
This appendix provides the Area Walk-By Checklists (AWC) completed as of November 9, 2012 for PINGP. Table C-1 provides the building, elevation, and location of each area as well as a list of SWEL items associated with each area, and whether or not the checklist was marked as "Y" or "N" (the checklist status).
The AWCs are provided after this table, and are in the same chronological order as listed in the table below.
This table and the following AWCs include information on the location of SWEL components, which is considered Sensitive Unclassified Non-Safeguards Information (SUNSI), of which the loss, issue, modification, or unauthorized access can reasonably be foreseen to harm the safe operation of the nuclear plant. Pages which contain proprietary information have been marked, and the sensitive information has been redacted.
Pages which contain proprietary SUNSI information have been marked.
Table C-1: Prairie Island Unit 1 Completed AWCs Area Walk-By                  Description           Equipment           Comments        Checklist Designation                                      Tag(s)                          Status (Y/N) 1            AUX 11/12 CNTM SPRAY         MV-32077                               Y 145-071 2             AUX 11/12 Sl PUMPS           1LT-920                               Y 1 LT-921 3              AUX 11/21 CC PMP           MV-32145                               N 145-042 4             AUX 12 CHRG PUMP            SV-37462                               Y VC-28-2 C-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report IV 11111 I'JE~LI I UI~.JIVI  I ~1LDE~I~~ UmdbLUdU*L Table C-1: Prairie Island Unit 1 Completed AWCs Area Walk-By          Description                   Equipment                 Comments    Checklist Designation                                       Tag(s)                           Status (Y/N) 5      AUX 12/22 CC PUMP                    145-122                                N 6            AUX NE                       CV-39401                                 Y 1PT-479 7            AUX NE                                                                N MV-32380 8          AUX RELAY                         1ASG1                                 N 9        AUX 11 RWST                       PNL 191                                 N 10           AUX SE                        1PT-469                                 N 11        AUX112BUS                     112M/XFMR                                  N 12        AUX 122 BUS                   122M/XFMR                                  Y 13        AUX A E-MON                       174-162                                N 14        AUX B E-MON                        EM-B1                                 N 1NR3 B-1 15       AUX CNTRL RM                                                              N D-1 E-1 MV-32242 16         AUX DEMIN                                                               N RS-21-1 17          AUX EAST                        1 LT-762                               Y 1 LT-763 MV-32017 C-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSi - wrnv on:L     FROM PUBICe         IL    ,,LOSUl-E Table C-1: Prairie Island Unit 1 Completed AWCs Area Walk-By           Description            Equipment            Comments       Checklist Designation                                Tag(s)                          Status (Y/N)
MV-32133 57304 032-292 045-592 053-382 18     AUX 122 CRM CHILLER                                                 Y 069-242 076-022 MCC 1T2/XFR SW SV-37025 70300 053-321 19       SSCN 12 DD CLWP             135-101 N
145-392 CV-31423 20          SSCN SOUTH                 22024                                Y 158-011 CV-31652 MV-32034 C-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI    WITIIIIOLD FROM PUBLC .is.LO'UR' Table C-1: Prairie Island Unit 1 Completed AWCs Area Walk-By         Description            Equipment           Comments        Checklist Designation                              Tag(s)                          Status (Y/N)
PNL 136/XFMR SV-33343 SV-33694 117-111 145-201 CV-31059 CV-31153 21       TURB11AFWP                                                       N MV-32025 MV-32238 MV-32381 PNL 133/XFMR 12 BATT 22       TURB 12 BATT                                                     Y 12 BATT CHG N
23       TURB EDG D-1                22017 55000 55400 032-011 032-041 034-011 C-4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI   - WITI n1 ILD-FRL M PUBLI          DISCLllOi     RE Table C-1: Prairie Island Unit 1 Completed AWCs Area Walk-By         Description             Equipment             Comments      Checklist Designation                               Tag(s)                          Status (Y/N) 046-031 A 053-201 CV-31505 CV-31953 D1/GEN RLY PNL SA-54-3 SV-33186 SV-33242 24        TURB 11 BATT               11 BATT                               Y N
25        TURB BUS 111            111M/XFMR 174-031 26        TURB BUS 15                                                      N B15 LOGIC-2 27       TURB ROD DRIV                125MR                                Y 28       AUX SFP HX 122              035-012                 SWEL 2        N 29      AUX SFP PUMP 122             045-102                 SWEL 2        N C-5

L.       a.*Jr  -*.-i*a U.                     J        Va*.-L-iuJ>,
                                                          ,&#xfd; - .L           J.. .,..f3 .O    tLtLL.            UL+/-*.L.
b-LLL'.
Sheet 1 of 5 Status: YZ NEI U[:]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.
* Room, Area' 11,/12 CNTM SPRAY Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items, The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         Y[9 NO UC- N/ACI potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant              Y[    NC U"       N/AC degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                     YZ NEI UC' N/AC raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
The abandonedhangernearsandbag block out on west wall is evaluated. There is no seismic concern, 4, Does it appear that the area is free of potentially adverse seismic spatial           YOj NCI UC N/AC interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
The light fixture is disconnected on one side from its supportand is laying on temporary scaffolding. The scaffold prevents the light fixture from falling on the 11 containmentspray pump. There is no seismic concern with this light fixture.
Various maintenance activities were occurringduring the performance of the area walkby.
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

PROPE" T'Ar'"V         TORT7 rW"ITTTLD                          FRO-
                                                                      -is"LU*""RE m PUBLi*
Sheet 2 of 5 Status: YE NE uE Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El. &#xfd;              Room, Area, 11/12 CNTM SPRAY
: 5. Does it appear that the area is free of potentially adverse seismic        YO NfJ UO NIAD interactions that could cause flooding or spray in the area?
No fire protection piping was observed in the area.
: 6. Does it appear that the area is free of potentially adverse seismic        Y[O NEI ULI N/AD interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic        Y0 NE UEJ N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
Various maintenance activities were occurringwhen performing the area walkby. No seismic issues were identified
: 8. Have you looked for and found no other seismic conditions that could       YI  NDI   UE1 adversely affect the safety functions of the equipment in the area?
The unrestrainedchain falls are not a seismic concern, but the SWEs noted that it would be good housekeeping to keep the chain falls tied off. No action is required.
Comments (Additional pages may be added as necessary)
The drip pan beneath the 12 containment spraypump is missing a bolt on the south side.
CAP 01353388 has been initiated to evaluate this observation. In addition to writing an action request, WR 83885 has been initiated to address this observation.
There is an abandonedpipe hangernear the north wall, but it is not a seismic concern.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report VOLkkg1. 61-rIILILJfI r% &#xfd;Df'hKB flU 1ID I^ rMlefll ^011C20DI
                -  i 7 7 F; F                                       i.7 =1 The remaining pages are withheld from public disclosure.

k'fUtLI'f.J.j Iti'kJ +/- Lf* Uiltt v ''i" f!4      WITHHOLDj        ReM FUBnEe    L         ISCLO SURE          '
Sheet 1 of 14 Status: YN NF] U-Area Walk-By Checklist (AWC)
Location: Bldg. AUX                  Floor El.
* Room, Area' 11/12 SI PUMPS Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                        YE NEI UEL N/AEL potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
The pressure gauge (18351) wall bracket next to electric panel JB A 1813 in 12 Sl pump room is missing one out of four bolts. The bolt appearsto be sheared off The SWEs judge that the remaining three bolts possess sufficient seismic capacity to hold the gauge in place during a design basis seismic event..
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 2. Does anchorage of equipment in the area appear to be free of significant             YE NE- Ur- N/AL degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YE NEI      UL N/AL raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial           YOJ NEI U[-- N/All interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
: 5. Does it appear that the area is free of potentially adverse seismic                  YED NEI     UL- N/AL interactions that could cause flooding or spray in the area?
I If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

rPRaPRIETARY WNFEyRCcTlIt(N                                  _.:  '. .. . '..". . .. . ; . .,M W
Sheet 2 of 14 Status: YO NnI- U[]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.      &#xfd;           Room, Area1 11/12 SI PUMPS
: 6. Does it appear that the area is free of potentially adverse seismic               YO NEI US- N/AD interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic               YZ NM UE- N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 1. The valve turn nut, which is not part of the present equipment, was found behind 1160 Barton pressuregauge wall bracket. Plant personnel removed this foreign material.
: 2. An oil can was found supportedfrom unistrut. SWEs judged this configurationas acceptable.
: 8. Have you looked for and found no other seismic conditions that could                ZNEI US]
adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
: 1. There were 3 plastic barrelstied with a rope to a 6" SS pipe next to 1 1RWST. It needs to be verified that this is acceptable to tie them to this pipe.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 2. A flow meter is chained to a 4" line in the ceiling approximately 15' above the 12 safety injection pump at the divider wall next to valve SI-20-69. The seismic loads for this piping are evaluated, and this configurationis seismically acceptable.
Evaluated by: Bruce Lory              Z    .     .. h                                    Date:     //-OI-I-Dileep Cherlopalle           v. k"     ,-,                           Date:     Io - .1-Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI W-ITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

T p~PIRl    IETAD'     TfllYTfI                  WTTTTTT*TfEhB     Fl'PM    DThTTrThrrTnrTrf Sheet 1 of 15 Status: Y[-] No       UE-]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.
* Room, Area1 11/21 CC PUMP Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YE NEI UD] N/A' potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
It appears that CS-19543 is not anchored to the wall. There are four external holes in the bracket for fasteners but no fasteners are present.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 2. Does anchorage of equipment in the area appear to be free of significant             YE NEI UD- N/AD1 degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YN NDl UD- N/AD--
raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YN NiD UD- N/AD1 interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
1If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

PROPRIETARY         INFORA-*TIOU            WITHHOLD FROM PUBLIC DISCLOSeURE Sheet 2 of 15 Status: Yo NZ U[--
Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.   &#xfd;         _ Room, Area' 11/21 CC PUMP
: 5. Does it appear that the area is free of potentially adverse seismic        Y[   NIj UEZ N/AEl interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic        YM NEI UI-] N/Al]
interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic        Y-I NZ U-- N/AL]
interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
Two drums are present under the component cooling heat exchanger to collect leak off. The drums are poorly tied off by rope to a small copper drain line for the 11 component cooling pump unit cooler.
CAP 01353280 has been initiatedto evaluate this observation. In addition to writing the action request, WR 83853 has been initiatedto addressthe observation.
: 8. Have you looked for and found no other seismic conditions that could      Y'] NZ UEI adversely affect the safety functions of the equipment in the area?
One of the two floor brackets for the unistrut that supports the component cooling motor power cables appears to be bent and the anchoris loose. There is a tygon tube wedged under the corner.
CAP 1353327 has been initiatedto evaluate this observation. In addition to writing the action request, WR 83865 has been initiatedto address the observation.
Comments (Additional pages may be added as necessary)

R.PRi.ETARY
        ..                iN.RT..      iEO..       ..
WIT-HhOL    PROM       L. C  DISCLOSURE Sheet 3 of 15 Status: YE] NZ U--i Area Walk-By Checklist (AWC)
Location: Bldg. AUX          Floor El.
* Room, Area' 11/21 CC PUMP Evaluated by: Bruce Lorv                 of,
                                         /4?                           Date:      /-/,      /2-Dileep Cherlopalle                                                       2-Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI- WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

2 PRE)FRIETARkz           !NFGR&#xfd;&#xfd;EPIE)N PROPRIETARY         INPOR~TION WTTTTTT"Tfl       PP~M        ~TTThT T       ThT'~'T.fl*'.TTTfl Sheet 1 of 4 Status: Y[1 N[_1 UM Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.
* Room, Area1 12 CHRG PUMP Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                        YZ NEI Ur- N/AD' potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YZ1 NEI U[] N/A[-
degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    Y[      NEI UD N/An raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e,g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
Block wall number 19 is safety related and is not a seismic concern, The lighting fixtures in the area have open "S"hooks but these are not deemed a seismic hazard, CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been identified during these walkdowns, In addition to this action request, WR 83556 has been initiated to address these observations,
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YER ND: UL N/AD interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
5, Does it appear that the area is free of potentially adverse seismic                  Y[9 NEI UI N/AE" interactions that could cause flooding or spray in the area?
No fire protectionpiping is observed.
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described, This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWE.L item.

TRORITA TEORMftTN          WITHHOLB P3ROM PPUDLIC DISeLODURR Sheet 2 of 4 Status: YM N[] Uf Area Walk-By Checklist (AWC)
Location: Bldg. AUX              Floor El,              Room, Area' 12 CUHRG PUMP
: 6. Does it appear that the area is free of potentially adverse seismic       YE ND UED N/AD interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic       Y  NEI UED N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
Radiationsigns are not anchored,but have a wide base. Also, a wrench was found on a step ladder in the area, Neither of these items are a seismic concern, a9 they areaway from equipment.
Additionally, the chiller in the area has missing bolts on the shroud.
WR 84671 has been initiatedto address this observation on the chiller.
: 8. Have you looked for and found no other seismic conditions that could      YM NDI U[3 adversely affect the safety functions of the equipment in the area?
There are some abandoned wall supports but they arenot a seismic concern.
Comments (Additional pages may be added as necessaiy)

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

PROPRIETARY !NFORMATION                       WIT-1HE)LD FROM PU4ELIC DISCLO3GURE Sheet I of 6 Status: Y-- NK U[-
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                 Floor El.    &#xfd;          Room, Area' 12/22 CC PUMP Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YO NEI U-- N/AD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YE NDI U[1 N/AD degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YO ND UD N/ADl raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YO NO UD N/AD-interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
The 22 component cooling pump motor unit cooler is supportedby rod hangers from the ceiling. This is located nearthe 22 component cooling pump, six feet above the 695' floor. This unit cooleris close to the rigging I-beam on the one side and the 4" component cooling line on the other side. Seismic movement may cause the unit cooler to bump into the I-Beam and the component cooling line. The drain line from the 0unit cooler may break as well.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 5. Does it appear that the area is free of potentially adverse seismic                  YO ND UD N/ADl interactions that could cause flooding or spray in the area?
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

PROPRIETAR T*           NFORMATION             WTFImTTTeOL    FROM    PUBTICST    DISCLTOSURE'lJ Sheet 2 of 6 Status: YE] NN UM Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.        &#xfd;      Room, Area 1 12/22 CC PUMP
: 6. Does it appear that the area is free of potentially adverse seismic          YE    NEI   U[W N/AZ interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic          YO N[l UF- N/AZ interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
A ladder is stored underneath the 22 component cooling heat exchanger in an unapprovedstorage location. It is not a seismic interactionissue, but may be a housekeeping concern. The ladderhas a note which states "Stagedfor Ops to access mez. deck, do not remove."
: 8. Have you looked for and found no other seismic conditions that could         YZ NWI Ur-W adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
A top cover plate wingnut is missing from the 2RE-39 radiationmonitor. There is also a loose screw on the side door cover. The monitor is resting on the floor near the wall, and is located between the 22 component cooling pump and the stairs to the upper level.
Site engineering evaluated this observation and concluded that the radiationmonitor is not safety related. WR 83571 was initiatedto replace the wingnut and tighten the loose screw. CAP 01352076 was initiatedto document the observation.
Evaluated by: Bruce M. Lorv                    .                                    Date:      1) [1-Dileep Cherlopalle      ,- .,;.   -X\eo,.,...t*-e_      \,,          Date:      I  - 2J9 - 12,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS1 - WITHHO'lC3D IDISCLOSUE FROM PUBLIC The remaining pages are withheld from public disclosure.

WITIRTGOTD        FROM      PUBLICCTILTEI"                      J Sheet 1 of 7 Status: YZ N[--       U[--]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.      &#xfd;         Room, Areal NORTH EAST Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                        YO NEI UEW N/AEl potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant             YN N-] UI- N/A-degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YE] N-] UE] N/AM raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial YI             NE] UE] N/AZ]
interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
: 1. The auxiliary building special vent zone boundaryline hanger rod is in contact with component cooling line at hanger location 1-CCH-185.
The hangerrod can flex during a seismic event, so there are no seismic concerns.
: 2. The light fixture above the "VFD" cabinets for 11 and 13 charging pumps is close (roughly 1"gap) to the conduits running into the top of the VFDs.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

L*R'*,Ol-ETARY        INFOQRP4TIIO]N rr!T/!1ETII                i'it(      1ii t'Hib2   IE)!SeLbIL;U1ti Sheet 2 of 7 Status: YZ NF U-Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.
* Room, Area' NORTH EAST
: 5. Does it appear that the area is free of potentially adverse seismic          YN NEI UE- N/AEl interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic          YF NEI UE! N/AEl interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic          YO NEI UE1 N/AE1 interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 1. Duct tape needs to be removed from the special vent zone line discussedin question 4.
The foreign material on the special vent line is a housekeeping issue and has no impact on the equipment. CAP 1352391 was initiatedto document this observation.
: 2. There are two abandoned hangerrods above the component cooling line with hanger rod 1-RHRH-385 near MCC1K BUS 2.
Site engineering evaluated the two abandoned hangers rods and concluded there were no seismic concerns. However, CAP 01352549 and WR 83712 were initiatedto remove the hangerrods for personnel safety reasonsduring scaffold constructionor overhead work.
: 8. Have you looked for and found no other seismic conditions that could         YE NEI UE-adversely affect the safety functions of the equipment in the area?
An RP monitor table is next to the wall with its wheels locked. It is not close to any safety relatedequipment and is thus acceptable. No action is required.
Comments (Additional pages may be added as necessary)

R'O   TIEITAR    T'INFORMATIT   WITHH"LDT      FRO"E' rIC T     ITTTTT Sheet 3 of 7 Status: YZ Nn U0--
Area Walk-By Checklist (AWC)
Location: Bldg. AUX          Floor El.        Room, Area' NORTH EAST Evaluated by: Dilepo Cherlopalle   c o ,                             Date:     lo 6- 12-.
Bruce Loy                                                           't*
                                                                                   . 23-/..

