Text

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 Fukishima Dai-ichi Accident
	ML12334A470
Person / Time
Site:	Prairie Island
Issue date:	11/26/2012
From:	Jeffery Lynch; Northern States Power Co, Xcel Energy
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	L-PI-12-109
	Download: ML12334A470 (401)
	v • d • e

{{#Wiki_filter:11UNGI WITI 111911:1 FROM rUo~ic, DseLesURE 0 XcelEnergy@ Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089-9642 NoV 2 6 2012 L-PI-12-109 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. 50-306 Renewed Facility Operating License No. DPR-60 PINGP Unit 2 - 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 FederalRegulations50.54(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) 2R29 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. 2R29

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 ame s .L ync h Site Vice President, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota Enclosure cc: Administrator, Region III, USNRC Director of Nuclear Reactor Regulation (NRR), USNRC NRR Project Manager, PINGP, USNRC Senior Resident Inspector, PINGP, USNRC

ENCLOSURE PRAIRIE ISLAND NUCLEAR GENERATING PLANT - UNIT 2 NTTF RECOMMENDATION 2.3 - REDACTED SEISMIC WALKDOWN REPORT (316 Pages Follow)

Prairie Island Nuclear Generating Plant - Unit 2 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 Seism ic Licensing Basis .............................................................................................. 2-1 2.1 Overview ............................................................................................................... 2-1 2.2 Design Basis Earthquake (DBE) ............................................................................ 2-1 2.3 Design of Seismic Category I SSCs ...................................................................... 2-1 2.3.1 Summary of Seism ic 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 5 Seismic 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

Prairie Island Nuclear Generating Plant - Unit 2 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 W alk-bys ........................................................ 5-7 6 Licensing Basis Evaluations .................................................................................. 6-1 7 IPEEE VulnerabilitiesResolution 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 Disposition of Seismic Walkdown Observations................................................. F-1 ii

Prairie Island Nuclear Generating Plant - Unit 2 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 2 SW C CAP Status ........................................................ 5-8 Table 5-3: Prairie Island Unit 2 Area W alk-By CAP Status .......................................... 5-10 Table 7-1: Prairie Island IPEEE Seismic Vulnerabilities .................................................. 7-2 Table A-1: Prairie Island Unit 2 - Base List 1 ................................................................ A-2 Table A-2: Prairie Island Unit 2 - SW EL 1 .................................................................... A-22 Table B-i: Prairie Island Unit 2 Completed SW Cs ....................................................... B-1 Table C-1: Prairie Island Unit 2 Completed AW Cs ...................................................... C-1 Table D-1: Summary of Inaccessible Equipment .............................................................. D-1 Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 2 .............. E-6 Table F-i: Disposition of Seismic W alkdown Observations .................................................... F-2 Table F-2: Disposition of Area W alk-by Observations .......................................................... F-9 iii

Prairie Island Nuclear Generating Plant - Unit 2 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 2 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-up activities required to complete the efforts to address Enclosure 3 of the NRC 10 CFR 50.54(f) letter include inspection of 30 items deferred due to inaccessibility or electrical cabinet internal inspections. Area Walk-Bys will be completed, as required, during these follow-up activities. v

Prairie Island Nuclear Generating Plant - Unit 2 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 2 Seismic Walkdown Submittal Report 1.3 APPROACH The EPRI Seismic Walkdown Guidance (Reference 1) is used for PINGP Unit 2 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 2 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 but 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; 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 Full descriptions 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 are 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, GeneralDesign Criteriafor Structures
USAR Section 12.2.1.4.3, StructuralDesign 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 2 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 ifthe equipment is adequate to withstand the required load.

2-2

Prairie Island Nuclear Generating Plant - Unit 2 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 2 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 Concrete 1 Institute (ACI) 318-71, B (Reference 14) 77, 83 2 ACI 301 Specifications for Structural Concrete for Buildings (Reference 15) Recommended Practice for ANSI Al 45.1 Concrete 3 ACI 37 Formwork (Reference 16) Recommended Practice for Hot ANSI A170.1 Weather 4 ACI 305 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) 7 ACI 315 Manual of StandardStructures Concrete Practice for Detailing20) Reinforced (Reference Recommended Practice for Cold Weather Concreting 8 ACI 306 (Reference 21) Recommended Practice for Consolidation of Concrete 9 ACI 309 (Reference 22) 10 ACI 308 Recommended Practice for Curing Concrete (Reference 23) Recommended Practice for ANSI A146.1 Evaluation 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 14 Committee 304 Placing Concrete by Pumping Method (Reference 27) 15 AISC-69,78 Specification for the Design, Fabrication, and Erection of Structural Steel for Building (Reference 28) Structural Welding Code (Reference 29) 16 AWS D1.1 2-4

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table 2-1: List of Codes, Standards, and Specifications Specification Specification or Reference Standard Title Number Designation ASME Boiler & Pressure Vessel Code, Section III (Reference 30) ASME-1971, S73 Division 1, Subsection NE ASME-1974, S75 Division 1, Subsection NF 17 Division 2, Proposed Standard Code for Concrete Reactor ASME-1973 Vessels and Containments Issued for Trial Use and Comments ASME-1980 Division 2, CC 6000 ASME-1 992 1992 Addenda, Division 1, Section XI, Subsection IWL, AIWE American Public Test Methods Sulphides in Water, Standard Methods for 18 Health Assoc. the Examination of Water and Waste Water (Reference (APHA) 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 2 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 Equipment Neeleient Plant Seismic Walkdown Licensing IPEEE Peer Name Selection Basis Engineer Operations Engineer Reviewer Reviewer Reviewer (SWE) B. Lory (S&A) X X W. Djordjevic (S&A) X D. Zercher (NSPM) X D. Cherlopalle (NSPM) x XO) K. Kriesel (NSPM) X X(3) S. Seilhymer (NSPM) X X1) P. Valtakis (NSPM) X X T. Bacon (S&A) X(2) M. Etre (S&A) X D. Moore X 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 2 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: Bachelor 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 3-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report

   "  Education: BSCE, Michigan Technological University
   "  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. He 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 3-3

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Classroom Instructor positions at PINGP. Has a total of 30 years of nuclear experience, with 18 years of experience as a Senior Reactor Operator. 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 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. 3-4

Prairie Island Nuclear Generating Plant - Unit 2 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 2 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 is the PINGP Unit 2 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.

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 2. 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 Required Items 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 SQUG 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): 4-1

Prairie Island Nuclear Generating Plant - Unit 2 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 2 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 4-3

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report C. Reactor Coolant Inventory Control 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-2 of Appendix A of this report contains a legend to correlate this number to a specific safety function. 4.2.2 SWEL 2 - Spent Fuel Pool Related Items The PINGP Unit 1 seismic walkdown submittal report discusses and identifies the equipment selected for SWEL 2. Therefore, this PINGP Unit 2 seismic walkdown submittal report does not contain a discussion of the SWEL 2 walkdowns or equipment selection process. 4-4

Prairie Island Nuclear Generating Plant - Unit 2 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 and Area 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 64 of the 94 components identified on the PINGP Unit 2 SWEL 1. 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.

5-1

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Seismic Walkdowns are deferred for the remaining 30 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 2 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 be 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 94 25 35 23 (14 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 2 Seismic Walkdown Submittal Report Detailed guidance for evaluating each of these types of seismic spatial interactions is described in Appendix D, Seismic Spatial Interaction,of 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. 5-4

Prairie Island Nuclear Generating Plant - Unit 2 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 in 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 provides a summary of issues identified during the equipment Seismic Walkdowns. The equipment Seismic Walkdowns resulted with a total of 13 concerns identified and each of these was entered into the site's Corrective Action Program (CAP). There was one observation identified during the seismic walkdowns which is in the work management process for resolution, and is conservatively reported in this report for tracking purposes. 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 2. 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 pprocedures (Reference 38).

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Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report

General plant conditions were inspected to verify compliance with site procedures (Reference 39).

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 5-6

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report 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:

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 bus bars, which pass between the two, to short out against the grounded bus duct surrounding the bus bars 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 during Area 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, 24 issues were identified during the Area Walk-Bys and entered into the site's CAP. One observation identified during the Area Walk-Bys is being resolved in the work management process, and is conservatively reported in this table for tracking purposes. No potentially adverse seismic conditions were identified that resulted in a seismic licensing basis evaluation. 5-7

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table 5-2: Prairie Island Unit 2 SWC CAP Status Equipment Description of Issue CAP# Status ID The light bar is being held by two "S" hooks. One of the "S" hooks is open. If the light bar were to swing, it Closed to CAP 245-392 might hit the pump. Although this potential seismic 1351884 1352001 and WR interaction might be credible, it is not significant since 83533. the pump would still be able to perform its intended safety function. Both of the "S" hooks holding the light fixture above the 22CC pumps are open. The power cord is taped 245-122 and seems to be able to support the light fixture. The 1351916 Closed to WR 83541. light fixture is in contract with the "L"column and it is possible the light may break during seismic motion. The CC Pump collection barrel is tied with rope to the Closed to WR 83539, 245-122 Unistrut. The barrel has a note attached that 1351901 which is complete. references CAP 1317022 and WO 74792. There is duct tape on the bottom of the rigging beam 245-122 above the CC pump. It is a housekeeping issue, and 1351913 Closed. not a seismic concern. Multiple open "S" hooks for lighting fixtures were Open - Work identified during the Seismic Walkdowns. An action Request (WR) 84434, Multiple request was initiated to track all of these occurrences 1352001 83556, and 83533 and perform an extent of condition. See Appendix F are associated with for all open "S" hook observations, this observation. There are missing cap nuts on the south side of the Closed to WR 84674 55320 cabinet. This is a maintenance issue and not a 1356613 and WO 467408. seismic issue. The cabinet labeled "clean chemical handling 2LT-921 equipment" (36" x 24" x 75" high) is stored about 4" 1351219 Closed. from the level transmitter. B-2 Duct tape was identified behind Panel E-2 at about 8'1352954 Closed to WR 83785, high between the CVCS letdown and RHR labels. which is complete. There is a bent back cover plate for the CVCS B-2 letdown monitor. It is located at about 10' high near N/A WR 84959 initiated. the CVCS letdown label. The cover plate is non-structural and is not an adverse seismic condition. 5-8

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table 5-2: Prairie Island Unit 2 SWC CAP Status Equipment Description of Issue CAP# Status ID In addition to the foreign material, the pig tail of a E-2 cable with a multipin connector was found stored on 1357129 Closed to WR 84837 top of the box. It is not a seismic concern, but it is and WO 467495. recommended that the site evaluate the condition. Open - WR 83890 EM-B2 A mounting screw was discovered missing inside the 1353340 and WO 465970 are back of this panel in one of the electronic modules. associated with this observation. The conduit rod stirrup below the valve is missing one Closed to WR 84626 MV-32384 bolt. This is not a seismic issue for the valve, but 1356520 and WO 467183. requires evaluation. Closed to WRs PNL 22 The counterweight of the door pulley system may 1352343 83645, 83646, and strike panel PNL 22. WOs 465563, 465564. Plant engineering investigated this observation and determined that the fourth bolt is visible behind the spring-loaded nut holding the panel enclosure to the PNL 261 Unistrut. Panel 261 therefore has four mounting bolts 1352221 Closed to WR 83615 connecting it to the concrete wall, and no concern is and WO 465451. present. CAP 1352221 was initiated to document this observation. WR 83615 was also initiated to perform any field work required by CAP 1352221. 5-9

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 2 Area Walk-by CAP Status Area Walk-by Description of Issue CAP# Status Designation Itappears that CS-1 9543 is not anchored to the wall. Closed to WR There are four external holes in the bracket for 1353280 83853, which is fasteners but no fasteners are present. complete. Two drums are present under the component cooling heat exchanger to collect leak off. The Closed to WR drums are poorly tied off by rope to a small copper 1353327 83865 and WO drain line for the 11 component cooling pump unit 465979. cooler. A top cover plate wing nut is missing from the 2RE-39 radiation monitor. There is also a loose screw on 2 the side door cover. The monitor is resting on the 1352076 Closed to WR floor near the wall, and is located between the 22 83571. component cooling pump and the stairs to the upper level. Next to the pressure gauge P1-18249, there is a portable cord reel supported on the wall by a pin. Since the cord is free to rotate, the reel could swing Closed to WR 3 in a seismic event and potentially impact the valve 1352923 83779 and WO and tubing of the pressure gauge. Work request has 465931. been initiated to either secure the portable cord reel from movement or re-locate. Radiation monitor DRM-2 is attached magnetically to electrical panel 2R1A54. The magnetic base may not be strong enough to prevent the monitor from 1352769 is open, falling and impacting the pressure gauge P1-18249 1352769 but CAP 1352792 is or associated tubing. 2 CAP were issued - one to & closed. The evaluate long term out of service time for the 1352792 monitor was radiation monitor and the second one to evaluate relocated and any potential procedures deficiencies in the secured. deficiencies in the installation of portable radiation monitors. 5-10

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 2 Area Walk-by CAP Status Area Walk-by Description of Issue CAP# Status Designation The guard cover on 22 safety injection (SI) pump coupling has two loose nuts for the bracket attached to the foundation of the SI pump. The bolts are Closed to WR 4 effective to withstand seismic loads. The coupling 1352699 83742, which is guard will remain in place during a seismic event. It complete. is seismically acceptable, but the loose bolts should be tightened. An oil can is sitting on the pipe support for MV- Closed to WR 4 32185. There was no holder found for storing the 1352727 83746 and WO can, which is against the site's seismic 346607. housekeeping procedure. A steam heating line was found tie wrapped to the Closed to WR line that includes the 2-RCCH-538 support. The tie 1352959 83786. This is wrap is a poor housekeeping practice, and should be complete. removed. The wrench hanging from 2MS-27-2 is a potential hazard to SOV-33266 and SV-33264. The Closed to WR 9 recommendation is to re-locate the wrench to a 1352195 83607. height lower than the SOV elevation, so that is no longer a potential hazard. The chain fall located near LFT-495 should be Closed to WR 9 restrained so that it doesn't have the potential to 1352586 83723. impact the transmitter. Multiple open "S"hooks for lighting fixtures were Open - WR 84434, identified during the Seismic Walkdowns. An action Open6- WR 834, Multiple request was initiated to track all of these 1352001 83556, are and 83533 associated with occurrences and perform an extent of condition. See Appendix F for all open "S" hook observations. After further evaluation by plant engineering, it was determined that the safety classification of this indicator may not meet the requirements of the plant's equipment classification procedure. PI- 1352398 Open. 20 11979 is currently classified as non-safety related but it may need to be classified as safety related. CAP 1352398 has been initiated to evaluate the safety classification of the starting air indicator. 5-11

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 2 Area Walk-by CAP Status Area Walk-by Description of Issue CAP# Status Designation The starting air indicator (PI-1 1979) for the 22 diesel driven cooling water pump has a bracket with provisions for four screws. However, only two bolts Closed to WR 20 are attaching the indicator to the concrete wall. CAP 1351936 83545 and WO 1351936 has been initiated to evaluate this 466341. observation and WR 8354 was initiated off of this action request to correct the condition. 23 The guard to belt drive on 121 instrument air (013- 1352975 Closed to WR 011) is missing two anchor bolts. 83793. Chain fall for 2AF-13-1 is within eight inches of Closed to WR 23 interacting with MCC 1A Bus 1. The chain fall needs 1352961 83796. to be restrained. The counterweight "S" hook is also open and the Closed to WR 26 counterweight could fall to the floor or against PNL 1352343 83645 and WR 22 83646. The clamp of the conduit going into Panel 227 is Closed to WR 24 loose. The clamp bolt is loosely attached to the 1353370 83887, which is Unistrut location of the clamp, which is 6ft above the 157 88,wii floor, complete. Closed to WR 25 The 123 instrument air compressor guard is missing 1352154 83594 and WO a few anchors. 465439. The fire extinguisher (301) is on a short bent 25 bracket. It is recommended that the bracket gets 1352094 Closed to WR bent back to normal (horizontal) position or is 83577. replaced. Duct tape is preventing a chain for a fluorescent light fixture from making contact with a conduit. This type Open. WR 83605 is 27 of restraint is not necessary and should be removed. 1352191 also associated with It is a housekeeping issue and not a seismic this issue. concern. 5-12

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table 5-3: Prairie Island Unit 2 Area Walk-by CAP Status Area Walk-by Description of Issue CAP# Status Designation There are lighting diffusers tied off to the support 29 grid. light Unit 1 and fixture Unit 2 too on chains "C"close panels(within have a1 "-2") fluorescent to the 1352209 Open. panel. Unit 1 and Unit 2 "E"panels have side panels that Closed to WR 29 have slid out of position. This is a housekeeping 1352102 83579, which is issue and not a seismic concern, complete. 29 Fire(into extinguisher bracketand the insulation) 224should has aberotated bracket repaired. N/A WR 83584 initiated. The filing cabinets adjacent to the main control 29 board in both Unit 1 and Unit 2 are close to the main 1357683 Open. control board. The cart adjacent to the Protection Systems III and 29 the cart adjacent to cabinets RPI-1, -2, and -3 in Unit 1357686 Open. 1 are close to the equipment. The chain is not used to restrain the carts. 5-13

Prairie Island Nuclear Generating Plant - Unit 2 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 2 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) as well as 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 that were 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 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 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 PINGP Unit 2 outage in December 1998 and 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 PINGP 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 PINGP IPEEE have been 7-1

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report resolved. Aside from this completed work, no additional procedure changes or training is required to close the identified outliers. 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 1 R20 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 that the airline and solenoid valve are identified as an outlier because a minimum of two inches away from 1R20 refueling CV-39401 contact with surrounding conduits existing conduits. Also, the electrical 1 ing C0 cou rak wthesuounoidin cta junction box associated with the outage in May could break the solenoid tap solenoid valve for CV-39401 was of 1999 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 2 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, PeerReviews, 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 2 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 (not used).

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 (not used).

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 Pursuantto Title 10 of the Code of Federal Regulations 50.54(f) RegardingRecommendation 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. 9-1

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report

9. Not used.

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 Practice for ANSI A145.1 Concrete Formwork

17. ACl 305, Recommended Practicefor Hot ANSI A 170.1 Weather Concreting

18. ACl 211.1, Recommended Practicefor Selecting Proportionsfor Normal Weight Concrete

19. ACI 304, Recommended Practicefor Measuring,Mixing, Transporting,and placing concrete

20. ACI 315, Manual of StandardPracticefor Detailing Reinforced Concrete Structures

21. ACI 306, Recommended Practicefor Cold Weather Concreting

22. ACl 309, Recommended Practicefor Consolidation of Concrete

23. ACl 308, Recommended Practicefor Curing Concrete

24. ACI 214, Recommended Practicefor ANSI A 146.1 Evaluation of Compression Test Results of Field

25. ACI 311, Recommended Practice for Concrete Inspection

26. ACI 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 StructuralSteel 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 9-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report ASME-1992 1992 Addenda, Division 1, Section XI, Subsection IWL, IWE

31. American Public Health Assoc. (APHA) Test Methods Sulphides in Water, StandardMethods for the Examination of Water and Waste Water

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 StructuralConcrete and StructuralSteel During ConstructionPhase of Nuclear Power Plants

35. CRD, Chief of Research and Development Standards,Departmentof 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 NuclearSafety 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 2 Seismic Walkdown Submittal Report A Equipment Lists Appendix A contains the equipment lists that were developed as part of the equipment selection for the SWEL. Note that the Base List 2 and SWEL 2 associated with the spent fuel pool equipment are not included in this report, since they are included as part of the PINGP Unit 1 seismic walkdown submittal report. The following contents are found in Appendix A: Table A-i, Prairie Island Unit 2 - Base List 1 ....................................................... A-2 Table A-2, Prairie Island Unit 2 - SW EL 1 .......................................................... A-22 A-1

Prairie Island Nuclear Generating Plant - Unit 2 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. 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 ." Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 17705 22 AFP LO SUCT PRESS TRIP PS 17778 21 AFP LO DISCH PRESS TRIP PS 17779 21 AFP LO SUCT PRESS TRIP PS 31060 22 AFWP MN STM THTL CV 31230 2 REAC CLNT LOOP PRZR LTDN LN ISOL CV A 31234 2 REAC CLNT LOOP PRZR PWR OPRTD RLF CV A 31279 2 REAC CLNT LOOP PRZR LTDN LN ISOL CV B 32019 LOOP A MN STM TO 22 TD AFWP MV 32020 LOOP B MN STM TO 22 TD AFWP MV 32046 21 SGB ISOL MV 32147 21 FC CLG WTR RTRN ISOL MV A 32148 21 FC CLG WTR RTRN ISOL MV B 32153 23 FC CLG WTR RTRN ISOL MV A 32154 23 FC CLG WTR RTRN ISOL MV B 32194 2 REAC EXCS LTDN LINE ISOL MV A 32210 2 REAC EXCS LTDN LINE ISOL MV B 32247 22 TD AUX FW TO 22 STM GEN MV 32248 21/22 AUX FW TO 21 STM GEN ISOL MV 32249 21/22 AUX FW TO 22 STM GEN ISOL MV 32334 21 AUX BLDG CLG WTR RTRN HDR ISOL MV 32383 21 AFWP DSCH TO 21 STM GEN MV 32384 21 AFWP DSCH TO 22 STM GEN MV 32386 21 FC CLG WTR INLT ISOL MV 33251 21 REGEN HT EXGR CHG LN OUTL SV 33258 21 LOOP A MN STM HDR SV A 33259 21 LOOP A MN STM HDR SV B 33260 21 LOOP A MN STM HDR AIR EXHT SV A 33261 21 LOOP A MN STM HDR AIR EXHT SV B 33263 22 LOOP B MN STM HDR SV A 33264 22 LOOP B MN STM HDR SV B 33265 22 LOOP B MN STM HDR AIR EXHT SV A 33266 22 LOOP B MN STM HDR AIR EXHT SV B 33490 2 REAC CLNT LOOP PRZR LTDN LN ISOL SV 33491 2 REAC CLNT LOOP PRZR LTDN LN ISOL SV 2 A-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 33492 21 MD AUX FW PMP RCRC/LUBE OIL CLG SV 33493 22 TD AUX FW PMP RCRC/LUBE OIL CLG SV 33498 2 DSL GEN RM OUTS AIR B TRN DMPR SV 33695 21 CLASS I ROOF EXHT FAN DMPR SV 33696 21 SCVNG & COMTN AIR DMPR SV A 33764 2 REAC CLNT LOOP PRZR PWR OPRTD RLF VLV A SV 33829 21 SCVNG & COMBTN AIR DMPR SV B 37415 21; 23 FCU CLG WTR SUPPLY SV 37423 21; 23 FCU CLG WTR RETURN SV 50000 D5 DSL GEN BENCHBOARD 50200 D5 DSL GEN VERTICAL PANEL 55320 D5 DSL GEN ENG 1 AUX DESK 55420 D5 DSL GEN ENG 2 AUX DESK 55820 D6 DSL GEN ENG 1 AUX DESK 55920 D6 DSL GEN ENG 2 AUX DESK 60000 D6 DSL GEN BENCHBOARD 60200 D6 DSL GEN VERTICAL PANEL 70350 22 DD CLWP LCL PNL 053-322 22 COOLING WATER PUMP DIESEL OIL DAY TANK 2 CRDM/REG 5KVA SOLA REGULATOR 2 CRDM/XFMR CRDM MAIN CONTROL TRANSFORMER 201/XFMR 201 TRANSFORMER 202/XFMR 202 TRANSFORMER 21 AUX FW PUMP 21 AUXILIARY FEEDWATER PUMP MOTOR DRIVEN 21 BATT 21 BATTERY 21 BATT CHG 21 BATTERY CHARGER 21 BATT CHG/XFM 21 BATTERY CHARGER TRANSFORMER 21 BCM/XFMR BORON CONC MEAS TRANSFORMER 21 FUSE BOX 21 FUSE BOX 21 IBA/XFMR INTERRUPTABLE BUS AUX TRANSFORMER 21 INV 21 INVERTER 211M/XFMR 211M TRANSFORMER 211M/XFMR 211M TRANSFORMER 212M/XFMR 212M TRANSFORMER 212M/XFMR 212M TRANSFORMER 21-3/CT1 21 FW PUMP CURRENT TRANSFORMER 21-3/CT2 21 FW PUMP CURRENT TRANSFORMER 21-3/PT1 21 FW PUMP POTENTIAL TRANSFORMER 213-011 22 CL PUMP DIESEL START-UP AIR COMPRESSOR 217-111 21 AUXILIARY FEEDWATER PUMP LUBE OIL COOLER 217-112 22 AUXILIARY FEEDWATER PUMP LUBE OIL COOLER A-3

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 217-121 22 CL PUMP GEAR OIL COOLER 217-201 D5 1A LO COOLER 217-202 D5 1B I/O COOLER 217-203 D5 2A LO COOLER 217-204 D5 2B L/O COOLER 217-205 D6 1A L/O COOLER 217-206 D6 1B L/O COOLER 217-207 D6 2A L/O COOLER 217-208 D6 2B L/O COOLER 217-211 D5 ENG 1 GOV OIL COOLER 217-212 D5 ENG 2 GOV OIL COOLER 217-213 D6 ENG 1 GOV OIL COOLER 217-214 D6 ENG 2 GOV OIL COOLER 21 MR 21 MISCELLANEOUS RELAY RACK 21MSAR 21 MISC SYSTEMS AUXILIARY RACK 21 RM RADIATION MONITORING RACK 21 RM 22 BATT 22 BATTERY 22 BATT 22 BATTERY (&BATTERY RACK) 22 BATT CHG 22 BATTERY CHARGER 22 BATT CHG/XFM 22 BATTERY CHARGER TRANSFORMER 22 FUSE BOX 22 FUSE BOX 22 INV 22 INVERTER 221 M/XFMR 221 M TRANSFORMER 222M/XFMR 222M TRANSFORMER 22-3/CT1 22 FW PUMP CURRENT TRANSFORMER 22-3/CT2 22 FW PUMP CURRENT TRANSFORMER 22-3/PT1 22 FW PUMP POTENTIAL TRANSFORMER 22MR 22 MISCELLANEOUS RELAY RACK 23 INV 23INVERTER 23-1/CT1 121 SCREENWASH PUMP CURRENT TRANSFORMER 23-1/CT2 121 SCREENWASH PUMP CURRENT TRANSFORMER 232-281 21 SCREENHOUSE ROOF EXHAUST FAN 232-291 21 SCREENHOUSE DIESEL COOLING SUPPLY FAN 232-421 21 D5 DSL RM COOLING FAN 232-422 22 D6 DSL RM COOLING FAN 232-441 21 D5 DSL GEN BLDG SPLY FAN 232-442 22 D6 DSL GEN BLDG SPLY FAN 232-443 23 D5 DSL GEN BLDG SPLY FAN 232-444 24 D6 DSL GEN BLDG SPLY FAN 232-451 21 D5 DSL GEN BLDG RETURN FAN 232-452 22 D6 DSL GEN BLDG RETURN FAN A-4

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 232-453 23 D5 DSL GEN BLDG RETURN FAN 232-454 24 D6 DSL GEN BLDG RETURN FAN 232-461 D5 ENG 1 HT/LT RADIATOR FAN 1 232-462 D5 ENG 1 HT/LT RADIATOR FAN 2 232-463 D5 ENG 2 HT/LT RADIATOR FAN 1 232-464 D5 ENG 2 HT/LT RADIATOR FAN 2 232-465 D6 ENG 1 HT/LT RADIATOR FAN 1 232-466 D6 ENG 1 HT/LT RADIATOR FAN 2 232-467 D6 ENG 2 HT/LT RADIATOR FAN 1 232-468 D6 ENG 2 HT/LT RADIATOR FAN 2 23-3/CT1 21 CW PUMP CURRENT TRANSFORMER 23-3/CT2 21 CW PUMP CURRENT TRANSFORMER 23-3/PT1 21 CW PUMP POTENTIAL TRANSFORMER 23-4/CT1 21 CL PUMP CURRENT TRANSFORMER 23-4/CT2 21 CL PUMP CURRENT TRANSFORMER 234-031 D5 DIESEL GENERATOR 234-032 D6 DIESEL GENERATOR 234BT/PT1 234BT POTENTIAL TRANSFORMER 234BT/PT2 234BT POTENTIAL TRANSFORMER 235-081 22 CL PUMP DIESEL JACKET CLG HX 235-111 21 REGENERATIVE HEAT EXCHANGER 235-131 21 SEAL WATER HEAT EXCHANGER 235-201 D5 ENG 1 LO PREHEATING HEAT EXCHANGER 235-202 D5 ENG 2 LO PREHEATING HEAT EXCHANGER 235-203 D6 ENG 1 LO PREHEATING HEAT EXCHANGER 235-204 D6 ENG 2 LO PREHEATING HEAT EXCHANGER 23-6/CT1 21 HD PUMP CURRENT TRANSFORMER 23-6/CT2 21 HD PUMP CURRENT TRANSFORMER 23-7/CT1 23 HD PUMP CURRENT TRANSFORMER 23-7/CT2 23 HD PUMP CURRENT TRANSFORMER 23-8/CT1 203-205-207 STA AUX XFMR CURRENT TRANSFORMER 23-8/CT2 203-205-207 STA AUX XFMR CURRENT TRANSFORMER 23A INV/XFMR 23 INVERTER ALT SOURCE TRANSFORMER 23M INV/XFMR 23 INVERTER MAIN TRANSFORMER 23M/CT 23M CURRENT TRANSFORMER 23M/PT 23M POTENTIAL TRANSFORMER 23MR 23 MISCELLANEOUS RELAY RACK 24 INV 24 INVERTER 24-2/CT1 22 CW PUMP CURRENT TRANSFORMER 24-2/CT2 22 CW PUMP CURRENT TRANSFORMER 24-2/PT1 22 CW PUMP POTENTIAL TRANSFORMER A-5

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 24-5/CT1 22 HD PUMP CURRENT TRANSFORMER 24-5/CT2 22 HD PUMP CURRENT TRANSFORMER 245-041 21 CHARGING PUMP 245-042 22 CHARGING PUMP 245-071 21 SI PMP 245-122 22 CC PMP 245-201 22 AUXILIARY FEEDWATER PUMP TURBINE DRIVEN 245-331 21 AUXILIARY FEEDWATER PUMP MOTOR DRIVEN 245-392 22 DD CLP 245-821 22 CL PUMP CNSTNT LUBE OIL PUMP 245-881 21 D5 FO STG TK XFER PUMP 245-882 22 D6 FO STG TK XFER PUMP 245-883 23 D5 FO STG TK XFER PUMP 245-884 24 D6 FO STG TK XFER PUMP 245-891 21 D5/D6 FO RCVG TK RECIRC PUMP 245-901 D5 ENG 1 ENG DRVN FO PUMP 245-902 D5 ENG 2 ENG DRVN FO PUMP 245-903 D6 ENG 1 ENG DRVN FO PUMP 245-904 D6 ENG 2 ENG DRVN FO PUMP 245-911 D5 ENG 1 FO BACKUP PUMP 245-912 D5 ENG 2 FO BACKUP PUMP 245-913 D6 ENG 1 FO BACKUP PUMP 245-914 D6 ENG 2 FO BACKUP PUMP 245-921 D5 1A ENG DRVN L/O PUMP 245-922 D5 1B ENG DRVN L/O PUMP 245-923 D5 2A ENG DRVN LO PUMP 245-924 D5 2B ENG DRVN L/O PUMP 245-925 D6 1B ENG DRVN UO PUMP 245-926 D6 1B ENG DRVN L/O PUMP 245-927 D6 2A ENG DRVN L/O PUMP 245-928 D6 2B ENG DRVN L/O PUMP 245-931 D5 ENG 1 AC PRELUBE PUMP 245-932 D5 ENG 2 AC PRELUBE PUMP 245-933 D6 ENG 1 AC PRELUBE PUMP 245-934 D6 ENG 2 AC PRELUBE PUMP 245-941 D5 ENG 1 DC BU PRELUBE PUMP 245-942 D5 ENG 2 DC BU PRELUBE PUMP 245-943 D6 ENG 1 DC BU PRELUBE PUMP 245-944 D6 ENG 2 DC BU PRELUBE PUMP 245-971 D5 ENG 1 ENG DRVN HT CLNT PUMP 245-972 D5 ENG 2 ENG DRVN HT CLNT PUMP A-6

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 245-973 D6 ENG 1 ENG DRVN HT CLNT PUMP 245-974 D6 ENG 2 ENG DRVN HT CLNT PUMP 245-981 D5 ENG 1 ENG DRVN LT CLNT PUMP 245-982 D5 ENG 2 ENG DRVN LT CLNT PUMP 245-983 D6 ENG 1 ENG DRVN LT CLNT PUMP 245-984 D6 ENG 2 ENG DRVN LT CLNT PUMP 245-991 D5 ENG 1 HT CLNT PREHTR CIRC PUMP 245-992 D5 ENG 2 HT CLNT PREHTR CIRC PUMP 245-993 D6 ENG 1 HT CLNT PREHTR CIRC PUMP 245-994 D6 ENG 2 HT CLNT PREHTR CIRC PUMP 24-6/CT1 204-206-209 STA AUX XFMR CURRENT TRANSFORMER 24-6/CT2 204-206-209 STA AUX XFMR CURRENT TRANSFORMER 246-011 22 CL PUMP DIESEL START-UP AIR RECEIVERS 246-031 D5 1A START AIR RECEIVER 246-032 D5 1B START AIR RECEIVER 246-033 D5 2A START AIR RECEIVER 246-034 D5 2B START AIR RECEIVER 246-035 D6 1A START AIR RECEIVER 246-036 D6 1B START AIR RECEIVER 246-037 D6 2A START AIR RECEIVER 246-038 D6 2B START AIR RECEIVER 24-7/CT A 21 CHILLER PH A CURRENT TRRANSFORMER 24-7/CT C 21 CHILLER PH C CURRENT TRANSFORMER 24-7/CT1 21 CHILLER CURRENT TRANSFORMER 24-7/CT2 21 CHILLER CURRENT TRANSFORMER 24-7/GND CT 21 CHILLER GND DET CURRENT TRANSFORMER 247-021 D5 ENG 1 HT CLNT PREHEATER 247-022 D5 ENG 2 HT CLNT PREHEATER 247-023 D6 ENG 1 HT CLNT PREHEATER 247-024 D6 ENG 2 HT CLNT PREHEATER 24A INV/XFMR 24 INVERTER ALT SOURCE TRANSFORMER 24M INV/XFMR 24 INVERTER MAIN TRANSFORMER 24M/CT 24M CURRENT TRANSFORMER 24M/PT 24M POTENTIAL TRANSFORMER 24MR 24 MISCELLANEOUS RELAY RACK 25 INV 25 INVERTER 25-2/CT1 202 STA AUX XFMR CURRENT TRANSFORMER 25-2/CT2 202 STA AUX XFMR CURRENT TRANSFORMER 25-3/CT1 22 CC PUMP CURRENT TRANSFORMER 25-3/CT2 22 CC PUMP CURRENT TRANSFORMER 253-011 21 PRESSURIZER RELIEF TANK A-7

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 253-021 21 VOLUME CONTROL TANK 253-081 21 REFUELING WATER STORAGE TANK 253-331 21 D5 FO STORAGE TANK 253-332 22 D6 FO STORAGE TANK 253-333 23 D5 FO STORAGE TANK 253-334 24 D6 FO STORAGE TANK 253-361 21 D5 FO DAY TANK 253-362 22 D6 FO DAY TANK 253-371 D5 ENG 1 FO LEAKAGE TANK 253-372 D5 ENG 2 FO LEAKAGE TANK 253-373 D6 ENG 1 FO LEAKAGE TANK 253-374 D6 ENG 2 LEAKAGE TANK 253-401 D5 ENG 1 HT EXPANSION TANK 253-402 D5 ENG 2 HT EXPANSION TANK 253-403 D6 ENG 1 HT EXPANSION TANK 253-404 D6 ENG 2 HT EXPANSION TANK 253-411 D5 ENG 1 LT EXPANSION TANK 253-412 D5 ENG 2 LT EXPANSION TANK 253-413 D6 ENG 1 LT EXPANSION TANK 253-414 D6 ENG 2 LT EXPANSION TANK 25-6/CT1 D2 EMERG GEN CURRENT TRANSFORMER 258-011 21 CLG WTR STRNR 26-0/CT1 21 AFW PUMP CURRENT TRANSFORMER 26-0/CT2 21 AFW PUMP CURRENT TRANSFORMER 26-2/CT1 D1 EMERG GEN CURRENT TRANSFORMER 262-441 D5 ENG 1 HT/LT RADIATOR 262-442 D5 ENG 2 HT/LT RADIATOR 262-443 D6 ENG 1 HT/LT RADIATOR 262-444 D6 ENG 2 HT/LT RADIATOR 26-5/CT1 21 CC PUMP CURRENT TRANSFORMER 26-6/CT1 201 STA AUX XFMR CURRENT TRANSFORMER 26-6/CT2 201 STA AUX XFMR CURRENT TRANSFORMER 266-011 D5 1A INBOARD AIR AFTERCOOLER 266-012 D5 1B INBOARD AIR AFTERCOOLER 266-013 D5 2A INBOARD AIR AFTERCOOLER 266-014 D5 2B INBOARD AIR AFTERCOOLER 266-015 D6 1A INBOARD AIR AFTERCOOLER 266-016 D6 1B INBOARD AIR AFTERCOOLER 266-017 D6 2A INBOARD AIR AFTERCOOLER 266-018 D6 2B INBOARD AIR AFTERCOOLER 266-021 D5 1A OBRD AIR AFTERCOOLER A-8

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 266-022 D5 1B OBRD AIR AFTERCOOLER 266-023 D5 2A OBRD AIR AFTERCOOLER 266-024 D5 2B OBRD AIR AFTERCOOLER 266-025 D6 1A OBRD AIR AFTERCOOLER 266-026 D6 1B OBRD AIR AFTERCOOLER 266-027 D6 2A OBRD AIR AFTERCOOLER 266-028 D6 2B OBRD AIR AFTERCOOLER 269-031 21 SEAL WATER INJECTION FILTER 269-032 22 SEAL WATER INJECTION FILTER 269-061 21 SEAL WATER FILTER 269-062 22 SEAL WATER FILTER 269-301 D5 ENG 1 COMBUSTION AIR FILTER 269-302 D5 ENG 2 COMBUSTION AIR FILTER 269-303 D6 ENG 1 COMBUSTION AIR FILTER 269-304 D6 ENG 2 COMBUSTION AIR FILTER 27 INV 27 INVERTER 274-011 21 CONTAINMENT FAN-COIL UNIT 274-012 22 CONTAINMENT FAN-COIL UNIT 274-013 23 CONTAINMENT FAN-COIL UNIT 274-014 24 CONTAINMENT FAN-COIL UNIT 274-031 25 SAFEGUARD SWITCHGEAR FAN-COIL UNIT 274-032 26 SAFEGUARD SWITCHGEAR FAN-COIL UNIT 274-051 21 AUXILIARY FEEDWATER PUMP MOTOR FAN-COIL UNIT 274-061 21 COMPONENT COOLING PUMP MOTOR FAN-COIL UNIT 274-062 22 COMPONENT COOLING PUMP MOTOR FAN-COIL UNIT 278-011 D5 ENG 1 EXHAUST SILENCER 278-012 D5 ENG 2 EXHAUST SILENCER 278-013 D6 ENG 1 EXHAUST SILENCER 278-014 D6 ENG 2 EXHAUST SILENCER 27A INV/XFMR 27 INVERTER ALT SOURCE TRANSFORMER 27M INV/XFMR 27 INVERTER MAIN TRANSFORMER 27M/CT 27M CURRENT TRANSFORMER 27M/PT 27M POTENTIAL TRANSFORMER 28 INV 28 INVERTER 2AF-29-1 21 AUX FW PUMP SUCT RELIEF 2AF-29-2 22 AUX FW PUMP SUCT RELIEF 2AMR1 MISCELLANEOUS RELAY RACK 2AMR1 2ARP1 REACTOR PROTECTION RELAY RACK 2ARP1 2ARP2 REACTOR PROTECTION RELAY RACK 2ARP2 2ARP3 REACTOR PROTECTION RELAY RACK 2ARP3 2ARP4 REACTOR PROTECTION RELAY RACK 2ARP4 A-9

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 2ARP5 REACTOR PROTECTION RELAY RACK 2ARP5 2ASG1 SAFEGUARD RELAY RACK 2ASG1 2ASG2 SAFEGUARD RELAY RACK 2ASG2 2B1 PROCESS PROTECTION RACK 2B1 2B2 PROCESS PROTECTION RACK 2B2 2BMR1 MISCELLANEOUS RELAY RACK 2BMR1 2BRP1 REACTOR PROTECTION RELAY RACK 2BRP1 2BRP2 REACTOR PROTECTION RELAY RACK 2BRP2 2BRP3 REACTOR PROTECTION RELAY RACK 2BRP3 2BRP4 REACTOR PROTECTION RELAY RACK 2BRP4 2BRP5 REACTOR PROTECTION RELAY RACK 2BRP5 2BSG1 SAFEGUARD RELAY RACK 2BSG1 2BSG2 SAFEGUARD RELAY RACK 2BSG2 2CL-25-1 22 DDCLP JACKET HX RELIEF 2CL-57-3 21 CONTAINMENT FAN COIL UNITS - RELIEF VLV 2CL-57-4 22 CONTAINMENT FAN COIL UNITS - RELIEF VLV 2CL-57-5 23 CONTAINMENT FAN COIL UNITS - RELIEF VLV 2CL-57-6 24 CONTAINMENT FAN COIL UNITS - RELIEF VLV 2CVC1 PROCESS CONTROL RACK 2CVC1 2CVC2 PROCESS CONTROL RACK 2CVC2 2CVCS1 PROCESS CONTROL RACK 2CVCS1 2CVCS2 PROCESS CONTROL RACK 2CVCS2 2DG-3 D2 JACKET CLNT HTR RELIEF 2EG-15-2 D5 1B START AIR RCVR RELIEF 2EMA DISTRIBUTION PANEL 2EMA 2EMB DISTRIBUTION PANEL 2EMB 2FE-1 15 21 REAC CLNT PMP SL WTR INJ F ORIF 2FE-1 16 22 REAC CLNT PMP SL WTR INJ F ORIF 2FT-1 15 21 REAC CLNT PMP SL WTR INJ F XMTR 2FT-116 22 REAC CLNT PMP SL WTR INJ F XMTR 2FT-464 MN STM FR 21 STM GEN CHNNL I RED F XMTR 2FW PROCESS CONTROL RACK 2FW 2HC-142 21 CHG LINE FLOW CONT STA 2HC-428A 21 CHARGING PUMP SPEED CONT STA 2HC-428B 22 CHARGING PUMP SPEED CONT STA 2HC-468 21 MN STM SAF RLF TO ATM LOOP A CONT STA 2HC-478 21 MN STM SAF RLF TO ATM LOOP B CONT STA 2HSC-428D 21 CHG PMP SPD CONT STA 2HSC-428E 22 CHG PMP SPD CONT STA 2L1-112 21 VOL CONT TNK LI 2LI-141B 21 VOL CONT TNK LI A-10

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 2LQ-112 21 VOL CONT TNK LVL PWR SPLY 2LQ-141 21 VOL CONT TNK LVL PWR SPLY 2LQ-426 PRESSURIZER LVL TRANS PWR SPLY 2LQ-427 PRESSURIZER LVL TRANS PWR SUPPLY 2LQ-428 PRESSURIZER LVL TRANS PWR SPLY 2LT-112 21 VOL CONT TNK LVL XMTR 2LT-141 21 VOL CONT TNK LVL XMTR 2LT-426 2 REAC CLNT LOOP PRZR (CHNNL I-RED) LVL XMTR 2LT-427 2 REAC CLNT LOOP PRZR (CHNNL II-WHI) LVL XMTR 2LT-428 2 REAC CLNT LOOP PRZR (CHNNL III-BLU)LVL XMTR 2LT-461 21 STM GEN LOOP A CHNNL I-RED LVL XMTR 2LT-487 21 STM GEN LOOP A WR LVL XMTR 2LT-488 22 STM GEN LOOP B WR LVL XMTR 2LT-751 21 RX VSL HEAD UPPER RNG TRN A D/P XMTR 2LT-753 21 RX VSL HEAD DYNAMIC RNG TRN A D/P XMTR 2LT-761 22 RX VSL HEAD UPPER RNG TRN B D/P XMTR 2LT-762 U2 RVLIS HEAD FULL RANGE TRN B D/P XMTR 2LT-763 22 RX VSL HEAD DYNAMIC RNG TRN B D/P XMTR 2LT-920 21 RWST LVL XMTR 2LT-921 21 RWST LVL XMTR 2NE-51 EXCORE DETECTION TRN A DETECTOR ASSY 2NE-52 EXCORE DETECTION TRN B DETECTOR ASSY 2NI-51A EXCORE DETECTION TRN A SHUTDOWN MONITOR 2NI-52A EXCORE DETECTION TRN B SHUTDOWN MONITOR 2NM-51 EXCORE DETECTION TRN A AMPLIFIER 2NM-51A EXCORE DETECTION TRN A OPTICAL ISOLATOR 2NM-52 EXCORE DETECTION TRN B AMPLIFIER 2NR1 NUCLEAR INSTRUMENTATION RACK 2NR1 2NR2 NUCLEAR INSTRUMENTATION RACK 2NR2 2NR3 NUCLEAR INSTRUMENTATION RACK 2NR3 2NR4 NUCLEAR INSTRUMENTATION RACK 2NR4 2PQ-429 2 REAC CLNT LOOP PRZR (CHNNL 1-RED) P PWR SPLY 2PQ-430 2 REAC CLNT LOOP PRZR (CHNNL II-WHI) P PWR SPLY 2PQ-431 2 REAC CLNT LOOP PRZR (CHNNL III-BLU) P PWR SPLY 2PQ-468 STM GEN PRESS XMTR PWR SPLY 2PQ-478 STM GEN PRESS XMTR PWR SPLY 2PQ-482 STM GEN PRESS XMTR PWR SPLY 2PQ-483 STM GEN PRESS XMTR PWR SPLY 2PT-429 2 REAC CLNT LOOP PRZR (CHNNL I-RED) P XMTR 2PT-430 2 REAC CLNT LOOP PRZR (CHNNL II-WHI) P XMTR 2PT-431 2 REAC CLNT LOOP PRZR (CHNNL III-BLU) P XMTR A-11

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 2PT-468 21 STM GEN MN STM HDR (CHNNL I-RED) P XMTR 2PT-469 21 STM GEN MN STM HDR (CHNL II-WHI) P XMTR 2PT-478 22 STM GEN MN STM HDR (CHNNL III-BLU) P XMTR 2PT-479 22 STM GEN MN STM HDR (CHNL IV-YEL) P XMTR 2PT-482 21 STM GEN MN STM HDR (CHNNL III-BLU) P XMTR 2PT-483 22 STM GEN MN STM HDR (CHNNL I-RED) P XMTR 2PZRHTRA/CT A 2 PRZR HTR GRP A CURRENT XFMR A 2PZRHTRAICT C 2 PRZR HTR GRP A CURRENT XFMR C 2PZRHTRA/PT A 2 PRZR HTR GRP A POTENTIAL XFMR A 2PZRHTRA/PT C 2 PRZR HTR GRP A POTENTIAL XFMR C 2PZRHTRAIXFMR 2 PRZR HTR GRP A TRANSFORMER 2PZRHTRB/CT A 2 PRZR HTR GRP B CURRENT XFMR A 2PZRHTRB/CT C 2 PRZR HTR GRP B CURRENT XFMR C 2PZRHTRB/PT A 2 PRZR HTR GRP B POTENTIAL XFMR A 2PZRHTRB/PT C 2 PRZR HTR GRP B POTENTIAL XFMR C 2PZRHTRB/XFMR 2 PRZR HTR GRP B TRANSFORMER 2R1 PROCESS PROTECTION RACK 2R1 2R2 PROCESS PROTECTION RACK 2R2 2RC-10-1 PRESSURIZER RELIEF VALVE 2RC-10-2 PRESSURIZER RELIEF VALVE 2RCS1 PROCESS CONTROL RACK 2RCS1 2RCS2 PROCESS CONTROL RACK 2RCS2 2RH-8-1 RHR HOT LEG SUCTION RELIEF 2RM RADIATION MONITORING RACK 2RM 2RM3 U2 AREA RADIATION MONITORING RACK 2RP1 ROD POSITION INDICATOR RACK 2RP1 2RP2 ROD POSITION INDICATOR RACK 2RP2 2RP3 ROD POSITION INDICATOR RACK 2RP3 2SA PROCESS CONTROL RACK 2SA 2SC-428A 21 CHG PMP SPEED CONTR 2SC-428B 22 CHG PMP SPEED CONTR 2SD PROCESS CONTROL RACK 2SD 2SI-26-1 RHR HX TO 2 RX VESSEL LOOP B RELIEF VALVE TO PRT 2SPT-428A 21 CHG PMP SPEED CONT RNG EXPANDING XMTR 2SRR-428A 21 CHG PMP SPEED CONT PRESS REG 2SRR-428B 22 CHG PMP SPEED CONT PRESS REG 2ST-428A 21 CHG PMP SPEED CONT SPEED XMTR 2ST-428B 22 CHG PMP SPEED CONT SPEED XMTR 2T3/24407 21 CHILLER LOAD LIMIT XFMR 2VC-24-1 21 VOLUME CONTROL TANK RELIEF 2VC-25-1 RCP SEAL RETURN/EXCESS LETDOWN RELIEF TO PRT A-12

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description 2VC-25-2 LETDOWN LINE TO VCT INLET 2VC-26-1 2 REGEN HX LETDOWN LINE OUTLET RELIEF TO PRT 2VC-28-1 21 CHARGING PUMP DISCHARGE RELIEF 2VC-28-2 22 CHARGING PUMP DISCHARGE RELIEF 2W1 PROCESS PROTECTION RACK 2W1 2W2 PROCESS PROTECTION RACK 2W2 2Y1 PROCESS PROTECTION RACK 2Y1 2Y2 PROCESS PROTECTION RACK 2Y2 A CONTROL PANEL A AC21 BOP ANNUNCIATOR CABINET AC21 AC22 BOP ANNUNCIATOR CABINET AC22 AC23 BOP ANNUNCIATOR CABINET AC23 AC24 BOP ANNUNCIATOR CABINET AC24 AF-29-1 11 AUX FW PUMP SUCT RELIEF AF-29-2 12 AUX FW PUMP SUCT RELIEF AUX RELAY CAB 1203 AUX RELAY CAB 1203 B-2 CONTROL PANEL B-2 B21/SWGR BUS 21 4.16KV SWITCHGEAR B21/XFR SW 4.16 KV BUS 21 TRANSFER SWITCH B22/SWGR BUS 22 4.16KV SWITCHGEAR B22/XFR SW 4.16 KV BUS 22 TRANSFER SWITCH B23/SWGR BUS 23 4.16KV SWITCHGEAR B24/SWGR BUS 24 4.16KV SWITCHGEAR B25 LOGIC-1 BUS 25 LOGIC CAB 1 B25 LOGIC-2 BUS 25 LOGIC CAB 2 B25/AUX RELAY CAB BUS 25 AUXILIARY RELAY CABINET B25/LOAD SEQ CAB BUS 25 SAFEGUARDS LOAD SEQUENCER CABINET B25/SWGR BUS 25 4.16KV SWITCHGEAR B25/XFR SW 4.16KV SWGR BUS 25 TRANSFER SWITCH B26 LOGIC-1 BUS 26 LOGIC CAB 1 B26 LOGIC-2 BUS 26 LOGIC CAB 2 B26/AUX RELAY CAB BUS 26 AUXILIARY RELAY CABINET B26/LOAD SEQ CAB BUS 26 SAFEGUARDS LOAD SEQUENCER CABINET B26/SWGR BUS 26 4.16KV SWITCHGEAR B26/XFR SW 4.16KV SWGR BUS 26 TRANSFER SWITCH BENCH BOARD D5 BENCH BOARD D5 BENCH BOARD D6 BENCH BOARD D6 BUS 211 BUS 211 BUS 212 BUS 212 480V SWITCHGEAR BUS 221 BUS 221 BUS 222 BUS 222 480V SWITCHGEAR A-13

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description BUS 25 BUS 25 BUS 26 BUS 26 C-2 CONTROL PANEL C-2 CD-34080 21 FCU DISCH TO CNTMT DOME CD CD-34081 21 FCU NORM DISCH TO GAP &STRUCT CD CD-34082 22 FCU DISCH TO CNTMT DOME CD CD-34083 22 FCU NORM DISCH TO GAP &STRUCT CD CD-34084 23 FCU DISCH TO CNTMT DOME CD CD-34085 23 FCU NORM DISCH TO GAP &STRUCT CD CD-34086 24 FCU DISCH TO CNTMT DOME CD CD-34087 24 FCU NORM DISCH TO GAP & STRUCT CD CD-34138 21 CLASS I ROOF EXHT FAN DSCH CD CD-34139 21 SCVNG &COMBTM AIR CD CV-31060 22 TD AFW PUMP TRIP THROTTLE CV CV-31102 21 STM GEN POWER OPERATED RELIEF CV CV-31107 22 STM GEN POWER OPERATED RELIEF CV CV-31116 21 LOOP A MN STM HDR ISOL CV CV-31117 22 LOOP B MN STM HDR ISOL CV CV-31230 2 REAC CLNT LOOP PRZR LTDN LN ISOL CV A CV-31279 2 REAC CLNT LOOP PRZR LTDN LN ISOL CV B CV-31418 21 MD AUX FW PMP RCRC/LUBE OIL CLG CV CV-31419 22 TD AUX FW PMP RCRC/LUBE OIL CLG CV CV-31425 21/22 RCP SEAL BYPASS RETURN CV CV-31457 22 DDCLP JCKT CLR OUTL CV CV-31654 21 CLG WTR STRAINER BACKWASH CV CV-31655 22 CLG WTR STRNR BCKWSH CV CV-31999 22 TD AFW PMP STM BLOCK CV CV-39200 21 & 23 FCU CLG WTR RTN ORIF B-P CV CV-39202 22 & 24 FCU CLG WTR RTN ORIF B-P CV CV-39413 22/24 FCU CLG WTR SUPPLY CV CV-39414 22/24 FCU CHILLED WTR SUPPLY CV CV-39415 21/23 FCU CLG WTR SUPPLY CV CV-39416 21/23 FCU CHILLED WTR SUPPLY CV CV-39417 22 SHROUD CLG COILS TR A CHILLED WTR SUPPLY CV CV-39419 21 SHROUD CLG COILS TR B CHILLED WTR SUPPLY CV CV-39421 22/24 FCU CLG WTR RETURN CV CV-39423 21/23 FCU CLG WTR RETURN CV D-2 CONTROL PANEL D-2 D2 CFRP/XFMR D2 CLEAN FUEL RTRN PMP TRANSFORMER D2!CT CURRENTTRANSFORMER D2/GEN RLY PNL D2 EMERG GEN RELAY PNL A-14

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description D2/GND RES NEUTRAL GROUNDING RESISTOR D2/GND XFMR NEUTRAL GROUNDING TRANSFORMER D2-3 GENERATOR RELAY BOX D2-3 D5/EXC PNL D5 DSL GEN EXCITATION PANEL-SEVR D5/GND CAB D5 DSL GEN GROUND CABINET D5/RTU D5 DSL GEN REMOTE TERMINAL UNIT CABINET D5/RTV D5 DSL GEN REMOTE TRANSMITTER & VIBRATION CABINET D6/EXC PNL D6 DSL GEN EXCITATION PANEL-SEVR D6/GND CAB D6 DSL GEN GROUND CABINET D6/RTU D6 DSL GEN REMOTE TERMINAL UNIT CABINET D6/RTV D6 DSL GEN REMOTE TRANSMITTER & VIBRATION CABINET DG AUX DESK D5 DG AUX DESK D5 DG AUX DESK D6 DG AUX DESK D6 E-2 CONTROL PANEL E-2 EM-A2 EVENT MONITORING RACK EM-A2 EM-B2 EVENT MONITORING RACK EM-B2 ET-507/XFMR U2 CNTMT AIR SMPL LN HT TRACE XFMR F-2 CONTROL PANEL F-2 G-2 CONTROL PANEL G-2 GRD/D5 D5 DSL GEN NEUT GROUNDING TRANSFORMER GRD/D6 D6 DSL GEN NEUT GROUNDING TRANSFORMER LOOP 2H-428A 21 CHARGING PUMP SPEED CONTROL LOOP 2H-428B 22 CHARGING PUMP SPEED CONTROL LOOP 2L-112 21 VC TK LVL LOOP 2L-141 22 VC TK LVL LOOP 2L-426-RP PRZR LVL RED CHANNEL LOOP 2L-428-RP PRZR LVL BLUE CHANNEL LOOP 2P-429-RP PRZR PRESS RED CHANNEL LOOP 2P-431-RP PRZR PRESS BLUE CHANNEL LOOP 2P-482-RP 21 STM GEN PRESS BLUE CHANNEL LOOP 2P-483-RP 22 STM GEN PRESS RED CHANNEL MCC 2A1 MOTOR CONTROL CENTER 2A BUS 1 MCC 2A2 MOTOR CONTROL CENTER 2A BUS 2 MCC 2AA2 MOTOR CONTROL CENTER 2AA BUS 2 MCC 2AC1 MOTOR CONTROL CENTER 2AC BUS 1 MCC 2AC2 MOTOR CONTROL CENTER 2AC BUS 2 MCC 2B1 MOTOR CONTROL CENTER 2B BUS 1 MCC 2BA1 MOTOR CONTROL CENTER 2BA BUS 1 MCC 2D1 MOTOR CONTROL CENTER 2D BUS 1 MCC 2D2 MOTOR CONTROL CENTER 2D BUS 2 MCC 2DA1 MOTOR CONTROL CENTER 2DA BUS 1 A-15

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description MCC 2DA2 MOTOR CONTROL CENTER 2DA BUS 2 MCC 2E1 MOTOR CONTROL CENTER 2E BUS 1 MCC 2E2 MOTOR CONTROL CENTER 2E BUS 2 MCC 2EGB MOTOR CONTROL CENTER 2EGB MCC 2J1 MOTOR CONTROL CENTER 2J BUS 1 MCC 2J2 MOTOR CONTROL CENTER 2J BUS 2 MCC 2K1 MOTOR CONTROL CENTER 2K BUS 1 MCC 2K2 MOTOR CONTROL CENTER 2K BUS 2 MCC 2KA2 MOTOR CONTROL CENTER 2KA BUS 2 MCC 2L1 MOTOR CONTROL CENTER 2L BUS 1 MCC 2L2 MOTOR CONTROL CENTER 2L BUS 2 MCC 2LA1 MOTOR CONTROL CENTER 2LA BUS 1 MCC 2LA2 MOTOR CONTROL CENTER 2LA BUS 2 MCC 2M1 MOTOR CONTROL CENTER 2M BUS 1 MCC 2M2 MOTOR CONTROL CENTER 2M BUS 2 MCC 2P1 MOTOR CONTROL CENTER 2P BUS 1 &2 MCC 2R1 MOTOR CONTROL CENTER 2R BUS 1 & 2 MCC 2S1 MOTOR CONTROL CENTER 2S BUS 1 MCC 2TA1 MOTOR CONTROL CENTER 2TA BUS 1 MCC 2TA2 MOTOR CONTROL CENTER 2TA BUS 2 MCC 2X1 MOTOR CONTROL CENTER 2X BUS 1 MCC 2X2 MOTOR CONTROL CENTER 2X BUS 2 MTR 121C-22 22 COOLING WATER STRAINER MTR 211K-12 21 D5 DSL GEN BLDG SPLY FAN MTR 211 K-1 3 21 D5 DSL GEN BLDG RETURN FAN MV-32020 22 SG MS SPLY TO 22 TD AFW PMP MV MV-32026 21 MD AFW PUMP SUCT CLG WTR SUPPLY MV MV-32030 22 TD AFW PUMP SUCT CLG WTR SUPPLY MV MV-32033 2 TURB BLDG CLG WTR HDR MV MV-32048 21 MSIV BYPASS MV MV-32050 22 MSIV BYPASS MV MV-32060 RFLG WTR EMERG MK-UP TO CHG PMPS MV MV-32062 RFLG WTR EMERG MK-UP TO CHG PMPS MV MV-32063 21 VOL CONT TNK TO CHG PMPS ISOL MV MV-32144 LOOP A/B CLG WTR HDR XOVR MV A MV-32148 21 FCU CLG WTR OUTL ISOL MV B MV-32156 24 FCU CLG WTR OUTL ISOL MV A MV-32159 LOOP A/B CLG WTR HDR XOVR MV B MV-32160 21 CC HX CLG WTR INLET MV MV-32161 22 CC HX CLG WTR INLET MV MV-32180 SUMP B TO 21 RHR PMP TRN A (OUTSIDE) MV A-16

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description MV-32194 2 REAC EXCS LTDN LINE ISOL MV A MV-32210 2 RCP SEAL RETURN/EXCESS LETDOWN ISOL TRN B MV MV-32246 22 TD AUX FW TO 21 STM GEN MV MV-32248 21/22 AFW TO 21 SG ISOL MV MV-32383 21 MD AFW PMP DISCH TO 21 SG MV MV-32384 21 AFWP DSCH TO 22 STM GEN MV MV-32389 24 FCU CLG WTR INLT ISOL MV PNL 21 DISTRIBUTION PANEL 21 PNL 211 INSTRUMENT BUS II PANEL (WHI) 211 PNL 2111 AC DISTRIBUTION PANEL (WHI) 2111 PNL 2112 AC DISTRIBUTION PANEL (RED) 2112 PNL 2113 AC DISTRIBUTION PANEL (BLU) 2113 PNL 2114 AC DISTRIBUTION PANEL (YEL) 3114 PNL 2116 AC DISTRIBUTION PANEL 2116 PNL 21-16 125 VDC PANEL 25 PNL 212 INSTRUMENT BUS I PANEL (RED) 212 PNL 212-3 PROCESS RACK 2R1 PNL 212-4 PROCESS RACK 2R2 PNL 213 INSTRUMENT BUS III PANEL (BLU) 213 PNL 213-3 PROCESS RACK 2B1 PNL 213-4 PROCESS RACK 2B2 PNL 214 INSTRUMENT BUS IV PANEL (YEL) 214 PNL 215 ROD POSITION PANEL 215 PNL 216 NON-INTERRUPTABLE PANEL 216 PNL 217 INTERRUPTABLE PANEL 217 PNL 218 AC DISTRIBUTION PANEL 218 PNL 218/REG PNL 218 SOLATRON VOLTAGE REGULATORN PNL 22 DC DISTRIBUTION PANEL 22 PNL 22-18 125 VDC PANEL 26 PNL 227/DISC SW DISTRIBUTION PANEL 227 DISCONNECT SWITCH PNL 228/DISC SW DISTRIBUTION PANEL 228 DISCONNECT SWITCH PNL 230 AC DISTRIBUTION PANEL 230 PNL 231 DC DISTRIBUTION PANEL 231 PNL 232 AC DISTRIBUTION PANEL 232 PNL 234 AC DISTRIBUTION PANEL 234 PNL 234/XFMR PANEL 234 TRANSFORMER PNL 235 AC DISTRIBUTION PANEL 235 PNL 235/XFMR PANEL 235 TRANSFORMER PNL 246 AC DISTRIBUTION PANEL 246 PNL 246/XFMR PANEL 246 TRANSFORMER PNL 247/XFMR PANEL 247 TRANSFORMER A-17