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

P17)PPET'.1Y W-ITIHIGOLTFCRM7.TT)N FROM4 PUBLICG DIGGCLSURE                         f Sheet 1 of 2 Status: YE] NE         u[-]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.
* Room, Area' NORTH EAST Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                       YEI NEI UEI N/AEI potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant            YN NEI UE N/AE' degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                   YO NE UE- N/A[
raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          Y1 NEI UE- N/AE((
interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
I If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

T* T'* f'*, 1"*T* "l" T71rT1 "/*tT-I *,T "i- *.'r 1"71 t'* T') 1*/r"Pt rT1 "i- F* "]k'r T.T&#xfd;MTTTT&#xfd;T&#xfd;     &#xfd;Wfi  &#xfd;T&#xfd;T&#xfd;&#xfd;   &#xfd;&#xfd;t&#xfd;&#xfd;Tt'&#xfd;C&#xfd;TTTIT&#xfd; Sheet 2 of 2 Status: Y[-] NM U[]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                                         Floor El.                            Room, Area1 NORTH EAST
: 5. Does it appear that the area is free of potentially adverse seismic                                            YO NEI UE1 N/A[I interactions that could cause flooding or spray in the area?
SWEs noted a welded fire protection line (4") in contact with an HVAC duct, above the high temperaturealarm panel 1, SWEs judge that this contact is acceptablesince the interaction is ductile and the HVAC duct is rod hung.
: 6. Does it appear that the area is free of potentially adverse seismic                                            YN NO U[I N/AEl interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic                                            YE] NZ U-] N/AI-]
interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
There were scaffold carts within 2" of touching the MCC 1L, Bus 2. The cart wheels are chocked but in the wrong orientation. The cart configurationallowed the cart to slide into the MCC. The condition was fixed upon discovery. Site personnel chocked the wheels in the acceptable orientation.
CAP 1355467 has been initiated to document this condition.
: 8. Have you looked for and found no other seismic conditions that could                                          .YOj NE] ULI adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce M. Lory                                              *                      ,                      Date:              2-,   -
Dennis Zercher                       (ji                                  j.    -            Date:         1/-  .. 2*,/-

Sheet 1 of 6 Status: Y- N" U-Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.
* Room, Area, RELAY Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YO NE UD N/AD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
Terminal Box A-1749 (terminal box for high flux) is missing an anchor bolt to wall at the lower right corner. Other three bolts are in place, therefore SWEs judged that the terminal box is seismically anchored to the wall and is acceptable.
WR 83891 has been initiatedto address the missing anchorbolt.
: 2. Does anchorage of equipment in the area appear to be free of significant             YZ ND UD N/AD1 degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YN ND1 UED N/AD-raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YED N[D UD N/AD interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

PROPRIETARY INFeRivnT ION                     WITffiOLDB FROM PU'BLE3I e BIZCl3ZE)S Sheet 2 of 6 Status: Y-] NZ U-]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.
* Room, Area1 RELAY
: 5. Does it appear that the area is free of potentially adverse seismic         YE NO Ur- N/AU interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic         Y[O NEI UO N/AUl interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic         YN NEI Ur- N/AU interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could        YM NEI UI-adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
SWEs identified the following foreign materials during their walkby:
: 1. Foreign materialfound in the upper right unistrut of terminal box A- 1749.
: 2. Cigarette butt found (see attachedphotos).
Plantpersonnelremoved the above foreign materialafter it was identified.
Evaluated by: Bruce M. Lory          /,A      ,                                    Date:   /()-O  -                Dileep Cherlopalle         .V'. .1-                                           t

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WITHHOLD FROM PB   II IC DISCLOSU The remaining pages are withheld from public disclosure.

PROPRIETFARY EENFEORr.1FIN                          WIhODFRem PuLie DISeLOsuRRE-Sheet I of 9 Status: YOI NE. UCI Area Walk-By Checklist (AWC)
Location: Bldg. AUX               Floor El.
* Room, Area, 11 RWST Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                        Y0R N[-- UE       NIAE]
potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant            YO* NEI UDt NIAD]
degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                   YED NZ Urn N/A[
raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (eg., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
There is an abandonedlight fixture behind the MCG/J Bus with open "S4hooks.
CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has been initiatedto address these observations.
: 4. Does it appear that the area is free of potentially adverse seismic spatial         YI N3 Urn N/AD interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
: 1. There are open "S"hooks on a light fixture above the PT-948 panel.
: 2. There is also a disconnected light fixture chain near panel 191.
CAP 1352001 has been initiatedto evaluate the open "S' hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
'If the room in which the SWEL item is located isvery large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

PR..PRIET-ARY IN                R..TION
                                         --             WIT.... OLD..FR. M PLIC              DICLO..SURE Sheet 2 of 9 Status: Y[I NZ    U[]
Area Walk-By Checklist (AWC)
Location: Bldg. AU../X            Floor El,
* Room, Areal 1 RWST
: 5. Does it appear that the area is free of potentially adverse seismic           Y9 NEI U(] N/ACI interactions that could cause flooding or spray in the area?
The fire protection piping is a deluge system, so the line is dry. It is not a seismic issue.
: 6. Does it appear that the area is free of potentially adverse seismic            YN NEI UEI N/A-interactions that could cause a fire in the area?
Flammable cabinetis unanchored but It will not tip over, so it is not a seismic concern.
: 7. Does it appear that the area is free of potentially adverse seismic            Y[1 NO UE1 N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
Dolleys are stored too cfose (012) to 11 -H2recombination cabinet. The housekeepingprocedure requiresa 12" offset. The condition was fixed on the spot to achieve a 12" spacing.
: 8. Have you looked for and found no other seismic conditions that could           YZ NO UEI adversely affect the safety functions of the equipment in the area?
A tool cart was too close to the tubing raceway entering containment penetrations. The condition was fixed on the spot.
Comments (Additional pages may be added as necessary)
A crash cart was nearsample lines, but it was not deemed a seismic hazardsince the sample lines are not safety related.
Evaluated by: Walter QDodeIL                                                          Date:     /ft          2OI, Mye KrIesel          e/                                               Date:   /0 TO,
: 0. &#xfd;0-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRiETARY            IENFE)RMATEEeli            WS-LT..YI.LAT JITHHLD-L N FR. M PUB.LCL -              IOC3.-L    URB Sheet 1 of 7 Status: Y-- NZ Ur-Area Walk-By Checklist (AWC)
Location: Bldg. AUX                Floor El.
* Room, Area' SOUTH EAST Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YEI NZ U-D N/A[!
potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
An anchorbolt is missing on pipe supportnumber 1-CCH-31 1.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 2. Does anchorage of equipment in the area appear to be free of significant              YZ NEI UD N/AEl degraded conditions?
An anchor is missing on a stanchion beneath the 121 Loop "A,"          Main Steam isolation valve drain line.
CAP 1353371 has been initiatedto evaluate this observation.
Additonally, WR 83874 has been initiatedto address this observation.
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YZ NEI UE N/Al raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YE NO UE] N/AEl interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
There is an abandonedlight fixture in the overheadnearpipe support 1-CCH-311. It is unattachedand should be removed.
CAP 1353409 has been initiatedto evaluate this observation.
Additonally, WR 83892 has been initiatedto address this observation.
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

                                                      ~ITIIIIQLD           PROM PUDLIC DIOCLOSURE ThD(\fltTPT7~T?'.Y TT~TflflTM"TTCT?'J Sheet 2 of 7 Status: Y[] NZ UM Area Walk-By Checklist (AWC)
Location: Bldg. AUX              Floor El.&#xfd;              Room, Area' SOUTH EAST
: 5. Does it appear that the area is free of potentially adverse seismic                 YN ND U[j N/AD interactions that could cause flooding or spray in the area?
No fire protection piping was observed.
: 6. Does it appear that the area is free of potentially adverse seismic                 Y0Z NEI UFD N/AC interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic                 YN NO UD N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could                 YZ Nn UE adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Wall Iordjovic                                                                Date:      ' ['IL" K(e Kriesel                                                                  Date: .2,      212.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report S'JNS. -WITHHOLD FROM PUBLIC DISCLOSURE

PRePRIlETARY       ChckisRt(AWC Sheet I of 3 Status: Yf] NZ U[I]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX               Floor El.
* Room, Area, 112 SOS Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The
--spacebeloweach-of the following questionsmay be used to record the results 0fjudgmentsand findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                       YE    NC UC N/A" potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant Y03 NO u-I N/AC degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                   YO NO UC N/ACF raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial         YO NO UL- N/AC interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
There are open "S"hooks on light fixtures, The light fixtures could be a hazard to Bus 112, but not the transformer.
CAP 1352001 has been initiatedto evaluate the open 'S" hooks on light fixtures which have been Identified during these walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
If the room inwhich the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL Item.

PROpRiETARY IITPORMAT4G?                         wiT-iiOLD3      FRem EPUDLiCe BIDCLOZURE Sheet 2 of 3 Status: Y-] NZ Ufl Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.                Room, Area' 112 BUS
: 5. Does it appear that the area is free of potentially adverse seismic      YO NEI U[D N/AE' interactions that could cause flooding or spray in the area?
The supply end return line piping is ductile and will not pose a spray down or flooding hazardin room.
: 6. Does it appear that the area is fi'ee of potentially adverse seismic      YO NEI Ur           N/AC" interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic       Y0 NEI UQ- N(AO interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could      YN NCi UC" adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Wally Dordievic                                                    Date:  ____7_________"
Kyle Krlesel                                                             ____________,__

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS'  WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PRGPRIETARY           !?4FGRMAT!E)N           WIThhO1ELD          RFGM PUPLIC DISCLOS(URE Sheet 1 of 2 Status: Y[] N[-       U--
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                  Floor El.    &#xfd;          Room, Area1 122 BUS Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                        YZ NEI U-- N/AD1 potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
The unit cooler in the 122 BUS room has a brace that is attached to the wall with four base plates. One of the plates seems to be bent and there is a 1/4" gap between the plate and the wall.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 2. Does anchorage of equipment in the area appear to be freeof significant              YO NEI     UD- N/AD-degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YZ NE      UD- N/AD-raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial           YZ NEI     U-- N/AD' interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
' If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

Are JI     C       I    (AWC)                W-ITfffOLf3    FREOM FUDLICe BDISeLOSURF-Sheet 2 of 2 Status: YN N[-] U]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX              Floor El.
* Room, Areal 122 BUS
: 5. Does it appear that the area is free of potentially adverse seismic      YZ NEI UE-W N/AF-interactions that could cause flooding or spray in the area?
The unit cooler supply and return lines (hangernumber 1-RHRH-656) are unsupported laterally across the entire room. If the line breaks during a seismic event, there are no floor drains in the room and flooding may occur.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
: 6. Does it appear that the area is free of potentially adverse seismic      YlI NWI UW-N/AD-interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic      YO NEI UD N/AD-interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
A pig tail of a cable was noticed in the ceiling next to the unistrut support. It is not a seismic concern.
: 8. Have you looked for and found no other seismic conditions that could     YZ NEI Ur-adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle           v-!    lp'Yx ,,o-,j-Q                Date:     11-q                Bruce Lory                                                       Date:  __-________-

PROPRIETARY            INFORM-ATION               WITIIIIOLD         FROM PU-BLIC DISCLOSURE                          /
Sheet I of 5 Status: YEI] NZ U7 Area Walk-Sy Checklist (AWC)
Location: Bldg. AUX               Floor El.    &#xfd;           Roomn, Area1 A E-MON Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results ofj udgments and findings.
Additional space is provided at the end of this cheoldist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                       YO NZ U-          N/AD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
Behind the cabinet RMU2N, one wing nut holding the emergency battery EL-28 is missing.
EL-28 is a non-safety relatedlight, It is located in the train A event monitoring room. The event monitoringequipment located in this room is within cabinets and would not be Impacted should the light fall during a seismic event. WR 83724 was initiated to replace the missing nut.
: 2. Does anchorage of equipment in the area appear to be free of significant Y2 ND U'I N/A]
degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                   YC9 NEI UD N/AD raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial         Y2 NEI Url N/AD3 interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
IIf the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

PROPRIETARY
          'NFOR*-AT-IOU7                              WITHHOTL        FROM  *1CTP    T, LI*"          GEGI"TC ErI Sheet 2 of 5 Status: YEI No UPI Area Walk-By Checklist (AWC)
Location: Bldg. AUX              Floor El.              Room, Areal A E-MON
: 5. Does it appear that the area is free of potentially adverse seismic         Y0E NCi UF N/Al]
interactions that could cause flooding or spray in the area?
rho waterpiping is seismically braced.
: 6. Does it appear that the area is free of potentially adverse seismic          YZ NEI UI- N/AED interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse soismic          YO NEI U-- N/All interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could        YIZ NV1 Ut]
adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Walter LodvIc                                                        Date:,
Bruce Ml. Log                                                                /02      /23

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRE)PRIET4kRY        !NFE)RMAT-18N            OWITTTHOLD1       TROM      PUBLITC-      DIGC-CURE Sheet 1 of 20 Status: Y-1 NM        u-]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX               Floor El.
* Room, Area' B E-MON Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YN NEI UM N/AEl potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant             YE NEI UE1 N/A-1 degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YZ NEI UED N/AZ1 raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YN NEI U[_ N/AEl interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
The light fixture hangingfrom the ceiling is about 3" to 6" from an electricalbox that is connected to panel 219. Duringa seismic event the fixture may hit the electricalbox.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

AreWak-   C TARY      NFOiRMATsiON            WITfHLDfE      FROM PUBIC-DIOCLOCUTRE --
Sheet 2 of 20 Status: YI-Z NO UI-Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.
* Room, Area' B E-MON
: 5. Does it appear that the area is free of potentially adverse seismic        Yr- NO UrI N/AEl interactions that could cause flooding or spray in the area?
If the unit cooler supply and return lines break duringa seismic event, it may result in flooding the room. There is no floor drainin the train B event monitoring room. Reference hangers2-RHRH-453, 2-RHRH-448, 2-RHRH-449, and 2-RHRH-454.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the dispositionof this observation.
: 6. Does it appear that the area is free of potentially adverse seismic        YO NEI UrI N/AII interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic        YZ NEI U-1 N/Ar"I interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could       YZ NEI ULI adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle       C "-i- n oi ,K,-.      'V-eAA_,            Date:     /0-30  -   2.
Bruce M. Lory         X                    "-4                     Date:  J-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR

LRWtUL6tULI+/-L!LtU                                        ?UTI4L             tr-IL~t"2LU                          ,!;11-40.
L+/-ZtJJZUI&#xb6;&
Sheet I of 10 status- YDI NN U{
Area Walk-By Checklist (AWC)
Location! Bldg, AUX                Floor 1l.               Room, Ante CNTRL RM4 bistructions for Completing Checklist This checklist may be used to document the results of the Area WalkBy near one or more SWilL items. The spaoe below each of the following questions may be itjee to record the results ofjudgments and findings.
Additional space is provided at the end of tis oheoklist for documenting other oommcnts.
1, Does anchorage of equipment in the area appear to be free of                     YN NEI UF' N/A"]
potentially adverse seismio conditions (if visible without necessarily opcning'cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YO9 NEI DO N/AL]
degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/condult                 YO NEI 110 N/AU raocways and HVAC duoting appear to be free of potentially adverse seismio conditions (e.g., condition of supports is adequate and fill conditiong of cublo trays appear to be inside acoeptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial        YO NO 0E] N/AU interactions with other equipment in the area (e.g., oeiling tiles and lighting)?
There ire Ilghting diffusers tled off to the support grid, Unit I and Unit 2
               "" panels have a fluorescent light (fiture on chains too close (within I"-
2') to the panel, CAP 01352209 has been Initiated to evaluate this obserialion.
: 5. Does it appear that the area Is free of potentially adverse seismic                 YO N[I UF N/AU interaotions that could ouse flooding or spray in the area?
l
: 6. Does it appear that the area Is free of potentially adverm seismic                 YCD NO UO N/A-]
interactions that could cause a fire in the area?
     'If the roomIn which the SWEIJ Item Ialocated is veryla'ge (e.g., Turbine Hall), the area selected ahonldha described.
Ths selected area should be based on judgment, e.g., oc the order of about 36 fcet from the SWEL item.

PRPITARY              !NPORmATiei                  WIETHHOLD FREW P~gLiC                9!GGCLOST4R Sheet 2 of 10 Status: YaI No Uhs Area Walk-13y Checklist (AWC)
Location: Bldg. AUXL..         Floor El                Roomii ATea,  9NIBRLBRM
: 7. Does it appear that the area Is fitee of potentially adverse Reismic      YO NO Ufl N/ACI interactions assooiated with housekeeping practices, storge of portable equipient, and temporary installations (cg,, soaffolding, Load shielding)?
: 1. The trash can next-to the racks R23, R24, R13, and R14 are Immediately adjacent to the-racks, which violates the seismic ho usekeepIng procedudre.
Site engineering has reviewed this observation and concluded there Is no sel*snmi concern. Pleaserefer to the table containedIn Appendix F for the disposition of this observation.
: 2. Step ladderadjaeantto racks R23, R24, R13 and FR14 is also Ice close to the racks. The wheels shouldbe chocked.
WR 63584 has been InitUated to address this observaton,
: 3. There were several open S-hooks on light fixtures (nearestthe panel In most cases).
CAP 01352001 was initiated to evaluate this observation.Off of CAP 01352001, WR 83556 wee Initiatedto address thIs observation.
S. Hive yiu looked for and found no othor seismic conditions that could       YO N ilUE]
adversely affect the safety finctions of the equipment in the area?
Unit I and Unit Z 'r panel, have side panels that have slid out of position. This (ea housekeeping issue end not a seismic concern.
CAP 0"1SB2102 has been initiated to evaluate this observation. In addition to writIng an action request, WR 83579 has been Initiated to address thts obseNation.