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-1: Prairie Island Unit 2 - Base List 1 Equipment Tag Description PNL 248/XFMR PANEL 248 TRANSFORMER PNL 25 NUCLEAR DISTRIBUTION PANEL 25 PNL 251 DC DISTRIBUTION PANEL 251 PNL 251-10 U2 TRN A RCS VENT SYS SV37091;37093;37095 PNL 25-15 125 VDC PANEL 253 PNL 25-16 125 VDC PANEL 251 PNL 25-18 125 VDC PANEL 252 PNL 251-9 21 &22 MN STM HDR ISOL CV-31116 & CV-31117 PNL 252 DC DISTRIBUTION PANEL 252 PNL 252-14 CV 39200 21 & 23 FCU CLG WTR RTRN ORIF BYPS PNL 253 DC DISTRIBUTION PANEL 253 PNL 253-34 CD 34080 21 FCU DISCH TO CNTMT DOME CD PNL 253-35 CD 34081 21 FCU DISCH TO CNTMT BSTR FAN CD PNL 26 NUCLEAR DISTRIBUTION PANEL 26 PNL 261 DC DISTRIBUTION PANEL 261 PNL 261-12 CV 31999 22 TD AUX FW PMP MN STM SUPPLY CV PNL 261-15 CV31419 22 TD AUX FW PMP RECIRC PNL 26-15 125 VDC PANEL 263 PNL 26-16 125 VDC PANEL 261 PNL 26-17 125 VDC PANEL 262 PNL 261-8 21 & 22 MN STM HDR ISOL CV-31116 &CV-31117 PNL 262 DC DISTRIBUTION PANEL 262 PNL 262-1 U2 TRN B RCS VENT SYS SV37092;37094;37096 PNL 262-6 CV 39202 22 &24 FCU CLG WTR RTRN ORIF BYPS PNL 263 DC DISTRIBUTION PANEL 263 PNL 263-16 CD 34082 22 FCU DISCH TO CNTMT DOME CD PNL 263-18 CD 34083 22 FCU DISCH TO BOOSTER FANS CD PNL 27 DISTRIBUTION PANEL 27 PNL 28 DISTRIBUTION PANEL 28 PNL 2EM DISTRIBUTION PANEL 2EM PNL 2EMA EVENT MONITORING RACK EM-A2 PNL 2EMAIDISC DISTRIBUTION PANEL 2EMA DISCONNECT SWITCH PNL 2EM-A1 PNL 2EM-A1 PNL 2EMA-11 ICCM UNIT 2 TRAIN A MICROPROCESSOR 2LM-750 PNL 2EMA-3 EXCORE DET AMPLIFIER 2NM-51 PNL 2EMA-8 TB A1688 ICCM UNIT 2 TRAIN A PLASMA DISPLAY PNL 2EMB EVENT MONITORING RACK EM-A2 PNL 2EMB/DISC DISTRIBUTION PANEL 2EMB DISCONNECT SWITCH PNL 2EM-B1 PNL 2EM-B1 PNL 2EMB-1 1 ICCM UNIT 2 TRAIN B MICROPROCESSOR 2LM-760 PNL 2EMB-3 EXCORE DET AMPLIFIER 2NM-52 A-18

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description PNL 2EMB-8 TB 2889 ICCM UNIT 2 TRAIN B PLASMA DISPLAY PNL 31 DC DISTRIBUTION PANEL 31 PT/TT1/D5 D5 DSL GEN PH A-B POT XFMR 4.16KV-120X120V PT/TT1/D6 D6 DSL GEN PH A-B POT XFMR 4.16KV-120X120V PTiTT2/D5 D5 DSL GEN PH B-C POT XFMR 4.16KV-120X120V PT/TT2/D6 D6 DSL GEN PH B-C POT XFMR 4.16KV-120X120V PT/TT3/D5 D5 DSL GEN PH A-B POT XFMR 4.16KV-120X120V PT/TT3/D6 D6 DSL GEN PH A-B POT XFMR 4.16KV-120X120V PT/ITT4/D5 D5 DSL GEN PH B-C POT XFMR 4.16KV-120X120V PT/TT4/D6 D6 DSL GEN PH B-C POT XFMR 4.16KV-120X120V PT-1/D5 D5 AUTO VOTAGE REG MOTOR ORERATED POT PT-1/D6 D6 AUTO VOTAGE REG MOTOR ORERATED POT PT-2/D5 D5 MANUAL VOLTAGE REG MOTOR OOPERATED POT PT-2/D6 D6 MANUAL VOLTAGE REG MOTOR OOPERATED POT PWRS/24407 U2 CHILLED WTR SYS 28V PWR SPLY RS-21-11 SAFETY VALVE HEADER STM GENERATOR 21 RS-21-12 SAFETY VALVE HEADER STM GENERATOR 21 RS-21-13 SAFETY VALVE HEADER STM GENERATOR 21 RS-21-14 SAFETY VALVE HEADER STM GENERATOR 21 RS-21-15 SAFETY VALVE HEADER STM GENERATOR 21 RS-21-16 SAFETY VALVE HEADER STM GENERATOR 22 RS-21-17 SAFETY VALVE HEADER STM GENERATOR 22 RS-21-18 SAFETY VALVE HEADER STM GENERATOR 22 RS-21-19 SAFETY VALVE HEADER STM GENERATOR 22 RS-21-20 SAFETY VALVE HEADER STM GENERATOR 22 SA-56-3 22 CLG WTR PUMP - DIESEL STARTING AIR SV-33258 21 LOOP A MN STM HDR SV A SV-33259 21 LOOP A MN STM HDR SV B SV-33260 21 LOOP A MN STM HDR AIR EXHT SV A SV-33261 21 LOOP A MN STM HDR AIR EXHT SV B SV-33263 22 LOOP B MN STM HDR SV A SV-33264 22 LOOP B MN STM HDR SV B SV-33265 22 LOOP B MN STM HDR AIR EXHT SV A SV-33266 22 LOOP B MN STM HDR AIR EXHT SV B SV-33300 22 TD AFW PMP STM BLOCK SV SV-33346 22 CLG WTR STRNR BCKWSH SV SV-33389 21 FAN COIL UNIT DSCH TO CONTM DOME DMPR TRN A S SV-33390 21 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S SV-33391 22 FAN COIL UNIT DSCH TO CONTM DOME DMPR TRN B S SV-33392 22 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S SV-33393 23 FAN COIL UNIT DSCH TO CONTM DOME TRN A SV A-19

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description SV-33394 23 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S SV-33395 24 FAN COIL UNIT DSCH TO CONTM DOME TRN B SV SV-33396 24 FAN COIL UNIT NORM DSCH TO GAP & STRUC DMPR S SV-33466 22 DD CLWP AIR MTR RS SV A SV-33467 22 DD CLWP AIR MTR SV B SV-33490 2 REAC CLNT LOOP PRZR LTDN LN ISOL SV SV-33491 2 REAC CLNT LOOP PRZR LTDN LN ISOL SV 2 SV-33492 21 MD AUX FW PMP RCRC/LUBE OIL CLG SV SV-33493 22 TD AUX FW PMP RCRC/LUBE OIL CLG SV SV-33498 2 DSL GEN RM OUTS AIR B TRN DMPR SV SV-33565 21 AUX FW PMP MTR UNIT CLR SV SV-33695 21 CLASS I ROOF EXHT FAN DMPR SV SV-33696 21 SCVNG &COMTN AIR DMPR SV A SV-33777 22 DD CLWP DSL JCKT CLR OUTL SV SV-33829 21 SCVNG & COMBTN AIR DMPR SV B 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-37094 RCS VENT SYS REACTOR HEAD VENT SV SV-37095 RCS VENT SYS TO PRT SV SV-37096 RCS VENT SYS TO CNTMT ATMOS SV SV-37200 21 &23 FCU CLG WTR RTN ORIFICE B-P SV SV-37202 22 & 24 FCU CLG WTR RTN ORIF B-P SV SV-37413 22; 24 FCU CLG WTR SUPPLY SV SV-37415 21; 23 FCU CLG WTR SUPPLY SV SV-37421 22; 24 FCU CLG WTR RETURN SV SV-37423 21; 23 FCU CLG WTR RETURN SV SV-37464 UNIT 2 TRAIN A CHILL WTR/CLG WTR ISOL SV SV-37465 UNIT 2 TRAIN B CHILL WTR/CLG WTR ISOL SV SV-37466 UNIT 2 TRAIN A CHILL WTR/CLG WTR ISOL SV SV-37467 UNIT 2 TRAIN B CHILL WTR/CLG WTR ISOL SV SV-37904 D5 ENG 1 AUX DESK 1B START AIR SV TB 2209 RELAY ROOM AUX RELAY CABINET TB 2222 RELAY ROOM TERMINAL BOX TB 2229 RELAY ROOM TERMINAL BOX TB 2480 TB FOR 21 CHARGING PUMP TB 2481 TB FOR 22 CHARGING PUMP TERM CAB 2222 TERM CAB 2222 TERM CAB 2229 TERM CAB 2229 VC-25-2 LETDOWN LINE TO VOLUME CONTROL TANK INLET - RLF VERT CONT PNL D5 VERT CONT PNL D5 A-20

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-i: Prairie Island Unit 2 - Base List 1 Equipment Tag Description VERT CONT PNL D6 VERT CONT PNL D6 A.2 Final SWEL 1 This section provides a list of the final equipment selected for PINGP's SWEL 1 in Table A-2 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:

          *  "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-21

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie Island Unit 2 - SWEL 1 Equipment Safety 2 System 3 Verify Tag Description Class Function Anchorage? Deferred? Comments 50000 D5 DSL GEN BENCHBOARD 20 1,2, 3, 4,5 D5 Yes 50200 D5 DSL GEN VERTICAL PANEL 20 1,2, 3, 4, 5 D5 Yes 55320 D5 DSL GEN ENG 1 AUX DESK 20 1,2, 3, 4,5 D5 Yes 70350 22 DD CLWP LCL PNL 20 1,2, 3, 4, 5 CL Yes 053-322 22 DD CLG WTR PMP DSL OIL DAY TNK 21 1,2, 3, 4, 5 CL Yes New or replaced, 21 BATT 21 BATTERY (&BATTERY RACK) 15 1,2, 3,4, 5 DC Yes NeE enhaced IPEEE Enhanced 21 BATT CHG 21 BATTERY CHARGER 16 1,2, 3, 4,5 DC Yes Yes 21 INV 21 INVERTER 16 1,2, 3, 4,5 IP Yes Yes 211 M/XFMR 211 MTRANSFORMER 4 1,2, 3, 4, 5 EB Risk significant 212M/XFMR 212M TRANSFORMER 4 1,2, 3, 4,5 EB 217-111 21 MD AFW PMP L/O CLR 21 4 AF 22 BATT 22 BATTERY (&BATTERY RACK) 15 1,2, 3, 4, 5 DC Yes New or replaced A-22

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie Island Unit 2 - SWEL 1 E q u ip m e n t De c i t o l s ' Sa fe ty 2 S s e 3V e rify D f r e ?C m e t Tag Description Function Anchorage? 22 BATT CHG 22 BATTERY CHARGER 16 1,2,3,4,5 DC Yes 221M/XFMR 221M TRANSFORMER 4 1,2, 3, 4,5 EB Risk significant 23 INV 23 INVERTER 16 1,2, 3, 4, 5 IP Yes Yes Risk significant 232-281 21 SFGDS SCRNHSE ROOF EXHT FAN 9 1,2, 3,4, 5 ZR Yes Yes IPEEE Enhanced 234-031 D5 DSL GEN 17 1,2, 3, 4,5 D5 234-032 D6 DSL GEN 17 1, 2, 3, 4,5 D6 235-081 22 CLG WTR PMP DSL JCKT CLG HX 21 1,2, 3, 4, 5 CL IPEEE Enhanced 245-042 22 CHG PMP 5 1,2,3 VC Yes 245-071 21 SI PMP 5 3 SI Yes 245-122 22 CC PMP 5 2,3 CC Yes 245-201 22 TD AFW PMP 5 4 AF Yes 245-392 22 DD CLG WTR PMP 6 1,2, 3, 4, 5 CL Yes IPEEE Enhanced 246-031 D5 1A START AIR RCVR 21 1,2, 3, 4,5 D5 A-23

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie Island Unit 2 - SWEL 1 Equipment Tag Description Decito Class' ls1Function2 Safety 2 ytm 3 System Anchorage? Verify Deferred? Comments 253-361 21 D5 FO DAY TANK 21 1,2, 3, 4,5 FO Yes 253-401 D5 ENG 1 HT EXPANSION TANK 21 1,2, 3, 4, 5 D5 258-011 21 CLG WTR STRNR 0 1,2, 3, 4,5 CL Yes 274-013 23 CNTMT FCU 10 5 ZC Yes Yes New or replaced 274-031 121 SWGR RM UNIT CLR 10 1,2,3,4,5 ZH 274-162 TRN B EVENT MON RM UNIT CLR 10 1,2, 3, 4,5 ZH 2ASG1 SAFEGUARD RELAY RACK 2ASG1 20 1,2, 3, 4,5 RP Yes 2EG-15-2 D5 1B START AIR RCVR RELIEF 7 1,2,3,4,5 D5 2FT-464 MN STM FR 21 STM GEN CHNNL I RED F XMTR 18 4 RP Yes 2LT-428 2 PRZR (CHNL III-BLU)LVL XMTR 18 3 RP Yes Yes 2LT-461 21 STM GEN LOOP A CHNNL I-RED LVL XMTR 18 4 RP Yes Yes 2LT-762 U2 RVLIS HEAD FULL RANGE TRN B D/P XMTR 18 3 EM 2LT-763 22 RX VSL HEAD DYNAMIC RNG TRN B D/P XMTR 18 3 EM Yes A-24

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie Island Unit 2 - SWEL 1 EqimnTag Tai Decito ls1Function2 Class, Safety ytm 3 Anchorage? Dfre? Cmet System Verify 2LT-920 21 RWST LVL XMTR 18 1,2,3 EM Yes 2LT-921 21 RWST LVL XMTR 18 1,2,3 EM Yes 2NR3 NIS RACK III (BLU) 2NR3 20 1 NI Yes IPEEE Enhanced 2PT-469 21 STM GEN MN STM HDR (CHNL II-WHI) P XMTR 18 4 MS 2PT-479 22 STM GEN MN STM HDR (CHNL IV-YEL) P XMTR 18 4 RP 2VC-28-2 22 CHG PMP DISCH RELIEF 7 1,2,3 VC B-2 CONTROL PANEL B-2 20 1,2,3,5 BM IPEEE Enhanced B25/LOAD BUS 25 SFGDS LOAD SEQUENCER CABINET 20 1,2, 3, 4,5 EA Yes SEQ CAB BUS 211 BUS 211 480V SWITCHGEAR 2 1,2, 3, 4, 5 EB Yes Risk significant BUS 221 BUS 221 480V SWITCHGEAR 2 1,2, 3, 4, 5 EB Yes Risk significant BUS 222 BUS 222 480V SWITCHGEAR 2 1,2, 4, 5 EB Yes BUS 26 BUS 26 4.16KV SWITCHGEAR 3 1,2, 3, 4, 5 EA Yes Risk significant CV-31060 22 TD AFW PMP TRIP THROTTLE CV 7 4 AF A-25

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie Island Unit 2 - SWEL 1 Equipment Description Class' Safety 2 System 3 Verify Tag Function Anchorage? Deferred? Comments CV-31419 22 TD AFW PMP RECIRC/L-O CLG CV 7 4 AF CV-31457 22 DD CLG WTR PMP JCKT CLR OUTL CV 7 1,2, 3, 4, 5 CL CV-39413 22/24 FCU CLG WTR SUPPLY CV 7 5 ZX CV-39417 22 CRDM SHRD CLG COIL SPLY CV 7 5 ZX Yes IPEEE Enhanced CV-39419 21 CRDM SHRD CLG COIL SPLY CV 7 5 ZX Yes IPEEE Enhanced D-2 CONTROL PANEL D-2 20 4 BM IPEEE Enhanced E-2 CONTROL PANEL E-2 20 4 BM IPEEE Enhanced EM-B2 EVENT MONITORING RACK EM-B2 20 2, 4, 5 EM Yes MCC 2A1 MOTOR CONTROL CENTER 2A BUS 1 1 4 EB Yes Yes MCC 2K1 MOTOR CONTROL CENTER 2K BUS 1 1 1,2, 3, 4, 5 EB Yes Yes Risk significant MCC 2K2 MOTOR CONTROL CENTER 2K BUS 2 1 1,2, 3, 4 EB Yes Yes Risk significant, IPEEE Enhanced MCC 2L2 MOTOR CONTROL CENTER 2L BUS 2 1 1,3, 5 EB Yes Yes MTR 211K-12 21 D5DSL GEN BLDG SPLY FAN 9 1,2,3,4,5 EB A-26

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie Island Unit 2 - SWEL 1 Equipment Description Class 1 Safety 2 System3 Verifyage? Tag Anchorage? MTR 211K-1 3 21 D5 DSL GEN BLDG RETURN FAN 9 1,2, 3, 4, 5 EB MV-32020 22 SG MS SPLY TO 22 TD AFW PMP MV 8 4 MS MV-32030 22 TD AFW PMP SUCT CL SPLY MV 8 4 CL MV-32148 21 FCU CLG WTR OUTL ISOL MV B 8 5 CL MV-32156 24 FCU CLG WTR OUTL ISOL MV A 8 5 CL Yes MV-32160 21 CC HX CLG WTR INLET MV 8 3 CL MV-32180 SUMP B TO 21 RHR PMP TRN A (OUTSIDE) MV 8 3, 4 SI MV-32246 22 AFW TO 21 SG MV 8 4 AF MV-32248 21/22 AFW TO 21 SG ISOL MV 8 4 AF MV-32383 21 MD AFW PMP DISCH TO 21 SG MV 8 4 AF. MV-32384 21 MD AFW PMP DISCH TO 22 SG MV 8 4 AF MV-32389 24 FCU CLG WTR INLT ISOL MV 8 5 CL PNL 21 DISTRIBUTION PANEL 21 14 1,2, 3, 4, 5 DC Yes Yes Risk significant, IPEEE Enhanced A-27

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie Island Unit 2 - SWEL 1 Class Safety AncoVerify Deferred? Comments Tag Description Function2 System Anchorage? PNL 211 INSTRUMENT BUS II PANEL (WHI) 211 14 1,2, 3, 4, 5 IP Yes Risk significant PNL 213 INSTRUMENT BUS III PANEL (BLU) 213 14 1, 2, 3, 4, 5 IP Yes Risk significant PNL 22 DC DISTRIBUTION PANEL 22 14 1,2,3,4,5 DC IPEEE Enhanced PNL 234 AC DISTRIBUTION PANEL 234 14 3 EX Yes PNL 34F PANEL 234 TRANSFORMER 4 3 EX 234/XFMR PNL 235 AC DISTRIBUTION PANEL 235 14 3 EX Yes PNL 25F PANEL 235 TRANSFORMER 4 3 EX 235/XFMR PNL 253 DC DISTRIBUTION PANEL 253 14 2, 3,5 DC Yes Yes PNL 261 DC DISTRIBUTION PANEL 261 14 4, 5 DC Yes PNL 262 DC DISTRIBUTION PANEL 262 14 3, 5 DC Yes PNL 2EM DISTRIBUTION PANEL 2EM 14 1, 2, 3, 4, 5 EM Yes Yes RS-21-11 21 SG MS HDR RELIEF 7 4 MS SV-33389 21 FCU DISCH TO CNTMT DOME CD-34080 SV 8 5 ZC Yes A-28

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table A-2: Prairie island Unit 2- SWEL 1 Eq ip et ,IDesc.riOtion, Ia

             .....                  ::*                    a as '    Ia "-!:

Safety System3 Anchragef ",Deferred? .... *-" Comments

Tag FUnction Anch .... *.

SV-33777 22 DD CLWP DSL JCKT CLR OUTL SV 8 1,2, 3, 4, 5 CL SV-37464 U2 TRN A CHLD WTR/CLG WTR ISOL SV 8 5 ZX Yes SV-37466 UNIT 2 TRAIN A CHILL WTR/CLG WTR ISOL SV 8 5 ZX Yes SV-37904 D5 ENG 1 AUX DESK 1B START AIR SV 8 1,2, 3, 4, 5 D5 A-29

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report 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. 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 A-30

Prairie Island Nuclear Generating Plant - Unit 2 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 2 Completed SWCs Checklist Equipment Tag Equipment Description Anchorage Confirmed? Status (IN (Y/N) 50200 D5 DSL GEN VERTICAL PANEL Yes Y 55320 D5 DSL GEN ENG 1 AUX DESK Yes Y 70350 22 DD CLWP LCL PNL Yes Y 053-322 22 DD CLG WTR PMP DSL OIL DAY TNK Yes Y 21 BATT 21 BATTERY (& BATTERY RACK) Yes Y 211 M/XFMR 211 M TRANSFORMER No Y 212M/XFMR 212M TRANSFORMER No Y 217-111 21 MD AFW PMP L/O CLR No Y 22 BATT 22 BATTERY (& BATTERY RACK) Yes Y 22 BATT CHG 22 BATTERY CHARGER Yes N 221 M/XFMR 221M TRANSFORMER No Y 234-031 D5 DSL GEN No Y 234-032 D6 DSL GEN No Y 235-081 22 CLG WTR PMP DSL JCKT CLG HX No Y B-1

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table B-i: Prairie Island Unit 2 Completed SWCs Anchorage Status Checklist Equipment Tag Equipment Description Confirmed? (tIN) (Y/N) 245-042 22 CHG PMP Yes Y 245-071 21 SI PMP Yes Y 245-122 22 CC PMP Yes N 245-201 22 TD AFW PMP Yes Y 245-392 22 DD CLG WTR PMP Yes Y 246-031 D5 1A START AIR RCVR No Y 253-361 21 D5 FO DAY TANK Yes Y 253-401 D5 ENG 1 HT EXPANSION TANK No Y 274-031 121 SWGR RM UNIT CLR No N 274-162 TRN B EVENT MON RM UNIT CLR No Y 2ASG1 SAFEGUARD RELAY RACK 2ASG1 Yes Y 2EG-15-2 D5 1B START AIR RCVR RELIEF No Y 2LT-762 U2 RVLIS HEAD FULL RANGE TRN B D/P XMTR No Y 2LT-763 22 RX VSL HEAD DYNAMIC RNG TRN B D/P XMTR Yes Y 2LT-920 21 RWST LVL XMTR Yes Y 2LT-921 21 RWST LVL XMTR Yes Y 2NR3 NIS RACK III (BLU) 2NR3 Yes Y 2PT-469 21 STM GEN MN STM HDR (CHNL II-WHI) P XMTR No Y 2PT-479 22 STM GEN MN STM HDR (CHNL IV-YEL) P XMTR No Y 2VC-28-2 22 CHG PMP DISCH RELIEF No Y B-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table B-i: Prairie Island Unit 2 Completed SWCs Checklist Equipment Tag Equipment Description Confirmed? Status (YIN) B-2 CONTROL PANEL B-2 No Y CV-31060 22 TD AFW PMP TRIP THROTTLE CV No Y CV-31419 22 TD AFW PMP RECIRC/L-O CLG CV No Y CV-31457 22 DD CLG WTR PMP JCKT CLR OUTL CV No Y CV-39413 22/24 FCU CLG WTR SUPPLY CV No Y D-2 CONTROL PANEL D-2 No Y E-2 CONTROL PANEL E-2 No Y EM-B2 EVENT MONITORING RACK EM-B2 Yes N MTR 211 K-1 2 21 D5 DSL GEN BLDG SPLY FAN No Y MTR 211K-1 3 21 D5 DSL GEN BLDG RETURN FAN No Y MV-32020 22 SG MS SPLY TO 22 TD AFW PMP MV No Y MV-32030 22 TD AFW PMP SUCT CL SPLY MV No Y MV-32148 21 FCU CLG WTR OUTL ISOL MV B No Y MV-32160 21 CC HX CLG WTR INLET MV No Y MV-32180 SUMP B TO 21 RHR PMP TRN A (OUTSIDE) MV No Y MV-32246 22 AFW TO 21 SG MV No Y MV-32248 21/22 AFW TO 21 SG ISOL MV No Y MV-32383 21 MD AFW PMP DISCH TO 21 SG MV No Y MV-32384 21 MD AFW PMP DISCH TO 22 SG MV No Y MV-32389 24 FCU CLG WTR INLT ISOL MV No Y B-3

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table B-i: Prairie Island Unit 2 Completed SWCs Checklist Equipment Tag Equipment Description Confirmed? Status (YIN) PNL 211 INSTRUMENT BUS II PANEL (WHI) 211 Yes Y PNL 22 DC DISTRIBUTION PANEL 22 No N PNL 234 AC DISTRIBUTION PANEL 234 Yes Y PNL 234/XFMR PANEL 234 TRANSFORMER No Y PNL 235/XFMR PANEL 235 TRANSFORMER No Y PNL 261 DC DISTRIBUTION PANEL 261 Yes Y PNL 262 DC DISTRIBUTION PANEL 262 Yes Y RS-21-11 21 SG MS HDR RELIEF No Y SV-33777 22 DD CLWP DSL JCKT CLR OUTL SV No Y SV-37904 D5 ENG 1 AUX DESK 1B START AIR SV No Y B-4

PRopRIETARY iNFoRmATieii wiTiTiiieh F;ROm P~uBLie BisehesbRE Sheet 1 of 8 Status: YMI NEIl UO Seismic Walkdown Checklist (SWC) Equipment ID No. 50200 Equip. Class1 (20) Instrumentation and Control Panels and Cabinets Equipment Description D5 DSL GEN VERTICAL PANEL Location: Bldg. D5/D6 Floor El.

Room, Area D5 CNTRL 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 Y NiO of the 50% of SWEL items requiring such verification)?

The actualnumber of welds per side exceeds the minimum requirementsof the drawing, so it is acceptable. They are both on the inside and the outside.

2. Is the anchorage free of bent, broken, missing or loose hardware? YZ NM] UI] N/AEI

3. Is the anchorage free of corrosion that is more than mild surface YED NO] UI] W/AD oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YN NEI UM] N/AE]

There are approximatelysix small cracks, but they do not challenge the embedded plate capacity.

5. Is the anchorage configuration consistent with plant documentation? Y[K N[:) UF1 N/AE1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

The SWEs referenceddrawing X.HIA W-2610-16-4, revision H, for anchorageverification.

6. Based on the above anchorage evaluations, is the anchorage free of YN NEUI-]

potentially adverse seismic conditions? I Enter the equipment class name from Appendix B: Classes of Equipment.

i'10"i J!'ttt ttTtkttT t V t' tj tqtfVVV+/-' +/- t:)N wITIIIIGLD PROM PUBLIC DISCLOSURE Sheet 2 of 8 Status: YZ NO U[ Seismic Walkdown Checklist (SWC) Equipment ID No. 50200 Equip. Class, (20) instrumentation and Control Panels and Cabinets Equipment Description D5 DSL GEN VERTICAL PANEL Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Yrg NO U- N/AM 8, Are overhead equipment, distribution systems, ceiling tiles and lighting, YE Nr Ur- N/AO 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/A-

10. Based on the above seismic interaction evaluations, is equipment free YZ N U-I 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? All five panel doors were opened. The five panels are one contiguous cabinet. Some light terminal strip (foreign material)was found inside panel 5. The foreign materialis a plastic cable cover used in the cabinet and is not a seismic concern. The SWEs also noted a testjack in panel 3, which is by design. Comments (Additional pages may be added as necessary) Evaluated by: Walter ordievic Date: Kyle Kriesel

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SU1-NSI1 -WITHHOLD1- FROM PUBLIC DISCILOSUR The remaining pages are withheld from public disclosure.

PROPFRIETAFRY ... ...... .. .... ... ... ...... ...... . .. ........... Sheet I of 3 Status: Y- NEI ur-Seismic Walkdown Checklist (SWC) Equipment ID No. 55320 Equip. Class .(20)Instrumentatfon and Control Panels and Cabinets Equipment Description D5 DSL GEN ENG I AUX DESK Location: Bldg. D5/D6 Floor El.

Room, Area 05 ENGINE 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)?

The SWEs verified the anchorage of the steel skid to the frame. There were ten 1/2" anchors, five on the front and five on the back, as well as, eight anchors,four each on either side.

2. Is the anchorage free of bent, broken, missing or loose hardware? YN Nn UD N/AQ

3. Is the anchorage free of corrosion that is more than mild surface YZ NO UO N/AE]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NEI U1- N/AO

5. Is the anchorage configuration consistent with plant documentation? Y0 NC1 UFC 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 YZ NEO U potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

     "R-*r  RIETFARY  "i-      PI*T  ,                  'ITh'rLD       FROm P'TiTi'T T      EI"s      ,LOsuRE Sheet 2 of 3 Status: YO N7 UE Seismic Walkdown Checklist (SWC)

Equipment ID No. 55320 Equip. Class, (20) tnstrumentation and Control Panelsand Cabinets Equipment Description Q5 QSL GEN ENG 1 AUX DESK Interaction Effects

7. Are soft tafgets free from impact by nearby equipment or structures? YM NEI UII N/A[]

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NE uHE N/Ar and masonry block walls not likely to collapse onto the equipment?

There are no block walls and everything in the vicinity is seismically braced.

9. Do attached lines have adequate flexibility to avoid damage? YE NEI U[E N/A[1

10. Based on the above seismic interaction evaluations, is equipment free YO1 NO Ur of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y1 N[] U[

adversely affect the safety functions of the equipment? There are missing cap nuts on the south side of the cabinet, This is a mnintenance issue and not a seismic issue. CAP 1356613 has been initiated to evaluate this observation. In addition, WR 84624 was initiated to address this observation. Commeents (Additional pages may be added as necessary) The front doors were opened and no anomalies were found. Evaluated by: 'WalterDiordievic Kyle Kriesel /4t

                                                  ..I~r                           Date:

Date: /0 9L 42. 2-,./ 1.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report 01011101

               ~I II~I~AhILILf~I VVI-I-FIFI
                                 ~ Frt~f~RBr~iIDE1%

1--U r"JULzi-I~l(l~li' I In=I-The remaining pages are withheld from public disclosure.

P17CWPTEIFAP'. TNT~TmATpiei W+/-93ff2Tfleh EPREM PUTT-eT, f)[i SeOSR Sheet 1 of 9 Status: Y[ NEI- U'- Seismic Walkdown Checklist (SWC) Equipment ID No. 703*0 Equip, Class, (20) instrumentation and Control Panels and Cabinets Equipment Description 22 DD CLWP LCL PNL Location: Bldg. SSCN Floor El.

Room, Area 22 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 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 YZ NIO of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YN NEI UI] N/AU'

3. Is the anchorage free of corrosion that is more than mild surface Y0 NO ULJ N/AU1 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YN ND UEI N/AU-

5. Is the anchorage configuration consistent with plant documentation? YZ NO U- N/AO (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Outline Drawing PD-24258 was used for verification. 6, Based on the above anchorage evaluations, is the anchorage free of YZ NEI U0 potentially adverse seismic conditions? IEnter the equipment class name from Appendix B: Classes of Equipment.

PROPRiETARY RiFeRrATTioN WIETIH4OLD FROM? -PUBLI~ DI~saLOsuRE Sheet 2 of 9 Status; YIZ Nn-z UnI Seismic Walkdown Checklist (SWC) Equipment ID No. 70350 Equip, Class', (20) Instrumentation and ControlPanels and Cabinets Equipment Description 22 DD CLWP LCL PNL Interaction Effects

7. Are soft targets free firom impact by nearby equipment or structures? YZ NO1 U0 N/AO The pendant light adjacent to the conduits supplying power to the cabinet will not strike the conduit in a seismic event. It is approximately 10" away.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YlN NEI UEU N/AU and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? Y9 NE! UO 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 i . Have you looked for and found no other seismic conditions that could Y0 NE! UOE adversely affect the safety functions of the equipment? Opened reardoor of the panel and no anomalies were observed. Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordlevic Date: 4 i,,- Nrttce M iorv Bru~ces 11 Lor

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report C11 IL14ftI %A1IITrLIfJeI r% DIf hI flU nID IMIIt ru1a"I ^01 Inc r-;Lz; Wr-1 VV F; =; =Z. i-. sý17-Ai =iLF-- =LF-Zý,kzl iý-, =i The remaining pages are withheld from public disclosure.

PRepRiET-ARY iNFeRMATIGN WIThh1GOLD FROM PUELIC DISCLOSGURE Sheet 1 of 5 Status: Y[ NOI U-] Seismic Walkdown Checklist (SWC) Equipment ID No. 053-322 Equip. Class1 (21) Tanks and Heat Exchangers Equipment Description 22 DD CLG WTR PMP DSL OIL DAY TNK Location: Bldg. SSCN Floor El. ý Room, Area 22 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 ofjudgments and findings. Additional space is provided at the end of this checklist for documenting other comments. Anchoral!e

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? YN NEI U-- N/AEl

3. Is the anchorage free of corrosion that is more than mild surface YOI NEI] U-] N/AL]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YM NEI U[-] N/AZ1 The bottom anchors were inspected as well. No cracks were observed.