*PROPRIETARY              INFOR}-*TION               WITHHOLD           FROM PUBLIC DISCLOSURE Status: YOSheet NN3 ofuJ10 Area Walk-By Checklist (AWC)
Location: Bldg, AUX              Floor El.    &#xfd;        Room1 Area, MNTRLM            .
Com.e.ts (Additional pages may be added as neessary)
Sonme desks are secured to the well. Not a selamir'concern.
1, The filing cabinets adjacent to the main control board In both Unit I and Unt 2 am close to the main contm/ board.
CAP 1357683 has been Initiatedto evphlate this observation.
2, A set of drawers next to the In-core logic selection switch panel are close to the panel.
Site engineeringhas reviewed thi1 observation and concluded there is no selsmol concem; Please refer to the table contalned In Appendix F for the disposition of fhis observation.
: 3. The oart adjacent to the Protection Systems 1// and the cart adjacentto cabinets RPI-1, -2, anq -3 in Unit I are close to the equipment. The chain Is not used to restrainthe carts, CAP 1357686 has been Initiated to evaluate th(s observation..
: 4. Fire extinguisherbacket 224 has a rotatedbracket (Into the Insulation) and should be repaired.
WR 83684 hws been nitlafed to address this observatfon.
Evaluated by! WalterDIordievlo                                                       Date:         4/    4 61L nis eher                                                   .. D0t.                     a

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WITHHOLD FROM PUBLIC DISCLOSUrE The remaining pages are withheld from public disclosure.

       "T'*"r')f* T* "IF'*T "T'*I rI"1 "I* "l')"*7 T "l*T"l-*,'*Vl-*
* A
* l* T f'Yl*1" T.7-rrr1TTTTt-%T 7% 17n /-NTi/r T)TTT) T 'r  f&#xfd; n  7 0 (NT /-%CITTT7) V Sheet I of 7 Status; YO NZ TJE Area Walk-By Checklist (AWO)
Location: Bldg. AUX                                   Floor El.
* Room, Area' DEMIN Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments,
: 1. Does anchorage of equipment in the area appear to be free of                                                      YZ NF1 UC1 N/ACI potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant                                          YO NE U[I NIAE" degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                                                  YN NE UE] N/AD raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial                                        Y[3 NEI UE N/AC interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
: 1. A light fixture has an open "S'hook near FWH-67. The fixture is not nearany equipment, so no action Is needed.
CAP 1352001 has boon initiatodto ovaluato the open "S"hooks on light fixtures which have been identified during these walkdowns, In addition to this action request, WR 86656 has been initiated to address these observations.
: 2. There are light fixtures with open "S' hooks near the loop "A"main steam safety header.
See response above for roll-up CAP written on open "S"hooks.
3, The piping attached to the unit heater(Steam) has sufftient flexibility to accommodate unit heaterdisplacement,so it Is acceptable.
'If the room in which the SWEL Item Is located Is very large (e.g., Turbine Hall), the area selected should be described, This selected area should be based onjudgment, e.g., on the order of about 35 feet from the SWEL item.

P1~lP~ TTT~?VTNflD      ATCM           WTTTfl.hPrM              1T.rn*!.frti Sheet 2 of 7 Status; YEI NN UI-]
Area Walk-By Checklist (AWC)
Location: Bldg, AUX              Floor EI, &#xfd;             Room, Area' DEMIN
: 5. Does it appear that the area is free of potentially adverse seismic        Yj NEI U0~ N/ACI interactions that could cause flooding or spray in the area?
All of the piping Is seismically designed,
: 6. Does it appear that the area is free of potentially adverse seismic        YC NM UE1 N/AEC interactions that could cause a fire in the area?
A wood 10"x20" insert on the floor next to the grating1s a combustible.
CAP 1353367 has been initiated to evaluate this observation.
Additionally, WR 83876 was initiatedto address the observation.
: 7. Does it appear that the area is free of potentially adverse seismic         YO NCIU         N/AA interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
Temporary storage of pipe segment with a wire Is acceptable. It is near the safety valves.
: 8. Have you looked for and found no other seismic conditions that could        YEI NO U adversely affect the safety functions of the equipment in the area?
The cabte trays adjacent to the south wall house cables which are resting on top of, and out of, a tray that is unrestrainedlaterally.
CAP 1353415 has been initiatedto evaluate this observation.
Additionally, WR 83893 was intfiatud to correct this condition.
CQomnents (Additional pages may be added as necessary)
Evaluated by: Walll      ordevic                                                   Dte:
Mye-Krlesel        //~f*b*                   Vr                   Date:      P,'    .0*

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report ISU-NSI1 -WI.1THHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

flflflA     nrrnr   ,-ri   flrflflT   C.CITTnr' Sheet 1 of 10 Status: YZ NM UE-Area Walk-By Checklist (AWC)
Location: Bldg. AUX               Floor El.
* Room, Area, EAST Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YZ NO UE3 N/AC3 potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant              YZ NiC UEJ N/ACI degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                     YZ NO U] N/AO raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
4, Does it appear that the area is free of potentially adverse seismic spatial           YZ NC UC1 N/AC3 interactions with other equipment in the area (e.g,, ceiling tiles and lighting)?
: 1. A Greonlee box is greaterthan 10 feet away from RVLS LT's, so it is not a seismic concern. The wheels are not locked.
2, The chainfallnear 1FT-466 is greaterthan two feet away, and is not considered a seismic concern, but it should be restrainedas a good housekeeping practice.
: 3. The MCC cubicle C4 dooris loose, but a work tag has alreadybeen affixed to spare door. No additionalreview is needed, as it is alreadyin the site process.
: 4. There are open "S"hooks on the lighting in the area above MV-32024. This is not a seismic concern as the lighting will not adversfly effect MV-32024, CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been Identified during these walkdowns. In addition to this action request, WR 83556 has been initiatedto addressthese observations.
If the room in which the SWEL item Is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e~g., on the order of about 35 feet from the SWEL item.

PROPRIET-AR* iNFORMATION                         WITHHOLZD FROM PUBLICI            DGINSCLOSRE Sheet 2 of 10 Status: YO NEIl   UQ Area Walk-By Checklist (AWC)
Location: Bldg. AYX             Floor El1               Room, Arcat EAST
: 5. Does it appear that the area is free of potentially adverse seismic      YIN NEI UDI N/A interactions that could cause flooding or spray in the area?
The fire protect/onpiping near the elevator Is laterally restrained.
: 6. Does it appear that the area is free of potentially adverse seismic       YO NEI UO- N/A-]
interactions that could cause a fire In the area?
: 7. Does it appear that the area is free of potentially adverse seismic       YO NEI UE' N/AO interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (eg., scaffolding, [ead shielding)?
See comments in question 4 above,
: 8. Have you looked for and found no other seismic conditions that could      Y[9 NM Ur17 adversely affect the safety functions of the equipment in the area?
There are two loose X" concrete anchors on the braoket supporting P1-17652, WR 83868 has been initiated to address the observation.
Comments (Additional pages may be added as necessary)
Evaluated by.       ter 0 or                                                     Date.     (     '
VennIs Zercher                                                    Date;:ft~         . 2,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR

Sheet 1 of 8 Status: Y[     N[-- U[]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX              Floor El.
* Room, Area1 122 CRM CHLLR Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results ofjudgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YE    NDI U-I N/ADl potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant             YM NDI UD- N/AD1 degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YO NDI UD- N/AD raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is fi'ee of potentially adverse seismic spatial         Y] NDI      UD-1 N/AD-interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
1If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

                                                                    --   1  -- T -  ----      T --
Sheet 2 of 8 Status: YIn NM U-1 Area Walk-By Checklist (AWC)
Location: Bldg. AUX            Floor El.
* Room, Area' 122 CRM CHLLR
: 5. Does it appear that the area is fi'ee of potentially adverse seismic        YZ NEI UI] N/AL1 interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic         YfN NEI- UD N/AEl interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic         YO NEI U-1 N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could        YN] NEI- U-1 adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Dileep Cherlopalle     c-u.
                                       -V-I            ,,,,p                       Date:           I0 42.
* Bruce Lory                        p                                              /_-_        ../__

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSR WITHHOLD FROM PUBLIC DISCLOSURE

          "r"*'T"** "r"*"* "* 'l* rri "* "r'* '* T "T"'*"T "r"*I"* 'T"'*'* * -A r"T'*
                                                                                   "P .r'*L
                                                                                          * "r r.-MTTTT-rT Th r'r&#xfd;,\?. &#xfd;ThT&#xfd;T~h    ThT CfQ r f~'%TTTIT' M -Vrz./t            L In.. .Ll.t..
TMT             V4 i k~f &W     .
* t****.4                           !'  !
Sheet 1 of 3 Status: Y[-] NfZ U'-
Area Walk-By Checklist (AWC)
Location: Bldg. SSCN                                     Floor El.
* Room, Area' 12 DD CLWP Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                                                       Y1J NO~ UI       M/AD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
The 121 filtered water straineradjacentto the diesel oil day tank skid has corrodedanchors (wet environment). The corrosionis not significantand only requires cleaning and re-coating. The anchorageof the diesel driven cooling waterpump also shows slight corrosion,as it is in a wet environment.
CAP 1352851 was initiated to document this observation, and WR 83771 was initiatedto address the corrosion.
: 2. Does anchorage of equipment in the area appear to be free of significant YEI'                                          NO Ur- N/AtJ degraded conditions?
The pipe supporton the floor adjacent to 121 filtered water straineris also slightly corrodedand in a wet environment.
This observation was addressed in question 1.
: 3. Based on a visual inspection firom the floor, do the cable/conduit                                                  YO NEI UEI N/AEI raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial                                         YO NEI ULI N/AEI interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
IIf the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

        .QPRTET-AR31 TNF*R&#xfd;M*TI"N             rOLD3E       W-]Th"j          FROM4            DIr*,'
PUBTTI'1TURH Sheet 2 of 3 Status: YE] NZ U--
Area Walk-By Checklist (AWC)
Location: Bldg. SSCN             Floor El.
* Room, Area, 12 D0 CLWP
: 5. Does it appear that the area is free of potentially adverse seismic       YN NEI UE] N/AE]
interactions that could cause flooding or spray in the area?
The fire protectionpiping fs on short rods, so the mechanical couplings do not pose a spraydown threat.
: 6. Does it appear that the area is free of potentially adverse seismic      Y[     NEI    UEI N/Al]
interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic       YM NEi        U[] N/AL]
interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could      YZ NEI UE1 adversely affect the safety functions of the equipment in the area?
CommenL (Additional pages may be added as necessary)
Evaluated by: Dennis Zercher                                                     Date:      ho/z 2.
WalterD2ord~evic                                                                /AA L'      'A,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOL'ID FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PR.PRIETA.Y IN.-E.RM.ATIO.N                       WITHH...OLD FROM PUBLIC DISCLOTTRF Sheet 1 of 2 Status: Y[I NR U-]
Area Walk-By Checklist (AWC)
Location: Bldg. SSCN             Floor El,                Room, Area' SOUTH Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                        YO NI] UI] N/AC]
potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YO NI] UE] N/AIM degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YO NI] UIO N/AE]
raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YZ NI] UD1 N/A[-
interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

I    nP~e~iTATPVTRMTfl                            WTTTPTT;;IThF)  T~PflM1  PTuBnT.Tr   BisefT.Cs.&
Sheet 2 of 2 Status: YZ NO- UL-]
Area Walk-By Checklist (AWC)
Location: Bldg. SSCN               Floor El.
* Room, Area1 SOUTH
: 5. Does it appear that the area is free of potentially adverse seismic           Y0 NEI U[3 N/AL]
interactions that could cause flooding or spray in the area?
The fire protectionpiping is on short rods, so the bending moments will be such that it will not fail the mechanicalcouplings.
: 6. Does it appear that the area is free of potentially adverse seismic           YZ NEI U-- N/AL]
interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic            YZ NEI U[] N/AU interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g,, scaffolding, lead shielding)?
The gas bottles are well restrained,
: 8. Have you looked for and found no other seismic conditions that could           YZ NEI UE adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Deanner ZO      evichr                                                  Date:       - aLzrb&#xfd; V7

Sheet 1 of 6 Status: Y7 NED U7 Area Walk-By Checklist (AWC)
Location: Bldg. TURB              Floor El.
* Room, Area' 11 AFWP Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items, The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments,
: 1. Does anchorage of equipment in the area appear to be free of                        YFI NZ UD] N/AD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
There is a missing fastener on the guard for 121 instrument air compressor, CAP 1352975 has been initiated to evaluate this observation.
Additonally, WR 83793 has been initiated to address this observation,
: 2. Does anchorage of equipment in the area appear to be free of significant            YO NDI UD- N/AD degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YO NEI U-         N/AD-raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YZ NDI UD' N/ADl interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
There are open "S"hooks on the lighting fixtures near the 11 turbine driven auxiliaryfeedwater pump. The light fixtures would only swing, and would not impact equipment other than nearby piping or conduits.
It is not a seismic concern.
CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has been initiated to addressthese observations.
LIf the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

rWTrhrrOLD-*
PRPIEAYINOMTI    FRO'MI*I*'*TPUTlIC*
TDlT"T -lO"T CU"frErT~
Sheet 2 of 6 Status: YO NO U0 Area Walk-By Checklist (AWC)
Location: Bldg. TURB             Floor El.
* Room, AreaI I1AFWP
: 5. Does it appear that the area is free of potentially adverse seismic             YZ NO UE1 N/AEI interactions that could cause flooding or spray in the area?
The fire protection headerrecieves lateralsupport from the walls.
There are no seismic issues.
: 6. Does it appear that the area is free of potentially adverse seismic             YO N[3 UEI N/AM interactions that could cause a fire in the area?
The scaffolding is tied off appropriately.
: 7. Does it appear that the area is free of potentially adverse seismic              YOJ NZ UIZI N/A[l interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 1. The scaffolding is tied off appropriately.
: 2. The chainfallnorth of PNL 133 is tied off around the conduit support andis acceptable.
: 3. The chainfall for 2AF01301 can potentially strike MCC 1A BUS 1.
CAP 1352961 has been initiatedto evaluate this observation.
Additonally, WR 83796 has been initiatedto addressthis observation.
: 8. Have you looked for and found no other seismic conditions that could             Y[J NEI UEI adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
: 1. There was a wrench found and removed from behind the wall mounted panel indicator,P111167.
: 2. There was a wrench found and removed from behind the local alarmpanel 70550.
: 3. The cable coil adjacent to 122 aircompressorpanel Is acceptable.
: 4. The abandonedlight fixture chain near MV-32025 is not a seismic issue.
Evaluated by: Walter Dorcdevic                                                          Date; Kyle Kriesel        ,jtG                                                Date:

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 3 Status: YZ N[] U[-]
Area Walk-By Checklist (AWC)
Location: Bldg. TURB              Floor El.                Room, Area, 12 BATT Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YE NEI UEJ N/AEJ potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YO NEI UE' N/AF-degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                     YN NO' UI- N/AF1 raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          Y23 NO UO1 N/AUl interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
'If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

r.T-,MTTTTr\- Th r-T-\T-   &#xfd;ThTT&#xfd;TT  T      C' (&#xfd;T f\CTTrT
       ..- u    " . ..  ,*.
8.t.' . .. - *  ,,. .. .'...- . '.''   -r   '. :1:.'..'      V   '   - -     L  .L Sheet 2 of 3 Status: YZ NFi UEr Area Walk-By Checklist (AWC)
Location: Bldg. TURB                 Floor El.
* Room, Area' 12 BATT
: 5. Does it appear that the area is free of potentially adverse seismic                          YED NEI UDI N/AEl interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic                          YED NEI U-          N/AD interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic                           YO ND UDI N/ADl interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g,, scaffolding, lead shielding)?
The eyewash station is adequately secured to the wall. Water supply on the cart is secured with a bungee cord.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 8. Have you looked for and found no other seismic conditions that could                          YED Nr- Ur adversely affect the safety functions of the equipment in the area?
As a precaution, the SWEs recommend closing the doorpulley "S" hook above door 228.
CAP 1352343 and WR 83645 have been initiatedto addressthis observation.
Comments (Additional pages may be added as necessary)
Evaluated by: Walter*ordevic                                                                        Date:          /0 A    "z/4  -
Dennis Zercher                                  ,                                                            ,

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI -WITHHOLD FROM PUBLIC DISCLOSU1RE

..........................                                 .I......     "         P ROM PL*LIC             DIS.......
Sheet I of 3 Status: YEl] NZ U[]
Area Walk-By Checklist (AWC)
Location: Bldg. TURB                    Floor El.
* Room, Area- EOG D-1 Instructions for Completing Checklist A LlJ0 ,.l.;IIl,.UW L imly UL; UVU LVI UU44.iLL,&ILl k   11POUJL
                                                           *L     U1  II.1 rkU ;l Y Il  . IIQI.J*Y 1UIL UIIU UA I1ULU 0 YT ILL 1"&'
L   1*, LtIv space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                               YE9 NEI UF] NMAE potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YZ NCi U-                             N/AQ-degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                           YR NOl UO N/AQ raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the ariea is free of potentially adverse seismic spatial                 Y0 NO UO N/AEJ interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
There Is a possible open "S"hook on a light fixture above the diesel generatorcontrol panel.
CAP 1352001 has been initiatedto evaluate the open "S"hooks Identified during these walkdowns. In addition to this action request, WR 83556 hasbeen Initiated to address the observation.-
IIf the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

 -PROPRIETARY ..........                  TIO       WTHHOLD..T.T*    FROM,' PUBLIC DISTCLOSURE*( ..
Sheet 2 of 3 Status: YE] NO UE-1 Area Walk-By Checklist (AWC)
Location: Bldg. TURB             Floor El.
* Room, Area% EDO D-I
: 5. Does it appear that the area is free of potentially adverse seismic         Y. NO UE N/AD interactions that could cause flooding or spray in the area?
The fire protection system is a delige system, so ItIs not charged, It Is acceptable.
: 6. Does it appear that the area is free of potentially adverse seismic        YO NO UD N/AD interactions that could cause a fire in the area?
All of the oil reservolrs(fuel) are well securedand anchored.
: 7. Does it appear that the area is free of potentially adverse seismic         YO NEI UD N/AlD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
The scaffoldIng Is.seismically acceptable.
: 8. Have you looked for and found no other seismic conditions that could        Y    .NO U' adversely affect the safety functions of the equipment in the area?
The unit steam heaterplping can accommodate a large(pendulum) displacementof the heateron rods, There Is no seismic concern.
Comments (Additional pages may be-added as necessary)
Evaluated by:   Wtr 0lordlevlo                                                     Date:       '"
Dennis Zercher                                                                //" 7 "' *I"

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS-  WITHHOLD FROM PUBLIC DISCLOSU1RE The remaining pages are withheld from public disclosure.

II''       I FIjI I ii I   I I :1':     :1 Sheet 1 of 11 Status: Y[     NEI Ul]
Area Walk-By Checklist (AWC)
Location: Bldg. TURB                Floor El.
* Room, Area' 11 BATT Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                        Y[K NEI UW1 N/AEl potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YED NEI UE- N/AE-degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YO NWI UW1 N/AEl raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial          YO NWI U[-] N/AW1 interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
' If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

T'* *-* f'*, T'* "r* -i- T*'Ir'r'l *, T*
* T -i- "k't"T*I*, "r%*, * "*, r'r'l -i- f*,*T      r.,mTTT~rfifilf~I fT-fT rfl  fli '   T flCTT&#xfd;f Sheet 2 of 11 Status: Y[Z N[-1 U-]
Area Walk-By Checklist (AWC)
Location: Bldg. TURB                                       Floor El. &#xfd;                             Room, Area' 11 BATT
: 5. Does it appear that the area is free of potentially adverse seismic                                                    YO NEI U-           N/AU-interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic                                                    YZ NEI U[D N/ALI interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic                                                    YIE NEI UD- N/AD1 interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could                                                   YO NEIUE adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
Evaluated by: Bruce Lorv                      g                                                ,         ,                    Date:         11-13-.2.
Dileep Cherlopalle                                 C      -v,        '    ,    ,. _                Date:      \.-*t  -

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WITHHOLD FROM PUJBLIC DISCLOSU.RE The remaining pages are withheld from public disclosure.

nPROPRIETARY    IIMFORATION             WITHHGOLD          FROIF    PFL     I C D ISCCLOGS Sheet 1 of 32 Status: YF] NMJ UM]
Area Walk-By Checklist (AWC)
Location: Bldg. TURB                Floor El.     &#xfd;         Room, Area' BUS 111 Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         YLI NO U[-I N/AL potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 1. There is a gap between the base plate and the wall for the unit cooler. The anchorbolts seem to be tight. Will need to verify if this is acceptable perprocedure.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 2. The back cover bolts are loose for 111 M voltage regulatorcabinet.
WR 83828 has been initiatedto address this observation.
: 3. A conduit box is attached to unistrut,and both screws are loose.
They are locatedapproximately 10' from the floor and above the voltage regulator.
WR 83834 has been initiatedto address this observation.
: 2. Does anchorage of equipment in the area appear to be free of significant YO NEI U[L N/AL degraded conditions?
IIf the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

      -7)&#xfd;        r 1-rlA TI IT &#xfd; &#xfd;1 "f%&#xfd; AfiA M r /VK7                      -T-TI -  - -- -6 1! H Sheet 2 of 32 Status: Y[-] No U-Area Walk-By Checklist (AWC)
Location: Bldg. TURB                   Floor El.         Room, Area' BUS 111
: 3. Based on a visual inspection from the floor, do the cable/conduit             YE] NZ U-I N/AZ raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 1. Vertical rigid conduit to box CS19148 (BUS 111 safeguards SWGR unit cooler)and Panel 132-10 has a conduit clamp not attachedto the conduit. Located on column E9, it has a misplaced loose attachment at about 10' from floor underneathduct.
WR 83829 has been initiated to address this observation.
: 2. The conduit bracketattached to the unistrut for the conduit running to 480V Bus 111 and 112 control panel seems to be loose with a gap between the bracket and the unistrut.
WR 83833 has been initiatedto address this observation.
: 3. One of the two supports for a light fixture is loose from the wall and the upper anchor bolt for the support is not fully engaged. SWEs judged that the light fixture will remain in place, but recommend that the bolt be tightened.
WR 83834 has been initiated to address this observation.
: 4. The conduit support on top of the RMU 213 cabinet, on the west wall, has a bolt that is not fully engaged. The support is located about 10' from floor level.
WR 83836 has been initiated to address this observation.
: 5. An electrical wire is tie wrapped to the conduit above door 54, next to an electricalcable tray.
CAP 1353147 has been initiatedto document this observation.
Additionally, WR 83841 has been initiatedto correctthe condition.
: 6. An electricalconduit is touching the duct work above the 111 Bus. It is located approximately 10' from the floor and above the entry to door 168. This is a flex conduit and the cable is protected. There is no seismic concern.
: 4. Does it appear that the area is free of potentially adverse seismic spatial   YN NE UL- N/AZ interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

IJLJ    VTV=JDJ L.I-~J  TNHnff       M   n                      I'fI'   WOE    M111 Sheet 3 of 32 Status: YE] NZ UD--
Area Walk-By Checklist (AWC)
Location: Bldg. TURB             Floor El.
* Room, Area' BUS 111
: 5. Does it aouear that the area is free of ootentiallv adverse seismic           Y[    NE UE N/AE interactions that could cause flooding or spray in the area?
Unit cooler supply and return lines are Seismic Category I designed.
: 6. Does it appear that the area is free of potentially adverse seismic           YEI NEI UE N/AE1 interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic           YEI NE UEn N/AE interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
A light fixture may come in contact with the flexible conduit feeding into the 11A transformer. It is located on top of 11A transformer with only 2" of clearance.
CAP 1353277 has been initiatedto evaluate this observation.
: 8. Have you looked for and found no other seismic conditions that could          YZ NE UE adversely affect the safety functions of the equipment in the area?
SWEs noted a single light fixture in close proximity to a fluorescent light fixture. These two fixtures will interact underseismic conditions and bulbs may break but the light fixtures will not fall. There are no soft targets in the zone of influence. Therefore, SWEs judge this as an acceptable interaction.
Comments (Additional pages may be added as necessary)
: 1. Duct tape was found on a bracketsupportingsome duct work. It was located about 10' from floor, above the "ladderstoragearea."
: 2. There is a pigtailcable around the conduit with no tie wrap. It was locatedapproximately 15' from the groundbetween 11A andthe transformer.
Evaluated by: Dileep Cherlopalle        C -\.
V -t   Ir        ,    eAK,_               Date:     t0 1 2.-
Bruce M. Lory              *         *s4-
* Date:    /L-O-I'..

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI -WITHHOLD FROM PUB-LIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRO.PRIETARY          INFN*R.L.L    eIi       wiTIHIOLDf3       FROm P~i;,cBE          Bise3esbRE Sheet 1 of 15 Status: Y-- NO U[
Area Walk-By Checklist (AWC)
Location: Bldg. TURB               Floor El.     &#xfd;         Room, Area 1 BUS 15 Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other conmnents.
: 1. Does anchorage of equipment in the area appear to be free of                        YDI NZ UD- N/AD]
potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
The emergency light EL15, located on the safety relatedblock wall number 26 and above the test station for the breaker cabinets, has a missing wingnut on the one side for the threadedrod holding EL 15 on the wall bracket.
CAP 1352966 has been initiated to evaluate this observation.
Additonally, WR 83790 has been initiatedto address this observation.
: 2. Does anchorage of equipment in the area appear to be free of significant             YN NEI UI N/AD degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YZ NDI UD1 N/AED raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
The light fixtures are well supported by a chain with closed "S"hooks or other means of support. These are visible from the floor. The SWEs judge it to be good practice.
If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

    -rPROPRIETARY -"NFGRMAT       '""O           WTTTTTTfT   T-   'fM    PTT      flTTfflf&#xfd;TT1?T Sheet 2 of 15 Status: Y[-- NZ U-Area Walk-By Checklist (AWC)
Location: Bldg. TURB             Floor El.
* Room, Area, BUS 15
: 4. Does it appear that the area is free of potentially adverse seismic spatial  Y-   NE UE1 N/A[l interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
A large size flex conduit with a metal end is held in place only with tie wraps. If the tie wraps failed under seismic loading, it is possible that the flex conduit would snap back to an uncoiled position and may impact the side of the RMU-113 cabinet.
Site engineering has reviewed this observation and concluded there is no seismic concern. Pleaserefer to the table contained in Appendix F for the disposition of this observation.
: 5. Does it appear that the area is free of potentially adverse seismic         YN NEI UD N/AD interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic         YZ NDI UL N/AD interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic         YZ NEI U-1 N/A[-1 interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
The SWEs noted an empty bucket roped to a column. They judged it to be acceptable in accordance with site's seismic housekeeping procedure.

                                                               -IT,--T
                                                                   -L. L .,LiL.'e .fD-,  PRO-      .--
PRAePRIETARY               INWkRChT!itA             V                          L .3BJ.'t     UeLIC        eLJ.L.. U L--
Sheet 3 of 15 Status: YE] NZ UE]
Area Walk-By Checklist (AWC)
Location: Bldg. TURB                  Floor El.    &#xfd;            Room, Area1 BUS 15
: 8. Have you looked for and found no other seismic conditions that could                               YE1 NO UC adversely affect the safety functions of the equipment in the area?
: 1. The bus duct to breaker 15-3 (on the top of breaker 15-3) has a flange connection that has its east side one and a half inch lower than its west side.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 2. Above breaker 15-6, the conduit support attatchment seems to be loose. It is connecting the conduit to the unistrut.
CAP 1353223 has been initiated to evaluate this observation.
Additonally, WR 83835 has been initiated to address this observation.
Comments (Additional pages may be added as necessary)
: 1. Caution tape (foreign material)is stuck to the HVAC exhaust diffuser above panel 70052.
: 2. Duct tape (foreign material)is stuck to a vertical conduit connected to bus 15 logic cab-relay cab 2.
: 3. Right next to the ladder over the electrical cable tray at the unistrut bolt, there are about 4 screws stored. The elevation is about 4' from the ground. It is not a seismic concern.
Plantpersonnel removed the identified foreign material.
Evaluated by: Dileep Cherlopalle           c,; -.N'\j '    _.,.,.                ,\    b,                 Date:    In - 2.-.112-
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                           . I t'r-IY                    -I- oe-_-pg_-                                             I/ f    2.-

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!  WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRtPRfETARY INFeRfMATION                        -  wVTHehO            FROm           ..L.ie. ,     LOe"*.         .
Sheet 1 of 6 Status: Yt     NE uE Area Walk-By Checklist (AWC)
Location: Bldg. TURB              Floor El.
* Room, Area& ROD DRIVE Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results ofjudgments and findings.
Additional space is provided at the end of this checklist for documenting. other comments.
: 1. Does anchorage of equipment in the area appear to be free of                       YED NEI UO N/AE3 potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant YO NiO UEi N!AEI degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                   YN Ni] UE-] N!AE]
raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
Block walls are all seismically designed. Block walls numbers 36 and 39 are safety related.
: 4. Does it appear that the area is free of potentially adverse seismic spatial         YZ N[i      UE] NlAE]
interactions with other equipment in flte area (e.g., ceiling tiles and lighting)?
There is an open "S" hook for the light fixture above terminalbox A 1723 for non-safety relatedroom cooling. There is no seismic interaction concern, CAP 1352001 has been initiatedto evaluate the open "S' hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has been initiatedto address these observations, If the room in which the SWEL item is located is very large (eg., Turbine Hail), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.
I

                                                      -&#xfd;MTTTTr\T"            T&#xfd;TT&#xfd;Tr&#xfd;       &#xfd;&#xfd;O&#xfd;T&#xfd;t&#xfd;TT&#xfd;&#xfd; Sheet 2 of 6 Status: YNi NEI ULIJ Area Walk-By Checkli1st (AWC)
Location: Bldg. TURB              Floor El.
* Room, Area, ROD DRIVE 5, Does it appear that the area is fiee of potentially adverse seismic           YO~ NEI UEJ N/AFl interactions that could cause flooding or spray in the area?
Supply and return lines to the MTR 154-46 11 rod drive airhandler blower have no fateral restraint(rod hung). The blower also has no lateralrestraint(three rod trapese hangers). There may be a potentially large movement at the blower.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
: 6. Does it appear that the area is fi'ee of potentially adverse seismic           YN NEI UL1 N/AD interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic            YU ND ULI N/A[-
interactions associated with housekeeping practices, storage of poilable equipment, and temporary installations (e.g,, scaffolding, lead shielding)?
: 8. Have you looked for and found no other seismic conditions that could           YO NEI U2 adversely affect the safety functions of the equipment in the area?
Commentes (Additional pages may be added as necessary)
Evaluated by: WAalf Do2r                                       /i                     Date.         1h/      1   ____

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  WIT.H.HOLD FROM PUBLIC DISCLOSUJRE The remaining pages are withheld from public disclosure.

Sheet 1 of 22 Status: YO NM U-]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX               Floor El.       &#xfd;         Room, Area1 SFP HX 122 Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                         Yr N[E U-1 N/AD1 potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
The unistrutsupport for panel 1LPB-4 and 1RPB3 seems to have no anchor bolts on one of the legs. There are anchorbolts for the other leg. The leg might have poor quality fillet welds. 1LPB-4 is mounted on a unistrut frame that also supports 1RPB3 and the three transformers above. The unistrut frame is clip angled to a structuralcolumn in three places and is welded to an I-beam at both ends. If there is no fillet weld on the left leg, the frame is still seismically adequate and will not pry off the wall and impact MCC 1GA Bus 1.
CAP 01352426 has been initiatedto document the missing anchors and WR.83676 was initiatedto installanchors for the leg that's missing anchors.
: 2. Does anchorage of equipment in the area appear to be free of significant             Y[    ND UI- N/AD[
degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                    YZ NEI UD[ N/AD raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial           Y[    NDI UD1 N/AD interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
A light fixture may swing into piping on both sides. However, the SWEs judge this to be acceptable because the light fixture has an acceptable range of motion and if it did impact the pipe, it would cause ductile deformation of the light hood with no damage to the pipe.
: 5. Does it appear that the area is free of potentially adverse seismic                   YZ ND U-- N/AD-interactions that could cause flooding or spray in the area?
IIf the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

P*'iPRTETAR* .iFORMATF,'Ti                    W!Thfrf""'"   FREW PUTTIC DI"CTO*iTG"
* Sheet 2 of 22 Status: YE] NZ UD-]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX              Floor El.     &#xfd;         Room, Area1 SFP HX 122
: 6. Does it appear that the area is free of potentially adverse seismic           YO NEI UI-- N/AEl interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic           YOI NO ULI1 N/AZ1 interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
See observations in the comment section.
: 8. Have you looked for and found no other seismic conditions that could         YO NEI UI" adversely affect the safety functions of the equipment in the area?
Comments (Additional pages may be added as necessary)
: 1. MCC 1GA BUS 2 is missing severalplastic plugs for holes on the end of the MCC.
CAP 01352415 has been initiated to evaluate the observation. In addition, WR 83671 has been initiatedto address the condition.
: 2. There are open "S"hooks for lighting fixtures in some of the locations in the heat exchanger area.
CAP 1352001 has been initiatedto evaluate the open "S"hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has been initiatedto address these observations.
: 3. A single light fixture has duct tape and it needs to be removed for housekeeping.
CAP 1352391 has been initiatedto address this foreign material.
: 4. The 122 spent fuel pool heat exchanger component cooling inlet line has two ultrasonicflow measurement devices strappedto the pipe with a metal strap.
Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
: 5. There is scaffolding tied to the spent fuel pool heat exchanger 122. One of the scaffold couplers is within 1" of touching CC-43-7.
CAP 1352559 has been initiated to evaluate this observation.

PROPRIETARY INFORP.TION                     WITHHOLD FlROM4    ")I'TT    DISCLOSURE Sheet 3 of 22 Status: YE] NZ    UF-Area Walk-By Checklist (AWC)
Location: Bldg. AUX           Floor El.
* Room, Area' SFP HX 122 Evaluated by: Bruce M. Low        zz.    &#xfd;     ,I.            -              Date:   &-,L9-122 Ollee- Cherlovalle      C- V tj\ke.p--

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

          '1,*,,1"*f'* "g'*"I-,1T "1-71 pl-I ,* ,,/* "* T T '*'T T'71 t* ,.i-*.ik/i.-/%i,.*-iT f'* "l*-i-44 W-W44 4- 4-, " "-Y-                4-444&#xfd;"44 P41- -+ &#xfd;-#+*                   WIT.-11h "'-D FROM PU'BLIC D...C.......
Sheet I of 18 Status: YE] NE U['-
Area Walk-By Checklist (AWC)
Location: Bldg. AUX                                            Floor El.                         &#xfd;       Room, Area' SFP PUMP 122 Instructions for Completing Checklist This checklist may be used to document the results of the Area Walk-By near one or more SWEL items. The space below each of the following questions may be used to record the results of judgments and findings.
Additional space is provided at the end of this checklist for documenting other comments.
: 1. Does anchorage of equipment in the area appear to be free of                                                         YER NDI UD] N/AD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?
: 2. Does anchorage of equipment in the area appear to be free of significant                                              YE NDI UI- N/AD3 degraded conditions?
: 3. Based on a visual inspection from the floor, do the cable/conduit                                                     YO NDI UD- N/AD]
raceways and HVAC ducting appear to be free of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)?
: 4. Does it appear that the area is free of potentially adverse seismic spatial                                           YOI NDI     UD1 N/AD-interactions with other equipment in the area (e.g., ceiling tiles and lighting)?
' If the room in which the SWEL item is located is very large (e.g., Turbine Hall), the area selected should be described.
This selected area should be based on judgment, e.g., on the order of about 35 feet from the SWEL item.

wIEThhODi3    FROm PuDiCi~ BEZOLO3~es&#xfd; (AWC)TI PRAreaWl-yCeTklis                                                                       Sheet 2 of 18 Status: Y[-- NE U[-]
Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.      &#xfd;         Room, Area' SFP PUMP 122
: 5. Does it appear that the area is free of potentially adverse seismic       YM NilO Ur1 N/AL]
interactions that could cause flooding or spray in the area?
: 6. Does it appear that the area is free of potentially adverse seismic       Y0 NE] U-] N/AE]
interactions that could cause a fire in the area?
: 7. Does it appear that the area is free of potentially adverse seismic       YEr   NZ UL] N/AD-interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?
There are stored Operationstest equipment above the electrical cabinet 1RPB6 next to the 121 spent fuel pool pump. Also, there are electricalwires loosely tied aroundthe piping next to the 184 entry door.
WR 83723 was initiatedto secure the instrumentationand cabling in accordancewith site procedures. CAP 1352586 was initiated to address the long term equipment configurationcontrol issue.
: 8. Have you looked for and found no other seismic conditions that could      YE] NEJ U--
adversely affect the safety functions of the equipment in the area?
A 3" copper line is running along the ceiling above 121 and 122 pumps.
It has beam clamps in the same direction and a broken hangerrod.
This configuration may be vulnerable in a seismic event.
CAP 1352733 was written to document this observation, and WR 83747 was initiated to re-attach the broken support.
Comments (Additional pages may be added as necessary)