5. Is the anchorage configuration consistent with plant documentation? YN NEI UE] N/AZ1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Anchorage configurationmatches Drawing X-HIA W-48-12.

6. Based on the above anchorage evaluations, is the anchorage free of YN N[:] U--

potentially adverse seismic conditions? IEnter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY !NFeRMATFIEW P.'I"r'r'I'WITTTOLD FRT M PUDLIC DIGCOU*TGTRE*- Sheet 2 of 5 Status: YZ NE I U-] Seismic Walkdown Checklist (SWC) Equipment ID No. 053-322 Equip. Class' (21) Tanks and Heat Exchangers Equipment Description 22 DD CLG WTR PMP DSL OIL DAY TNK Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YM NEl U-1 N/AEl

8. Arc overhead equipment, distribution systems, ceiling tiles and lighting, YN NI] UE1 N/All and masomy block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YlZ NEi UE- N/AEl

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 YGI NEI UE1 adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce Lorv J 4~4122 Date: /0 i/..I. Dileep Cheropalle C-V. t/.bzIee-f .. PYA 2A

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETdARY C NFecPlit(SW N w+/-TiiiieOLD FRem PUDLiC+/- Bie3eLsbRH Sheet 1 of 7 Status: YZ Nn U-Seismic Walkdown Checklist (SWC) Equipment ID No. 21 BATT Equip. Class' (15) Batteries on Racks Equipment Description 21 BATTERY (& BATTERY RACK) Location: Bldg. TURB Floor El. Room, Area 21 BATT 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)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YE NEI U] N/AL

3. Is the anchorage free of corrosion that is more than mild surface YO* N-] U-- N/A[]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NO UL] N/A]

5. Is the anchorage configuration consistent with plant documentation? YN NO UI- N/A-]

(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.) Referenced SQUG SEWs to verify anchorage.

6. Based on the above anchorage evaluations, is the anchorage free of Y NEI U-'

potentially adverse seismic conditions? 1 Enter the equipment class name from Appendix B: Classes of Equipment.

I l:t ;: It ;:~r'L'~I I ;rj I I: It; 1.1; l;t r'I II II I; S1 I .t 1~1 Sheet 2 of 7 Status: Y[ NR- U[-- Seismic Walkdown Checklist (SWC) Equipment ID No. 21 BATT Equip. Class1 (15) Batterieson Racks Equipment Description 21 BATTERY (& BATTERY RACK) Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO Nil UI- N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN Nil] UrI N/Ar-and masonry block walls not likely to collapse onto the equipment?

There is a single light fixture above the Battery Racks. It is not a seismic concern.

9. Do attached lines have adequate flexibility to avoid damage? YZ NEI U[] N/AZ1

10. Based on the above seismic interaction evaluations, is equipment free YS 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 Nil Ur-1 adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Dileep Cherlopalle C "y. ¢N-u-A2-- Date: -- Bruce Lory -- A.. Date: - - ,-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 3 Status: YE] NE] UE] Seismic Walkdown Checklist (SWC) Equipment ID No. 21 1M/XFMR Equip. Class' (04) Transformers Equipment Description 211 M TRANSFORMER Location: Bldg. D5/D6 Floor EI. ý Room, Area 211/212 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 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 NO 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/A[]

It is welded to embedded plates.

3. Is the anchorage free of corrosion that is more than mild surface YE NE] U0 N/At]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YI NE U-' N/AD

5. Is the anchorage configuration consistent with plant documentation? YE' N[: Ut] N/Au (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 YER NEI UE' potentially adverse seismic conditions?

I Enter the equipment class name from Appendix B: Classes of Equipment.

PRGPR!BT-AR* INFE)RMATFIE)N PRORITA WIiTHHOLD9 IFORATON FROW PYUBLIC D)I-SCLOSURE Sheet 2 of 3 Status: YX1 NO U0 Seismic Walkdown Checklist (SWC) Equipment ID No. 21 1IMXFMR - Equip. Class' (04) Transformers Equipment Description 21 IM TRANSFORMER Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YS NO] Ur] N/A]

The "S" hooks on the light fixtures are closed, so they are not a seismic concern.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y23 NE] UI- N/AU and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? Y[ NEI U-- N/A[]

10. Based on the above seismic interaction evaluations, is equipment free Y NOl U-of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YN NE] 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 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRQPR ,9",-ARY !NFOR'4ATrTOfN WITHhlDT T PREW P TT'--iT C T" lTl uR Sheet 1 of 3 Status: YM NEI UI-1 Seismic Walkdown Checklist (SWC) Equipment ID No. 212M/XFMR Equip. Class' (04) Transformers Equipment Description 212M TRANSFORMER Location: Bldg. D6/D6 Floor El,

Room, Area 211/212 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 YE No of the 50% of SWEL items requiring such verification)? 2, Is the anchorage free of bent, broken, missing or loose hardware? YZ NC- UE[ N/AO It is welded to embedded plates.

3. Is the anchorage free of corrosion that is more than mild surface Y[* NE UE- N/AUl oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NE U' N/AU

5. Is the anchorage configuration consistent with plant documentation? YE NEI U' N/A[0 (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 or Iqulpment,

PPPPflIP T flMA Tfl WTj TTTTATPT ;21;AA 4:) 111T r, lTT-)T PýTTP.TP fT Sheet 2 Of 3 Status: Y0 NE* U*I Seismic Wal kdown Checklist (SWC) Equipment ID No, 212M/XFMR, Equip. Class' (04) Transformers Equipment Description 2I2M TRANSFORMER Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YN NEI UE- N/AEI The "S"hooks for lighting fixtures are closed, so there is no seismic concern.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UEJ N/AE and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YN NEI UQI N/A[I

10. Based on the above seismic interaction evaluations, is equipment free YN NEI UEI of potentially adverse seismic interaction effects?

Other Adverse Conditions 11, Have you looked for and found no other seismic conditions that could YZ NEI UTE adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) I_ _ _ Evaluated by: Walter DIordlevic Date: 0 L/ Kyle Kriesei I Date:1'A

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE

PROPR*IETARY INFORW".TION WITIhhOLD FROM PUBLIC DISCLOSURE Sheet I of 4 Status: YZ NO Ij Seismic Walkdown Checklist (SWC) Equipment ID No. 217-I.1, ,1, Equip. Class, (21)Tanks andHeat Exchangers Equipment Description 21 MD AFW PMP L/O CLR Location: Bldg. TURB Floor El.

Room, Area 21 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 Y-] No of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YO NCI UO N/AC3 3, Is the anchorage free of corrosion that is more than mild surface Y[ NEI U[D N/AC3 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NC U-- N/AC]

5, Is the anchorage configuration consistent with plant documentation? YCI NC" UC 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 UC potentially adverse seismic conditions?

Enter the equipment class name from Appendix B: Classes of EquipmenL.

PROPRIETPARY INFORKATION WITHHOLD FROM PUBLIC DISCLOg URE Sheet 2 of 4 Status: Y[ NEI U[E Seismic Walkdown Checklist (SWC) Equipment ID No. 217-111 , Equip. Class' (21)Tanksand Heat Exchanaers Equipment Description 21 MD AFW PMP t/O CL. Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y0 NE) U12 N/Atj

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NO U'- 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 UI- N/AD1

10. Based on the above seismic interaction evaluations, is equipment free YE) Nl UI-of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZI NDi UD adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Waiter Diordievic Date: [1f4 /4/ Wye Kriesel Date: /t2,4,

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUN*S1 - WITHHlOlLD FROM PUI IBIC DISCL OSR The remaining pages are withheld from public disclosure.

WITHHOLD ,,,.l-L FRM PUBLIC BisL*I Sheet 1 of 5 Status: YN NOl UD Seismic Walkdown Checklist (SWC) Equipment ID No. 22 BATT Equip. Class' (15) Batteries on Racks Equipment Description 22 BATTERY (&BATTERY RACK) Location: Bldg. TURB Floor El.

Room, Area 22BATT 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. Anchoraze

1. Is the anchorage configuration verification required (i.e., is the item one YO NC3 of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? Y[j NEI UE- N/A-

3. Is the anchorage free of corrosion that is more than mild surface YE NM UI-1 N/AE oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Y0 NEI UrJ N/AOl

5. Is the anchorage configuration consistent with plant documentation? Y[ NEI UEI N/A0l (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 Nil UEJ potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

11'! I I 'I I I 11 I uii I I I: It ii I I'! J:I I I I: I I I I r :1 II:: I :1:: Sheet 2 of 5 Status: Y[K NE] ur-Seismic WalkdowEChecklist (SWC) Equipment ID No. 22 BATT Equip. Class, (15) Batteries on Racks Equipment Description 22 BATTERY (&BATTERY RACK) Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YN NE] UE] N/AFI

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NO] Ut-1 N/A[l and masonry block walls not likely to collapse onto the equipment?

SWEs observed safety related block walls numbers 6 and 7. There is no seismic concern.

9. Do attached lines have adequate flexibility to avoid damage? Y0 NE] UE] N/AEl

10. Based on the above seismic interaction evaluations, is equipment free Y Nr-I UE]

of potentially adverse seismic interaction effects? The "S"hooks for lighting fixtures throughout the room are mostly closed, but not all of the way. The chain links are thin enough to possibly slip through, SWEs recommend that the "S"hooks be fully closed, even though none of them are over the batteries themselves. CAP 1352001 has been initiated to 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. Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NErI UIE adversely affect the safety functions of the equipment?

TIDrnDT~'7D7T TA\n(~J WTT~l.T TfM P~TTrTy~TnTP Sheet 3 of 5 Status: YIM NIl U-I Seismic Walkdown Checklist (SWO) Equipment ID No. 22 BATT - Equip. Class' (15) Bgatteries on Racks Equipment Description 22 BATTERY (&BATTERY RACK.) Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievic Date: (/6A r-/ll Dennis Zercher le ,-42-.-Z,41 ,2-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS' WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRGPR!BT-AR* !NFGRMAT!eN WITIIIICLD FR.M Pb"bLIC .iS.....SURE Sheet i of 4 Status: YEI N[Z Ur-Seismic Walkdown Checklist (SWC) Equipment ID No. 22 BATT CHG Equip, Class' (16) Battery Charqersand Inverters Equipment Desctiption 22 BATTERY CHARGER Location: Bldg. TTURB Floor El.

Room, Area 22BATT 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 Y21 NEI of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YZ NEI UE- N/A[]

3. Is the anchorage free of corrosion that is more than mild surface Y0 NE U[-1 N/A[]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NEl UE[ N/AE]

5. Is the anchorage configuration consistent with plant documentation? Y0l NEI UE N/A[E (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

The anchorsare 314" Hiltis. Amtek Drawing NX-236971-1 was used for verification.

6. Based on the above anchorage evaluations, is the anchorage free of YZ NEI UE[

potentially adverse seismic conditions? 'Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIET-ARY !NFGRýýT-IN wiTriO FROm PbefLie DiOC ~es Sheet 2 of 4 Status: YEI NZ Uli Seismic Walkdown Checklist (SWC) Equipment ID No. 22 BA TT CHG Equip, Class' (16) Battery Charaersand Inverters Equipment Description 22 BATTERY CHARGER Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YE NOI UE2 N/AE?

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Yo[J No U'- N/Arl and masonry block walls not likely to collapse onto the equipment?

There are open "S"hooks for lighting fixtures above the battery charger, CAP 1352001 has been initiatedto evaluate the open "Sohooks 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.

9. Do attached lines have adequate flexibility to avoid damage? Y0 NE-] U[- N/Ajl

10. Based on the above seismic interaction evaluations, is equipment free Y[] NN UED of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YO NE UE adversely affect the safety functions of the equipment?

The SWEs opened both doors and found nothing of concern, Comments ,(Additional pages may be added as necessary) Evaluated by:. Date: (0 0-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PU1BLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Y +/-ild+/-' W +/-'+/-'ttttdt3t) t tttJM 1' 0 tJ f3 t t'- 1:1t ý t=tZý n tJ ltn Sheet 1 of 4 Status: YE* N'-1 U-Seismic Walkdown Checklist (SWC) Equipment ID No. 221M/XFMR Equip. Class' (04) Transformers Equipment Description 221M TRANSFORMER Location: Bldg. D5/D6 Floor El.

Room, Area 221/222 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 YEI N12 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/AUJ

3. Is the anchorage free of corrosion that is more than mild surface Y[ NEI UE N/AU oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YER NEI UEJ N/AU3 There is one crack near the interiorweld, but it is judged to not adversely affect the capacity of the embedded plate. It is not a seismic concern.

5. Is the anchorage configuration consistent with plant documentation? YE NEI UE1 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 UE3 potentially adverse seismic conditions?

x Enter the equipment class name from Appendix B: Classes of Equipment.

PRGPR1ET-AR* !NFGP4MAT-!GN WThTHOL ' FROM TT PUBLIC D *ITT'URE Sheet 2 of 4 Status: YZ NEI UEý Seismic Walkdown Checklist (SWC) Equipment ID No. 221M/XFMR Equip. Class' (04) Transformers Equipment Description 221M TRANSFORMER Interaction Effects

7. Are soft targets firee fi'om impact by nearby equipment or structures? Y0 ND UD N/AD1

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YNJ NDI Ui- N/AD and masonry block walls not likely to collapse onto the equipment?

There are open "S"hooks for some of the lighting fixtures, but this will not pose an interactionhazardto the transformer. It is not a seismic concern, but CAP 1352001 has been initiated to evaluate the 'S" hook observations noted during these walkdowns. Off of CAP 1352001, WR 83556 has been initiated.

9. Do attached lines have adequate flexibility to avoid damage? YZ NDI U-- N/ADl

10. Based on the above seismic interaction evaluations, is equipment free YN NrD 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- UD adversely affect the safety functions of the equipment?

The transformerdoes not need to be opened as it has no doors. Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievic Date: A~ z~&i+/-- Dl~nni~ .* rnher 1g. Dennis Zq her

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

PROPRIETFARY NOMAII WITHHOLED PROM PUB~LIC DiCCLOS)URE Sheet 1 of 7 Status: YZ NE] U[] Seismic Walkdown Checklist (SWC) Equipment ID No. 234-031 Equip. Class' (17) Engine-Generators Equipment Description D5 DSL GEN Location: Bldg, D5/D6 Floor El.

Room, Area D5 ENGINE 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. I. Is the anchorage configuration verification required (i.e., is the item one Y[3 NZ of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YR NE UO N/AE

        *The engine blocks are anchored with ten anchors each, five perside.

The generatoris anchored with eight anchorseach, four per side. See comment in checklist for D6 diesel generatorregardingshroud anchorage.

3. Is the anchorage free of corrosion that is more than mild surface YE NEI UO N/A0 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YIE NEI U- N/A-

5. Is the anchorage configuration consistent with plant documentation? YE NE UE N/AR (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 U0 potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

PRGR!BT-iA12* 1ULIGP44".19 W1 T-11'ULI R? 1I9U1B PUB E3+/- (U+/- UILULbUHUX Sheet 2 of 7 Status: Y]* Ni-] U-] Seismic Walkdown Checklist (SWC) Equipment ID No. 234-031 Equip, Class', (17) Engine-Generators Equipment Description D5 DSL GEN Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YlZ NIO U1' N/AD The overhead electric heaters are rod hung and ductile.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YU NO U- N/AD and masonry block walls not likely to collapse onto the equipment?

With the exception of the electric heaters, everything is seismically braced.

9. Do attached lines have adequate flexibility to avoid damage? YZ NEI UD N/AD

10. Based on the above seismic interaction evaluations, is equipment free YZ NEI U-I of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Yr ND UDI adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

LLUIU tkr4LU1fIt. +/-N A1I(J+/-4 V41'IIUL i1tU1 UJ JIn t2

                                                                                +/-'it9          tU+/-+/- tinb   ti Sheet 1of 2 Status: YO[ NEI UE" Seismic Walkdown Checklist (SWC)

Equipment IDNo. 234-0 32 Equip, Class' (17) Enoine-Generators Equipment Description 06 DSL GEN Location: Bldg. D5/D6 . Floor El.

Room, Area D6 ENGINE 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 YOI N10 of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YZ NEI UE] N/AE1 The leveling screws were missing, but they are not a part of the positive anchorage screen,

3. Is the anchorage free of conrosion that is more than mild surface YO Nrl UO N/AO oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Y9 NEI UOI N/A[j

5. Is the anchorage configuration consistent with plant documentation? YLI ND 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 YO NO" UCO potentially adverse seismic conditions? ' Enter the equipment class name from Appendix B: Classes of Equipment.

pRePRI;BTARY RiFGP44AT-9iGN OrITrr O"D " R P"TIC T E*TIcCLOSR "iiseile"*ET Sheet 2 of 2 Status: YNI NEIU-Seismic Walkdown Checklist (SWC) Equipment ID No. 234-032 Equip. Class" (17) Enoine-Generators Equipment Description D6 DSL GEN Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI U7J N/AO

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[ 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? Yf@ NO UO N/AQ

10. Based on the above seismic interaction evaluations, is equipment free Y Nn U-I of potentially adverse seismic interaction effects?

OtherAdverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NEI UL adversely affect the safety functions of the equipment?

1. The guard between the engine and the generatoris noe anchored to the floor.

Site engineering has reviewed this observation and concluded there is no seismic concern. Pleaserefer to the table containedin Appendix F for the disposition of this observation.

2. The tie wraps managing the cable hamesses appearacceptable. It Is not a seismic concern.

Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievic Date: 1.-5 1 it- . 11qnnnl.Q 7,*rvh.qr ~ -~-7~ 4.~- /17 .,. z9 7 - V ej' / "-

PRE)PRIET-AR4 INFE)RMAT-iEW PROPP ~~~ wiETAPiii3 WTIIODtRem FUDEie f3siOCLOOURH INOTITTU Sheet 1 of 7 Status: YIZ NEI U[- Seismic Walkdown Checklist (SWC) Equipment ID No. 235-081 Equip. Class' (21) Tanks and Heat Exchangers Equipment Description 22 CLG WTR PMP DSL JCKT CLG HX Location: Bldg. SSCN Floor El. ý Room, Area 22 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 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 YD NE of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YjZ ND Ut- N/AD'

3. Is the anchorage free of corrosion that is more than mild surface YE NEI Ut1 N/AEl oxidation?

4. Is the anchorage firee of visible cracks in the concrete near the anchors? Y] NO UI1 N/AD

5. Is the anchorage configuration consistent with plant documentation? YE- 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 YE NEI UE]

potentially adverse seismic conditions? ' Enter the equipment class name from Appendix B: Classes of Equipment.

PRO)PRIET-AR" i"iOGRM*TI"T?- wii1FiiOLD, FRO~m PUB~iCe Di~sCLOZuRB Sheet 2 of 7 Status: Y[ NR Ui-Seismic Walkdown Checklist (SWC) Equipment ID No. 235-081 Equip. Class' (21) Tanks and Heat Exchangers Equipment Description 22 CLG WTR PMP DSL JCKT CLG HX Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YH NEI U[I N/AEl

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YS NEI U'- N/ALE and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YN N[E] U-- N/ALE

10. Based on the above seismic interaction evaluations, is equipment free YN 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 NEI ULI adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce Lorv J Date: /0 - "Z.3- (-2-- Dileep Cheropalle c.J.d'~J-~ZJ-2. 10 - ;Zq- -

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUN1SI- IAl1.THHOL*lD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

wIET-iiieL3 FROm PUBLnie BIOCLO~esR Sheet 1 of 8 Status: YN NO- UOF Seismic Walkdown Checklist (SWC) Equipment ID No. 245-042 Equip. Class' (05) Horizontal Pumps Equipment Description 22 CHG PMP Location: Bldg. AUX Floor El. ý Room, Area 22 CHRG 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. Anchora2e

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 NE UD- N/A[l

3. Is the anchorage free of corrosion that is more than mild surface YZ NEI U-1 N/A[l oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NEI U-- N/AD-

5. Is the anchorage configuration consistent with plant documentation? YO 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 SWEs referenced SQUG SEWs for anchorage verification. They were able to see three bolts per side and the 4th bolt is in a contaminatedarea.

6. Based on the above anchorage evaluations, is the anchorage free of YN NEI UW1 potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

PRO)PRIETARY !NFGR?4A1F!GN wiT-iiiLD FROm UDIC7Bi DI~sCLOOesu Sheet 2 of 8 Status: YZ N-- U[-] Seismic Walkdown Checklist (SWC) Equipment ID No. 245-042 Equip.Class' (05)HorizontalPumos Equipment Description 22 CHG PMP Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YN NEI UI- N/Al]

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[9 NEI Ur] N/A[l and masonry block walls not likely to collapse onto the equipment?

There are two open "S" hooks on the light fixture. It will not impact the pump because the pump is not in the zone of influence. CAP 1352001 has been initiated to evaluate all of the open "S" hooks identified during these walkdowns. In addition to writing this action request, WR 83556 has been initiatedto address these observations.

9. Do attached lines have adequate flexibility to avoid damage? YZ NEI UEr N/AI-

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 YZ NEI U[--]

adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) The SWEs noticed tools on the angle iron bracket on the wall. This bracket is not supporting any equipment. Plantpersonnel removed the foreign material. Evaluated by: Dileep Cherlopalle c-- V -M;J g-_ Date: Io- 2-- (J Rnruc M. Lorv 16-2q 6-29 Bruce M Lorv 4~ge~p ~

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNnnSI- I.AUMTHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 1I Status: YZ N[-D U[-] Seismic Walkdown Checklist (SWC) Equipment ID No. 245-071 Equip. Class' (05) HorizontalPumps Equipment Description 21 SI PMP Location: Bldg. AUX Floor El. ý Room, Area 21/22 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 YO N[]

of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YM N[-] UD- N/AD-

3. Is the anchorage free of corrosion that is more than mild surface YMJ NDI UD1 N/AD1 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NEI UD- N/AD1

5. Is the anchorage configuration consistent with plant documentation? YE 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.)

Referenced drawing XH-1001-155. SWE's verified ten 1"anchorbolts.

6. Based on the above anchorage evaluations, is the anchorage free of YO NEIUD potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRI' "!INERMATIT-N TARY.T wiTrITTI rL FRem PuBLiC ** +/- hlsORr Sheet 2 of 11 Status: YZ NEI U-Seismic Walkdown Checklist (SWC) Equipment ID No. 245-071 Equip. Class, (05) HorizontalPumps Equipment Description 21 SI PMP Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YED NO UE- N/AEl

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y[ NEI UI1 N/AEl and masonry block walls not likely to collapse onto the equipment?

The light fixture above 21 safety injection pump has two open "S" hooks. SWEs judged that it is credible, but is not significantand the safety injection pump is not adversely affected. CAP 1352001 has been initiated to 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.

9. Do attached lines have adequate flexibility to avoid damage? Y[9 NO ULJ N/AE-

10. Based on the above seismic interaction evaluations, is equipment free YZ NEI UEl of potentially adverse seismic interaction effects?

The room heater is in contact with the unistrut which is supporting the tubing from the 21 S1 pump. It is credible but not significant. SWEs judge this potential seismic interactionas acceptable since interaction is ductile and seismic displacements are small. Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YN NEI UI-adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Dileep Cherlooalle C--V 'rid"§241 Date: ý 0 - 2.6 Q,rn AA I Lu ~ 5V~. L.Lfl V ~ 180- 'f Date: 10-z-qz...

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Pt'rOPr I lir"*. T Y Nr OiT*r- r WT'r TT*O r--ROm ' " I"T r Sheet 1 of 20 Status: YEI NO U7 Seismic Walkdown Checklist (SWC) Equipment ID No. 245-122 Equip. Class' (05) Horizontal Pumps Equipment Description 22 CC PMP Location: Bldg. AUX Floor El. ý Room, Area 12/22 CC 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 YZ NEI of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YZ NI] U'I N/ADl

3. Is the anchorage free of corrosion that is more than mild surface YN NEI U-1 N/AL]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NIl UE3 N/AL]

5. Is the anchorage configuration consistent with plant documentation? YZ NIl U-1 N/All (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Referenced drawing XH- 105-3 for anchorageverification.

6. Based on the above anchorage evaluations, is the anchorage free of YZ NEIU[:]

potentially adverse seismic conditions? I Enter the equipment class name from Appendix B: Classes of Equipment.

PPCPP ETA7Yi NI~iUGMAIEUN W4ITIIIIULL) FREW LILZJUL. tUIJL+/-Z Uý Sheet 2 of 20 Status: Y[- NZ U-- Seismic Walkdown Checklist (SWC) Equipment ID No. 245-122 Equip. Class' (05) HorizontalPumps Equipment Description 22 CC PMP Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ N[:] UE] N/A[E The glass oilers are soft targets but the SWEs judged light fixture cannot fall and impact the glass oilers. There is no seismic concern.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YE NO U-I N/AE and masonry block walls not likely to collapse onto the equipment?

1. Both of the "S" hooks holding the light fixture above the 22 CC pumps are open. The power cord is taped and seems to be able to support the light fixture. The light fixture is in contact with the "L" column and it is possible that the light may break during seismic motion.

CAP 1351916 has been initiatedto evaluate this observation. In addition to writing this action request, WR 83541 has been initiated to address this observation.

2. The CC Pump collection barrelis tied with rope to the unistrut. The barrelhas a note attached that references CAP 1317022 and WO 74792.

CAP 1351901 has been initiatedto evaluate this observation. WR 83539 has been initiated to address this observation.

3. There is duct tape on the bottom of the rigging beam above the CC pump. It is a housekeeping issue, and not a seismic concern.

CAP 1351913 has been initiatedto evaluate this observation.

9. Do attached lines have adequate flexibility to avoid damage? YZ NEI U[:] N/AE-

10. Based on the above seismic interaction evaluations, is equipment free YE NO UE[

of potentially adverse seismic interaction effects? Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NMUE]

adversely affect the safety functions of the equipment?

PRO.PRIET-ARY !NFGRT IETTN WIT'* fhLD FRO/M . UTi*CE. B*.S......URH Sheet 3 of 20 Status: Y[Ii NO U[] Seismic Walkdown Checklist (SWC) Equipment ID No. 245-122 Equip. Class' (05) Horizontal Pumps Equipment Description 22 CC PMP Comments.(Additional pages may be added as necessary) Evaluated by: Bruce M. Loa Date: /0 -z- /Z Dileep Cheronalle tn 2-- \2---" p

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUrE The remaining pages are withheld from public disclosure.

PRO)PRIETARY 1NFGRO~PJ~iEN WITHHOLDfi PROM PUBLICe Bfsi3CLO RE Sheet I of 2 Status: YiZ ND UM Seismic Walkdown Checklist (SWC) Equipment ID No. 245-201 Equip. Class, (05) Horizontal PFumgs Equipment Description 22 TD AFW PMP Location: Bldg. TURB Floor El, ý Room, Area 22 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 Y0 NO of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? Y9 N[3 U[3 N/AD

3. Is the anchorage free of corrosion that is more than mild surface YZ NEI UQ] N/ADJ oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YS1 NDI U[i 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,) Anchorage is in accordancewith SEWS (A-46) documentation.

6. Based on the above anchorage evaluations, is the anchorage free of YZ NEI UO potentially adverse seismic conditions?

'Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRI.T.ARY. iFePl..Ti. N wiT.... O... . FRem FUDLIC DIOCLO-s LE Sheet 2 of 2 Status: YN Nn-J U-Seismic Walkdown Checklist (SWC) Equipment ID No. 245-201 Equip. Class, (05) HorizontalPumps Equipment Description 22 TD AFW PMP Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y(0 NO Ur N/AO Fluorescentlight located west of TD AFW pump has open "S' hook on one chain but the other chain will prevent light from falling on the pump.

CAP 1352001 has been initiatedto evaluate this observation, In addition to the action request, WR 83556 has been initiatedto address this observation.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NO U-1 N/A-and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YZ NEI UI N/AL 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 YZ NE ur-adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) Evaluated by: Walter DiordievIc Date: .. ____ Dennis Zercher A Dennis Zercher

PRO)PRIETARY 1iiFE)RMAT18N WITHHOLDB FREM Pb1BIC+/- Bi~e3SbLZE Sheet 1of 13 Status: YE N- U--] Seismic Walkdown Checklist (SWC) Equipment ID No. 245-392 Equip. Class' (06) Vertical Pumps Equipment Description 22 DD CLG WTR PMP Location: Bldg. SSCN Floor El. Room, Area 22 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 NEl of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YN NDI UD- N/ADI

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? YM NDI UD N/AD-

5. Is the anchorage configuration consistent with plant documentation? Y0 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.)

This was verified based on SQUG Seismic Evaluation Worksheet (SEW).

6. Based on the above anchorage evaluations, is the anchorage free of YZ NE] UD potentially adverse seismic conditions?

'Enter the equipment class name from Appendix B: Classes of Equipment.

i-1I 1Zi- L 1l'

                   . A IL    L.............. i  &' -~   i ii j~     AJ   .L      I....

Sheet 2 of 13 Status: Y NEI- Ut-l Seismic Walkdown Checklist (SWC) Equipment ID No. 245-392 eEquip. Class (06) Vertical Pumps Equipment Description 22 DD CLG WTR PMP Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YE NEI UI' N/A[l

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YJZ Nil U[-1 N/A[l and masonry block walls not likely to collapse onto the equipment?

The light baris being held by two "S"hooks. One of the "S"hooks is open. If the light bar were to swing, it might hit the pump. Although this potential seismic interactionmight be credible, it is not significant since the pump would still be able to perform its intended safety function. CAP 1351884 has been initiatedto evaluate this observation. In addition to writing this action request, WR 83533 has been initiatedto addressthis observation.

9. Do attached lines have adequate flexibility to avoid damage? YZ NO ULI N/AEl

10. Based on the above seismic interaction evaluations, is equipment free YE NEl UE1 of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YN NEI Ul adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce M. Lorv Date: /1 -2) - /-.l Dileeg Cheropalle c- J- t cf _

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUN~SI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRGPRIBTAI:Y 1NFEPJ'ATIQN wiT.i.iOLD .R.m UBLi .... i.... Sheet Iof 4 Status: Y[J NE- UEý

  -Seismic Walkdown Checklist (SWC)

Equipment ID No, 246-031 Equip. Class' (21) Tanks and Heat Exchanders Equipment Description D5 1A START AIR RCVR Location: Bldg. D5/D6 Floor El. Roomn, Area D5ENGINE 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 YE1 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/AE-There are six anchors to the floor and they are braced to an embedded plate In the wall.

3. Is the anchorage free of corrosion that is more than mild surface Y9 NE UE] N/AE oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors7 YO NEI UE N/AE

5. Isthe 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 YZ NEI UE potentially adverse seismic conditions?

'Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETFARY RiFEPa4ATIEN wiThhOLDE3 FRO~m PuEiCe DiOCLO~suRER Sheet 2 of 4 Status: YN NO U-Seismic Walkdown Checklist (SWC) Equipment ID No. 246-031 Equip. Class1 (21) Tanks and Heat Exchangers Equipment Description 05 IA START AIR RCVR Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI UO N/AC

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y0 NC UC"I N/AC and masonry block walls not likely to collapse onto the equipment?

A rod hung heateris ductile and will not interact with the air system.

9. Do attached lines have adequate flexibility to avoid damage? Y[ NCI UE N/AC The air line Is seismically supported.

10. Based on the above seismic interaction evaluations, is equipment free Y21 NEI UC of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NCI UC adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievlc //Uý Date: /c. */S / L* Kyle Kriesel Date:

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

Sheet I of 4 Status: YZ NO UEI Seismic Walkdown Checklist (SWC) Equipment ID No, 253-361 Equip. Class' (21) Tanks andHeat Exchangers Equipment Description 21 D5 FO DAY TANK Location: Bldg. 05/D6 Floor El,

Room, Area D5 FUEL OIL 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)?

There are two saddles and each of them has eight 1"diameter anchors.

2. Is the anchorage free of bent, broken, missing or loose hardware? Y[ NO] U[1 N/AD

3. Is the anchorage free of corrosion that is more than mild surface YE NEI U-1 N/A[]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YC9 NEI U[1 N/AD There is one crack to the groutpad surroundingthe anchorage,but not through the groutpad. It is acceptable.

5. Is the anchorage configuration consistent with plant documentation? YM NO U[] N/An (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

SWEs referenced drawing NF-118015 ('plan F') for anchorage verification.

6. Based on the above anchorage evaluations, is the anchorage free of YER NEI UO potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

Sheet 2 of 4 Status: Y[R NO UF] Seismic Walkdown Checklist (SWC) Equipment ID No. 253-361 Equip. Class, (21)-Tanks and Heat Exchangers Equipment Description 21 D5 FO DAY TANK Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI U-- N/An

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NE UrW N/AC and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YZ NW U[ N/ACl

10. Based on the above seismic interaction evaluations, is equipment free YZ NW U[]

of potentially adverse seismic interaction effects? Unit heater,UH-21 1, is well'secured to the RIC wall. Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NM UW adversely affect the safety functions of the equipment?

The fire protectionpiping is is well supported. Comments (Additional pages may be added as necessary) Evaluated by: WalterDQ[ordevic /1*~~ Date: / -__ __-/_ Kyle Kriesel Z 11

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report (211klSl IAIITHHOIL

FRO PU*I II DISCLOSUrE The remaining pages are withheld from public disclosure.

PROPRIET-ARY !NFGRMAT-!e WIT-HHOLD3 P-ROM PUBiIC- BlDInSCLOZ Sheet I of 4 Status: Y[Z NEI U[- Seismic Walkflown Checklist (SWC) Equipment IDNo. 253-401 Equip, Class, (21) Tanks and Heat Exchangers Equipment Description 05 ENG i HT EXPANSION TANK Location; Bldg. D5/D6 Floor El.

Room, Area 05 MECH 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 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 Yo Nf* of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YN NEI UC N/AE]

3. Is the anchorage free of corrosion that is more than mild surface YZ NE UE- N/AE oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NE UE N/AE

5. Is the anchorage configuration consistent with plant documentation? YE NE1 UE1 N/A@

(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 UE-potentially adverse seismic conditions?

I Enter the equipment class name from Appendix B: Classes of Equipment.

-PROPRIETARY !NFECRýT!ECH WIETITTIO FREW P76B31 DSCLODGURE-EC-Sheet 2 of 4 Status: Y0 ND] U'- Seismic Walkdown Checklist (SWC) Equipment ID No. 253-401 Equip, Class' (21) Tanks and Heat Exchancers Equipment Description 05 ENG I HT EXPANSION TANK Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YM NO UO N/A[D

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ ND UD N/AD and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YNJ NE UE N/AE

10. Based on the above seismic interaction evaluations, is equipment free Y[K NEI UO of potentially adverse seismic interaction effects?

The fire protection piping with mechanical couplings is seismically braced, so it Is acceptable. Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y0Z NE UD adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordlevic LILV+/-Z Date: /3 S/

                                                                                                        . L.

Kyle Krlesel /,Lf Date: ,2,/W,(Z.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

nn' TIM/In MI rr1-W lii IA Ifi liii I I' I Sheet 1of 5 Status: YVI NO UL* Seifmc.WalkdoWn Cbecki~st (SWC) Equipment D)No. 2Z4-031 .Equip, Class'. (0) Air /-i ndiers 1Hquiprnent Description 121 SWi M UNIT MLR Location-, Bldg, UR-B FloorE 1.ý ýooni Area BUS 121 MArnufaoturor, Model, Etc. (optional but meommended) Instractions for Completing Checklist This ohcaklist may be used to dacurnerit the restilt8 of the Sai~mic Walkdowii of an item of equipment on the SWEL, Vie space below eacoh of the following questions m~ay b~e used to record the results ofiudginents, and f~indings. Additional space Isprovided at the end of this abecklist for doouitnutIng other commennts.

1. fe the anchorage configuration verification required (L~e., Isthe item one YQI NR oftha 50% of SWEL Items~ roquIrIng such verIfication)?

2, Is the anchorage free of bei~t, broken~, missing or loose hardwar? YCR NO UQ N/AD 3, is the anch~orage free of con-osionithat is moe Than mnild surface YO NEI U0 N/AQ oxidationi?

4. Is the anoheiorgo free of.visille oraoks hithe concrete near the anchors? YZ NO UD N/ACT

5. 18 the anchorage configumdton oorsisoent with plant daomnintation? YO NQ UEJ N/A (Note- Tfhis question only appliae iftbe item Isone cof the 50% far wlitob an anchoraige conflgmiation verification is required.)

6. Baood on the above anchorage evaluatiops, isthe anchiorage free of Y NIJO potentially adverse seismi[c conditions?

I.

  'Entorth cqu~piprnonclaiss name from AppeiidlxB: Cim~os of~quipmen'at.

 . PRepRiETARY               RiFeRMATiGN                 POITr'rIWITHHOLD PROM         P-,  L-TC   DI"TCLOTSURF3 8heet 2 of 5 Seismic Walkdown Checkisit (SWC)

Equipment M No, 27"-31 -- quip. Class' (10)AIr)-ndlors Equipmneit D~escription 121 SW2 R MUNIT CLR

     .ntoraetiong  )gtfets 7, Are soft targets fAee from impact by liearby equipment or structures?           Yn NEI 130 N/A[]

8. Are overhead equipment, distribution systerm, oellng tiles and lighting, YIN NEYlC 11] AD and masoity blook walls not likely to collapse onto the equipment?

The odJaoant fluorescent fight Is not a oredlble hazard. 9, Do attaohed lines have adoquate flexfbility to avoid damtige? YOJ NO TJtJ NAD

10. Based ott the above soismio intoraotion evaluations, is eq*uipment free Y19 NEI U1 or potentially adverse seismio interaction effects?

it Is adjacent to block wall number 25, which is safety related and not 4 selsmIc concern. Other Adyeiwse Coiultlrns I1, IHave you looked for and found no other seisitc conditions that could YUI2I K UiO adversely affect the safety functions of te equipment? The supply and returnline aer laterelly unsuppofted, and could potentialyf over stress the nozzle (partlcularify(he copperportfion it; the cooling radiator), Slie engneerang has reviewed this observationand conafuded there Is no seismic concern. Piease referto the table contafn ed Ih Appendix F for the desposition of this observation, t Cownunt (Additionalpages may be addod as necossary) EvoLouafed by: ler~b Date, -aL ( Dennis Zwrohei Date:.f~.-~

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

ta-rMTTTT\T Th 1-'Tlrhf ThýTTfT -rfý ThT e'r'r fC'%

                                                                                                          "T T7-)T PROPRTZET-ATZ          INFGR?4AT-ON Sheet 1 of 2 Status: Y[          NI- UL-Seismic Walkdown Checklist (SWC)

Equipment ID No. 274-162 Equip. Class1 (10) Air Handlers Equipment Description TRN B EVENT MON RM UNIT CLR Location: Bldg, TURB Floor El. ý 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 YO1 N of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YO NDI U-] N/AD

3. Is the anchorage free of corrosion that is more than mild surface YO NEI UF- N/AD oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NDI UD-N/ADl

5. Is the anchorage configuration consistent with plant documentation? YD- NI UD- 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 NE UD-potentially adverse seismic conditions?

1Enter the equipment class name from Appendix B: Classes of Equipment.

EIRE)PR+H1J3ARY IENFE)RiOUýIFIGN PROPRIEARY WI[FHHOLD 3I TNFR~TIONFRorl PUB1C LOUR Sheet 2 of 2 Status: YZ NEI UI-1 Seismic Walkdown Checklist (SWC) Equipment ID No. 274-162 Equip. Class' (10) Air Handlers Equipment Description TRN B EVENT MON RM UNIT CLR Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NEI UE- N/AEl

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI UM 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 U-- N/AZ Supply and return lines are laterally unrestrainedand may subject cooler nozzle to large movement.

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.

10. Based on the above seismic interaction evaluations, is equipment free YN NEI UI' of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YED NE US-adversely affect the safety functions of the equipment?

Comments.(Additional pages may be added as necessary) Evaluated by: Dileep Cherloalle Date: %o- 6-1' Bruce Lo0 Date: 16/ "2_.

PROTPRIET-ARr4, iNRr*T*T- N WITTHHOT. FRG P"3l'C1.DZl, B*T" UR' Sheet 1 of 12 Status: YE NF-- UI-Seismic Walkdown Checklist (SWC) Equipment ID No. 2ASG1 Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description SAFEGUARD RELAY RACK 2ASG1 Location: Bldg. TURB Floor El. ý 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 YZ NE1 of the 50% of SWEL items requiring such verification)?

There are two 1/2" diameter anchorsin this panel, which is acceptable.

2. Is the anchorage free of bent, broken, missing or loose hardware? YO NO U-- N/AEl

3. Is the anchorage free of corrosion that is more than mild surface Y[ NEI U- N/All oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NEI U- N/ADl

5. Is the anchorage configuration consistent with plant documentation? YE NEI UO N/AED (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. Anchorage described as having 24 1/2" diametershell anchors (12 each side) for entire lineup of 2ASG2, 2ASG1, 2ARP1 thru 5, 2AMR1 and2EH1 thru 2EH3. The anchorageis verified.

6. Based on the above anchorage evaluations, is the anchorage free of YU NEIUE1 potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

PROPRIET-ARY INPORMATIGN wi-T-iiOLD3 FRO~m PUDLBEi- DIOOLOJue Sheet 2 of 12 Status: YE NEI ULI Seismic Walkdown Checklist (SWC) Equipment ID No. 2ASG1 Equip. Class' (20) Instrumentation and Control Panels and Cabinets Equipment Description SAFEGUARD RELAY RACK 2ASG 1 Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI Ur- N/AL

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO N[I U-] N/AL and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YE NEL UL N/AL

10. Based on the above seismic interaction evaluations, is equipment free YE NF-L UE-of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y[ NL ULI adversely affect the safety functions of the equipment?

SWEs inspected internalcomponents and did not find any loose or missing mounting hardware. Comments (Additional pages may be added as necessary) Evaluated by: Bruce M. Lory Date: / Q!-f 12-Z rWlmn 1'hMrI^ MI/M E .1 C- I fl tAV...%PI f to - \ 'ý- 1 - -

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS1I _WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet I of 3 Status: YZ NE] U[] Seismic Walkdown Checklist (SWC) Equipment ID No. 2EG-15-2 Equip. Class' (07) FRuid-OperatedValves Equipment Description D5 18 STARTAIR RCVR RELIEF Location: Bldg. D5/D6 Floor EI. ý Room, Area D5 ENGINE Manufacturer, Model, Etc. (optional but recommended) Instructions tbr 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 NN of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YE NO UE N/AZ

3. Is the anchorage free of COITOSiOn that is more than mild surface YO NEI UC N/A2 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NO UE N/AR

5. Is the anchorage configuration consistent with plant documentation? YE NO UD 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 YG NO EU potentially adverse seismic conditions?

Enter the equipment class name from Appendix B: Classes of Equipment.

PRE)PRIET-ARY !NFeRfiARýEE)N .O..Y....wiTO PROM PUB..i .. iC.su.. Sheet 2 of 3 Status: YZ NE] Uv-] Seismic Walkdown Checklist (SWC) Equipment ID No. 2EG-15-2 Equip. Class' (07) Fluid-OperatedValves Equipment Description D5 1B START AIR RCVR RELIEF Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI UF N/AD]

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Yt NiO U-] N/AC and masonry block walls not likely to collapse onto the equipment?

The electric heater on rods is ductile, so it Is acceptable.

9. Do attached lines have adequate flexibility to avoid damage? YM NEI UI N/Al]

10, Based on the above seismic interaction evaluations, is equipment firee YO NE] UD of potentially adverse seismic interaction effects? Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YIZ NO Ul]

adversely affect the safety finctions of the equipment? Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievic Date: //i--7-A-/ Kvle KrieP.el Date: l/",Z,"l I"F V

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSJ1I WITHHOLD FROM PU'BLIC DISCLOS'URE The remaining pages are withheld from public disclosure.

PRepRiETARY iNFGRMATieN P~Z~fIET~h W~IT-HHOLD IN'OMATN VPPOH PUB3iC D1ISCLOSURE Sheet 1 of 2 Status: YZ NEI U[ Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-762 Equip. Class' (18) Instruments on Racks Equipment Description U2 RVLIS HEAD FULL RANGE TRN B DIP XMTR Location: Bldg. AUX Floor El.

Room, Area NORTH WEST 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 YDI NEI of the 50% of SWEL items requiring such verification)?

2, Is the anchorage free of bent, broken, missing or loose hardware? YE NO UEJ N/A-

3. Is the anchorage free of corrosion that is more than mild surface Y29 ND1 U- N/AD oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YR NEI UD N/A-There are no cracks through the anchor. It is acceptable.

5. Is the anchorage configuration consistent with plant documentation? YDI ND UO 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 Y0 NO U-potentially adverse seismic conditions?

1 Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETARY .NP.. . AT.ON

                                               ..         WITHH8...      FROW PU.....         DI...3..UR.

Sheet 2 of 2 Status: YZ NE U7 Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-762 Equip. Class' (18) Instruments on Racks Equipment Description U2 RVLIS HEAD FULL RANGE TRN B D/P XMTR Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NO U-' N/AEI

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y0J NEI U'- N/AD and masonry block walls not likely to collapse onto the equipment?

The piping locatedabove equipment is seismically designed

9. Do attached lines have adequate flexibility to avoid damage? YZ NEI UEI NfAt

10. Based on the above seismic interaction evaluations, is equipment free Y0 NR U[

of potentially adverse seismic interaction effects? The fire extinguishers that are adjacentto the instrument rack are properly hung on serviceable brackets. Therefore, it is acceptable. Other Adverse Conditions 11, Have you looked for and found no other seismic conditions that could YED NE"I U0L adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) L. P, V. I t A k

         .,I ItOq*,,.
                      &IAI.U       I,*-                      /1#1911                   /il~ 7Date:t-) 12,f     /'t Dennis Zercher

PPcQPRT:BT-AR* ];Nr-QR4AT-1QN W];T-;RYTq+'+-J +'RH44 Sheet 1 of 2 Status: Y[D NO UHEl Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-763 Equip. Class' (18) Instruments on Racks Equipment Description 22 RX VSL HEAD DYNAMIC RNG TRN B 0/P XMTR Location: Bldg. AUX Floor El.

Room, Area NORTH WEST Manufacturer, Model, Etc. (optional but recommended)

Instnrctions 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? YZ ND UE- N/AL]

3. Is the anchorage free of corrosion that is more than mild surface Y[E NDý UEJ N/AD' oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NEI UD- N/An There are no visible cracks through the anchor,therefore, they are not a seismic concern.

5. Is the anchorage configuration consistent with plant documentation? YE 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.)

6. Based on the above anchorage evaluations, is the anchorage free of YE Nn U-potentially adverse seismic conditions?

I Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETAY INFO TION WIT...OL..D FROm PUBLIi DI sCL..sU.RE Sheet 2 of 2 Status: YZ NEI U[I Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-763 Equip. Class, (16) Instruments on Racks Equipment Description 22 RX VSL HEAD DYNAMIC RNG TRN B DIP XMTR Interaction Effects 7, Are soft targets free from impact by nearby equipment or structures? YO NO Ur N/AD 8, Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ Nti U[] N/All and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YE NDI U[] N/AD3

10. Based on the above seismic interaction evaluations, is equipment free YID NEI Ut]

of potentially adverse seismic interaction effects? The flourescent light above has closed 'S' hooks and fire extinguishers are properly hung on serviceablehooks. There are no seismic concerns. Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y2 NDI Ut adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Wallv Diordievic lvý Date: /O ,t-Dennis Zercher 1-t ( *0. 32 - .,'

Sheet I of 5 Status: Y[ NF U-Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-920 Equip. Class' (18) Instruments on Racks Equipment Description 21 RWST LVL XMTR Location: Bldg. AUX Floor El. ý Room, Area 21/22 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 YN NE]

of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? Y[0 NI] UL] N/A-1

3. Is the anchorage free of corrosion that is more than mild surface YM NEI UI1 N/A-oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YN NEI UW1 N/AZl

5. Is the anchorage configuration consistent with plant documentation? YN NO UiW N/A-1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

Referenced SQUG SEWs for anchorage verification. SWEs verified that there were four anchors and deemed them acceptable.

6. Based on the above anchorage evaluations, is the anchorage free of YED NE UW7 potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

WITTHHOTL PRO T PTUBTTIC I"ET*r "URE Sheet 2 of 5 Status: YZ NE-] U[- Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-920 Equip. Class, (18) Instruments on Racks Equipment Description 21 RWST LVL XMTR Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YN NEI U-I N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NErI Ur N/Arl]

and masonry block walls not likely to collapse onto the equipment? A light fixture has three open "S" hooks. The SWE'sjudged that the light fixture will not impact the transmitter,so there is no seismic interactionconcern. CAP 1352001 has been initiated to 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.

9. Do attached lines have adequate flexibility to avoid damage? YN NEI UL- N/AZ

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 NEI Ur-L adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Dileep Cherlopalle C. -V/xe.l

                                             -.                                     Date:      Ic-  2-A                 Bruce M. Lorv                                                        Date:      i0"2 .- I'

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SIIlI W-I.lr1vTHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

WITTTTOLDT PRTOPRITTARYTRO'*Ts'H FTeT TTT Di"T TT Sheet 1 of 11 Status: Y] NF-1 UL] Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-921 Equip. Class' (18) Instruments on Racks Equipment Description 21 RWSTLVL XMTR Location: Bldg. AUX Floor El.

Room, Area 21/22 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 YO N-]

of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? Y9 NE] U-] N/AF]

3. Is the anchorage free of corrosion that is more than mild surface YZ NE] UE N/AE]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NE] UE] N/AE

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.)

The transmitteris bolted to the plate using the factory mounting hardware. The plate is welded to two 2"x 2"x 1/4" angles. The angles are bolted to the wall using four 1/2" diametershell anchors that are in a 9"x 17.5" bolt pattem per the SQUQ SEWS. There are no seismic or configurationconcerns. IEnter the equipment class name from Appendix B: Classes of Equipment.

EIReEIRfE93ARY -jjjFeRMA931 E)N WIT1111OLD PRORITAR IFOIIA FROM ION PUBELIC 91SCLOE)URE Sheet 2 of 11 Status: Y[ NEI- Uti] Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-921 Equip. Class' (18) Instruments on Racks Equipment Description 21 RWST LVL XMTR

6. Based on the above anchorage evaluations, is the anchorage free of YN NEIUEI potentially adverse seismic conditions?

Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YM NE UED N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YE NEI UI-I 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 UD] N/AZl

10. Based on the above seismic interaction evaluations, is equipment free Y[K NEI UEl of potentially adverse seismic interaction effects?

The cabinet labeled "clean chemical handling equipment" (36"x 24" x 75" high) is stored about 40" from the level transmitteron the other side of the walkway. Its aspect ratio would cause it to fall over into the transmitterif it is not anchored to the wall. CAP 1351219 has been initiatedto evaluate this observation. Site Engineering discovered later that the cabinet is anchored to the wall with two small anchors, which can only be found by opening the cabinet and moving internal contents to see them. Therefore this observation is resolved and there is no adverse seismic condition. Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YE NEI UF-adversely affect the safety functions of the equipment?

q-R-OpRiETARY RIFeRMATiONi wi-,FiiOLD, F;ROMf PUbfIe B Sheet 3 of 11 S;tatus: YZ N-- Ur Seismic Walkdown Checklist (SWC) Equipment ID No. 2LT-921 Equip. Class' (18) Instruments on Racks Equipment Description 21 RWST LVL XMTR Comments (Additional pages may be added as necessary) Evaluated by: Bruce Lorv 4~uLV Date: 16 - 2 "., -/2. Dileep Cherogalle ncA,.t le -zi 10 -

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUJRE The remaining pages are withheld from public disclosure.

PRe RiEsTARY iWalkdowRhTici wiT(SW I-Iý F 4 PA I.II lq *np ............................. W a MMi M Mi I Sheet I of 9 Status: YZ N-- U[] Seismic Walkdown Checklist (SWC) Equipment ID No. 2NR3 Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description NIS RACK Ill (BLU) 2NR3 Location: Bldg. AUX Floor El. ý Room, Area CONTROL ROOM 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? YE NEI UD- N/AD1

3. Is the anchorage free of corrosion that is more than mild surface YE NEI U-1 N/AD-oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NEI UD" N/AD1

5. Is the anchorage configuration consistent with plant documentation? YEJ NEI U-1 N/AD1 (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 SEWs for anchorage verification. They verified four anchorbolts. There is one 1/2" bolt on each comer anchoring the cabinet base frame to the floor.

6. Based on the above anchorage evaluations, is the anchorage free of YH NEIUD potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

      -POPIETArY              INFORMATIO-"N       wiT     OlTr FROm       T'irr "     i"s"Tl'rrf Sheet 2 of 9 Status: YE N-] U[-l Seismic Walkdown Checklist (SWC)

Equipment ID No. 2NR3 Equip. Class, (20) Instrumentationand Control Panelsand Cabinets Equipment Description NIS RACK III (BLU) 2NR3 Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZJ NEI Ur N/AEl

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YS NEI UEI N/AEl and masonry block walls, not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YZ NE UE- N/AE

10. Based on the above seismic interaction evaluations, is equipment free YE NEI UE-]

of potentially adverse seismic interaction effects? Other Adverse Conditions 1 . 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 LorV i~. Date: // 1 Dileep Cherloyalle C -y. \pp A'\.. Date: \\ - \ - \ .--

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUN'SI- WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRepRiETARY +/-NpeRýýTf eN PRPREAR I~RTINW+/-+/-iffffU3LL) Lmm VfRd)M +/-PW5JtJIC tLWtefLU:JtUZL0 Sheet 1 of 4 Status: Y[ NO U'-E Seismic Walkdown Checklist (SWC) Equipment ID No. 2PT-469 Equip. Class' (18) Instruments on Racks Equipment Description 21 STM GEN MN STM HDR (CHNL II-WHI) P XMTR Location: Bldg. AUX Floor El. ý Room, Area SOUTH WEST 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 L. 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 UE] N/AE-

3. Is the anchorage free of corrosion that is more than mild surface YZI NE-1 UI1 N/A[]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NEI U-I N/AE]

5. Is the anchorage configuration consistent with plant documentation? YE- NEI UE1 N/A[

(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 UC-potentially adverse seismic conditions?

Enter the equipment class name from Appendix B: Classes of Equipment,

                    .L'%..TALa+/-r+/-T.1
                        ..L:A                  LN         './-LLf+/-          .L.J                     -- 4=
      /.LI +/-*.*.t..t*.-t.

Q QýAMQL a.3 .I. Z-Xt*..l. J-.L*I ,I.' "*Jt*l"J..t* .I. J_ kJ.l.*l Sheet 2 of 4 Status: Yo Nn U-- Seismic Walkdown Checklist (SWC) Equipment ID No. 2PT-469 Equip. Class' (18) Instruments on Racks Equipment Description 21 STM GEN MN STM HDR (CHNL II-WHI) P XMTR Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YE NEI UI- N/AE

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y23 Nil] Ur- N/Au and masonry block walls not likely to collapse onto the equipment?

The overhead light has one slightly open single.loop hook support on one side. The chain connected does not have enough slack to cause the light to unhook at this end. The SWE's cannotsee the other light hook, but judge that the fixture cannot detatch and fall onto the transmitter.

9. Do attached lines have adequate flexibility to avoid damage? YED Nil UI" N/AE

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 YZ N[-] UE-]

adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) Evaluated by: Bruce Lory Date: I l-/- , Dileep Cherlopalle Dileen~

                                                                      ,:: -hroal   ~ ~~r
                                                                                 -'J. I>                                          10 - 3e) -
                                                                                                                                    'O3c-       IP .-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

L 1PR9PRISTAR* !NF9RýýTIGN 'PRPRETRYINOR~TON wiET-iiOLD FRE~m PuBELIC Bi-seLOesURL Sheet 1 of 5 Status: YE NEI U[-] Seismic Walkdown Checklist (SWC) Equipment ID No. 2PT-479 Equip. Class1 (18) Instruments on Racks Equipment Description 22 STM GEN MN STM HDR (CHNL IV-YEL) P XMTR Location: Bldg. AUX Floor El.

Room, Area NORTH WEST 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)?

2. Isthe anchorage free of bent, broken, missing or loose hardware? YO NOI U- N/A'

3. Is the anchorage free of corrosion that is more than mild surface YUI ND U- N/AO oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE N-- UO N/AD The transmitteris mounted to steel, so there is no concrete to inspect.

5. Is the anchorage configuration consistent with plant documentation? YO NEI 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 U-potentially adverse seismic conditions?

1 Enter the equipment class name from Appendix B: Classes of Equipment.

Sheet 2 of 5 Status: YZ NEI U-] Seismic Walkdown Checklist (SWC) Equipment ID No. 2PT-479 Equip. Class1 (18) Instruments on Racks Equipment Description 22 STM GEN MN STM HDR (CHNL IV-YEL) P XMTR Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NEI U-' N/AL

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YM NDI UD- 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/AL-

10. Based on the above seismic interaction evaluations, is equipment free Y I 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 NDI UD1 adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Dileep Cherlopalle Sv.L> Date: ;o-%9- 12t Bruce Lorv BrceLw 0 7 2.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS!I- WITHHOLD FROM PUBLIC DISCLOSUR

       ,O-PR+/-TARY                    R.TrTII,-          .........       FR.M PU.Bbl.   .*.*ELO.....E Sheet 1 of 4 Status: YN N[n] U[

Seismic Walkdown Checklist (SWC) Equipment ID No. 2VC-28-2 Equip. Class' (07) Fluid-OperatedValves Equipment Description 22 CHG PMP DISCH RELIEF Location: Bldg. AUX Floor El. ý Room, Area 22 CHRG 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 Y-I NO of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? Y-] NO) U-- N/A

3. Is the anchorage free of corrosion that is more than mild surface YE] NEI UL- N/AZ oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Y-I NEI UI] 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 UE]

potentially adverse seismic conditions? IEnter the equipment class name from Appendix 13: Classes of Equipment.

nTnDPIP4=1FT7\Z TNM9lTMT-TAISI WTT1TTTTAT.T PPrAh Sheet 2 of 4 Status: YE NE] U[I] Seismic Walkdown Checklist (SWC) Equipment ID No. 2VC-28-2 Equip. Class' (07) Fluid-OperatedValves Equipment Description 22 CHG PMP DISCH RELIEF Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NO] UL- N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UI1 N/AZ and masonry block walls not likely to collapse onto the equipment?

There are no overhead lighting fixtures in the vicinity.

9. Do attached lines have adequate flexibility to avoid damage? YZ NO] UE1 N/AZ

10. Based on the above seismic interaction evaluations, is equipment free YZ NEI U[I of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YO NE] UE]

adversely affect the safety functions of the equipment? Comments .(Additional pages may be added as necessary) Evaluated by: Bruce Lorv A Date: & - r.?- /- Dileep Cherlopalle C-.Q.-. ~ %0.\

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS- WITHHOLD FROM PUJBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

SiPROPRIETARY INFORMCc ATION - WITHHOLD FROM PUBLIC DISCLOSURE Sheet i of 14 Status: Y[ N[- Ul-Seismic Walkdown Checklist (SWC) Equipment ID No. B-2 Equip. Class1 (20) Instrumentation and Control Panels and Cabinets Equipment Description CONTROL PANEL B-2 Location: Bldg. AUX Floor El. ý Room, Area CONTROL ROOM 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. Thespace 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[- 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-1 N/AD-

3. Is the anchorage free of corrosion that is more than mild surface YO NEI U-I N/AD--

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NEI U-- N/AEl

5. Is the anchorage configuration consistent with plant documentation? Y-I NEI 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 YZ NEI Ur1 potentially adverse seismic conditions?

Enter the equipment class name from Appendix B: Classes of Equipment.

tNfeRMATIeN - WITHHOLD FROm P.UBLI. DISL..suR. k PROPRtETARY Shect 2 of 14 Status: YN N-] U-- Seismic Walkdown Checklist (SWC) Equipment ID No. B-2 Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description CONTROL PANEL B-2 Interaction Effects

7. Are soft targets flee from impact by nearby equipment or structures? YZ NO U0 N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ 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? Y[D NO U-I N/AU

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 YEI NO U0 adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

1. Duct tape was identified behind Panel E-2 at about 8' high between the CVCS letdown and RHR labels.

CAP 1352954 has been initiated to document this observation. Additionally, WR 83785 has been initiatedto remove the foreign material.

2. There is a bent back cover plate for the CVCS letdown monitor. It is located at about 10' high near the CVCS letdown label. The cover plate is non-structuraland is not an adverse seismic condition.

Evaluated by: Bruce M. Lory Date: 16-26--2. Dileep Cherlopalle r-, V - )ý>', I-e-o'e ".' Date: \ o 6 - )-')

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

A'IZpRii3T-A1Y TNii'ORmArEt iO r=Tm m TTTTf* T 1* WY i nut 1 II

f *n*

rm. unJuV. VffSJLL UO..J'Of Sheet i of 3 Status: YZ NO U-- Seismic Walkdown Checklist (SWC) Equipment ID No. CV-31060 Equip. Class, (7) Fluid-OperatedValves Equipment Description 22 TD AFW PMP TRIP THROTTLE CV Location: Bldg. TURB Floor El.

Room, Area 22AFWP 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 YEI No of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YE1 NE U' N/A0Z

3. Is the anchorage free of corrosion that is more than mild surface YEI NEI Ui N/AjZ oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NEI UE N/AZ

5. Is the anchorage configuration consistent with plant documentation? YE NE UI 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 NEJ UEJ potentially adverse seismic conditions?

I Enter the equipment class name from Appendix B: Classes of Equipment.

PRC)PR ET-APY INFE)17MA['IGN wiTiifieDUiKLB F UIm LuaiC t~titjuntjt Sheet 2 of 3 Status: YIZ NEI U-Seismic Walkdown Checklist (SWC) Equipment ID No. CV-31060 Equip. Class, (7) Fluld-OperatedValves Equipment Description 22 TD AFW PMP TRIP THROTTLE CV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y0 NEI UC1 N/AC There are no soft targets.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YM NCi UC1 N/ACI and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YZ NO UC' N/ACI All the lines are rigid and the limit switches are flexible. Therefore, they are acceptable.

10. Based on the above seismic interaction evaluations, is equipment free YO NEI UD of potentially adverse seismic interaction effects?

Other Adverse Conditions 1!. Have you looked for and found no other seismic conditions that could .YM NCI UC' adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessmay) Evaluated by: Wally Diordievic Date: 16 t/ fft-D$snni.Q 7.rceher

                                   .eni      Kece

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

VftTitttfdt3f:J t'ttt:MVf t"ttJt3+/-t:-' tJ+/-tjt:ýt:3(:J:jtftý Sheet i of 5 Status: YZ NEI UEI Seismic Walkdown Checklist (SWC) Bquipment JD No. CV-31419 Equip. Class, (7) Fluld-QOerQtedValves Equipment Description 22 TD AFW PMP RECIRC/L-O CLG CV Location: Bldg, ,TUR . Floor El.

Room, Area 22 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 S WEL, 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 NO of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YD NEI U N/AR

3. Is the anchorage flee of corrosion that is more than mild surface YEJ NEI UE 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 witlh plant documentation? YEI NEI UE- 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 YO NO UE potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

-9PRGPflET-ARY RiFeRMATFION wiE~iihhOL FROm FbLiCi D~ISCLOsuRE Sheet 2 of 5 Status: YN NFJ UE Seismic Walkdown Checklist (SWC) Equipment IT No. CV-31419 Equip. Class' (7) Fluid-OperatedValves Equipment Description 22 TD AFW PMP RECIRC/L-O CLG CV Interaction Effects 7, Are soft targets free from impact by nearby equipment or structures? YM NEI UO N/AO The adjacentfluorescent light supported by strut and conduit will not displace to the extent of the availableclearance, The sprinklerline Is not deemed a seismic hazard. 8, Are overhead equipment, distribution systems, ceiling tiles and lighting, Yo NO UC N/AC and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? Y[0 NC UF' N/AC The copper airline has a long span but not adjudged to be an Inertial displacementconcern.