SPROPRIETARY          INFORMA*TION            WITHHOLD FROM PU-BLIC DISCLOSUP.E Sheet 3 of 18 Status: YE] NM U[--
Area Walk-By Checklist (AWC)
Location: Bldg. AUX             Floor El.                Room, Area' SEP PUMP 122
: 1. A fire protection valve near the ceiling is using a tie wrap to hold the valve handle in position.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the dispositionof this observation.
: 2. The 121 spent fuel pump has a cover between the motor and the pump that is tied with two metal tie wraps. This cover is a radiationprotection shield and has no impact on the pump.
Site Engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation.
: 3. The 121 spent fuel pump has an anchor that is flush with the top of the nut. There are no threads beyond the nut. There is no impact on the seismic capacity.
: 4. There are four maintenance stands (CTV upper frame stands) about 5' high with four legs. One of the cabinets is next to the steam heating line, and it is not tied down to any structuralmember.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 5. The radiationprotectionstands with signs for contaminatedarea are close to the 121 spent fuel pool pump and could potentially impact the glass oil bubbler on the pump. One stand is not rolled, and the other stnad is not taped.
Site engineering has reviewed this observation and concluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation.
: 6. There is lead radiationprotection shielding chained to the wall near the spent fuel pool skimming pumps. If the shielding falls, it could potentially damage the tubing.
CAP 1352586 has been initiatedto evaluate this observation. WR 83641 has been initiatedto improve the shielding tie-off.
Evaluated by: Bruce M. Lor.                                                           Date:  ___--___-_____
Dileep Cherlopalle           C-. "pii le.p -- ,-.. e                        __\______-__

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report S'UNSI-WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report D
Plan for Future Seismic Walkdown of Inaccessible Equipment This section discusses the plan for future seismic walkdowns to complete the inaccessible items from SWEL 1 which were deferred either for containment entry or cabinet internal inspection.
Table D-1 summarizes the reasons each item is inaccessible during normal plant operation.
As shown in the table below, 29 items have been deferred until a refueling outage or an appropriate time when the equipment is accessible. Inaccessibility of this equipment was either based on the location of the equipment (environment that posed personnel safety concerns while the unit is operating), or due to the electrical safety hazards posed while the equipment is energized.
All items will be walked down by the end of refueling outage (RFO) 1 R30 in Spring 2016. An updated submittal report with the walkdown results of the deferred items will be provided 60 days following the end of RFO 1 R30.
Table D-1: Summary of Inaccessible Equipment Equipment ID             Description                  Reason for Inaccessibility 053-481D1 DSL GEN 053-481           EXPANSION TANK              Protected equipment - no access 075-012         122 CONT RM CHLR              Protected equipment - no access Internal inspection requires re 11 BATT CHG       11 BATTERY CHARGER                   equinteto     beout equipment    to be out of service 132-281         11 SFGDS SCRNHSE              Need scaffold to verify knee brace ROOF EXHT FAN                as part of anchorage verification 174-013             13 CNTMT FCU               In containment - requires outage MN STM FR 11 STM 1FT-464         GEN CHNNL I RED F              In containment - requires outage XMTR D-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table D-1: Summary of Inaccessible Equipment Equipment ID          Description           Reason for Inaccessibility 1 LT-428      1 PRZR   (CHNL LVL XMTRIII-BLU)  In containment - requires outage 11 STM GEN LOOP A 1 LT-461    CHNNL I RED LVL XMTR       In containment    - requires outage BUS 122 480V           Internal inspection requires SWITCHGEAR           equipment to be out of service BUS 16 4.16KV           Internal inspection requires SWITCHGEAR           equipment to be out of service 11 CRDM SHRD CLG CV-39405           COIL SPLY CV         In containment - requires outage MOTOR CONTROL              Internal inspection requires MOOl~l      CENTER 1lA BUS 1         equipment to be out of service MCCMOTOR                 CONTROL           Internal inspection requires CENTER 1AB BUS 2          equipment to be out of service MOTOR CONTROL              Internal inspection requires CENTER 1K BUS 2          equipment to be out of service MOTOR CONTROL              Internal inspection requires CENTER 1 L BUS 2        equipment to be out of service MOTOR CONTROL              Internal inspection requires CENTER 1T BUS 2          equipment to be out of service MTR 111 F-31     1 INVERTER (INSTR           Internal inspection requires BUS I1-WHI)          equipment to be out of service 13 INVERTER (INSTR          Internal inspection requires BUS III-BLU)         equipment to be out of service 14 FCU CLG WTR OUTL MV-32141             ISOL MV A         In containment - requires outage DISTRIBUTION PANEL           Internal inspection requires 11              equipment to be out of service D-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table D-1: Summary of Inaccessible Equipment Equipment ID         Description            Reason for Inaccessibility PNL 111      INSTR BUS II (WHI) PNL       Internal inspection requires 111             equipment to be out of service INSTR BUS Ill (BLUE)        Internal inspection requires PNL 113           equipment to be out of service PNL 12       DISTRIBUTION PANEL          Internal inspection requires 12             equipment to be out of service AC DISTRIBUTION           Internal inspection requires PANEL 133           equipment to be out of service PNL 136         AC DISTRIBUTION           Internal inspection requires PANEL 136           equipment to be out of service DISTRIBUTION PANEL          Internal inspection requires 153             equipment to be out of service PNL 1EM           DIST PNL 1EM            Internal inspection requires equipment to be out of service 11 FCU DISCH TO SV-33371        CNTMT DOME CD-         In containment - requires outage 34072 SV Ul TRN A CHLD SV-37460     WTR/CLG WTR ISOL SV       In containment   - requires outage D-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI  - WHIT, m-: FROM PUBLIe D.s.L.SURE OLD E
Peer Review Report This appendix includes the Peer Review Team's report, including the signed Peer Review Checklist for the SWEL from Appendix F, Checklist for PeerReview of SSC Selection, of Reference 1.
Table E-1 of this appendix includes information on the location of SWEL components, which is considered SUNSI, of which the loss, issue, modification, or unauthorized access can reasonably be foreseen to harm the safe operation of the nuclear plant.
Pages which contain proprietary SUNSI information have been marked, and the sensitive information has been redacted.
E-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Peer Review Report for Near Term Task Force (NTTF) Recommendation 2.3 Seismic Walkdown Inspection of Prairie Island Nuclear Generating Station Unit 1 November 15, 2012 Prepared by Peer Reviewers Todd A. Bacon, PE (Team Leader)
Mark S. Etre Dileep Cherlopalle S. Seilhymer Todd Bacon Peer Review Team Leader Certification Signature                            Date: November 15, 2012 E-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Introduction Overview This report documents the independent peer review for the Near Term Task Force (NTTF) Recommendation 2.3 Seismic Walkdowns performed by Stevenson &
Associates (S&A) for Unit 1 of the Prairie Island Nuclear Generating Plant (PINGP). The peer review addresses the following activities:
* Review of the selection of the structures, systems, and components (SSCs) that are included in the Seismic Walkdown Equipment List (SWEL).
         "    Review of a sample of the checklists prepared for the Seismic Walkdowns &
Area Walk-bys.
* Review of any licensing basis evaluations.
* Review of the decisions for entering the potentially adverse conditions into the plant's Corrective Action Plan (CAP).
* Review of the final submittal report.
The peer reviewers for PINGP Unit 1 are Messrs. Todd A. Bacon and Mark S. Etre of S&A, and Dileep Cherlopalle and S. Seilhymer of NSPM. Mr. Bacon is designated the Peer Review Team Leader. Messrs. Etre and Bacon are not involved in the seismic walkdown inspection process so that they can maintain their independence from that portion of the project. Mr. Bacon is a civil-structural engineer with over thirty years of nuclear engineering experience and has received the Seismic Walkdown Engineer (SWE) training. Mr. Etre is an advanced degree mechanical engineer with an undergraduate civil-structural engineering degree and over twenty-two years of nuclear power plant experience. Mr. Etre has also been trained as a Seismic Capability Engineer (5-day EPRI-SQUG Training) and a Seismic Walkdown Engineer (SWE EPRI 2-day training). Mr. Cherlopalle and Mr. S. Seilhymer from the Operations department have participated in the peer review of the SWEL, while Mr. Bacon and Mr. Etre have participated in all other phases of the peer review process for PINGP Unit 1.
The SWEL development was performed by Messrs. P. Valtakis of NSPM and Bruce Lory of S&A. The peer review resulted in no additional findings beyond the comments shown on the checklist dated October 22, 2012. The SWEL Peer Review checklist is found in Attachment 1. The discussion for the SWEL development peer review is also contained in this peer review report.
Interviews were conducted by Messrs. Bacon and Etre with the SWE inspection team after review of a sample of the Unit 1 Seismic Walkdown Checklists (SWCs) and the Area Walk-by Checklists (AWCs) to ascertain procedural compliance with the Seismic Walkdown Guidance (SWG). The interviews were conducted by Mr. Bacon with Messrs.
E-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Dennis Zercher, Kyle Kriesel, Walter Djordjevic and Bruce Lory of the SWE inspection team on October 23, 2012. Messrs. Etre and Bacon conducted interviews with all of the above including Dileep Cherlopalle of NSPM, but without Mr. Dennis Zercher on October 30, 2012. Mr. Cherlopalle was a member of the SWE inspection team as well as the peer reviewer for the SWEL development. In addition, Messrs. Etre and Bacon conducted an interview on November 5, 2012 with Mr. Zercher to ensure both peer reviewers interviewed all members of the SWE team. The discussion of the sample SWCs and AWCs is provided in the peer review report.
No issues were identified which challenged the current licensing basis.
E-4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Peer Review - Selection of SSCs Purpose The purpose of this section is to describe the process to perform the peer review of the selected structures, systems, and components, (SSCs) that were included in the Seismic Walkdown Equipment List (SWEL).
This section documents the Peer Review - Selection of SSCs performed for PINGP - Unit 1.
Peer Review Activity - Selection of SSCs The guidance in EPRI Technical Report 1025286, Seismic Walkdown Guidance for Resolution of Fukushima Near-Term Task Force Recommendation 2.3: Seismic, dated June 2012, Section 3: Selection of SSCs was used as the basis for this review.
This peer review was based on interviews with the following individuals who were directly responsible for development of the SWEL:
Mr. P. Valtakis, Prairie Island Plant Engineer Mr. Bruce Lory, Senior Mechanical Engineer This peer review utilized the checklist shown in the SWG, Appendix F: Checklist for Peer Review of SSC Selection.
For SWEL 1 development, the following actions were completed in the peer review process:
    " Verification that the SSCs selected represented a diverse sample of the equipment required to perform the following five safety functions:
o    Reactor Reactivity Control (RRC) o    Reactor Coolant Pressure Control (RCPC) o    Reactor Coolant Inventory Control (RCIC) o    Decay Heat Removal (DHR) o    Containment Function (CF)
This peer review determined that the SSCs selected for the seismic walkdowns represent a diverse sample of equipment required to perform the five safety functions.
* Verification that the SSCs selected include an appropriate representation of items having the following sample selection attributes:
o Various types of systems o Major new and replacement equipment o Various types of equipment
            " Various environments E-5

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report o   Equipment enhanced based on the findings of the IPEEE o   Risk insight consideration The SWEL peer review commented that no Safety Injection (SI) or Component Cooling (CC) equipment were on the SWEL reviewed. SWEL 1 was revised to expand the selection of equipment beyond the scope of the equipment submitted to the NRC as the IPEEE equipment list. Specifically the following equipment was added to SWEL 1 to be walked down:
* 145-071, the 11 SI Pump
* MV-32077, Sump B To 11 RHR Pump Train A (Outside) MV
* 145-122, the 12 CC Pump This final peer review determined that the SSCs selected for the seismic walkdowns include a sample of items that represent each attribute/consideration identified above.
Peer Review Findings - Selection of SSCs This peer review found that the process for selecting SSCs that were added to the SWEL was consistent with the process outlined in the SWG Section 3: Selection of SSCs.
The peer review checklist dated October 22, 2012 is attached to this document. There were no additional findings from the Peer Review other than those noted on the checklist.
Resolution of Peer Review Comments - Selection of SSCs All comments requiring resolution were incorporated prior to completion of this peer review.
Conclusion of Peer Review - Selection of SSCs This peer review concludes that the process for selecting SSCs to be included on the seismic walkdown equipment list appropriately followed the process outlined in the SWG, Section 3:
Selection of SSCs. It is further concluded that the final SWEL sufficiently represents a broad population of plant Design Class I equipment and systems to meet the objectives of the NRC 50.54(f) letter.
E-6

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Review of Sample Seismic Walkdown & Area Walk-Bys Checklists Overview A peer review of the SWCs and AWCs was performed after which an interview was conducted by Messrs. Bacon and Etre with the SWE inspection team in accordance with the SWG requirements. Interviews were conducted with the SWEs on October 23 and 30, 2012, as well as on November 5, 2012. The SWE trained walkdown engineers were Messrs. Dennis Zercher, Kyle Kriesel, Dileep Cherlopalle, Walter Djordjevic and Bruce Lory.
Sample Checklists Table E-1 lists the SWC and AWC samples which represent approximately 22% of the SWCs and 24% of the AWCs.
Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 quipment E              quipment Class        Walkdown Item               Observations Identification 12 Reactor Vessel                 c   er 18  - Instruments  on  H ea       ct RangeN 1LT-763                    RacksHead           Dynamic Range TRN B D/P Transmitter 20 - Instrumentation 1NR3              and Control Panels     NIS Rack III (BLU)            No concerns and Cabinets               1 NR3 11 BATT              15-Batteries on     11 Battery (& Battery           No concerns RacksRack) 12 BATT CHG          16 - and Battery Chargers Inverters                                    No concerns 12 Battery Charger 032-292                   9 - Fans          122 Cont. Room               No concerns Clean-up Fan 053-201           21 - Tanks and Heat     D1 Diesel Generator            No concerns Exchangers        Fuel Oil Day Tank 21 - Tanks and Heat                              Missing U-bolt assessed 053-481                  Exchangers       D1 Diesel Generator      and determined OK by Expansion Tank            plant engineering.
E-7

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 quipment E        quipment Class       Walkdown Item                 Observations Identification Open S-hooks not a credible hazard to transformer. CAP 112M/XFMR        4 - Transformers                                 01352001 written to 112M Transformer         address open S-hooks.
WR 83556 also written to address this observation.
12 Cooling Water 135-101      21  - Tanks and Heat    Pump DSL JCKT                   No concerns Exchangers          Cooling Heat Exchanger Black insulation found behind the 12 CC pump at support column base 145-122      5 - Horizontal Pumps      12CC Pump                1-CCH-375 (support number). CAP 1352321 written to address FME issue.
FME underneath loose conduit clamp could be nut. Conduit clamp found loose with nut missing (found underneath on floor).
158-011             0 - Other        11 Cooling Water         Solenoid valve nearby Strainer            and adjacent conduit clamp on other side is tight. Therefore SWE judge loose conduit clamp not an adverse seismic condition.
Lighting fixture will collide with the drip pan 174-162         10 - Air Handlers  Train A Event MON          or lateral frame, but is RM West Unit CLR         not a seismic hazard to the cooler.
55400           14- Distribution  D1 Diesel Generator               No concerns Panels       Auxiliary Control Panel E-8

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 Equipment       Equipment Class         Walkdown Item Identification                                                          Observations CV-31153       7 - Fluid Operated     11 TD AFW Pump                   No concerns Valves       RECIRC/L-O CLG CV Conduit clamp missing nut (judged not a seismic concern). CAP 1353581 initiated to evaluate this observation and WR83924 initiated to address observation.
Also, CV-31652 F/R and CV-31653 F/R mounted with one screw - judged CV-31652       7 - Fluid Operated  11 CLG Water Strainer         acceptable for seismic Valves            Backwash CV            loading. Screws are not fully threaded but judged acceptable for seismic loading. CAP 1353368 has been initiated to evaluate this observation.
Additionally, WR 83878 has been initiated to address this observation.
20 - Instrumentation D-1         and Control Panels     Control Panel D-1                No concerns and Cabinets Partition wall next to E-1 missing all 6 floor bolts.
Vertical bolts are in 20 - Instrumentation                                place. CAP 1357500 E-1        and Control Panels                              initiated to evaluate this and Cabinets                                         observation.
Additionally, WR 84916 initiated to address this observation.
8 - Motor Operated MV-32017          and Solenoid       LOOP B Main Steam                 No concerns Operated Valves     To 11 TD AFWP MV E-9

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 Equipment       Equipment Class               Walkdown Item                Observations Identification 8 - Motor Operated          Sump B To 11 RHR MV-32077           and Solenoid                PumpNo                          concerns Operated Valves                (Outside) MV 8 - Motor Operated                                      Light fixture south of MV-32238           and Solenoid                                      valve has open S-hook, Operated Valves         11 AFW TO 11 SG MV           judged not a seismic hazard.
14 - Distribution PNL 11                Pael Panels   Distribution Distribution Panel 11            No concerns RS-21-1        7 - Fluid Operated          11 SG Main Steam               No concerns Valves                  Header Relief 8 - Motor Operated           11 SFGDS Screen-SV-33694           and Solenoid            house Roof Exhaust              No concerns Operated Valves            Fan CD-34137 SV VC-28-2        7 - Fluid Operated             12 CHG Pump                 No concerns Valves                 Discharge Relief E-10