10, Based on the above seismic interaction evaluations, is equipment flee YO NEI UF of potentially adverse seismic interaction effects? Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NC UC adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Walter D0ord/evic Date: ', / I' Dennis Zercher.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNI - IT.HHOLD FROM PUBLIC DISCLOSrE

PR-e*RiE.TARY i.F.R TI.*.T. WIETffffL FROM PUBLIC DISCLOSURE Sheet 1 of 8 Status: Y[J NEI U-Seismic Walkdown Checklist (SWC) Equipment ID No. CV-31457 Equip. Class1 (7) Fluid-OperatedValves Equipment Description 22 DD CLG WTR PMPJCKT CLR OUTL CV Location: Bldg. SSCN Floor El. Room, Area 22 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 YLI NO*

of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YO ND- UF1 N/AL]

3. Is the anchorage free of corrosion that is more than mild surface Y[D NDI U-] N/A[-

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Y[-- NDI UD- N/As

5. Is the anchorage configuration consistent with plant documentation? YD ND UD 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 ND UE]

potentially adverse seismic conditions? 1 Enter the equipment class name from Appendix B: Classes of Equipment.

VV -.L .£i 'nu I-LL r1k..'.- J11 Lt .L

                                                                                       ý J1j-L_%,

J.I

                                                                                                -   .  -. * . 1ju'3
                                                                                                                ,.#*Ulr'.

Sheet 2 of 8 Status: YZ NEI[ ULI] Seismic Walkdown Checklist (SWC) Equipment ID No. CV-31457 Equip. Class1 (7) Fluid-OperatedValves Equipment Description 22 DD CLG WTR PMPJCKT CLR OUTL CV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NEI UL N/AEl

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UF'D N/AEl and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YZ NEI UI- N/AEl

10. Based on the above seismic interaction evaluations, is equipment free YZ NO UF' of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y[ NE"I UF-adversely affect the safety functions of the equipment?

Comments (Additional pagcs may bc addcd as neccssary) Evaluated by: Bruce Loty A Date: 4-mffi. Dileep Cheropalle .,- t'(e I - k- Date: -

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI n FR-O AWITHHOID Bl *C DI [)ISCl=OQSU The remaining pages are withheld from public disclosure.

7 Plflf1- -17 THTTITM T(h WýTTTTTTflT ) PTQZOAM PTTRT TC(PTC-gTP Sheet 1 of 2 Status: YZ ýNj! UEI Seismic Walkdown Checklist (SWC) Equipment ID No. CV-39413 Equip, Class, (07) Fluid-O,peratedValves Equipment Description Q1/24 FCU CLO WTR SUPPLY CV Location: Bldg, AUX Floor El. Room, Area NORTH WEST 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? YF" NO' UiE] N/A0

3. Is the anchorage free of corrosion that is more than mild surface YE] NO] U- N/A[i oxidation?

4, Is the anchorage free of visible cracks in the concrete near the anchors? YEI NI] UE1 N/AJ9 5, Is the anchorage configuration consistent with plant documentation? YEI NEI UlE- 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 YU ND] UiE-potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment,

nnr~~nnrnmnnxrr~~~rn,\nQ Y rT/Tfl~ '14 D ThT T" Q"Qrt~ T ,* ,L'*.%J.L ,.L*,..L.L*I ...Lt-'X.L*. J. .A.,I.M.L"%J.L*J.'.L&-"X.L -I. *.J.L*I Sheet 2 of 2 Status: Y(E N- UL-Seismic Walkdown Checklist (SWC) Equipment ID No. CV-39413 Equip. Class, (07) Flutd-OQeratedValves Equipment Description 22/24 FCU CLG WTR SUPPLY CV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YN NEI UEI N/AD

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ ND UD N/ADI and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YM NDI UD1 N/AD

10. Based on the above seismic interaction evaluations, is equipment free YN NEI UD1 of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y0 NDI UEI adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: ,WalterDorglev . Date: , / . - Dennis Zercher 67

F PRGPRIBTAR:ýz INFGRFATIGN PROPJEA1Y WIThhOLDE3E IFOMATONFREW PUDLIC- DISC L"'SURH Sheet 1 of 4 Status: Y[ NO UE] Seismic Walkdown Checklist (SWC) Equipment ID No, D-2 Equip. Class' (20X Instrumentationand Control Panels and Cabinets Equipment Description CONTROL PANEL D-2 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 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- NE of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? Y0 NEI UE- N/AIZI D-2 Panel is bolted to support frame and frame is stitch welded to structuralsteel embeds.

3. Is the anchorage fiee of corrosion that is more than mild surface YO NE UE N/AU oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NO UO N/AU

5. Is the anchorage configuration consistent with plant documentation? YrI NE UD 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 YS NE UDI potentially adverse seismic conditions?

I Enter the equipment class name from Appendix B: Classes of Equipment.

       'P~P TflTADV         TbIflflDM~TTflN          WTTTTTTflT.fl  PPC)M    PTTP.T.Tr   flTfl(~T.flflTTflfl Sheet 2 of 4 Status: YZ NEI UI-Seismic WalkdowEChecklist (SWC)

Equipment ID No. D-2 Equip. Class, (20) Instrumentationand Control Panels and Cabinets Equipment Description CONTROL PANEL D-2 Interactioni Effects

7. Are soft targets free from impact by nearby equipment or structures? YN NO UE- N/AL Panel is bolted to adjacentpanels.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YN NEI U- N/AU and masonry block walls not likely to collapse onto the equipment?

Duct work is trapeze rod hung,and is acceptable.

9. Do attached lines have adequate flexibility to avoid damage? YO NEr- UI N/AU

10. Based on the above seismic interaction evaluations, is equipment free YZ NEI UE-1 of potentially adverse seismic interaction effects?

The dust cover (fiberglasstype) side boards on some of the switches in "E"panel have slid out of position. It is not a seismic concern. The SWEs did not see the same issue with the "D"panel. Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YO NEI UO-adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessmay) Evaluated by: Wa//V Diordievic fL~ Date: / Dennis Zercher ".9 10-" Z~ ,

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI - WAIITHHOLD¢I FIR-OIMR PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

VWJV1~IL1~'U~ ii' UV1~L'~.TIUI~ ~I1U11ULL LJ~UI"i £'UIz~L+/-U IJI~AJLU~UXL Sheet 1 of 21 Status: YO NE] U[] Seismic Walkdown Checklist (SWC) Equipment ID No. E-2 Equip. Classi (20) Instrumentationand Control Panelsand Cabinets Equipment Description CONTROL PANEL E-2 Location: Bldg. AUX Floor El.

Room, Area CONTROL ROOM 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? YO NEI UI] N/AL]

3. Is the anchorage free of corrosion that is more than mild surface YO NO] UEI N/AL' oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NE] U-] N/AD

5. Is the anchorage configuration consistent with plant documentation? YE] NEI UL] 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 YE NE] UEI potentially adverse seismic conditions?

Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NO U-] N/AL Enter the equipment class name from Appendix B: Classes of Equipment.

pflRepTETATV TJPOPMA4Q[TTO WTTTTTTCE)Efl PPCeM PUB~lT.T2 DIT-SeCfietflRE Sheet 2 of 21 Status: Y[I NE] U-Seismic Walkdown Checklist (SWC) Equipment ID No. E-2 Equip. Class" (20) Instrumentationand Control Panels and Cabinets Equipment Description CONTROL PANEL E-2

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y2 NEI U- N/AE and masonry block walls not likely to collapse onto the equipment?

The light fixture nearE-2 in the middle section has one open "S' hook out of four hooks. E-2 is not in the zone of influence, therefore it is not a seismic concern. This light fixture was noted during the area walkbys. 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.

9. Do attached lines have adequate flexibility to avoid damage? YG0 NEI UJ N/AU

10. Based on the above seismic interaction evaluations, is equipment free YU 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 Ni] UO adversely affect the safety functions of the equipment?

Comments (Additional pages may beadded as necessary) The SWEs identified the following foreign materials:

1. Duct tape was found on the side of the first monitor,about8' high on the generatorcontrols.

2. A broken tie wrap is inside E-2 and pinned to a diagonalsupport.

3. A tie wrap was found on the edge of a HVAC duct exhaust above E-2.

CAP 1352954 has been initiatedto evaluate this observation. Additonally, WR 83785 has been initiatedto remove the foreign material. In additionto the foreign material,the pig tail of a cable with a multipin connector was found stored on top of the box. It is not a seismic concern, but it is recommended that the site evaluate the condition. CAP 1357129 has been initiatedto evaluate this observation. Addifionally. WR 83785 has been initiatedto remove the foreign material. See Appendix F of report for site engineeringresolutionto comment. Evaluated by: Bruce M. Lory /Y. - A. .- Date: //= 3- tC Dileeo Cherlopalle c..

                                                   "'T -
                                                    .                                Date:    \\ - I     1-V2.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SlUNS - IAITW1£HHO LD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

                    -PRPRITAY   TFOMATOU                 wi~piiOLD3    F-ROm  iUB~Ie     DISeLOsuRE Sheet 1 of 13 Status: Y[J NO UD]

Seismic Walkdown Checklist (SWC) Equipment ID No. EM-B2 Equip. Class' (20) Instrumentationand Control Panels and Cabinets Equipment Description EVENT MONITORING RACK EM-B2 Location: Bldg. AUX Floor El.

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 YO ND-of the 50% of SWEL items requiting such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? Y[ NEI UD- N/AD

3. Is the anchorage free of corrosion that is more than mild surface Y23 NDI UD- N/AD oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YU NDI UrD N/A[-]

5. Is the anchorage configuration consistent with plant documentation? YO NDI U0 N/AD-(Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

SWEs referenced the SQUG SEWs for anchorage verification.

6. Based on the above anchorage evaluations, is the anchorage free of YS ND1UD potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

t'RORIEARYINFRMAION WITHHOLD EReI' PffLIC 5tSttOSURE Sheet 2 of 13 Status: Y[] NZ U-I] Seismic Walkdown Checklist (SWC) Equipment ID No. EM-B2 Equip. Class1 (20) Instrumentation and Control Panelsand Cabinets Equipment Description EVENT MONITORING RACK EM-B2 Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NDI UD- N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NDl UD- N/AD and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? Y[ NDI UDI N/ADI

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 YD- NED UD]

adversely affect the safety functions of the equipment? A mounting screw was discoveredmissing inside the back of this panel in one of the electronic modules. CAP 1353340 was initiatedto evaluate this observation. WR 83890 was also initiated to address this observation. Comments (Additional pages may be added as necessary)

1. The pig tail of the cable lies at bottom of the "EM-B2"event monitoringrack. SWEs judge pig tail cannot affect the function of the panel because it is at the bottom of the panel.

2. The train B event monitoring unit cooler,CS-19144, for PNL 219-1 has four bolt holes in the base plate but only two screws are installed.

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. Evaluated by: Dileep Cherlopalle c-v \ Date: \b ),c9 - I)-- Bruce M. Lorv w* Date: //- 0/-/Z

Prairie Island Nuclear Generating Plant - Unit 2

                                         ' Seismic Walkdown Submittal Report SU1SIlAl'l...."l WIHHL     FROM*l  PUBICIDISC" IIPIiLOSURE The remaining pages are withheld from public disclosure.

PROPRIETARY ]EFERIiPCPJ. ETN W+/-TffmOLD FROM. PUBLICBT DISCLO3RE Sheet i of 3 Status: YZ NEI UDF-Seismic Walkdown Checklist (SWC) Equipment ID No. MTR? 21K-12 Equip. Class' (09) Fans Equipment Description 21 D5 DSL GEN BLLG SPL Y FAN Location: Bldg, D5/D6 Floor El, ý Room, Area D5 MECH 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 NO Uti N/AC It is bolted, using six 1/2" diametersteel bolls, to structuralskid beams which are continuously welded to embedded plates in the floor,

3. Is the anchorage free of corrosion that is more than mild surface YZ NC U[1 N/AO oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NO UE N/AC

5. Is the anchorage configuration consistent with plant documentation? YO NEI UC- 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 YI NO Ul potentially adverse seismic conditions? 1 Enter the equipment class name from Appendix B: Classes of Equipment.

-PROPR-IET-ARY !NFEOP~iATTON WiTUHOLD FROM Pbl2tCe DfseLOsb'E-.I Sheet 2 of 3 Status: Y0J N[] U-Seismic Walkdown Checklist (SWC) Equipment ID No. MTR 211K-12 Equip. Class, (09) Fans Equipment Description 21 D5 DSL GEN BLDG SPL Y FAN Inter ction Effeccts

7. Are soft targets free from impact by nearby equipment or structures? Y0 NEI UE3 N/ADI The fire protection piping with mechanicalcouples areseismically braced,

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI UED 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/AD

10. Based on the above seismic interaction evaluations, is equipment free YO NEI UU 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?

 ýQifl~nmet Additional pages may be added as necessary)
                                                                        /

Evaluated by: WalterDfordlevic Date: A KyLe Krlesel ( D ate: Dae:/ýZ*~ a/, 1A

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS' WITHHOLD FROM PUBLIC DISCILOSUR

PROPRIETARY 1NPORMATIO1N wipiiieiLD FRO~m iPbeLTC qiClsEsuRE Sheet 1 Of 3 Status: YR NOj U-Seismic Walkdown Checklist (SWC) Equipment ID No. MTR 211K-13 Equip. Class, (09) Fans Equipment Description 21 D5 DSL QGN BLDQ RETURN FAN Location, Bldg. D25/D6 Floor El.

Room, Area D5 MEkH 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 YC NO of the 50% of SWEL items requiring such verification)?

There are six 1/2" steel bolts bolted to a steel frame which is welded to structuralsteel.

2. Is the anchorage free of bent, broken, missing or loose hardware? YN NC UO N/AC

3. Is the anchorage free of corrosion that is more than mild surface YO NCI UC- N/AC-oxidation?

4, Is the anchorage free of visible cracks in the concrete near the anchors? YO NC UC N/AC

5. Is the anchorage configuration consistent with plant documentation? YO NC UC NWAS (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 Y9 Nn UC potentially adverse seismic conditions?

I Enter the equipment class name from Appendix B: Classes etf Equipment.

G+RePRIETARY !NFeRMAT+/-E)!+ PROPIETAY WITIH~hIOINO~r.TION PROM4 PUBLIC BISeLOsuRE Sheet 2 of 3 Status: YR NE- U-Seismic Walkdown Checklist (SWC) Equipment ID No. MTR 211IK-13 Equip. Class, (09) Fans Equipment Description 21 D5 MS.GEN BLDG RETURN FAN Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y0 NE U" N/ACl 8, Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI U1 N/AO-and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YN NOI UCI N/AC

10. Based on the above seismic interaction evaluations, is equipment free YZ NEI U[C of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Yz No U0 adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

                                                                    .4 Evaluated by: Walter Diordievic                                                   Date:       0 z/<      I...

KyLe Krlesel I Date:

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SU1S IS ITHHODI I"1 FR-DGOMA.11 PUBI I C rDISCl O-S*Il QR-The remaining pages are withheld from public disclosure.

      -PRepRiET-AfY iiiF-RI4AT-iei                       wiETffIIOL    FROm EuDLICe BDISCLOSURE Sheet I of 3 Status: YZ NEI U--

Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32020 Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 22 SG MS SPLY TO 22 TD AFW PMP MV Location: Bldg. AUX Floor El.

Room, Area NORTH WEST 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] N0 of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YE- NEI U0 N/AZ

3. Is the anchorage free of corrosion that is more than mild surface YD NEI UE1 NWA oxidation?

4. Is the anchorage fi'ee of visible cracks in the concrete near the anchors? YE-1 NEI UE1 N/AN

5. Is the anchorage configuration consistent with plant documentation? YEI NEI U[3 N/A[

(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 U0 potentially adverse seismic conditions?

IEnter the equipment clams name from Appendix B; Classes of Equipment.

PRepRiRTARY iNF8PaPzA!Pi9N ITTTTL PRT-rrT'NEIN FRO)M PUBICIT 1ISCLO"T'UR-Ei Sheet 2 of 3 Status: Yj* NE] U[-] Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32020 Equip. Class' (08) Motor-Operatedand So!enoid-OperatedValves Equipment Description 22 SG MS SPLY TO 22 TD AFWPMP MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YER NO~ ULI N/A[l

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YE NE] U0 N/A[]

and masonry block walls not likely to collapse onto the equipment? The fire protection piping is seismically supported,

9. Do attached lines have adequate flexibility to avoid damage? YN NEI U-I N/AD

10. Based on the above seismic interaction evaluations, is equipment free YZ NEI U0 of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YM Nn- UE]

adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) Evaluated by: Wally Diordievic Date: 4 25 i-9 AAr Dlannis 7archser DennisZerch7

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCILOSUr The remaining pages are withheld from public disclosure.

-PRePR+/-ETARY IIIEoRmATiONf wITHHOLD FReiM PUbiiCn~ Bi-seLO5suE Sheet 1 of 8 Status: Y[ NEI] U[] Seismic Walkdown Checklist (SWC) Equipment ID No, MV'_-32030 Class' (8) Motor-Operatedand S1enoid-Oper ted Vaives

                                                                                                  -0Equip.

Equipment Description 22 TD AFW PMP SUCT CL SPL Y MV Location: Bldg. TURB Floor El. ý Room, Area 22AFWP 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? YCI NE LJ-I N/AsW

3. Is the anchorage fiee of corrosion that is more than mild surface YC NO U1 N/AR oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Y-I NO UEJ N/AO

5. Is the anchorage configuration consistent with plant documentation? YEI NCI UOQ 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 YO NEI UE-potentially adverse seismic conditions?

Enter the equipment class name from Appendix B; Classes of Equipment.

PROPRIET-ARY RiFECRdATION wiTfiiUOLD PRem PuDLin5 BTseLOsuRE Sheet 2 of 8 Status: Y[ NO-] uf-] Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32030 Equip, Classi L8) Motor-Operatedand Solenold-Ovagted VAlves Equipment Description 22 TO AFW PMPSUCT L SPLYMV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI UD N/AEl The pipe support trapeze for the rod support of the turbIne driven auxilliaryfeedwater pump discharge fine may displace (out of the plane of the trapeze) andpotentially strike MV-32030.

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,

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UEO N/AE]

and masonry block walls not likely to collapse onto the equipment? The overhead light will not reachmotor operated valve and Is therefore acceptable. 9, Do attached lines have adequate flexibility to avoid damage? YO NO] UM N/A0

10. Based on the above seismic interaction evaluations, is equipment fee. YZ NEl UO of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YOI NEI Ur adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary)

PROPRIETARY INFCRb*TION*, WITHHOLD FROM PUBLIC DISCLOSURE Sheet 3 of 8 Status: Y[ NO Ui-] Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32030 Equip. Class' (§) Motor-Operatedand Solenoid-OperatedValves Equipment Description 22 TD AFWPMP SUCT CL SPLY MV Evaluated by:, Walter Diordlevic XA - Date: Dennis Zercher Date: ie-23*2*- zt

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

         ~ROPPTflTAP~. T        TMPCPMATTOH              WITHH.L.      FRM PuBhLI      DISCLOSURE Sheet i of 4 Status: YM NF U[-

Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32148 Equip. Class' (08) Motor-Operatedand Solenoid-Overated Valves Equipment Description 21 FCU CLG WTR OUTL ISOL MV B Location: Bldg. AUX Floor El. Room, Area NORTH WEST 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 YEI 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/AN

3. Is the anchorage free of corrosion that is more than mild surface YEI NEI UE] N/A0 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NEI U[L] N/AZ

5. Is the anchorage configuration consistent with plant documentation? YEI NEI UE1 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 YS NEI U[E potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIEETARY RiNPORMAT-lN WITHHEOLD FREW PUDLIC- DIOCLOZSURR Sheet 2 of 4 Status: YZ Nil U-Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32148 Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 21 FCU CLG WTR OUTL ISOL MV B Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y[ NEI U- N/A[-

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NIZI UOi N/AZ and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YN NO U- N/AZ

10. Based on the above seismic interaction evaluations, is equipment free YN N- U' of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YED NZI UZ-adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Dileep Cherlopalle -'). Date: .-.- V~ Bruce Loro 4 A'e*

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

                              +/-Vt Uttr1tft't'ttjN       VVITITITul-Mi  =V111 Pur5rj2:t=

Sheet 1 of 5 Status: Y[I NF- u-] Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32160 Equip. Class' (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description 21 CC HX CLG WTR INLET MV Location: Bldg. AUX Floor El.

Room, Area 11/21 CC 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 YEI NM of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YEI NEI Ul N/AE

3. Is the anchorage free of corrosion that is more than mild surface YEI NO- 11J-1 N/AZ oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YEI NEI UM] N/AZ

5. Is the anchorage configuration consistent with plant documentation? YE] NEI U[:3 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 NEI Uil potentially adverse seismic conditions?

I Enter the equipment class name from Appendix B: Classes of Equipment.

     'PROPRIETARY          INFORA-.TION            WITiiiihLD     FROM PUBLIC DISCLOSURE Sheet 2 of 5 Status: YO NR Ur-Seismic Walkdown Checklist (SWC)

Equipment ID No. MV-32160 Equip. Class, (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 21 CC HX CLG WTR INLET MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI Ur- N/AZI

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ 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 NEI Uil N/All

10. Based on the above seismic interaction evaluations, is equipment free YN NEI UFI of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YI NZ UZ advcrscly affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) byI>ee Evaluated by: Dileep CherlopalleEvaluated~~~~~~ throal ae l Bruce M. Lorv A1-/1 -/1-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FRO.. PUBI.MLIC DISCLOSURE The remaining pages are withheld from public disclosure.

P*ROPRIETARY INPORrLATION - WITHHOLD FROM. PUBLIC DISCLOSURE Sheet 1 of 7 Status: YZ Nn UL-Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32180 Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description SUMP B TO 21 RHR PMP TRN A (OUTSIDE) MV Location: Bldg. AUX Floor El. ý Room, Area 21/22 CNTM SPRAY 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-I N of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YEI NEI UL-- N/As

3. Is the anchorage free of corrosion that is more than mild surface Y-- N[i UI- N/AH oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Y[] N[E UI- N/As

5. Is the anchorage configuration consistent with plant documentation? YEI NEI UE1 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 UE-potentially adverse seismic conditions?

Enter the equipment class name from Appendix B: Classes of Equipment.

I ~PPflPTTflTAPV TNTMI~TTflTJ UT T........ -RO U .bLI SCLOSuRE 3e Sheet 2 of 7 Status: Y[ NEI U[ Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32180 Equip. Class' (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description SUMP B TO 21 RHR PMP TRN A (OUTSIDE)MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YN NEI UrS N/A[

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI US N/AZ and masonry block walls not likely to collapse onto the equipment?

There is an open "S"hook on the light fixture above MV-32180. It is credible, but will not impact MV-32180. 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.

9. Do attached lines have adequate flexibility to avoid damage? YO NEI U-- N/AZ

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 YE NEI US-adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Dileep Cherlopalle c-%i. rý%\eo Date: l/-26-17. Bruce Lorv , . 2 Date: 10"- '< ýZ "2,

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

TpiiifiOL PRer.' PUDLICe BisefLsuRH Sheet i of 2 Status: YO Nn] UE] Seismic Walkdown Checklist (SWC) Equipment ID No, MV-32246 Equip. Class' L8) Motor.Operatedand Solenoid.OperatedValves Equipment Description 22 AFW TO 21 SG MV Location: Bldg. TURB Floor El, 1 Room, Area 22 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 Yn NZ of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YE] NnI U] N/AN

3. Is the anchorage free of corrosion that is more than mild surface YE] NO] UE- N/AN oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE] NE] UO] N/A0

5. Is the anchorage configuration consistent with plant documentation? YE] NE] 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 YZ NOl U potentially adverse seismic conditions? Enter the equipment class name from Appendix B: Classes of Equipment.

f TOPRT *' TE A T...............TI WI TrThhL.. RO... PUrnLI T, DI* CLOCUTRE Sheet 2 of 2 Status: YN NO UM Seismic Walkdown Checklist (SWC) Equipment IDNo, MV-82246 Equip, Class' (M)Motor-Operatedand Solenold.Ooerated Valves Equipment Description 22 AFW TO 21 SC MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y[ NO UU N/As All of the supports and otherequipment are at least 3' away. The soft targets are free from impact.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI UFI N/AD and masonry block walls not likely to collapse onto the equipment?

The cable trays and conduits are ductile. They were evaluatedper USI A-46, The piping is well supported.

9. Do attached lines have adequate flexibility to avoid damage? YZ ND UDI N/AD The conduits have adequate flexibility.

10. Based on the above seismic interaction evaluations, is equipment free YZ ND UO of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NI U0I adversely affect the safety functions of the equipment?

None were observed. Comments (Additional pages may be added as necessary) Evaluated by: WAily OLordi-evic Date: t3 Ir - Dennis Zercher -. ,,l.

Sheet 1 of 5 Status: YM NF- U-- Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32248 Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description 21/22 AFW TO 21 SG ISOL MV Location: Bldg. AUX Floor El.

Room, Area SOUTH WEST 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 YDI NM of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YI NEI U-] N/AH

3. Is the anchorage free of corrosion that is more than mild surface Yr- NEI Ur- N/AN oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? Yr- NEI U-- N/AN

5. Is the anchorage configuration consistent with plant documentation? Y0 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.)

6. Based on the above anchorage evaluations, is the anchorage free of YM NEI UE-potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

PROPRIET-ARY 1NFE)RMAT7IEN WIPIH!EOLD FRO)M Pb'9E31 DI S e08b"E E Sheet 2 Of 5 Status: Y[ NE-] uE-l Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32248 Equip. Class1 (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description 21/22 AFW TO 21 SG ISOL MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YZ NEI UW N/AEI

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI UI- N/AE]

and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YED NEI U- N/AD'

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[ NE] UF-l adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Dileeo Cherlopalle . e . :-. - Date: II - 9 Bruce M. Lorv Bruce M. Lorv JLL3~L~ 11-13-1-1--

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI -WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PREPOPTITPTARY +HJVPTf4AT-+ElN W+THHEW)Efl FREWM PUB13iC: BJILeEL8876RE Sheet i of 5 Status: YE NEI U] Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32383 Equip. ClassI (8) Motor-Operatedand Solenoid-OperatedValves Equipment Description 21 MD AFW PMP DISCH TO 21 SG MV Location: Bldg. TURB Floor El.

Room, Area 22AFWP 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. Anchoraze

1. Is the anchorage configuration verification required (ie., is the item one YEI NZ of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YEI NC] U[3 N/A[

3. Is the anchorage free of corrosion that is more than mild surface Y[ NEI U0- N/A oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NEI UI N/A[

5. Is the anchorage configuration consistent with plant documentation? YE3 NCI UrI N/AE9 (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 N[3 U0 potentially adverse seismic conditions?

Enter the equipment class name from Appendix B: Classes of Equipment.

                                                   ~TRPRETRYINORATON WI93hhOLD3 FREW ?UDLI3C- DIESCLOSURE                   I Sheet 2 Of 5 Status: YZ NE- Ur-Seismic Walkdown Checklist (SWC)

Equipment ID No. MV-32383 Equip. Class1' (8) Motor-OPpratedand Solenoid-OperatedValves Equipment Description 21 MD AFW PMP DISCH TO 21 SG MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NO UED N/AC

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NCI UC N/AC and masonry block walls not likely to collapse onto the equipment?

The fire protection header will not strike the valve.

9. Do attached lines have adequate flexibility to avoid damage? YN NC UCI N/AC

10. Based on the above seismic interaction evaluations, is equipment free YZI NEI UC of potentially adverse seismic interaction effects?

Other Adverse Conditio-ns 1I. Have you looked for and found no other seismic conditions that could Y0 NC" U" adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) Evaluated by: Wlater Diordievic Date: 2-Kle Kriesel, J4ý

                                ,I        Ildýý           I Date:

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FRO,1.1. PUB LRC DIRSCLOSUR The remaining pages are withheld from public disclosure.

     -     CPReEiiTATR          TUWNMtTfI1                   tTTTTTTET.

F* * * *V* FTem

V* * *¸ Bise'TresuTRE

                                                                           * *V*

Pu~nT.Tr * * * *V* V*

Sheet I of 4 Status: YiZ NE] UIj Seismic Walkdown Checklist (SWC) Equipment ID No, MV-3 2 .. Equip. Class1 (8) Motor-Operatedand Solenoid-Operated Valves Equipment Description 21 MD AFW PMPDISCH TO 22 SG MV Location: Bldg. TURB Floor El.

Room, Area 22AFWP 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 (i.e., is the item one YO N22 of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YC2 NEI UE- N/AZ

3. Is the anchorage free of corrosion that is more than mild sutface YE Nn UE1 N/Ag oxidation?

4, Is the anchorage free of visible cracks in the concrete near the anchors? YEI NE UI-E N/AN

5. Is the anchorage configuration consistent with plant documentation? YEt NE1 UE NWAS (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 Y1t NM UE]

potentially adverse seismic conditions? IEnter the equipment clas& name from Appendix B: Classes of Equipment.

4-0 RETR NORAT~ WIETHHO11lD EpRem PibB3ETC BisOLO3euRB Sheet 2 of 4 Status: YZ NOJ UFI Seismic Walkdown Checklist (SWC) Equipment ID No. MVQ32384 Equip. Class1 (8) Motor-Operatedand S&olenoid-OceratedValves Equipment Description 21 MD AFW PMP DISCH TO 22 SG MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y21 NEI U- N/A[-

The cantileveredconduit routedabove is not deemed a seismic hazard because it will not hit the valve.

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UDI N/A 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/A[D

10. Based on the above seismic interaction evaluations, is equipment free YO NEIUD of potentially adverse seismic interaction effects?

Other Adverse Conditions 11, Have you looked for and found no other seismic conditions that could YO NO U0 adversely affect the safety functions of the equipment? Cromments (Additional pages may be added as necessary) The conduit rod stirrupbelow the valve is missing one bolt. This is not a seismic issue for the valve, but requires evaluation. CAP 1356520 has been initiated to evaluate this observation. In addition, WR 84626 was initiatedto address this observation. Evaluated by: Waiter I Diorcievic i i i

i- =

Date: KvlP Krien.qe Date:

                                         //,                   I

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE

Sheet 1 of 3 Status: YN NO U[-i Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32389 - Equip. Class, (08) Motor-Ogeratedand Solenoid-OperatedValves Equipment Description 24 FCU CLG WTR INLT ISOL MV Location: Bldg. AUX Floor El.

Room, Area NORTH WEST 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 us'ed 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-NO of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YEJ NEI UI N/AN

3. Is the anchorage free of corrosion that is more than mild surface Y[-il NEI U[EI N/AZ oxidation?

4, Is the anchorage free of visible cracks in the concrete near the anchors? YEI NOI UFJ N/AZ

5. Is the anchorage configuration consistent with plant documentation? YEI~ NDl UF1 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 YN NEI Uf potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

PROPRIETTARY INFORMATION WITrhTOLD FROrM PUr'rIC DISCLO-ETSURE Sheet 2 of 3 Status: YO NO u[] Seismic Walkdown Checklist (SWC) Equipment ID No. MV-32389 Equip. Class, (08) Motor-Operatedand Solenoid-Operated Valves Equipment Description 24 FCU CLG WTR INLT ISOL MV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y12 NEI UE3 N/AEI

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, Y0 Nil U[1 N/AE3 and masonry block walls not likely to collapse onto tie equipment?

The "S"hooks for the fluorescent lighting fixtures are closed, and do not pose a concern. The containment purge line is well supported and is not a seismic concern.

9. Do attached lines have adequate flexibility to avoid damage? Y[Z NEI UEJ N/A[l

10. Based on the above seismic interaction evaluations, is equipment free YIN NEI UEI of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NEl UEl adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: D atc:

                                                                                           /0 - Z'2 -Za " 2-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report 1 IKl(1 1AIITI.rUUnI r% CED'R/I ID31 I0t I*10t-I fnOl IDr The remaining pages are withheld from public disclosure.

I- P lPAPREERTAR !NFE)RMA~TTI1 - WfTH~ttf)T~ FcR(5 PUtTPT.e flT.TCYtS' Sheet 1 of 8 Status: YN NF-- U-] Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 211 Equip. Class' (14) DistributionPanels Equipment Description INSTRUMENT BUS II PANEL (WHI) 211 Location: Bldg. TURB Floor El. ý 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 YN ND of the 50% of SWEL items requiring such verification)?

2. Is the anchorage firce of bent, broken, missing or loose hardware? YN NEI UD N/A-The SWEs could not verify the size of the anchors. It is only possible to see them partially.However, all of the 4 anchors are present.

3. Is the anchorage free of corrosion that is more than mild surface YM NEI UI N/AD oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YN NDI UD N/AD The SWEs could not detect cracks in the concrete because the wall is covered with a fire protection coating.

5. is the anchorage configuration consistent with plant documentation? YN 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.)

The SQUG SEWs were referencedfor the anchorverification.

6. Based on the above anchorage evaluations, is the anchorage free of YE NEI UD potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

      +ý+f-" +ý+f- -P                   + L-.4#4    W    + WtW+++t"-H+-1
                                                    ..............        +-+,&Mtvt VA

0 . .. . . . . . - . .. 1. - - ".

Sheet 2 of 8 Status: YE NEI U-- Seismic Wal kdown Checklist (SWC) Equipment MDNo. PNL 211 Equip. Class' (14) DistributionPanels Equipment Description INSTRUMENT BUS I/ PANEL (WHO 211 Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YM NEI UO N/AO

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO 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? YED NO UO N/A' Panel211 and all conduits connecting to it are ridgid. There is no seismic concern.

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 N-- U[I adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) The SWEs inspected the internals of the panel and found no missing or loose hardware. It has 2 screws. Evaluated by: Dileep Chrelonalle Cr-v - t>,,-t A Date: ý o - 2 &- I '_ Bruce rv~ z~ Bruce Low

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM"" PUB*LIC DISCLOSURE The remaining pages are withheld from public disclosure.

WITHHOLD FROM PUBLIC DISCLOsSURE Sheet ' of 8 status-, YO No (JE Seismic Walkdown Checklist (SWC) Equip*ent ID No. NL 22 . Equip. Class' (14)Dlstrbutlon Pa*gis Equipment Desotiption DC DISTRI .UTiON PANEL 22 Location,, Bldg. TURO, FloortV.ý Room, Area 2?BATT Manufaaturer, Model, Eto. (optional but recomneonded) Inatru*tilons for Completing Chleldlst This ocecklist may be used to document the rcsults of the Selfeio Walkdown of an item of equipmunt on the SWVL. The space below cmih of the following questions may be used to renoord the results of Judgments and findings. Additional space is provided at the cnd of this ohiecklist for documenng btler comments, AUCDOX4110 1, Is the anchorage oonfiguration verification required (i.e., is the Item one YO NN of the 50% of SWEL items requiring such verification)?

2. Is the anchorage fA=e of bent, bro1ken, missing or loose hardwat? YO IS] LTD N/A12

3. Is the anchorage fR'ee of corrosion that is wore (ban mild surface YO NO UFI N(AQ oxidation?

4. Is the anchorage free of visible cracksl inthe concrete near the anchors? Y'Y NEI V1E NIAC]

5. Is the anchorage configuration ounsistent with plant documcntation? YO)NOl UOC VN/

(Note; This question only applies if the Item is one of the 50% for whioh an anohorage configuration verifioation is required,) .1 6, Based on the above anchorage evaluations, is the anchorege free of Y3NEI TIC potentially adverse seismic Conditions? The A-46 SEWs declaredthis panel as an outlir and requireda groutpad so that the baits would not be subject to-bending> The recommended resolution does nof appearto have been performsd, Site enginearinghas reviewed this observation andoonuluded there Is no seismic concern. Please referto the table contained In Appendix F for the dispsition of this observation

  *Entar the equipment class kame r'ern Appendix B: Classts of Equipiment.

Sheet 2 of 8 Status, YOj NO Ufl Seism t Walkdown Check{ist (SWC) Equipment ID No. PML 22 RJquip-. Class' #14)Distrlbgtfin Panels Equipment Description DC DISTRIBUTION PANEL 2g Inteructlo Efeu 7, Arc soft targets free from impact by nearby equipment or structures? Y-l NOi U[I N/AO The counterweijhtof the dloor pulley system may .strl e panel PNM 22. CAP 1352343 has been Intiateidto evaluate this observation. WR 83645 and 83646 have also been Initatedto address this observation. S. Are overhead equipinent, distribution systems, oeiling tiles and lighting, YO NEI T0 X/Aa and masonry block walls not likely to collapse onto the equipment? Blck wall #7 Is safety related.

9. Do attached lines have adequate flexibility to avoid darnage? YN NEI TIC N/ACI

10. Based on the above seismio interaction evaluations, is equipment free YN NU UF ofpotentially adverse seismic interaction effecta?

The rope with a larch at the end I[ not a credible hazard. Othe Adver*se Couditlona

11. Have you looked for and foutnd no other seismic conditions that could YN NCI U'l adversely affeat the safety functions of the equipment?

SWEs opened all of the doors and found nothing anomalous. Commentm cAdditionil poses nay Wadded be as necessary) Evaluated by: ofafrl nfLaz Date; --- "i'-OA Deni mtr

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHLD FrOM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

      -PROPRIETARY            TNFOR,-TION              WITiiiiOLD FROM EbLIC DISCLOSURE Sheet i of 12 Status: YZ NEI UF-Seismic Walkdown Checklist (SWC)

Equipment ID No. PNL 234 Equip. Class' (14) Distribution Panels Equipment Description AC DISTRIBUTION PANEL 234 Location: Bldg. AUX Floor El. ý Room, Area NORTH WEST 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 NEI U-1 N/AD:

3. Is the anchorage free of corrosion that is more than mild surface YN NEI UD-N/AD-1 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NDI UD- N/AD

5. Is the anchorage configuration consistent with plant documentation? YZ 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.)

Referenced drawing XH-529-3 for anchorage verification.

6. Based on the above anchorage evaluations, is the anchorage free of YZ NEI UEJ potentially adverse seismic conditions?

IEnter the equipment class name from Appendix B: Classes of Equipment.

FRE)FR3EETARY ]ENFeRMATIEeN WiTIIIIOLD PROPI EARYINIORIIATTON FRQI.1 iPUB~ie BIEJOLSURH Sheet 2 of 12 Status: YZ N[-- U[ Seismic Walkdown Checklist (SWC) Equipment MDNo. PNL 234 Equip. Class' (14) DistributionPanels Equipment Description AC DISTRIBUTION PANEL 234 Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NEI UrZ N/A[-

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO N-I U[:1 N/AlZ and masonry block walls not likely to collapse onto the equipment?

Both of the "S" hooks for the light fixture in front of panel 234 are open. The light fixture will not impact the panel as it is 4' away from the panel. 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 address these observations.

9. Do attached lines have adequate flexibility to avoid damage? YN NE UF- N/Ar-

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 Nn U' adversely affect the safety functions of the equipment?

Internal components were inspected and no loose or missing mounting hardware was found. Comments .(Additional pages may be added as necessary) Evaluated by: Bruce M. Lory Date: /,9 2-.9/-/2. Dileepo Cherlopalle C-- V.-~bý \t Date: to --- &-tI-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PRO)PRIETARY iNFOPJ.ATFIEN WEEI~HIGOL FROM. PUDLIC@ DIGG3SCLSE Sheet 1 of 6 Status: Y1 NF- Ui-Seismic Walkdown Checklist (SWC) Equipment DeNo. PNL 234/XFMR A Equip. Class' (04) Transformers Equipment Description PANEL 234 TRANSFORMER Location: Bldg. AUX Floor El. ý Room, Area NORTH WEST 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 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-1 N/AL]

3. Is the anchorage free of corrosion that is more than mild surface YO NEI Uil N/A[]

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YZ NE] Ul] N/AD

5. Is the anchorage configuration consistent with plant documentation? YE- NE] UI] 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 Y[ NEI UE]

potentially adverse seismic conditions? Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NEI UE- N/AD-Enter the equipment class name from Appendix B: Classes of Equipment.

                                                        * *mTTTT*

V1-~U~tLLL NFURK1U- P9P;1Ii' i11111ULI LK 'I UbbLIU - - - - lýUK Sheet 2 of 6 Status: YZ NEI U-Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 234/XFMR Equip. Class, (04) Transformers Equipment Description PANEL 234 TRANSFORMER

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YE NOl Ur] N/AL and masonry block walls not likely to collapse onto the equipment?

The "S hooks" at both ends of a light fixture near PNL-234/XFMR are open. If light fixture unhooks at both ends, its power cord will hold the fixture at one end, and the other end will swing down. Panel 234 and the transformersare not in zone of influences, so SWEsjudge light fixture falling is not an adverse seismic condition. 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.

9. Do attached lines have adequate flexibility to avoid damage? YN NE] U[] N/A-]

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 YZ NEI U[]

adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) Evaluated by: Bruce M. Lorv Date: i.--f -- '. Dfleep Cherlopalle r- k; ->i ýe Y-t %. 10- V1 - 11'-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PROPRiETrARY i"rNPO*riiT"rN WITHHOLD FROM PUBLIC DISCLOStfRE Sheet 1 of 11 Status: YN N[- UM-- Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 235/XFMR Equip. Class' (04) Transformers Equipment Description PANEL 235 TRANSFORMER Location: Bldg. AUX Floor El. ý Room, Area NORTH WEST 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 fiee of bent, broken, missing or loose hardware? YO NI] U-1 N/A'-

3. Is the anchorage free of corrosion that is more than mild surface YO NEI U-1 N/AEl oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YO NDI UD1 N/AD1

5. Is the anchorage configuration consistent with plant documentation? YDI NEI UD 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 YN NEI UE-potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

eiRsmiRWldwARYCheckRMAT (SWN WEEIIIIELD F-ReM PUDLICe DISCLO3SURE Sheet 2 of 11 Status: YN N[- U-] Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 235/XFMR Equip. Class' (04) Transformers Equipment Description PANEL 235 TRANSFORMER Interaction Effects

7. Are soft targets fi'ee friom impact by nearby equipment or structures? YlM NEI UI1 N/AFI

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?

9. Do attached lines have adequate flexibility to avoid damage? YE NEI U-' N/AE"

10. Based on the above seismic interaction evaluations, is equipment free YE 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 YN NE] UE-I adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce Lory Date: -O

                                                                                              "*-1*Z-DileeD Cherovalle        C--V- ; I-eeP V,,                                  10-"" ?                                                                     1

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETARY IUFORMATION -W1T-HHEIELB FR8M ?b -C- DIOCLZU)SRH Sheet 1 of 5 Status: YOJ NF- U[] Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 261 Equip. Class' (14) DistributionPanels Equipment Description DC DISTRIBUTION PANEL 261 Location:. Bldg. AUX Floor El. ý Room, Area NORTH WEST 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? YZ NDl UE- N/AD1 The upper left 3/8" diametershell expansion anchorhas sheared off.

Plant engineeringinvestigated this observation and determined that the fourth bolt is visible behind the spring-loadednut holding the panel enclosure to the Unistrut. Panel261 therefore has four mounting bolts connecting it to the concrete wall, and no concern is present. CAP 1352221 was initiatedto document this observation. WR 83615 was also initiatedto perform any field work requiredby CAP 1352221.

3. Is the anchorage free of corrosion that is more than mild surface YM NEI UD1 N/AD oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YED NEI U0 N/AD

5. Is the anchorage configuration consistent with plant documentation? YED NEI U[-] N/A[D]

(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 to verify anchorage. The anchorageconsists of four 3/8" diametershell expansion anchors. See question 2. 1 Enter the equipment class name from Appendix B: Classes of Equipment.

       .- PRO)PRIETARY  "'NF"'RmTIGN                WIThhImOLD    FROM PU.BI=C- DISCLOSL*E              I 1

Sheet 2 of 5 Status: YZ NF UF-Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 261 Equip. Class' (14) DistributionPanels Equipment Description DC DISTRIBUTION PANEL 261

6. Based on the above anchorage evaluations, is the anchorage free of YZ NEIUD-potentially adverse seismic conditions?

Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y9 ND: U- N/AD

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YED NEI UL- N/AD]

and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? Y23 ND UD N/ADI A combination of rigid and flexible conduits are connected to the panel.

There are no seismic concerns.

10. Based on the above seismic interaction evaluations, is equipment free YZ ND UD]

of potentially adverse seismic interaction effects? Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could Y[ ND1 UD adversely affect the safety functions of the equipment?

The internalsof the panel were inspected and the SWEs did not find any loose or missing component mounting hardware. Comments (Additional pages may be added as necessary) The internal cabinet has been inspected and was found to have no loose or missing hardware.

Sheet 3 of 5 Status: YZ NEI U0-Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 261 Equip. Class' (14) DistributionPanels Equipment Description DC DISTRIBUTION PANEL 261 Evaluated by: Dileep Cherlopalle c.,,.-,. Date: 10 - ?-9 Bruce Lorv .y... , , 2 /

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS I -A1IT-HHO'l FROM

                          -D  PUIBI IC DISCLOSUR The remaining pages are withheld from public disclosure.

       "ORI"TTrAY            TINrTT*I' T              WITHHOLD-  T FROT     PUBLICT DITCLOTRE Sheet 1 of 7 Status: YN NEI uFi Seismic Walkdown Checklist (SWC)

Equipment ID No. PNL 262 Equip. Class' (14) DistributionPanels Equipment Description DC DISTRIBUTION PANEL 262 Location: Bldg. AUX Floor El. ý Room, Area NORTH WEST 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)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YNI NDI UD1 N/AD1

3. Is the anchorage free of corrosion that is more than mild surface YO NE ULi N/AD1 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YN NDI UD1 N/AD

5. Is the anchorage configuration consistent with plant documentation? YN NDI UD1 N/AD1 (Note: This question only applies if the item is one of the 50% for which an anchorage configuration verification is required.)

The SQUG SEWs were referencedfor anchorage verification. Only three out of four of the anchors were visible. The 4th anchoris blocked from view by an angle iron.

6. Based on the above anchorage evaluations, is the anchorage free of Y10 NEI U--

potentially adverse seismic conditions? IEnter the equipment class name from Appendix B: Classes of Equipment.

PROSPeisIc E TARY n I OChe-liT ION WITHHEOLD PROM PBELIC DIGCLOZGSUE Sheet 2 of 7 Status: Y] NEI UI-- Seismic Walkdown Checklist (SWC) Equipment ID No. PNL 262 Equip. Class, (14) DistributionPanels Equipment Description DC DISTRIBUTION PANEL 262 Interaction Effects

7. Are soft targets free friom impact by nearby equipment or structures? YN NEI UI] N/AL]

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YE NEI UL] N/AZ and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YER NEI UE1 N/AZI The conduits connected to PNL 262 are rigid.

10. Based on the above seismic interaction evaluations, is equipment free YI NEI UE3 of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YN NEI Ur-adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) The internals of the panel were inspected. There is no loose or missing hardware. Evaluated by: Dileep Cherlonalle c- .- t'1 _,=. Date: 16 - Z?,-) - 1 03 Bruce Lory VýVý "-

                                                         -'Oev
                                                                                            /0-Z'2-/2
                                                                                            /0,.._

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE

PROPRIETARY INFOR..ATION wIETi.iiiLD3B O*M-RPUBL.I.e. BIs.L,- RE* Sheet 1 of 5 Status: Y] NDl U[] Seismic Walkdown Checklist (SWC) Equipment ID No. RS-21-11 Equip. Class' (07) Fluid-OperatedValves Equipment Description 21 SG MS HDR RELIEF Location: Bldg. AUX Floor El. ý Room, Area SOUTH WEST 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 NO of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YO NEI UI- N/AZ

3. Is the anchorage free of corrosion that is more than mild surface YOI NR UW- N/AO oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YI- NO UW- N/AO

5. Is the anchorage configuration consistent with plant documentation? YEI NEI UW1 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 UW]

potentially adverse seismic conditions? IEnter the equipment class name from Appendix B: Classes of Equipment.

Sheet 2 of 5 Status: YV NEI ULI Seismic Walkdown Checklist (SWC) Equipment ID No. RS-21-11 Equip. Class' (07) Fluid-OperatedValves Equipment Description 21 SG MS HDR RELIEF Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? Y0I NI U0I N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI U[W N/AZ-and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? YS NEI Ur- N/AZ

10. Based on the above seismic interaction evaluations, is equipment free Y[D NEI U--

of potentially adverse seismic interaction effects? Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YED NEI UW-adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce Lorv Date: II- 14-/.. Dileeo Cherlooalle Vi t5 C-v. Date: N%-9 Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PZpniBTE.A. E INFOeRmfTION WITHHOLD FROM PUBLIC DISCLOSURE Sheet 1 of 2 Status: YM N[-E U[-- Seismic Walkdown Checklist (SWC) Equipment ID No. SV-33777 Equip. Class' (8) Motor-Operatedand Solenoid-OperatedValves Equipment Description 22 DD CLWP DSL JCKT CLR OUTL SV Location: Bldg. SSCN Floor El. ý Room, Area 22 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 Y[- NO of the 50% of SWEL items requiring such verification)?

2. Is the anchorage free of bent, broken, missing or loose hardware? YO NO UL- N/AD

3. Is the anchorage free of corrosion that is more than mild surface YO NDI U-1 N/AD1 oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YD-NDI UD1 N/AO

5. Is the anchorage configuration consistent with plant documentation? YD-NDI UD 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 NEI UD-potentially adverse seismic conditions?

' Enter the equipment class name from Appendix B: Classes of Equipment.

PROPIETRY WITHHOLD IlPOr.~TIONPROM PUBLIC SLOUR Sheet 2 of 2 Status: Y[ NR UEI-Seismic Walkdown Checklist (SWC) Equipment ID No. SV-33777 Equip. Class1 (8) Motor-Operatedand Solenoid-OperatedValves Equipment Description 22 DD CLWP DSL JCKT CLR OUTL SV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YED NErI U] N/AZ

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YO NEI UZ N/AZ and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? Y[D NEI UM- N/AE-

10. Based on the above seismic interaction evaluations, is equipment free YN N[-] U[-]

of potentially adverse seismic interaction effects? Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YO NEI UE1 adversely affect the safety functions of the equipment?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce Lory Date: I0-21-1"_ Dileep Charopalle c-u "Ito t, *-,-' , Date: kO --C - p

PRGPR!BT-AR* !NFeRMAT-19N PRPRETRYINOPTIN wgIT-iiiOLD F-ROm PuDLiCi D~iseCLDuRE Sheet i of 5 Status: YZ NEI UE-Seismic Walkdown Checklist (SWC) Equipment ID No. SV-37904 Equip. Classi (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description D5 ENG 1 AUX DESK 10 START AIR SV Location: Bldg. D5/D6 Floor El, ý Room, Area D5 ENGINE 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 NEI UE N/AZ

3. Is the anchorage free of corrosion that is more than mild surface YE NO UE N/A[

oxidation?

4. Is the anchorage free of visible cracks in the concrete near the anchors? YE NEI UFJ N/AZ

5. Is the anchorage configuration consistent with plant documentation? YE NE UE N/A[

(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 UO potentially adverse seismic conditions?

IEnter the equipment class name friom Appendix B: Classes of Equipment.

tNt't:IftfttYt'ttjN rM:)M ronli-Tt:1-Sheet 2 of 5 Status: YM NOI- U7-Seismic Walkdown Checklist (SWC) Equipment ID No. SV-37904 Equip. Class' (08) Motor-Operatedand Solenoid-OperatedValves Equipment Description D5 ENG 1 AUX DESK IB START AIR SV Interaction Effects

7. Are soft targets free from impact by nearby equipment or structures? YO NEI Ur] N/AL]

8. Are overhead equipment, distribution systems, ceiling tiles and lighting, YZ NEI UDI N/AF-and masonry block walls not likely to collapse onto the equipment?

9. Do attached lines have adequate flexibility to avoid damage? Y9 NEI UE- N/AL]

10. Based on the above seismic interaction evaluations, is equipment free YN NEJ UD of potentially adverse seismic interaction effects?

Other Adverse Conditions

11. Have you looked for and found no other seismic conditions that could YZ NEI UL]

adversely affect the safety functions of the equipment? Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievic 6~4'V~ Date: f i t.,, Kyle Kriesel Alle

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNISI -WI1THHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS'. WIT-0 OLD FROM PUBI. Dise..suRr. 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 2 Completed AWCs Area Walk- Checklist By Description Equipment Tag(s) Status Designation (Y/N) 1 AUX 11/21 CC PUMP MV-32160 N 2 AUX 12/22 CC PUMPS 245-122 N 3 AUX 21/22 CNTM SPRY MV-32180 N 245-071 4 AUX 21/22 SI PUMP 2LT-920 N 2LT-921 245-042 5 AUX 22 CHRG PUMP Y 2VC-28-2 C-1

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report

           *R miriAm limmim mmmAre

mmAm S~UNS' WIT11 1iiILB F RI PUBLIu B'UI--FdbUH1U Table C-1: Prairie Island Unit 2 Completed AWCs Area Walk- Checklist By Description Equipment Tag(s) Status Designation (Y/N)

CV-39413 N PNL 234 6 AUX NW PNL 234/XFMR PNL 235/XFMR 2PT-479 MV-32148 7 AUX NW N PNL 261 PNL 262 8 AUX B E-MON EM-B2 N 2LT-762 2LT-763 9 AUX NW N MV-32020 MV-32389 2PT-469 10 AUX SW MV-32248 Y RS-21-11 11 D5/D6 D5 CNTRL 50200 N 12 D5/D6 D5 ENGN 55320 Y 234-031 C-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report TabJlv*,l -i Viri IrIe.. Ia ,UIV It Com leted AW Table C-1: Prairie Island Unit 2 Completed AWCs Area Walk- Checklist By Description Equipment Tag(s) Status Designation (Y/N) 246-031 2EG-1 5-2 SV-37904 13 D5/D6 D6 ENGN 234-032 Y 14 D5/D6 26 BUS BUS 26 N 15 D5/D6 D5 FO 253-361 Y 211 M/XFMR 16 D5/D6 211/212 BUS Y 212M/XFMR 17 D5/D6 221/222 BUS 221 M/XFMR Y MTR 211 K-12 18 D5/D6 D5 MECH Y MTR 211K-13 19 D5/D6 D5 RADIATOR 253-401 Y 70350 053-322 235-081 20 SSCN 22 DD CLWP N 245-392 CV-31457 SV-33777 21 SSCN SOUTH 232-281 Y 22 TURB B E-MON 274-162 Y C-3

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS' - WIT 1 ILD fflemPUB l pI3ClO=S9UFnE Table C-1: Prairie Island Unit 2 Completed AWCs Area Walk- Checklist By Description Equipment Tag(s) Status Designation (Y/N) 23 TURB21 AFWP 217-111 N 24 TURB 21 BATT 21 BATT N 245-201 CV-31060 CV-31419 25 TURB 22 AFWP MV-32030 N MV-32246 MV-32383 MV-32384 22 BATT 26 TURB 22 BATT 22 BATT CHG N PNL 22 27 TURB BUS 121 274-031 Y 2ASG1 28 TURB RELAY Y PNL 211 2NR3 B-2 29 AUX CNTRL RM N D-2 E-2 C-4

    -     D~~nTE~TT~V             TTJ~5.~T.A~        T~T  - t.7T7tW.~.7~.     ,,.,,       -

A\..e1:a 1. Xh1"els (IAN 1: s..IXI C .. Sheet 1 of 15 Status: YE] NM U-] Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area' 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 YO NDI UD- N/AD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

It appears that CS-19543 is not anchoredto the wall. There are four externalholes in the bracket for fasteners but no fasteners are present. Site engineeringhas reviewed this observationand concluded there is no seismic concern. Please refer to the table containedin Appendix F for the dispositionof this observation.

2. Does anchorage of equipment in the area appear to be free of significant YZ NDI U-- N/AD degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YZ NDI U-1 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 YO NDI UD1 N/ADl 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 -IiHPER1.TIGN WIT!11OLD FROM Fb~ilIC DISCLOSeURES Sheet 2 of 15 Status: Y-I NO u-- Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El. ý Room, Area1 11/21 CC PUMP

5. Does it appear that the area is free of potentially adverse seismic Y[ NI] U[I N/A-]

interactions that could cause flooding or spray in the area?

6. Does it appear that the area is free of potentially adverse seismic YEI NI] UI] N/AI]

interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic 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 initiated to evaluate this observation. In addition to writing the action request, WR 83853 has been initiated to address the observation.

8. Have you looked for and found no other seismic conditions that could YI] NO U((]

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 appearsto be bent and the anchoris loose. There is a tygon tube wedged under the corner. CAP 1353327 has been initiated to evaluate this observation. In addition to writing the action request, WR 83865 has been initiatedto addressthe observation. Comments (Additional pages may be added as necessary)

PRO;PRIET-ARY, !NFeRMATFIN wiTiiiiehB FRO)M Pb'BnIO Bi3LseieuE Sheet 3 of 15 Status: Y[-] NZ UI-Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area 1 11/21 CC PUMP Evaluated by: Bruce Lorv s-ý ; *t, Date: / - po 2lI Dileep Cherlopalle c.v.r. A--, \0 9*\2-.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PROPRImETA )" INFI7QIW(AWC) TIAIN WIT1'IIIULDJi1U~ ............... "............. J Checklist Sheet 1 of 6 Area Walk-By Status: Y[] NZ UE] Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area1 12122 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/AO 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 NO U-] N/AL]

degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YO NEI UF'L 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 Y[] NO U-] N/AL 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 near the 22 component cooling pump, six feet above the 695' floor. This unit cooler is 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 unit cooler may break as well. Site engineering has reviewed this observationand 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 NE] U-1 N/AL]

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.

_R-pRiETARYINp-. .MATie-. wIT-'..'hHLD PeL"i

                                                                          .Om        BiJ**i**     bRE Sheet 2 of 6 Status: Y--   NZ UL--

Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area' 12/22 CC PUMP

6. Does it appear that the area is free of potentially adverse seismic YO NEI UE- N/AE]

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/AE]

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 exchangerin an unapprovedstorage location. It is not a seismic interactionissue, but may be a housekeeping concern. The ladder has 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 YED NE] UE]

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 coolingpump and the stairsto the upper level. Site engineeringevaluated this observation and concluded that the radiation monitoris not safety related. WR 83571 was initiatedto replace the wingnut and tighten the loose screw. CAP 01352076 was initiated to document the observation. Evaluated by: Bruce M. Lorv , 2, - Date: II-Of-(1-- Dileep Cherlopalle ,- . Date: I- - t"2..

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI - WITHHOLD FROM PUBLIC DISCLOSURE

PROPRIETARY IENFORMATION VWiTnrULJLJ rýiumk1 rUIJ.- +/-UuLk.+/-.TJhU.*. Sheet 1 of 8 Status: YD] NM Ul-- Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area, 21/22 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 YEI NEI UE[ 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 Y[ NEI UE1 N/AE-degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YED NE: 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)?

4. Does it appear that the area is free of potentially adverse seismic spatial YEI NEI U[] N/AE interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

1. See comment in the MV-32180 seismic walkdown checklist regardingthe light fixture seismic interactionover MV-32180.

2. Next to the pressure gauge PI-18249, there is a portable cord reel supportedon the wall by a pin. Since the cord is free to rotate, the reel could swing in a seismic event and potentially impact the valve and tubing of the pressuregauge.

CAP 1352923 has been initiated to document the observation, and WR 83779 has been initiatedto eithersecure the portable cord reel from movement or re-locate the portable cord reel to a more suitable location. 1 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.

 /    PROPRI     ETARY ....... R..TTOU          .WI.....eED FGOM PULIC D--SG-GS.UR=E                  '

Sheet 2 of 8 Status: YE] NM Ur-- Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area' 21/22 CNTM SPRAY

5. Does it appear that the area is free of potentially adverse seismic YE 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 ND] 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 Y[] NE U-- N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

1. Radiation monitor DRM-2 is attachedmagnetically to electricalpanel 2RIA54. The magnetic base may not be strong enough to prevent the monitor from falling and impacting the pressuregauge PI-18249 or associatedtubing.

CAP 1352796 has been initiatedto evaluate long term out of service time for the radiationmonitor. CAP 1352792 has also been initiatedto evaluate any potentialprocedure deficiencies in the installationof portable radiationmonitors.

8. Have you looked for and found no other seismic conditions that could Y[ NDI UD-'

adversely affect the safety functions of the equipment in the area? Comments (Additional pages may be added as necessary) Foreignmaterial,such as a pen and tie wraps, was identified. Plantpersonnelremoved this material. Evaluated by: Dileep Cherlopalle c:.'. t. -AO Date: \ - Oj - \ 2-" Bruce M. Lorv Z

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PRORIEARYTNPR~TON WITHHOLD9 PROM PTSBE3C DISCLOjSURB Sheet I of 13 Status: YO NZ UD_] Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area, 21/22 SI 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 Ur- N/A((

potentially adverse seismic conditions (if visible without necessarily opening cabinets)? The guardcover on 22 safety injection (SI) pump coupling has two loose nuts for the bracket attachedto the foundation of the SI pump. The bolts are effective to withstand seismic loads. The coupling guard will remain in place during a seismic event. It is seismically acceptable, but the loose bolts should be tightened. CAP 1352699 had been initiated to evaluate this observation. In addition to writing this action request, WR 83742 has been initiated to re-tighten the bolts.

2. Does anchorage of equipment in the area appear to be free of significant YN NEI U-1 N/AEl degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YN NEI ULI N/AU 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 cable trays are lightly loaded and the rigid conduit is all suspended using a double unistrut frame overhead. It is an acceptable design for seismic loads.

4. Does it appear that the area is free of potentially adverse seismic spatial YE NE UI- N/AU interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

An ultrasonic flow meter is chained to a pipe near 2SI-20-68. The pipe may not be capable of supporting this seismic load. 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. '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.

PRO.PRIETARY

      --.     .INFRMAT                    ION       WITHHOLD FROM FBhLIC DISCLO3SRE Sheet 2 of 13 Status: YD- NZ        ULI Area Walk-By Checklist (AWC)

Location: Bldg. AUX Floor El.

Room, Area1 21/22 SI PUMP

5. Does it appear that the area is free of potentially adverse seismic Y0] NEI U-- 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 Y23 NEI UEI N/AE interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic Y-- NZ U0 N/AE interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

An oil can was stored on the pipe support for MV-32185. There was no holder found for storing the can, which is againstthe site's seismic housekeeping procedure. CAP 1352727 has been initiatedto evaluate this observation. Off of this action request, WR 83746 was initiated to address the condition.

8. Have you looked for and found no other seismic conditions that could YEI NO UEr adversely affect the safety functions of the equipment in the area?

A steam heating line was found tie wrapped to the line that includes the 2-RCCH-538 support. The tie wrap is a poor housekeepingpractice, and should be removed. CAP 1352959 has been initiated to evaluate this observation. In addition, WR 83786 has been initiatedto address the condition. Comments (Additional pages may be added as necessary) A large wrench and an oil can were found underneath the electric panel 2541 wall bracket in the SI pump room. These items were removed by plant personnel. Evaluated by: Dileep Cherlopalle -'v-,;\og a y,, Date: ko0 ( -V).-- Bruce Loni/ry'

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SU1-INSI - ITHHOLD F ROQM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

21ZXti1AK L'titftft't1 iAJN Wt411IUULLf: Vtqtt:M VbULt LItJ LLLLA.2LUtJtf Sheet 1 of 4 Status: YZ NFJ U['- Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor EI. ý Room, Area, 22 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 YM NDI UD 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 YZ NDI U[I N/AD-degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YN NDI 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 UD1 N/AD1 interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

The light fixture to the side of the 22 chargingpump has an open "S" hook. The light fixture will not fall in a seismic event, and will not impact any equipment even if it did fall. The 22 charging pump is not in the zone of influence of the light fixture. CAP 1352001 has been initiatedto evaluate the open "S"hooks identified during these walkdowns. In addition to writing this action request, WR 83556 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.

WITIIIOLD3 FROM Pb - e D)ISCLOZ9UE Sheet 2 of 4 Status: YO NEI U-Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area' 22 CHRG PUMP

5. Does it appear that the area is free of potentially adverse seismic YNj NEI UE1 N/AZ interactions that could cause flooding or spray in the area?

6. Does it appear that the area is free of potentially adverse seismic YED NI] U[I N/AZI interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YE NEI U-1 N/AZI 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 NEI UEI 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 in the 22 chargingpump room:

1. There is a tubing connectorunder panel 70820 on the wall bracket.

2. There is foreign materialon a pipe near the fan coil unit.

3. There is a metal wire on a pipe on the ceiling bracket next to the chargingpump.

The foreign materialwas removed by plant personnel. Evaluated by: Dileep Cherlopalle C_,V 45 ýe .. Date: 't -* Bruce Lory gg... . t-(f ý"2 -"

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSUR The remaining pages are withheld from public disclosure.