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report AN   aimAm    IA#iom     Ni    mAi
* PMAB L--m m*mL-m   1*im * ................              .............. L ........ m m" -"
U13"       m -1JE IEE ill u            F-nrr1V IV       LFL Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 Area Walkdown Description                                                              Observations Aux. Bldg. Northeast                   Aux. bldg. special vent zone boundary line hanger rod in contact with component cooling line at hanger 1-CCH-185 -
judged not a seismic concern; light fixture above VFD cabinets for 11 and 13 charging pumps close (1 ") to conduits running into top of VFDs - judged not a seismic concern by site engineering; duct tape needs to be removed from special vent zone line - CAP 1352391 was initiated to document this observation; two abandoned hanger rods exist above the component cooling line with hanger rod 1-RHRH-385 near MCC2K Bus 2 - no seismic concern per plant engineering.
CAP 01352549 and WR 83712 were initiated to remove the hanger rods for personnel safety reasons.
Aux. Bldg. 122 CRM Chiller              No concern SSCN Bldg. 12 DD CLWP                   Status "N" - 121 filtered water strainer adjacent to the diesel oil day tank skid has corroded anchors (wet environment). The corrosion is not significant. Anchorage of the diesel driven cooling water pump also shows slight corrosion, as it is in a wet environment. CAP 1352851 was initiated to document this observation, and WR 83771 was initiated to address the corrosion.
Turb. Bldg. 11 AFWP                     Status "N" - Lighting has open S-hooks near TD AFW pump; CAP 1352001 initiated to evaluate this observation and WR 83556 initiated to address this observation. Missing fastener on guard for 121 Inst. Air compressor; CAP 1352975 initiated to evaluate observation; WR 837,93 initiated to address observation. Chain fall for 2AF01 301 can potentially strike MCC 1A BUS 1; CAP 1352961 has been initiated to evaluate observation and WR 83796 initiated to address observation.
Turb. Bldg. 11 Battery Room             No concern Turb. Bldg. EDG D-1                     Status "N" - possible open S-hook on a light fixture above the diesel generator control panel; CAP 1352001 initiated to evaluate the open S-hooks identified and WR 83556 initiated to address the observation.
E-11

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS' - WI:i-H 1:13 FROM PUBLIe DISCLO3URE Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 Area Walkdown Description                              Observations Turb. Bldg. Bus 15          Status "N" - Emergency Light El. 15 has a missing wing nut; CAP 1352966 initiated to evaluate this observation and WR 83790 initiated to address observation. Large size flex conduit with a metal end held in place only with tie wraps; if the tie wraps failed under seismic loading, it is possible that the flex conduit would snap back to an uncoiled position and may impact the side of the RMU-1 13 cabinet. Site engineering has reviewed this observation and concluded there is no seismic concern. ITEM 6 CHECKED "Y" AND "N". Bus duct to breaker 15-3 (on the top of breaker 15-3) has a flange connection that has its east side one and a half inches lower than its west side; no seismic concern per site engineering.
Above breaker 15-6, the conduit support attachment seems to be loose; it is connecting the conduit to the Unistrut; CAP 1353223 initiated to evaluate this observation and WR 83835 initiated to address this observation.
E-12

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report
                     . Mi MA ..M WITHrouto FR      M FUMLOU U1ZAfLVZOUK Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 1 Area Walkdown Description                                    Observations Aux. Bldg. Control Room           Status "N" - Lighting diffusers are tied off to the support grid; Unit 1 and Unit 2 "C"panels have a fluorescent light fixture on chains too close (within 1"- 2") to the panel; CAP 01352209 initiated to evaluate this observation. A trash can next to the racks R23, R24, R 13, and R 14 are immediately adjacent to the racks, which violates the seismic housekeeping procedure; site engineering has reviewed this observation and concluded there is no seismic concern. A step ladder adjacent to racks R23, R24, R13 and R14 is too close to the racks; the wheels should be chocked. There were several open S-hooks on light fixtures; CAP 01352001 initiated to evaluate observation and WR 83556 initiated to address observation. Unit 1 and Unit 2 "E" panels have side panels that have slid out of position; this is a housekeeping issue and not a seismic concern; CAP 01352102 initiated to evaluate this observation and WR 83579 has been initiated to address observation. Fire extinguisher bracket 224 has a rotated bracket (into the insulation) and should be repaired; WR 83584 initiated to address observation. The following observations were judged not to be seismic concerns by site engineering: 1) The filing cabinets adjacent to the main control board in both Unit 1 and Unit 2 are close to the main control board, 2) A set of drawers next to the in-core logic selection switch panel are close to the panel, and 3) The cart adjacent to the Protection Systems III and the cart adjacent to cabinets RPI-1, -2, and -3 in Unit 1 are close to the equipment; the chain is not used to restrain the carts.
Evaluation of Findings There were no findings that challenged the licensing basis. Tables 5-2 and 5-3 of the Seismic Walkdown Report (final submittal report) provide the lists of the issues encountered for the equipment seismic walkdowns and area walk-bys.
The scaffolding and seismic housekeeping procedures were reviewed by the SWEs in order to gain a full understanding of the plant practices in regard to those procedures.
There were no seismic concerns noted in Unit 1 with regard to scaffold erection. The scaffolds were properly tied off and braced, and properly tagged with respect to the procedure.
There were several seismic housekeeping issues identified during the walkdowns which are not in accordance with plant procedures. However, these did not result in any E-13

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS' WT I*"iOL-m FROM PUBLIC DIsCLOSURE potentially adverse seismic conditions being identified. The peer review team recommends training to the housekeeping procedures for the entire plant to refresh these practices in everyone's mind.
A number of lighting fixtures with open S-hooks were found in the plant; however, none of them resulted in any seismic issues as evidenced by reviewing the CAPs written (see Tables 5-2 and 5-3) during these walkdowns.
The peer reviewers consider the judgments made by the SWEs to be appropriate and in accordance with the SWG.
E-14

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Review of Licensing Basis Assessments Tables 5-2 and 5-3 of the Seismic Walkdown Report provide a list of the issues encountered during the Unit 1 seismic walkdown inspections for the SWEL components and how they were addressed. If a PINGP CAP request was generated it is shown in the Tables. Interviews were conducted by Messrs. Bacon and Etre with the SWE inspection team on October 23 and 30, 2012, as well as November 5, 2012 to discuss the issues identified. No potentially adverse seismic conditions were identified that resulted in a seismic licensing basis evaluation. The peer reviewers concur with this outcome.
E-15

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Review Final Submittal Report & Sign-off The entire final submittal report has been reviewed by Messrs. T. Bacon and M. Etre and found to meet the requirements of the EPRI 1025286 - Seismic Walkdown Guidance. The Peer Review determined that the objectives and requirements of the 50.54(f) letter1 are met.
Further, the efforts completed and documented within the final submittal report are in accordance with the EPRI guidance document.
1 NRC Letter to All Power Reactor Licensees et al., "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendation 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," Enclosure 3, "Recommendation 2.3: Seismic," dated March 12, 2012 E-16

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report : Peer Review Checklist for SWEL Sheet I of 5 Peer Review Checklist for SWEL #1 -Prairie Island Units 1 and 2 Instructions for Completing Checklist This peer review checklist may be used to document the review of the Seismic Walkdown Equipment List (S'WEL) in accordance with Section 6 Peer Review. The space below each question in this checklist should be used to describe any findings identified during the peer review process and how the SWEL may have chasged to address those findings. Additional space is provided at the end of this checklist for documenting other comments.
: 1.    'ere the five safety functions adequately represented in the SWEL I selection?                   Y23 NEI The Peer Review Team reviewed the list of selected equipment to validate the assignment of the correct safety functions to the components. The Peer Review Team agrees that the four safety functions specified in the EPRI guidance as well as the containment function are represented. No comments.
: 2. Does SWEL I include an appropriate representation of items having the following sample selection attributes:
: a. Various types of systems?                                                                         YS NEI The Peer Review Team reviewed the list of selected equipment to validate that a sufficient sampling of plant systems related to the safety functions was represented.
The list below shows the count of components in each of Prairie Island's systems, per unit. The Peer Review Team concluded that there is a sufficient sampling of the various plant systems was represented.
The following is a summary of the sampling of equipment classified on the current list.
AF        AUXILIARY FEEDWATER                            7                    8 AT        AUX START-UP/STDBY                             0                    0 XFMRS BM         SITE MISCELLANEOUS                             3                    3 MAINTENANCE CC        COMPONENT COOLING                              I                    I CL        COOLING WATER                                  16                  12 Dl        DI EMERGENCY DIESEL                           10             Not Applicable D2        D2 EMERGENCY DIESEL                            0             Not Applicable D5        D5 EMERGENCY DIESEL                    Not Applicable               8 D6        D6 EMERGENCY DIESEL                    Not Applicable               I DC        DC AUXILIARIES                                 8                    9 EA        4.16KV ELECTRICAL                              2                    2 EB        480V ELECTRICAL                               10                   12 EM         EVENT MONITORING                               6                    6 EX         240/120V MISC AUXILIARIES                      4                    4 E-17

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Sheet 2 of 5 Peer Review Checklist for SWEL #1 -Prairie Island Units 1 and 2 1NM I KUMLt SOURCES MP        MISC PLANT INSTRUMENTS                      1                  0 MS        MAIN STEAM                                  2                   3 NI        NUCLEAR INSTRUMENTATION                             1                  I PI        ROD POSITION INDICATION                    0                   0 RC        REACTOR COOLANT                            0                   0 RE        REACTOR CONTROL                            0                   0 RH        RESIDUAL HEAT REMOVAL                      0                   0 RP        REACTOR PROTECTION                         6                   5 SA       STATION AR1        & INSTRUMENT                                        0 AIR SF       SPENT FUEL POOL COOLING                     0                   0 SI        SAFETY INJECTION                           2                   2 VC       CHEMICAL & VOLUME                           2                   2 CONTROL ZC       CONTAINMENT VENT                            2                   2 ZG        DIESEL ROOMS VENT                          2                   0 ZH        SAFEGUARDS CHILLED                         6                   2 WATER ZN       CONT/RELAY/CMPTR RM                                             0 VENT ZR       SCREENHOUSE VENT                            3                    1 zX       CNTMT & AUX BLDG COOLING                                     4                   5 Totals:            107                  94
: b. Major new and replacement equipment?                                                          YO NEI The Peer Review Team validated that the list of selected equipment contained a sufficient sampling of plant equipment that has been replaced in recent years. This included large components such as the II and 12 Battery Chargers.
E-18

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Sheet 3 of 5 Peer Review Checklist for SWEL #1 -Prairie Island Units 1 and 2 The Peer Review Team noted the following issues that require follow up:
: 1) 21 and 22 Batt Charger were not listed as new or replace.
Response: Latest version of SWEL has now identified these as "Yes" in the "New/Replace" column.
: c. Various types of equipment?                                                                   YN NEIl The Peer Review Team reviewed the list of selected equipment against Appendix B of the EPRI Seismic Walkdown Guidance (1025286).
The Peer Review Team noted the following issues that required follow up:
: 1) It appears that there are no "Air Compressors" selected in SWEL 1. Appendix B lists Air Compressors as a class of equipment. Verify if "Air Compressors" need to be included.
Response: Equipment selected for walkdown in SWELl must be classified as Seismic Category 1 before being considered. The air compressors are not Seismic Category 1, therefore there are no aircompressors (Equipment Class 12) included on SWELl.
: 2) Will the Battery Room (11, 12, 21 & 22 BATM) walkdown include "Battery Racks" also? If not, consider including "Battery Racks" as recommended in Appendix B.
Response: The SWELs have been revised to clarify that the equipment description includes the battery racks as well as the batteries.
: 3) No equipment is selected from Safety Injection (SI) and RHR system?
Response: It was decided that the SWELs for both units will now include equipment from the SI system, although the original IPEEE submittal did not include this system as required in order to get to safe shutdown condition.
: 4) No components for the CC systems are selected for the walkdown. CC system provides support for RCP seal cooling (along with charging)
Response: The CC Pumps and a small number of relief valves are classified Seismic Category 1. We have added the 12 CC pump (145-122) and 22 CC pump (245-122) to the SWELl lists.
: 5)   SF - RWST Purification pumps are Seismic Cat I but are not listed. (These could affect RWST supply to charging needed for loss of offsite power)
Response: These pumps [11 Refueling purification pump (195-091) and the 22 Refueling Water Purification Pump (295-091)] are classified as Non-Safety Related, Seismic Category 1. Operations Representative (P. Valtakis) confirmed the pump classification to be correct per Q-List rebaseline project. Since these pumps do not provide one of the 5 safety functions identified in EPRI 1025286 E-19

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Sheet 4 of 5 Peer Review Checklist for SWEL #1 -Prairie Island Units 1 and 2 guidance, these pumps do not meet the criteria to be considered for seismic walkdown. Therefore these pumps will not be added to SWELL.
: d. Various environments?                                                                          Y[D Nn The Peer Review Team reviewed the list of selected equipment against criteria for selection listed in the EPRI Seismic Walkdown Guidance (EPRI report 1025286).
The team determined that a reasonable effort was made to select equipment in different locations throughout the plant, and it meets the requirements from the EPRI guidance with respect to the various environments considered.
: e. Equipment enhanced based on the findings of the IPEEE (or equivalent) program?                 Y0 Nil The Peer Review Team noted that some equipment selected for walkdown on SWELl were also identified as equipment enhanced as a result of the IPEEE effort.
This meets the requirement from the EPRI guidance to select a sample of IPEEE enhancements.
: f. Were risk insights considered in the development of SWEL 1?                                    YlZ NEI The Peer Review Team reviewed the list of the top 50 risk significant equipment items from the SWELs. Roughly 18 of the 200+ equipment listed on the Prairie Island SWELs have ties to the top 50 risk significant systems. The team concluded this was a strong sample and was well documented.
: 3. For SWEL 2:
: a. Were spent fuel pool related items considered, and if applicable included in SWEL 2?           YO NEI No comments
: b. Was an appropriate justification documented for spent fuel pool related items not included      YEI NEI in SWEL 2?
There are SFP related equipment included in SWEL 2, therefore no justification is required.
E-20

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Sheet 5 of 5 Peer     Review      Checklist         for SWEL #1 -Prairie Island   Units I and  2
: 4. Provide any other comments related to the peer review of the SWELS.
Noea yL~zJ    NEJ
: 5. Have all peer review comments been adequately addressed in the final SWEL?
Peer Revieser
         #I:    Stev   Seilhvl .... r (0-)     &#xa2;*                                        Date: I C-- z .-- - '--
Peer Reviewer Dale: ~-22-V.
E-21

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS!     WT*,I-LD "O..........
M PUDLC            "L.SUf.
F Disposition of Seismic Walkdown Observations This appendix includes a discussion of how observations noted in the Seismic Walkdown Checklists (SWC) and Area Walk-By Checklists (AWC) were dispositioned. All observations noted in the SWCs or AWCs were reviewed by site engineering to determine whether or not the issues could be readily shown to meet the seismic licensing basis. If it was clear that the observations noted by the SWEs were not seismic concerns, then the observation was dispositioned as needing no further actions.
However, if site engineering could not readily determine if the condition met the seismic licensing basis, then the observations were entered into the CAP. Table F-1 and Table F-2, below, lists the observations identified in the SWCs and AWCs, and how each observation was dispositioned. Only those observations which required additional review by site engineering are included in these tables. Comments or recommended enhancements are not included.
The AWCs in this appendix include information on the location of SWEL components, which is considered Sensitive Unclassified Non-Safeguards Information (SUNSI), of which the loss, issue, modification, or unauthorized access can reasonably be foreseen to harm the safe operation of the nuclear plant. Pages which contain proprietary information have been marked, and the sensitive information has been redacted.
F-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table F-1: Disposition of Seismic Walkdown Observations Walkdown  Question                        Observation                                                 Disposition Checklist   No.
Bottom latch has some apparent deterioration             CAP 1353290 has been initiated to evaluate this 55000      11     degradation due to engine vibration. This condition         observation. WR 83855 has also been initiated to does not affect seismic capacity; however,                           address this observation.
recommend repair for maintenance purposes.
The light fixture in the vicinity of the control panel has an open "S"hook connecting the fixture to its chain at     CAP 1352001 has been initiated to evaluate the open the bottom and at the ceiling connection. Both "S"          "S" hooks identified during these walkdowns. In hooks are open. The light fixture could fall under       addition to the action request, WR 83556 has been seismic loading and strike SV-5730419 and CS-                     initiated to address this observation.
5731407 and SA- 111-13.
Some light fixtures in the area have open "S"hooks,       CAP 1352001 has been initiated to evaluate the open but these light fixtures are not near enough air lines to      "S" hooks observed during the walkdowns. In be a credible hazard. The "S" hooks should be closed        addition to writing an action request, WR 83556 has for maintenance purposes.                          been initiated to address the observations.
One light fixture has an open "S"hook on the bottom connection of the chain. Under earthquake conditions         CAP 01352001 has been initiated to evaluate the SWEs judge that the light fixture will drop off the open   open "S" hooks identified during these walkdowns. In 069-242            "S" hook and swing into the filter. SWEs judged that       addition to writing an action request, WR 83556 has impact is credible but not significant. The light fixture         been initiated to address this observation.
will not impact the soft target of the glass window.
Therefore, the safety function is not impaired.
F-1

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown  Question                        Observation                                                Disposition Checklist    No.
There is a coil of cable that looks like it is coiled up   CAP 01353147 has been initiated to evaluate this 111 M/XFMR Comments  using electrical tape. This is not a seismic issue with    observation. In addition to the action request, WR 111 MXFMR.                          83841 has been initiated to address this observation.
CAP 01352001 has been initiated to evaluate the 112MXFMR       7    Some "S"hooks may be open on lighting fixtures but          open "S"hooks identified during the walkdowns. In they are not a credible hazard to the transformer.      addition to writing this action request, WR 83556 has been initiated to address this observation.
It was determined by reviewing the vendor technical Overhead air handling unit is supported by three rod          manual that if the end trapeze support were to 125MR       8     hangers. One rod hanger is a cross member and is          become dislodged the remaining supports would be not positively secured to air handler casing.          capable of supporting the load of the unit and this does not create a seismic interaction concern.
CAP 1352001 has been initiated to evaluate the open There are open "S" hooks on lighting fixtures but they     "S"hooks on light fixtures which have been identified 145-042      7       are not deemed a credible hazard to the charging         during these walkdowns. In addition to this action pumps.                             request, WR 83556 has been initiated to address these observations.
Foreign material (black insulation 1" x 2" x 8") found behind the 12 CC pump at column base 1-CCH-375 145-122  Comments                     (support number).                         CAP 1352321 issued to address FME problems.
F-2

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table F-1: Disposition of Seismic Walkdown Observations Walkdown   Question                          Observation                                           Disposition Checklist    No.
The insulation appears to have been cut out to a        he insulation       thee     woul bo The insulation for the 15 SWGR RM unit cooler return 10    line is touching an adjacent 4" diameter conduit. This        alcom etal interationduri        a sm         nt 174-031 location is between the unit cooler and the wall.           thinfgration             is acceptable.
This configuration is acceptable.
The contact of the light is at the connection of the B15 LOGIC-               A light fixture is touching the electrical conduits   chain. There will be no hard impact and there is a 2         8        feeding the Bus 15 Logic Relay cabinet 2, which      conduit support adjacent to the location. The light will contains essential relays.              not impact the function of the equipment, so there is no seismic concern.
B15 LOGIC- Comments   Foreign material was found inside the cabinet at the    WR 83773 has been initiated to remove the foreign 2                 bottom (one screw and a piece of wire insulation).                  material inside the cabinet.
CAP 1352001 has been initiated to evaluate the open The light fixture has an open "S" hook. The remaining    "S" hooks on light fixtures which have been identified CV-31059      7      chain will ensure the equipment is not impacted, so      during these walkdowns. In addition to this action there is no seismic concern,               request, WR 83556 has been initiated to address these observations.
The conduit feeding power to CV-31652 has one conduit clamp that is missing a nut. SWE's judge         CAP 1353581 has been initiated to evaluate this CV-31652     11         existing conduit configuration is still seismically     observation. Additionally, WR83924 has been adequate and acceptable. However, it is                  imitated to address this observation.
recommended that the nut is put back on.
F-3

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown  Question                             Observation                                                    Disposition Checklist    No.
SWEs noted that CV-31652 F/R and CV-31653 F/R are mounted to a single vertical Unistrut with just one machine screw. The machine screws are not fully                  CAP 1353368 has been initiated to evaluate this CV-31652  Comments  threaded into their associated nuts. Instead they are               observation. Additionally, WR 83878 has been approximately half threaded into the nuts. SWEs judge                       initiated to address this observation.
current configuration as acceptable for seismic loading, but full thread engagement is needed.
It appears that CV-39401 is in close proximity to or            A plant calculation evaluates the pipe stress on the touching some rigid conduits. The conduits feed              affected line. All the displacements in the calculation CV-39401     10     power to CV-39404 (12 FCU CHLD WATER SPPLY                          are well below the actual distance between the CV). During a seismic event, the valve may come into               actuator and the conduit. The configuration in the contact with the conduits.                     field is acceptable. There is no seismic concern.
Bolts along the panel bottom would be attached to the false floor. These bolts would not provide significant strength but could aid in keeping the end of the The partition wall next to E-1 is missing all six floor           partition next to the 22 miscellaneous rack from bolts. The bolts connecting the partition     wall to the    moving.      This rack is not safety related and has a gap vertical walls are in place. Is the partition wall           of 1", so there would be no impact to the rack. The inpl sCmnsertmicalwlls quaried      thes s   pttion?  wremaining                  sides of the partition door and frame are seismically qualified in this configuration?            firmly attached to the walls and would not be allowed to displace under seismic conditions. CAP 1357500 and WR 84916 were written to document and correct the configuration discrepancy.
F-4

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown      Question                            Observation                                                         Disposition Checklist       No.
On the inside of EM-B1 there is a single screw and                       Site engineering reviewed this condition, and EM-B1          11       washer missing from the left vertical support. The                 determined it is not a seismic concern. However, WR remaining two screws and washers are present.                       83653 has been initiated to correct the condition.
Regarding the light fixture, both of the bottom "S"               CAP 1352001 has been initiated to evaluate the open hooks are open. During a seismic event the light                     "S" hooks identified during these walkdowns. In MCC 1T2-               fixture may fall on to the lever of the MCC IT2 transfer               addition to this action request, WR 83556 has been XFR SW           8     switch and may trip the equipment. The light fixture is                        initiated to address this observation.
52" above the disconnect which appears to be right underneath the light fixture. The power cord is hard wired to the ceiling and appears to have some slack.
MCC XFR 1T2-SW     Comments  There near isthe foreign  material wall (an   0 ringbehind that is the red transfer in color).switch It is a 1,    CAP 1352321 foreign  material has    been during identified initiatedthese to address  the walkdowns.
housekeeping issue, and not a seismic concern.
CAP 1352001 has been initiated to evaluate the open A light fixture in the area has open "S"hook. MV-                  "S" hooks on light fixtures which have been identified MV-32145          8        32145 is not in its zone of influence, therefore no                 during these walkdowns. In addition to this action adverse seismic interaction concern                         request, WR 83556 has been initiated to address these observations.
CAP 1352001 has been initiated to evaluate the open MV-32238 MV328    7    A light fixture south                                                 "S" hookshs drn       on lightakon.I fixtures whichdiint have been   identified hsato 7but                     it is of notthe valve hashazard.
a seismic      an open "S" hook,        during these walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
F-5

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown  Question                        Observation                                               Disposition Checklist   No.
The valve bodies of MV-32381 and MV-32382 are             Plant engineering     evaluated this comment and concluded     there is no seismic hazard iperstress interaction.
MV-32381     10      approximately 1/8" apart and may interact based on          Thes liere         analyeithin a piping analysis      aalyis dsplcemnt.These pipig displacement.                          lines are analyzed    within calculation. a pipe  stress CAP 01352845 has been initiated to evaluate this The day tank foundation has eight (7/8" diameter)     observation. In addition to writing an action request, 053-321     2     anchors. One of these anchors appears to not be fully         WR 83768 had been initiated to address this seated.                                                 observation.
It was determined that this is an original construction There is a small area with concrete spalling (about 1"    defect. The condition is less than 3/8 of an inch in by 3" and 1/4" deep). It is not a seismic concern,      depth and does not require correction. It is not a seismic concern.
It is not a seismic concern, but CAP 01352373 has been initiated to evaluate this observation for potential There is an abandoned hanger rod in the ceiling (red        personnel safety when assembling scaffolds or tape on the tip) above HX.               performing overhead work. Off of this action request, WR 83651 has been initiated to address this observation.
The valve is tagged "CLOSED" with a Danger tag under a clearance order. As allowed by plant It appears that the valve CC-43-2 has a tie wrap        procedures, tie wraps are commonly used as the around it for a wheel lock.              second means when tagging out valves at PINGP by the Operations department. It is not a seismic or safety concern.
F-6

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown  Question                      Observation                                            Disposition Checklist   No.
WR 83744 has been issued to replace the missing nut. CAP 01352717 has been issued to document the There is a bolt missing in a base plate next to MCC   discrepancy. The MCC is not safety related and the 1GA BUS 1.                        missing nut will not have any effect on operability or functionality of the adjacent MCC. It also does not pose any safety hazard.
The packing eye bolt pins are commonly used by many valve companies. Some valve companies tack The yoke pins for SF-26-2 and SF-26-4 do not have a  weld the packing eyebolt to the eye bolt pin and other retaining mechanism (cotter pin, bolt, etc.).       companies use a tapered eye bolt pin to keep it secured in the eye bolt. Therefore, the eye bolts are acceptable as is and there is no seismic concern.
F-7

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNLS'         WITI-li-14OLD fflemPUBLIC B99eELOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by   Question                      Observation                                                    Disposition Checklist      No.
AUX11/SR     Comments1The drip pan beneath the 12 containment spray          CAP 01353388 has been initiated to evaluate this observation.
In addition to writing an action request, WR 83885 has been CNMT SPRAY     Cpump                  is missing a bolt on the south side.                    initiated to address this observation.
The pressure gauge wall bracket (1B351) next to         Plant engineering reviewed this observation and concluded AUX 11/12 SI1    1        electric panel JB A1813 in 125E pump room is           that the bracket is functional. This pressure gauge is non-PUMPS                missing one out of four bolts. The bolts appear to be    safety related, and was originally constructed with only three sheaore bol. Tbolts.                           The three bolts are adequate to support the seismic sheared off.                                                      load.
There were 3 plastic barrels tied with a rope to a 6"  The barrels are tied to the floor drain piping, as shown in plant AUX 11/12 SI  Comments SS pipe next to 11 RWST. It needs to be verified that      drawings. The floor drain piping is non-safety related and PUMPS SI                     isnept to           ti them to be pie.         acceptable to tie off the barrels. No action is required, because this is acceptable to tie them to this pipe.                          it is not a seismic concern.
CAP 1352001 has been initiated to evaluate the open "S" AUX 12 CHRG             The lighting fixtures in the area have open "S"hooks    hooks on light fixtures which have been identified during these PUMP                    but these are not deemed a seismic hazard.          walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
The fan coil unit cooler is not safety related, and is not directly AUX 12 CHRG                The chiller in the area has missing bolts on the      above the 12 charging pump. Therefore, there is no seismic PUMP                                         shroud.                         concern. However, WR 84671 has been initiated to address this observation on the chiller.
F-8

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report
                                -SUNS! WITHHOLD          0BIrr            PUHirL DHeIZLOUffEB Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                         Observation                                                   Disposition Checklist    No.
The 22 component cooling pump motor unit cooler is supported by rod hangers from the ceiling. This is located near the 22 component cooling pump, 6 feet above the 695' floor. This unit cooler is close to the AUX 12/22 CC            rigging I-beam on one side of 4" component cooling        The unit cooler is not safety related, so there is no seismic PUMP        4          lines on the other side, The hanger number is 2-                                   concern.
RHRA-443 and it supports the component cooling line and the valve 2ZE-3-4. Seismic movement may cause the unit cooler to bump into the I-Beam and the component cooling lines. The drain line from the unit cooler may break as well.
A top cover plate wing nut is missing from the 2RE-39 radiation monitor. There is also a loose screw on       The radiation monitor is not safety related. WR 83571 was AUX 12/22 CC Comments     the side door cover. The monitor is resting on the     initiated to replace the wing nut and tighten the loose screw.
PUMP                  floor near the wall, and is located between the 22      CAP 01352076 was initiated to document the observation.
component cooling pump and the stairs to the upper level.
Plant engineering reviewed this observation and determined that the light fixture located above VFD cabinets for 11 & 13 CHG pumps is not 1"from thecabinets, rather 1" from the conduits coming out of the top of the cabinet. The conduit AUX NORTH             The light fixture above the "VFD" cabinets for 11 and       supports were designed to Il/I criteria and the VFDs were EAST        4        13 charging pumps is close (roughly 1" gap) to the      installed seismic Il/I to prevent movement which could cause conduits running into the top of the VFDs.        damage during a seismic event. The conduit and associated cables are not expected to break from the impact of the light fixture, rather the bulb in the fixture will likely break. CAP 1352209 was previously written to evaluate changing out all fluorescent lights to a shatter resistant bulb style.
AUX NORTH             Duct tape needs to be removed from the special vent      The foreign material on the special vent line is a housekeeping EAST        7pzone                   line discussed in question 4.            issue and has no impact on the equipment. CAP 1352391 was initiated to document this observation.
F-9

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS'         WITH'I 'OLD FRlOM PUBLIC DIGGLOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                      Observation                                                 Disposition Checklist    No.
Plant engineering evaluated the two abandoned hanger rods AUX NORTH              There are two abandoned hanger rods above the          and concluded there were no seismic concerns. However, EAST        7     component cooling line with hanger rod 1-RHRH-385       CAP 01352549 and WR 83712 were initiated to remove the near MCC2K BUS 2.                       hanger rods for personnel safety reasons during scaffold construction or overhead work.
There were scaffold carts within 2" of touching the MCC 1L, Bus 2. The cart wheels are chocked but in AUX NORTH            the wrong orientation. The cart configuration allowed   CAP 1355467 has been initiated to document this condition.
EAST                the cart to slide into the MCC. The condition was fixed upon discovery. Site personnel chocked the wheels in the acceptable orientation.
CAP 1352001 has been initiated to evaluate the open "S" AUX 11 RWST     3         There is an abandoned light fixture behind the     hooks on light fixtures which have been identified during these MCG/J Bus with open "S"hooks.               walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
CAP 1352001 has been initiated to evaluate the open "S" AUX 11 RWST            There is also a disconnected light fixture chain near hooks on light fixtures which have been identified during these panel 191.                     walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
CAP 1352001 has been initiated to evaluate the open "S" AUX 11 RWST     4     There are open "S"hooks on a light fixture above the   hooks on light fixtures which have been identified during these PT-948 panel.                    walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
F-10

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI       -m WITI      ILD FROM PULi"II-*-*lUIRE II Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                           Observation                                                Disposition Checklist    No.
Terminal Box - A1749 (terminal box for high flux) is missing an anchor bolt to wall at the lower right    WR 83891 has been initiated to address the missing anchor AUX RELAY     1        corner. There are three other bolts, therefore SWEL                                    bolt.
judged that the terminal bolt is seismically anchored to the wall and is acceptable.
Per the component drawing XH-106-7271, there are only three AUX SOUTH              An anchor bolt is missing on pipe support number 1-      bolts required for this support. This was document on the as-EAST                                           CCH-31 1.                     built EC-1 7951. Calculation 1-CCH-311 documents the need for only 3 bolts. The support is operable.
AUX SOUTH              An anchor is missing on a stanchion beneath the 121      CAP 1353371 has been initiated to evaluate this observation.
EAST          EAST2      Loop Lop "A"A"Main ain Steam tea isolation islaton valve drain line.
vlvedran    lne.                                has been initiated to address this Additionally, WR 83874osrain observation.
AUX SOUTH                There is an abandoned light fixture in the overhead    CAP 1353409 has been initiated to evaluate this observation.
EAST        4         near pipe support 1-CCH-31 1. It is unattached and       Additionally, WR 83892 has been initiated to address this should be removed.                                              observation.
There are open "5" hooks on light fixtures. The light     CAP 1352001 has been initiated to evaluate the open "S" hokonlgtfxuewhchaebnidtfedurgtes AUX 112 BUS    4          fixtures could be a hazard to Bus 112, but not the     ooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has transformer.                             been initiated to address these observations.
The unit cooler in the 122 BUS room has a brace Tha unis attahed t the wl wh four base plats Oce          Plant engineering evaluated this observation and concluded AUX 122 BUS    1       that is attached to the wall with four base plates. One that the gap was not a seismic concern. Warping of 1/ inch for gap between the plate and the wall.          surface mounted base plates is allowed, per plant procedures.
F-11

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS'        wmgFlllleLB FReIV1 PUBLIG 911SISLOGURE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                       Observation                                                     Disposition Checklist    No.
The unit cooler supply and return lines (hanger        This condition was previously evaluated in a plant calculation Thenunier        supplyH
                                                 ) andretunsupprn le(angerally    which performed a determination of seismic adequacy of ZH number 1-RHRH-656) are unsupported laterally          system pressure boundary in the Event Monitoring Rooms and AUX 122 BUS             across the entire room. Ifthe line breaks during a            other locations within the plant. No additional review is seismic event, there are no floor drains in the room     required based on the identified plant documentation. There is and flooding may occur,                                           no seismic concern.
EL-28 is a non-safety related light. It is located in the train A 1    Behind the cabinet RMU2N, one wing nut holding the                         this roomis within cabinetsand would locatednt oin                                    equipmentbe AUX A E-MON emergency battery EL-28 is missing.                 impacted should the light fall during a seismic event. WR 83724 was initiated to replace the missing nut.
Molded case circuit breakers are generically considered to be non-vulnerable to contact chatter because of the significant The light fixture hanging from the ceiling is about 3"     seismic forces required to spuriously operate these devices.
the light fixmanelcturehai fom  tAny                                force imparted by the light fixture falling on the panel AUX B E-MON           to 6" from an electrical box that is connected to panel    would be less significant than the seismic motion of the panel 219. During a seismic event the fixture may hit the      itself. As the panel and breakers are designed to withstand the design basis seismic event, the small impact due to the failure of a light fixture would not affect breaker operation. It is not a seismic concern.
This condition was previously evaluated in a plant calculation If the unit cooler supply and return lines break during    which performed a determination of seismic adequacy of ZH syste pessure budaryinathEn o nitoin a                             nd a seismic event, it may result in flooding the room.
AUX B E-MON     5     There   is no floor drain in the train B event monitoring system    pressure   boundary  in the Event Monitoring   Rooms    and room. Reference hangers 2-RHRH-453, 2-RHRH-                   other locations within the plant. No additional review is 448, 2-RHRH-449, and 2-RHRH-454.                 required based on the identified plant documentation. There is no seismic concern.
F-12

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI WITI ll 1eLB                FRemPUBLleBIseLeSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                        Observation                                                Disposition Checklist     No.
Aas lihtn ixtre oen "" hok earFWH67.            CAPon1352001 hooks                has been light fixtures whichinitiated to evaluate have been             theduring identified   open these "S"
AUX DEMIN      4     The fixture is not near any equipment, so no action is walkdowns. In addition to this action request, WR 83556 has needed,                                been initiated to address these observations.
CAP 1352001 has been initiated to evaluate the open "S" AUX DEMIN            There are light fixtures with open "S"hooks near the   hooks on light fixtures which have been identified during these loop "A"main steam safety header.            walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
CAP 1353367 has been initiated to evaluate this observation.
AUX DEMIN      6     A wood 10x20" insert on the floor next to the grating        Additionally, WR 83876 was initiated to address the is a combustible.                                             observation.
This configuration does not meet the guidelines for The cable trays adjacent to the south wall house         abandoning cables. Therefore, CAP 1353415 has been AUX DEMIN      8     cables which are resting on top of, and out of, a tray initiated to evaluate this observation. Additionally, WR 83893 that is unrestrained laterally.               was initiated to correct this condition. No equipment is impacted by the loose cable.
There are open "S"hooks on the lighting in the area      CAP 1352001 has been initiated to evaluate the open "S" ThereAST4 arove open          hkisnon tseligting inher ara Th"                            hooks on light fixtures which have been identified during these AUX EAST       4      above MV-32024. This is not a seismic concern as      walkdowns. In addition to this action request, WR 83556 has the lighting will not adversely affect MV-32024.              been initiated to address these observations.
AUX EAST       8       There are two loose %"concrete anchors on the           WR 83868 has been initiated to address the observation.
bracket supporting P1-17652.
F-13

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS! - WIT-IIHLD FROeM PUOLIC DisCLOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by  Question                        Observation                                                       Disposition Checklist     No.
121 filtered water strainer adjacent to the diesel oil day tank skid has corroded anchors (wet SSCN 12 DD              environment). The corrosion is not significant and          CAP 1352851 was initiated to document this observation, and CLWP         1only   anchoragerequires of the cleaning diesel drivenand cooling re-coating.
waterThe pump          WR 83771 was initiated to address the corrosion.
also shows slight corrosion, as it is in a wet environment.
CAP 1352975 has been initiated to evaluate this observation.
TURB 11 AFWP     1There           is a missing instrument fastener  on the guard for 121 air compressor.                    Additionally, WR 83793observation.
has been initiated to address this There are open "S"hooks on the lighting fixtures              CAP 1352001 has been initiated to evaluate the open "S" near the 11 turbine driven auxiliary feedwater pump.         hooks on light fixtures which have been identified during these TURB 11 AFWP     4        The light fixtures would only swing, and would not             ooks on ligh In addition walkdowns.         tionures   thicaveben to this          identi WRdr83556thes action request,             has impact   equipment conduits. It is other not a than  nearby seismic       piping or concern.                   been initiated to address these observations.
CAP 1352961 has been initiated to evaluate this observation.
TURB11AFWP                The chain fall for 2AF01301 can potentially strike            Additionally, WR 83796 has been initiated to address this observation.
The eyewash station is adequately secured to the           Plant engineering reviewed the restraint for the water supply to TURB 12 BATT     7         wall. Water supply on the cart is secured with a          the eyewash station and concluded that the bungee cord was bungee cord.                                 an acceptable means of restraining the canister.
12 BATT    8               door pulleythe As a precaution,      "S"   hook recommend SWEs                   closing the above door 228.            CAP 1352343 and WRthis    83645   have been initiated to address observation.
F-14

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI - WIT-iI tOLD FROM PUBLIC DiSCLOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                          Observation                                                 Disposition Checklist    No.
CAP 1352001 has been initiated to evaluate the open "S" TURBEDGD-1              There Is a possible open "S" hook on a light fixture   hooks on light fixtures which have been identified during these above the diesel generator control panel.        walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
There is a gap between the base plate walls for unit       Based on the stated allowed warping of 1/4inch for surface TURB BUS 111    1     cooler. The anchor bolts seem to be tight. Will need         mounted base plates contained in plant guidance, this is to verify if this is acceptable per procedure.                          considered acceptable.
The transformer does not contain any sensitive or essential T1The back cover bolts are loose for 111M voltage       relays that might be impacted by any small vibration of the TURB'BUS 111    1                            regulator cabinet.                 panel cover. The function of the transformer is not impacted.
WR 83828 was generated to tighten the loose bolts and correct the condition. It is not a seismic concern.
A conduit   box is attached   to Unistrut, and both  While the bolt may not be fully tightened, it will ensure the box TURB BUS 111    1       screws    are loose. They are located approximately  remains attached to the strut. No equipment function will be TURBBUS11sres are floose Tyarve t             apro atey olocated       impacted. WR 83834 was initiated to tighten the conduit box to 10' from the floor and above the voltage regulator.                the strut. There is no seismic concern.
Vertical rigid conduit to box CS19148 (BUS 111            Based on a review of the vertical conduit run, the other safeguards SWGR unit cooler) and Panel 132-10             supports would take the load normally restrained by this TURB BUS 111    3         has a conduit clamp not attached to the conduit. conduit clamp. The safety functions of the equipment were not Located on column E9, it has a misplaced loose         impacted. WR 83829 was initiated to re-attach the clamp to attachment at about 10' from floor underneath duct.                                  the conduit.
The loose bolt was identified to be only on one side of the The conduit bracket attached to the Unistrut for the     clamp. The condition still had the clamp tight to the conduit, TURB BUS 111             conduit running to 480V Bus 111 and 112 control         but did not have the clamp ear tight to the strut attachment.
panel seems to be loose with a gap between the       The conduit remained restrained, and did not impact the safety bracket and the Unistrut.                function of the equipment. WR 83833 has been initiated to tighten the loose bolt.
F-15

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report 5Urbi         W I 111UL0 I HU)M p.-MULI              UIJLuLdumit Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                       Observation                                                   Disposition Checklist    No.
One of the two supports for a light fixture is loose from the wall and the upper anchor bolt for the TURB BUS 111    3      support is not fully engaged. SWEs judged that the          WR 83834 has been initiated to address this observation.
light fixture will remain in place, but recommend that the bolt be tightened.
The conduit support on top of the RMU 213 cabinet,            Based on the small load compared to the capacity of the BUS111ondut    s 3 onthe      r os bof tp thet RU 23 cgabiet,              anchors, there is no impact on the equipment's safety TURB BUS 111    3     on the west wall, has a bolt that is not fully engaged. functions. WR 83836 was generated to tighten the bolt on the The support is located about 10' from floor level,.odi                                   spot conduit support.
CAP 1353147 was initiated to document the cable not configured per plant engineering manual. Additionally, WR TURB BUS 111          An electrical wire is tie wrapped to the conduit above        83841 was initiated to place the abandoned cable in the door 54, next to an electrical cable tray.       correct configuration. The strength of the tape is considered to be capable of restraining the small coil of wire, and it does not impact any equipment functions. There is no seismic concern.
A light fixture may come in contact with the flexible TURB BUS 111    7     conduit going into the 11 A transformer. It is located     CAP 1353277 has been initiated to evaluate this observation.
on top of 11 A transformer with only 2" of clearance.
The emergency light EL15, located on the safety            The one remaining tie rod will ensure the battery does not related block wall number 26 and above the test           come out of the tray. There is no impact to the equipment TURB BUS 15     1     station for the breaker cabinets, has a missing wing     function based on this condition. However, CAP 1352966 was nut on the one side for the threaded rod holding         initiated to document the condition of the light. Additionally, EL15 on the wall bracket.                 WR 83790 has been initiated to replace the missing wing nut.
F-16

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS**1-    W KI lll I.TI    I. FRnE,,M   PULI     DSll*lI.BLO.SURE*,     l-Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                     Observation                                                        Disposition Checklist    No.
A large size flex conduit with a metal end is held in place only with tie wraps. Ifthe tie wraps failed      The abandoned cable was walked down and its installation TURB BUS 15     4        under seismic loading, it is possible that the flex    compared to plant procedures. The cables are marked and conduit would snap back to an uncoiled position and                   coiled in accordance with this instruction.
may impact the side of the RMU-1 13 cabinet.
The collar protects an expansion joint for the bus duct. The The bus duct to breaker 15-3 (on the top of breaker         expansion joint consists of a flexible material which is TURB BUS 15     8      15-3) has a flange connection that has its east side   adhesively attached to the two sections. A collar is placed over one and a half inch lower than its west side.       this joint to provide physical protection and is not required to maintain integrity of the joint. There is no seismic concern.
Above breaker 15-6, the conduit support attachment       CAP 1353223 has been initiated to evaluate this observation.
TURB BUS 15     8       seems to be loose. It is connecting the conduit to       Additionally, WR 83835 has been initiated to address this the Unistrut.                                                      observation.
above     CAP 1352001 has been initiated to evaluate the open "S" TURB ROD              There is an openASl hook for the light fixtureoom      hooks on light fixtures which have been identified during these DRIVE                terminal box  As723  for  non-safety related room     walkdowns. been Ininitiated additionto toaddress this action theserequest, cooling. There is no seismic interaction concern.                                                               WR 83556 has observations.
The trapeze that is not physically fastened is at the far end of Supply and return lines to the MTR 154-46 11 rod       the evaporator unit, which does not contain any equipment of TURB ROD             drive air handler blower have no lateral restraint (rod    notable weight in relation to the remaining equipment. It is DRIVE       5     hung). The blower also has no lateral restraint (three    determined that if the end trapeze support were to become rod trapeze hangers). There may be a potentially          dislodged, the remaining supports would be capable of large movement at the blower,                  supporting the load of the unit and this does not create a seismic interaction concern.
F-17

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI      - WlT*lII IIIl,     FROM PULI/ DIsCLOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by  Question                       Observation                                                    Disposition Checklist     No.
The switch is connected to rigid conduit. CS-1 9543 is part of an active engineering change. As a result, the switch has not CIt appears that CS-i 9543 is not anchored to the wall,        been classified, and the system is not yet turned over to 1There are four external holes in the bracket for      Operations. Additionally, the SWEs judge that the length of PUMP         1asthnere         arour externalers ihe brakent. frigid                  conduit   currently holding  CS-1 9543 in place is an Pfasteners but no fasteners are present.        acceptable   seismic   restraint with respect to seismic interaction of the switch with other pieces of equipment in its vicinity. It is not a seismic concern.
Two drums are present under the component cooling        CAP 01353280 has been initiated to evaluate this observation.
AUX 11/21 CC            heat exchanger to collect leak off. The drums are       In addition to writing the action request, WR 83853 has been PUMP               poorly tied off by rope to a small copper drain line for                initiated to address the observation.
the 11 component cooling pump unit cooler.
One of the two floor brackets for the Unistrut that     CAP 1353327 has been initiated to evaluate this observation.
AUX 11/21 CC    8     supports the component cooling motor power cables         In addition to writing the action request, WR 83865 has been PUMP               appears to be bent and the anchor is loose. There is                    initiated to address the observation.
a tygon tube wedged under the corner.
There are lighting diffusers tied off to the support AUX CONTROL            grid. Unit 1 and Unit 2 "C" panels have a fluorescent    CAP 01352209 has been initiated to evaluate this observation.
ROOM                light fixture on chains too close (within 1"-2") to the panel.
AUX CONTROL            The trash can next to the racks R23, R24, R13, and            The trash cans are located next to non-safety related 7       R1 4 are immediately adjacent to the racks, which        miscellaneous racks. This condition is acceptable per site violates the seismic housekeeping procedure.               procedure guidance. There is no seismic concern.
CAP 01352001 was initiated to evaluate this observation. Off AUX CONTROL             There were several open S-hooks on light fixtures         of CAP 01352001, WR 83556 was initiated to address this ROOM                           (nearest the panel in most cases).                                        observation.
F-18

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNS' - WITHHOLD FRO            .        PUBLIC DISCLOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                       Observation                                                  Disposition Checklist    No.
Step   ladder adjacent to racks R23, R24, R13 and           The trash cans are located next to non-safety related AUX CONTROL     7         R14 is also too close to the racks. The wheels        miscellaneous racks. There is no impact to the equipment.
ROOM                                                                      However, all wheeled carts should be chocked. The FIN team should be chocked.                                has been notified to chock the wheels.
CONTROL AUX ROOM                Unit 1 and Unit 2 "E"panels have side panels that    CAP 01352102 has been initiated to evaluate this observation.
have slid out of position. This is a housekeeping      In addition to writing an action request, WR 83579 has been issue and not a seismic concern,                          initiated to address this observation.
The fire extinguisher is not located near equipment that could AUX CONTROL  Comments  Fire extinguisher bracket 224 has a rotated bracket         be impacted if the fire extinguisher came free from its Room                    (into the insulation) and should be repaired.        mounting bracket. WR 83584 was written to replace the mounting bracket.
The filing cabinets adjacent to the main control board      This condition does not meet the seismic housekeeping AUX CONTROL  Comments     in both Unit 1 and Unit 2 are close to the mainto ROOM                                    control boarde                        evaluate this observation. There is no adverse seismic concerns.
The drawers have a small mass and are located on the floor of the control room. The aspect ratio was determined to be AUX CONTROL  Comments  A set of drawers next to the in-core logic selection   greater than two and it will not slide across the carpeted floor.
ROOM                         switch panel are close to the panel.         If the drawers did slide out in a seismic event, they would not impact any equipment. Therefore, there is no seismic concern.
F-19

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI         WITHHOLD FROM PUBICiG DIVCLOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                         Observation                                                    Disposition Checklist    No.
The cart adjacent to the Protection System IIIsupports a computer and monitor. The computer and monitor are securely fastened to the cart and the cart has been secured per procedures, so there is no seismic concern. However, the top The cart adjacent to the Protection Systems IlI and     of the monitor slightly exceeds the aspect ratio defined per the CONTROL AUX ROOM                the cart adjacent to cabinets RPI-1, -2, and -3 in Unit  seismic housekeeping procedure. CAP 1357686 was initiated Comments ROOM 1 are close to the equipment. The chain is not used      to address the observation.      Thearea.
in the  cart will not affect equipment to restrain the carts.                                                  h As for the cart adjacent toi RPI-1,   ra
                                                                                                                        -2, and -3, plant engineering noted that one restraint is not currently being used. The cart for this restraint is secured in three other locations and by a wheel chock. The cart is sufficiently restrained and will not affect equipment in the area. It is not a seismic concern.
The Unistrut support for panel 1 LPB-4 and 1 RPB3 seems to have no anchor bolts on one of the legs.
There are anchor bolts for the other leg. The leg might have poor quality fillet welds. 1LPB-4 is HX                 mounted on a Unistrut frame that also supports          CAP 01352426 has been initiated to document the missing AUE        1           1RPB3 and the three transformers above. The           anchors and WR 83676 was initiated to install anchors for the Unistrut frame is clip angled to a structural column in                       leg that's missing anchors.
three places and is welded to an I-beam at both ends. Ifthere is no fillet weld on the left leg, the frame is still seismically adequate and will not pry off the wall and impact MCC 1GA Bus 1.
CAP 01352415 has been initiated to evaluate the observation.
AUX SP HX   Commen      The cover plate on the end of the MCC GA BUS 2               In addition, WR 83671 has been initiated to address the 122     Ccabinet                            is missing a bolt.                                             condition.
CAP 1352001 has been initiated to evaluate the open "S" AUX SFP HX  Comments      There are open "S"hooks for lighting fixtures in      hooks on light fixtures which have been identified during these 122                  some of the locations in the heat exchanger area.       walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations.
F-20

Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI         WITHI-IOLD ,0,o16                PUBLIC DISC.LOSURE                    -
Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                       Observation                                                      Disposition Checklist    No.
AUX SFP HX  Comments A single light fixture has duct tape and it needs to be          CAP 1352391 has been initiated to address this foreign 122                             removed for housekeeping.                                                  material.
The 122 spent fuel pool heat exchanger component                  The devices are shown as installed on the pipe with a AUX SFP HX  Comments         cooling inlet line has two ultrasonic flow             mounting strap kit per the described field installation in the 122                measurement devices strapped to the pipe with a                 vendor technical manual. The mounting is considered metal strap.                                   acceptable and will have no seismic impact.
AUX 122 SFP HX  Comments  There   is scaffolding exchanger     122. Onetiedoftothe thescaffold spent fuel  pool heat couplers  is   CAP 1352559 has been initiated to evaluate this observation.
within 1"of touching CC-43-7.
There are stored Operations test equipment above               WR 83723 was written to secure the instrumentation and AUX SFP PUMP           the electrical cabinet 1RP6 next to the 121 spent           cabling in accordance with site procedures. CAP 1352586 was 122        7        fuel pool tiedpump.
aroundAlso,   there are loosely                the piping    nextelectrical to the 184wires entry    written to address the control long term   equipment configuration issue.
door.
A 3" copper line is running along the ceiling above AUX SFP PUMP             121 and 122 pumps. It has beam clamps in the               CAP 1352733 was written to document this observation, and 122                 same direction and a broken hanger rod. This                 WR 83747 was initiated to re-attach the broken support.
configuration may be vulnerable in a seismic event.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report
                               -SUNSI WITHHOLD FROM PUBLICG DISILOZUflE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                       Observation                                                        Disposition Checklist    No.
The stands are located in the southeast corner of the fuel handling building next to two heating system lines. The stands are not secured, and could move during a seismic event. They There are four maintenance stands (CTV upper                  may cause failure of the heating lines. The area that the AUX SFP PUMP Comments   frame stands) about 5' high with four legs. One of           stands are located is considered a harsh area, as there are 122               the cabinets is next to the steam heating line, and it      four high energy line break (HELB) doors that are designed to is not tied down to any structural member.              discharge steam from a HELB into this area. The amount of steam coming through these doors into the fuel handling area from a HELB would bound a break from these heating system lines. There is no seismic concern.
The 121 SFP Pump (Component ID045-101) is not safety related. Per the vendor manual for the pump, the oil glass is The radiation protection stands with signs for             for level control only. The rest of the constant level oiler is AUX SEP PUMP            contaminated pool pump and areacouldare  close to the 121 the spent fuel   steel and will maintain oil in the reservoir if the glass portion is 122     Comments                           potentially impact      glass oil   lost. In the event the glass were broken, the condition would bubbler on the pump. One stand is not rolled, and           be noticed by Operators on routine rounds prior to oil level in the other stand is not taped.                  the bearing housing reaching an unacceptably low level. It is not a seismic concern.
There is lead radiation protection shielding chained AUX SFP PUMP Comments to the wall near the spent fuel pool skimming pumps.         CAP 1352586 has been initiated to evaluate this observation.
122                Ifthe shielding falls, ittubing.
could potentially damage the       WR 83641 has been initiated to improve the shielding tie-off.
The valve is tagged "CLOSED" with a Danger tag under a AUX SP PUMP  Comments  A fire protection valve near the ceiling is using a tie    clearance commonly order.
used asAsthe allowed secondby means plant procedures, when taggingtie wraps  are out valves 122     Cwrap                  to hold the valve handle in position.          at PINGP by the Operations department. It is not a seismic or safety concern.
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Prairie Island Nuclear Generating Plant - Unit 1 Seismic Walkdown Submittal Report SUNSI - WIT*HHLD FROM PUBLIeC DISCLOSURE Table F-2: Disposition of Area Walk-By Observations Area Walk by Question                    Observation                                 Disposition Checklist    No.
The 121 spent fuel pump has a cover between the AUX SFP PUMP Comments  motor and the pump that is tied with two metal tie    It is not a seismic concern.
122              wraps. This cover is a radiation protection shield and has no impact on the pump.
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