PRORITAR IFORATON WIThhOLDE3E FROM PUBLICe DICCLODEURE Sheet 1 of 21 Status: YEiJ NZ UD-1 Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area1 NORTH WEST 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 YZJ NO UE 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 YZ NE] UE N/A[]

degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YZ NE UEr 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)? All cable trays, fire protectionpiping and HVAC are well supported.

4. Does it appear that the area is free of potentially adverse seismic spatial YEf NZ UE3 N/A' interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

There are open "S"hooks for lighting fixtures throughoutthe area. Light fixture nearcharging pump 71117 and 71119 is an interactionhazardif cabinet contains sensitive devices. Another open "S"hook on light fixture is above MCC 2K Bus 1 and above Miscellaneous Systems 21 Relay Rack. 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. 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.

T4T-CP==AT-4A ;04D-AM ;Rf-ý;F-FO=

      .rI\~J. £.+/--... £.L.i. rZ"'.t J.1 ..LJ
                                           .L*.K K./JXI\'Ig' .L +/-. S. JL' Sheet 2 of 21 Status: YE] N[Z UL-Area Walk-By Checklist (AWC)

Location: Bldg. AUX Floor El. ý Room, Area, NORTH WEST

5. Does it appear that the area is free of potentially adverse seismic YZ NE] UL- N/AEl interactions that could cause flooding or spray in the area?

Fire protection piping is seismicallyrestrainedand constructed of welded steel.

6. Does it appear that the area is free of potentially adverse seismic YO NEL U-] N/AL interactions that could cause a fire in the area?

Hydrogen piping above 121 Hot Machine Shop Exchange Fan is laterallysupported.Fluorescentlight fixture above hydrogen piping has open "S"hooks but does not pose a credible hazard to the welded steel piping. It is not an adverse seismic interaction that could cause a fire. See question 4 for disposition of open "S"hooks identified during these seismic walkdowns.

7. Does it appear that the area is free of potentially adverse seismic YN NEI U-] N/AL]

interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)? Temporary equipment meets housekeeping procedure.

8. Have you looked for and found no other seismic conditions that could YZ NEI UL" adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Wafter Dordfevic Date: (6 Z-* IL. Bruce M. Lorv ,t, fez

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

WI1TiHEhBL FR8M FUDLie DI SOLOSUdRH Sheet 1 of 15 Status: Y[] No U[D Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El. m Room, Area 1 NORTH WEST 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 ULI N/AE]

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 NEI U-IZ N/AD degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YE] NZ U[-] N/AE]

raceways and HVAC ducting appear to be firee of potentially adverse seismic conditions (e.g., condition of supports is adequate and fill conditions of cable trays appear to be inside acceptable limits)? There are open "S"hooks at both ends at the top of the light fixture above MCC 2L BUS 1. CAP 1352001 has been initiatedto evaluate the open "S" hooks identified during these walkdowns. WR 83556 has also been initiated to address this observation.

4. Does it appear that the area is firee of potentially adverse seismic spatial YO NEI UE1 N/AF]

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.

wiTTiTiiiLD FROm Pbcaie BiiseEOsuRH Sheet 2 of 15 Status: YE] NM UI-- Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area' NORTH WEST

5. Does it appear that the area is free of potentially adverse seismic YN NEI Ur- N/AF-interactions that could cause flooding or spray in the area?

6. Does it appear that the area is firee of potentially adverse seismic YN NEI U-- N/ALI interactions that could cause a fire in the area?

7. Does it appear that the area is firee of potentially adverse seismic YEI NEI UI- N/ArI interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

There is a black barrelcollecting leak off from drain line 2ZX-1-19 located under the staircaseand next to MCC 2L BUS 1. The barrelis loosely tied off with rope to the unistrut supportingpanel 2R1A57. 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.

8. Have you looked for and found no other seismic conditions that could YN NEI UE-adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce M. Lory g, Date: /0 -__2 _2_ Dileep Charlopalle c.'.Dr* l,. '

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

    .o*f_ ....................
      ......                I....Y..............             ...I....L...R..        PUBL IC     DISCLOEURE Sheet I of 20 Status: Y[-] 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 YM NE 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 YN NEI UD1 N/AD degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YN ND UD-1 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 YE NEI UD- N/AD interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

The light fixture hanging from the ceiling is about3" to 6" from an electricalbox that is connected to panel 219. During a seismic event the fixture may hit the electricalbox. 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. 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.

wfITHHOL FROM PBLIC .i....s.. (AWC)~T~f Are WaRkByRIeTARis Sheet 2 of 20 Status: YE]l NZ U-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 Y-I NZ UE- N/AZl interactions that could cause flooding or spray in the area?

If the unit cooler supply and return lines break during a seismic event, it may result in flooding the room. There is no floor drain in the train B event monitoring room. Reference hangers2-RHRH-453, 2-RHRH-448, 2-RHRH-449, and 2-RHRH-454. 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.

6. Does it appear that the area is free of potentially adverse seismic YN NO ULI N/AZ 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/AZ 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 N[-] U--

adversely affect the safety functions of the equipment in the area? Comments (Additional pages may be added as necessary) Evaluated by: Dileep Cherlopalle c \ti- ipile Q--PX Date: /0-30-)2% Bruce M. Lory 4 s-, m_,,, Date:

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

     -PROPRiETARY             iNPORMATION?               wiETiffLD         iPROm PUBLICe            DIESeLO SURE Sheet 1 of 13 Status: Y[] NO UE" Area Walk-By Checklist (AWC)

Location: Bldg. 'AUX Floor El. ý Room, Area' NORTHQWEST 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-3 UD NIAD potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant YI N[D UED N/AE]

degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YO NDI UI 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 YO ND U-= N/AD-interactions with other equipment in the area (e.g., ceiling tiles and lighting)? There are open "S" hooks on the fluorescent lights In numerous locations. However, none of the fixtures are above safety related equipment. There is no seismic concern. CAP 1352001 has been initiated to evaluate the open "Sohooks identified during these walkdowns. In addition to writing this action request, WR 83556 has been initiatedto addressthis observation. 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.

    ........................                          WITHHOD FRO..          PUBLIC     IGCL     URE Sheet 2 of 13 Status: YEI NoJ Uf' Area Walk-By Checklist (AWC)

Location: Bldg. AUX Floor El.

Room, Area- NORTH WEST

5. Does it appear that the area is free of potentially adverse seismic YQ ND UD N/ACL interactions that could cause flooding or spray in the area?

The steam unit heateris suspended on 12' long rods which could break the steam line attachedto the heater. The equipment in the area is designed to be environmentally qualified for a steam line break, therefore there is no concern.

6. Does it appear that the area is free of potentially adverse seismic YO ND U[D N/AD]

interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YEI NZ Uci N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

1. The wrench hangingfrom 2MS-27-2 is a potentialhazardto SOV-33266 and SV-33264. The recommendation is to re-locate the wrench to a heightlower than the SOV elevation, so that it is no longera potentialhazard.

CAP 1352195 has been initiated to evaluate this observation. In addition to writing the actionrequest, WR 83607 has also been initiated to address this condition.

2. The chain fall locatednearLFT-495 should be restrainedso that it doesn'thave the potential to impact the transmitter.

CAP 1352586 has been initiated to evaluate this observation. WR 83723 has also been initiated to address this condition.

8. Have you looked for and found no other seismic conditions that could Y0 NDI UD-adversely affect the safety functions of the equipment in the area?

The tube lines nearLFT-495 couldpotentially impact the transmitter. It is recommended that these lines be restrained. Site engineering has reviewed this observation and concluded there is no seismic concern, because the transmitterand tube lines are non-safety related. Please refer to the table contained in Appendix F for the disposition of this observation.

                                                                                                           /J
     -   L1ai~L1A1        fiIt`Ui&AAIIUIýN       W LITIIIULLj) i'turi UL.L     DGInUUUU1E Sheet 3 of 13 Status: YO"N[            Ul[J Area Walk-By Checklist (AWC)

Location: Bldg. AUX Floor El. ý Room, Area' NORTH WEST Comments (Additional pages may be added as necessary) Evaluated by: Walter Dordievic Date: 1/ ,- I, - Dennis Zercher I _e_.. z__-_______

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCILOSUR The remaining pages are withheld from public disclosure.

i iP wi!FiiiOLDE F-Rem PuD~ie D~ISCLO9suRE

                    .(AWC)--

Chcls Area Walk-B Sheet 1 of 7 Status: Y[ NEI U-Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area' SOUTH WEST 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 NE U-- N/Al1 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 NO ULI N/AL degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YN NEI UE1 N/ALl 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 UL- N/ALE 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.

  - iReER5EET:ftRY iiiFeRm:hT5Eeii                 wITfifOLD PRORITAY  IFO~TON iPROm PUDLICf   BIseELOsuRE Sheet 2 of 7 Status: Y[     NEI- UP[

Area Walk-By Checklist (AWC) Location: Bldg. AUX Floor El.

Room, Area1 SOUTH WEST

5. Does it appear that the area is free of potentially adverse seismic Y[ NE UD- N/AZ interactions that could cause flooding or spray in the area?

6. Does it appear that the area is free of potentially adverse seismic YZ NE U[" N/AE" interactions that could cause a fire in the area?

7. Does it appear that the area is fi'ee of potentially adverse seismic YN N[l U-- N/A[-

interactions associated with housekeeping practices, storage of portable equipment, and temporaiy installations (e.g., scaffolding, lead shielding)?

8. Have you looked for and found no other seismic conditions that could YOI N[i] Uil 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: L-- .3 -- Dileep Cherlopalle C_ V-\ -I-.. \, -. * ,., I\ -

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

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                                                                                                                        . J 0,j I Uj.'r, Sheet 1 of 7 Status: YE[-     NOj UO]

Area Walk-By Checklist (AWC) Location: Bldg. 05106 Floor El. ý Room, Area, D5 CNTRL 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 YM NEI UE1 N/Arl 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 NEI UE' N/AE degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YlK NEI U- 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 YM NE UE N/AU interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

The light fixtures are secured to a light metal strut. 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, eg., on the order of about 35 feet from the SWEL item.

PROPRIETARY iiipeRrý,Tiei wITfffOLD FROm FbeLTCE DiseLOsbRE Sheet 2 of 7 Status: YEl- NZ UE-Area Walk-By Checklist (AWC) Location: B3ldg, D5/D6 Floor El. ý Room, Area' D5 CNTRL

5. Does it appear that the area is free of potentially adverse seismic YN] NEI UEI N/AEl interactions that could cause flooding or spray in the area?

The fire protection piping in the adjacentroom with mechanical couplings is seismicallysupported, There is no seismic flooding concern.

6. Does it appear that the area is free of potentially adverse seismic YN NEI UE! N/AEI interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YEI N[D UE! N/AE!

interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)? There is a trash receptacle between cabinets D5-RTV- cabinet and remote terminal unit D5. Site engineeringhas reviewed and dispositioned this observation. 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 NE! UE!

adversely affect the safety functions of the equipment in the area? There is a desk and monitor next to remote terminal unit DS, and they are securedproperly to the wall and with straps. The paperboxes stored on the bottom shelf are not deemed a seismic hazard. Comments (Additional pages may be added as necessary)

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report S1INS-Il AII'"WTHHOl'-D FROM PUBLIC DISCILOSUR The remaining pages are withheld from public disclosure.

e WPRO-PRIETARY C eNFERliTtAN WITHHOLD FROM PUBLIC ISeLOsURE" Sheet 1of 5 Status: YZ N[E UE] Area Walk-By Checklist (AWG) Location: Bldg. D5146 Floor El. ý Room, Areal D5 ENGINE 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 ND UD N/AD1 potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

There is.one anchor nut for airreceiver246-034 that-does not have a full thread. The airdryer296-033conduit supporthas an anchorbolt with a largeprojection. There is no impact on seismic capacity.

2. Does anchorage of equipment in the area appear to be free of significant YO ND UDI N/AD-degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YE ND UD N/A-I 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 ND UD N/AD interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

The fire protection piping is seismically braced,so there are no issues with the mechanicalcouples. 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,

  'PTOPTT-Ph1T7ŽJY          T-NrPOPMAETTN             W:WT;TTITT.f        PPRO4 PTT-PT.TP~T~lTOIP Sheet 2 of 5 Status: YN NEI UE-Area Walk-By Checklist (AWC)

Location: Bldg. D5/06 Floor El. ý Room, Area' D5 ENGINE

5. Does it appear that the area is free of potentially adverse seismic Yt NEI UOi N/A-interactions that could cause flooding or spray in the area?

6. Does it appear that the area is free of potentially adverse seismic YM NEl Ui N/Ar interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YM NO UE N/AE 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 U0 adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) There were no seismic housekeeping issues. There are cable tags on the floor near airreceiver246-032, and duct tape was found on a rigging beam. Neither of these observations are a seismic concern. [ Evaluated by; Wafte rDiorrlvic Date: -O it114 t K le riesl __________Date: __________Q

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report QI IM101 IAIITrUUIVlr% -Df"lnl DI IDI IIf I%10'1 nIOl ID-The remaining pages are withheld from public disclosure.

Sheet I of 3 Status: YM NE- Ur-Area Walk-By Checklist (AWC) Location: Bldg. D5/D6 Floor El. Room, Area, D6 ENGN 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 N" UO N/AO 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 NE UC"] N/AC1 degraded conditions7

3. Based on a visual inspection from the floor, do the cable/conduit YZl NO U3 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 NCI U" N/AO interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

All equipment has modem seismic design features. 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 ftrm the SWEL Item.

   "PRE)EIRIETARY          ilffPeRýýT+/-eii            ... T.Y.....WI P-ROM PUlLIC B*.....S..RE                "

Sheet 2 of 3 Status: YN N[] UM Area Walk-By Checklist (AWC) Location: Bldg. Q5/06 Floor El. Room, Area' D6 ENGN

5. Does it appear that the area is free of potentially adverse seismic YO NO UEI N/A5 interactions that could cause flooding or spray in the area?

The fire protectionpiping rodhung sprinklersystem has threaded connections and could pose a flooding hazardff this piping failed during a seismic event. Site engineeringhas reviewed this observation andconcluded 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 YZ NE ULJ N/AU interactions that could cause a fire in the area?

There were no sources noted.

7. Does it appear that the area is free of potentially adverse seismic YN NE UO N/AO interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

The ladderstorage hooks and fire extingusherbrackets are adequate.

8. Have you looked for and found no other seismic conditions that could YZ NEI UO adversely affect the safety functions of the equipment in the area?

The electric heaterrods are ductile, so they are seismically acceptable. Comments (Additional pages may be added as necessary) Evaluated by: Walter Dorfdevic V Date: /// " -, 2-Dennis Z.rcher .6 .. "-?X ...

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SI lI WIlrlllTHHO-LID FROM PUBLIC DISCLOSU The remaining pages are withheld from public disclosure.

PR.PRIETARY .- iiNpeRNATIOii wEETffffefn iPROel PUbLICf BEIOCLJuRE Sheet 10 4 Status: YD N91 UI-E Area Walk-By Checklist (AWC) Location: Bldg. D/D.6 FloorEl, Room, Areal 26 1US Instructions for Completintg Checklist This checkilst may be used to documont the results of the A%~a Walk-By near one or itioro SWEL Itoine& The space below each of the following qoestlons may be used to record the results ofjudgments and findings. Additional space is provided at the end of this chec*kliat for docunmenting other cormnents.

1. Does anchorage of equipmient inthe area appear to be free of YlR NOI UJO N/AD potentially adverse seismic conditions (if visible without neoesswily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant YU NDI U- N/AED degraded coniditions?

3. Based on a visual inspection fiom the floo; do the cable/conduk YM ND UOI N/AD raoeways and HVAC ducting appear to be free of potentially adverse scsinio conditions (e,g, condition of supports Is adequate and fill conditions of cable trays appear to he Insido acceptable limits)?

4. Does it appear tlht the areais toee of potentlally adverse seismic spatial YIE NO UE" N/AD interaotions with other equipment in the area (e.g., ceiling tiles and lighting)'/

There are open "S"hooks on tight fixturos above and adjecent to breaker26. CAP 1352001 hasbeen Initiated to evaluate the open "S" hooks Identifiedduring these welkdowns. In addltion to writing this action request, WR B3866 has been Initiatedto addressthis observation.

 'If the room In whiach the SWELitem Islocated la very large (ip., Turbine Hall), the area selected should be descrlbed.

This selected area should be based on judgment, eg., an the order of about35 featfrom the SWELitem.

Sheet 2 of 4 Area Walk-By Checklist (AWe) Location! Bldg. O . Floor l. ý Room, Areal 26 BU

5. Does it appear that the area is free of potentially adverse seismic YO NUI UM] MAD int6raotions that could cause flooding or spray in the amia?

There Is no lire protection piping in the room, therefore there is no seismic tnterection concerns. 6&Does it appear that the area is free of potentially adverse seismic YN NEI U0] N/AC interaetions that could cause a fire in the area?, 7, Does It appear that-the area is fi6 of potrntally adversc siolsmic YM NO] Ut N/AD interactiong associated with housekeeping practles, storage of portable I equipment, and teraporsal Inatallations (o,g., 8caffolditg, lead shielding)? t There are two tadde4 stored on one hook while anotherhook nearby s I Unused. It is recommended that only one ladderbo placed on one hook. i 8, Have you looked for and found no other seismic conditions that could YU* No Ut adversely affect the safety fRotions of the equipment in the area? I- _Cor nwntg (Additional pages imay bo added as necessary) Evaluated by, War~a 2kah IW - Date; ~ Dennis Zercher/5.,' 47 ..

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FRO.M PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETARYý INFO)RMATION WIThhOLD8H FReM PUDLICe 9!SeELOSUR Sheet 1 of 4 Status: YO* NL- U-Area Walk-By Checklist (AWC) Location: Bldg. Q5/06 Floor El. Room, Area, D5 FUEL OIL 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 UEI N/AE1 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 NEI UE] N/AO degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YZ NM UtJ N/AOI 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 UO N/AO 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.

DROpRIEET-ARY iiiPORr.T-ieO WIT-IHGIOLD FROM PUBLIC DISCLOSQURET' Sheet 2 of 4 Status: Y[N NF U-- Area Walk-By Checklist (AWC) Location: Bldg. Q5/06 Floor El, Room, Area' D5 FUEL OIL

5. Does it appear that the area is free of potentially adverse seismic YZ NO UEI N/AEI interactions that could cause flooding or spray in the area?

The sprinklerpiping is well supported.

6. Does it appear that the area is free of potentially adverse seismic YZ NEI UEI N/AEJ interactions that could cause a fire in the area?

There is no leaking oil.

7. Does it appear that the area is free of potentially adverse seismic YOI NEI U" N/AEl 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 NEI U1 adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievic Date: /A / 4.r " Kyle Kriesel ___/0_ 4__2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report S'U'S WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Z-.0-/ Z_ 1ý1 _*.Lr', _. Z"-IL..L .L J-r uW"L.lu.g-IX J.L ý_,/.L4 wiTfffiLD L~~ rW. L L'E'.~k~iFROm

                                                                                               .'.J.d iUDLiCi    EDi 'eL"suRE Sheet 1 of 3 Status: YZ ND U7-Area Walk-By Checklist (AWC)

Location: Bldg. D5/D6 Floor El. ý Room, Area' 211/212 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 YV NEI UI N/AE]

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& NEI UO N/AD degraded conditions?

There is minor surface corrosion on the support angle for 273-031 air handler. The condtion is noted but it is not significant.

3. Based on a visual inspection from the floor, do the cable/conduit YZ ND 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.

        ~D'Y!D~rT'.DV
        .K IA
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                                                      - T  m~T      p'o"H     IDTTDTTp7     l"'p Sheet 2 of 3 Status: Y20 NE] UJ-Area Walk-By Checklist (AWC)

Location: Bldg. D5/D6 Floor El. ý Room, Area, 211/212 BUS

5. Does it appear that the area is free of potentially adverse seismic YIN N['l U[] N/ACl interactions that could cause flooding or spray in the area?

The fire protection piping in the area is seismically braced,so it is acceptable.

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 Y0 NEl ULI N/AE]

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 NO7 UO adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Walter Dop evic Date: /,2,0o Ao/0i-K le Kriesel

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 2 Status: YN ND UL Area Walk-By Checklist (AWC) Location: Bldg. D5/D6 Floor El. ý Room, Areal 221/222 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 YZj NEI ULE N/AU potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant YNI NEI UI N/ALE degraded conditions?

3, Based on a visual inspection from the floor, do the cable/conduit YZ NEI ULE N/ALE 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/AL]

interactions with other equipment in the area (e.g., ceiling tiles and lighting)? There are open "S"hooks for lighting fixtures throughout the room. They are not a seismic concern. CAP 1352001 has been initiatedto evaluate the open "S"hooks identified during these walkdowns. In addition to writing this action request, WR 83556 has been initiated to 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.

D~2DDTF~'~' "-"" T1TTT'T"~T.fl P1~M DrTr~T.Tr flTi~rT.rTP1~ Sheet 2 of 2 Status: Y[] Nfl- Ufi] (AWC) Area Walk-By Checklist Location: Bldg. D5/D. Floor El. Room, Area' 221/222 BUS

5. Does it appear that the area is free of potentially adverse seismic YN NO Ui N/AO interactions that could cause flooding or spray in the area?

There is no fire protection piping in the room.

6. Does it appear that the area is free of potentially adverse seismic YZ NEI U7 N/AU]

interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YN NO UE1 N/AO interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

The housekeeping throughout the room is exceptional.

8. Have you looked for and found no other seismic conditions that could YZ NO U-adversely affect the safety functions of the equipment in the area?

Tie wraps are used to secure and guide the grounding straps. These tie wraps do not pose a seismic concern. Comments (Additional pages may be added as necessary) Evaluated by: Dennis Zercher J Date: /P.-12,gZ Walter Diordievic fff __

      "R ORe IT            RY iNFO     AST*T1r          WIrThThOTTTL-D     FROM PUBLI'*r       "      ISCLOSURE     r Sheet 1 of 4 Status: YN NF1 ULI Area Walk.By Checklist (AWC)

Location: Bldg. D5/D6 Floor El, Room, Area1 D5 MECH 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 U-- N/AlU 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 NEI U00 N/Al degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YE NEI U- N/AU]

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 electric heater is rod hung and ductile.

4. Does it appear that the area is free of potentially adverse seismic spatial YZ NO U- N/AU interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

The light fixture "S" hooks are closed. 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.

PROpRIETARY .t........Ti. wiT.... F-R .M PUDLIC. DBIO*GCL URE Sheet 2 of 4 Status: Y0 NE uE Area Walk-By Checklist (AWC) Location: Bldg, D5/06 Floor El., Room, Area' 05 MECH

5. Does it appear that the area is free of potentially adverse seismic YZ NDI UDJ N/AEl interactions that could cause flooding or spray in the area?

The fire protection piping is seismically designed.

6. Does it appear that the area is free of potentially adverse seismic YIE NEI 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 Yo ND UD] N/A[-

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 Ytg ND UD adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Walter Diord'evic Date: Kyle KrIesel /( Z - "g,/2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE

Z'Ix EL Z X. L J_2J L X-'11N L L11'11 '1.J1.1zI_-L _L kJ.L' WITHHOLD FROM PbeLIC DISCLOSURE Sheet 1 of 2 Status: Y[I NF- U-Area Walk-By Checklist (AWC) Location: Bldg. 05/06 Floor El. ý Room, Area' D5 RADIATOR ROOM 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 YN1 NEI UJQ N/AU]

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 NEI UE N/AU degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YZ NEI UU- N/AU 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 NU UU N/AU 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.

Sheet 2 of 2 Status: Y[ Nl UF-I Area Walk-By Checklist (AWC) Location: Bldg. 05/06 Floor El. Room, Areat 05 RADIATOR ROOM

5. Does it appear that the area is free of potentially adverse seismic YCK NEI UI N/AO interactions that could cause flooding or spray in the area?

The fire protectionpiping with mechanicalcouplings is seismically braced and Is therefore adequate.

6. Does it appear that the area is free of potentially adverse seismic YED NEI UO N/AC interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YO NE UFI N/AC interactions associated with housekeeping practices, storage of portable equipment, and temporaiy installations (e.g., scaffolding, lead shielding)?

8. Have you looked for and found no other seismic conditions that could YID NEI U-adversely affect the safety functions of the equipment in the area?

The drip funnel is acceptable. Comments (Additional pages may be added as necessary) Evaluated by: Walter Diordievic//1 Date: 42 2-K~yle Kriesel__ _____

Sheet I of 7 Status: Y[- NZ U[-' Area Walk-By Checklist (AWC) Location: Bldg. SSCN Floor El.

Room, Area, 22 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 YE-- NO UI-- N/ADl potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

The startingair indicator(PI-11979) for the 22 diesel driven cooling waterpump has a bracket with provisions for four screws. However, only two screws are attachingthe indicatorto the concrete wall. CAP 1351936 has been initiatedto evaluate this observation, and WR 83545 was initiated off of this action request to correct the condition. After further evaluation by plant engineering,it was determined that the safety classification of this indicatormay not meet the requirements of the plant's equipment classificationprocedure. Pl-11979 is currently classifiedas non-safety relatedbut it may need to be classified as safety related. CAP 1352398 has been initiatedto evaluate the safety classificationof the starting airindicator.

2. Does anchorage of equipment in the area appear to be free of significant YZ NDI U-- 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)?

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.

PROPRIETARY INFORlATION - WITHHOLD FROM PUBLiC DISCLOSURE Sheet 2 of 7 Status: Y[] NN U[] Area Walk-By Checklist (AWC) Location: Bldg. SSCN Floor El. ý Room, Area' 22 DD CLWP

4. Does it appear that the area is free of potentially adverse seismic spatial YO NEI UI- N/ADl interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

The 21 Diesel Cooling Water Pump area heater EH-8 has a support in the back that is not clearly visible. However, the room heaterappears to be rod hung and will exhibit ductile behavior in a seismic event. Based on this, the SWEs judge that the support for the room heaterhas adequate seismic capacity.

5. Does it appear that the area is free of potentially adverse seismic YZ NEl U[I 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 YZ NEI U-I N/AE-interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic Y[ NCI UL 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 YE NEI UL-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: /i -'-(2 Dileep Cheropalle 2.- ".J

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROMfim PIUBLIIC DISCLOSUR The remaining pages are withheld from public disclosure.

T PR -pRiETAIY -INFRMATi-i, wiEThhfOL FR-m PUBLIC' "iTeLOeuRTHT Sheet 1 of 2 Status: Y[ N-- U[ Area Walk-By Checklist (AWC) Location: Bldg. SSCN Floor El. ý 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 Y0E Nr UE] 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 YZ NEI UO N/A-degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YS NE UM 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 YO NEI UC" N/ACl 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.

                         .L WAN A ~J+/-~h7Jr1i .LSJLN -
 .L +/-'.ASX JX.tLzJ +/-.n+/-~                                   V~J. +/-.[rl~iiJ A [.JI . ULj +/- s.. i .1 . 'J'.'i ff   .1X11.T (AWC)

Checklist Sheet 2 Of 2 Area Walk-By Status: YIZ NEI u0 Area Walk-By Checklist (AWC) Location: Bldg. SSCN Floor El, ý Room, Area' SOUTH

5. Does it appear that the area is free of potentially adverse seismic YE NEI UI- N/AU interactions that could cause flooding or spray in the area?

The fire protection piping 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 YV NO ULI N/AU 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 portble 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 YE NEI UUI adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Wafter Dogrdevic Date: f ,-r 1a-Dennis Zercher

PrO'PRIETARY INFORtTITN WI.THHOL. FR.M

                                                       .....                 . PUBELC DI*STLOTURE Sheet 1 of 2 Status: YZ* N-- U[-

Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. Room, Area' TRN B EVENT MON Instructions for Completing Checklist This checklist may be used to document the results of the AreaWalk-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 UD" N/AZ 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 UrI N/AZ degraded conditions?

There is no corrosion.

3. Based on a visual inspection from the floor, do the cable/conduit YN NEI UZ- 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)?

4. Does it appear that the area is free of potentially adverse seismic spatial YN NE-] UZ N/AZ 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.

PRFReREHTARY +/-iiTORmATiei WITHHE)LD FRROM EPUD~iCeB1SeE SURL~tE Sheet 2 of 2 Status: YZ NE] U-Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. ý Room, Area' TRN B EVENT MON

5. Does it appear that the area is free of potentially adverse seismic Y[D NEI U[-] N/AD interactions that could cause flooding or spray in the area?

Supply and return lines are laterally unrestrainedand may subject cooler nozzle to large movement. 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 free of potentially adverse seismic YN NEI ULI N/AD interactions that could cause a fire in the area?

All of the block walls in the areaare safety related.

7. Does it appear that the area is free of potentially adverse seismic Y[D ND UO N/AD interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

All of the "S"hooks for lighting fixtures appearto be closed.

8. Have you looked for and found no other seismic conditions that could YZ ND UrD adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: __ __ _ __ _ __ __ _, _ _ __ _Date: _/_,_, 2,.2__ _... V ;4o

PROPRIETARY WNFORMAT]Eei( WTIIIIOrB FRE PU"thIC DTSCE"TTURE Sheet 1 of 8 Status: YE] NM U-- Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El.

Room, Area, 21 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 YM] NM UI- N/Ar-potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

The guard to belt drive on 121 instrument air (013-011) is missing two anchorbolts. CAP 1352975 has been initiatedto evaluate this observation. Additionally, WR 83793 has been initiated to address the condition.

2. Does anchorage of equipment in the area appear to be free of significant Y[K NEI Ur-I N/AE]

degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YO NEI Ur- 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 YO- NI U-I N/AL]

interactions with other equipment in the area (e.g., ceiling tiles and lighting)? Chain fall for 2AF- 13-1 is within eight inches of interactingwith MCC 1A Bus 1. The chain fall needs to be restrained. CAP 1352961 has been initiated to address this observation. In addition to writingan action request, WR 83796 has been initiated to address this condition. 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.

PROPRIETARY !IiFeRMATieli 1TR 1ONWIEOL PROPRI~~ F-ROM PUBLICe DICOLOSURB TN13f4A Sheet 2 of 8 Status: Y[] NZ U-Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El.

Room, Area' 21 AFWP

5. Does it appear that the area is free of potentially adverse seismic YN NO UD 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 YE NE ULI N/AR interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YMl NO UD 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 NEIr U[M adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce M. Lor ýZ A. _*Date: /A- Z /- / ?__ J0 .- ?,'2 - Z 6 .4 --Z-

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

           . it-x)VittT1fkt INVGRH.KATIeN                  WET,      OlTTE"FROM PUTETrC       T       1SC-1OrTURT Sheet 1 of 11 Status: YO NX UL--

Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. ý Room, Area' 21 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 YO NDI UD1 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 YO NDI UD N/AD degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YDI NO UO 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)?

The clamp of the conduit above Panel227 is loose. The clamp bolt is loosely attached to the Unistrut which is about 6 ft above the floor. CAP 1353370 has been initiated to evaluate this observation. Additonally, WR 83887 has been initiatedto address this observation.

4. Does it appear that the area is free of potentially adverse seismic spatial YZ NDI UD' N/AD 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.

     /   PROPRIETAkRY iNp~m.ATeiO                  -   W9ETffffeh    FROE.I EbqLie BDI3CLOs:RE Sheet 2 of 11 Status: YE] NM UL--

Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. _ Room, Area' 21 BATT

5. Does it appear that the area is free of potentially adverse seismic YZ NEI U[:] N/AE1 interactions that could cause flooding or spray in the area?

6. Does it appear that the area is free of potentially adverse seismic YE NEI UE1 N/AE-interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YZ NEI UE- N/AEI interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

The portable eye wash station is chained to the wall next to the 21 Battery Rack. This is acceptable as configured.

8. Have you looked for and found no other seismic conditions that could YO NE-] UE-adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Bruce M. Lo a Date: /"5-' 2/-{ Dileep Cherlopalle ,,C_

                                           . .     *VIh4 LL,,ý   ,

L.. )

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report 1 101 A- IITULIInI r% CEDVtK0R DIIDI It- rll*f'Il fll 1D0 The remaining pages are withheld from public disclosure.

       .. R.RiE.TARY iHeOmRMt, iO-N                  -   w+/-ITHHOLD FROM PUBLIC DISCLOSURE Sheet 1 of 10 Status: YE" NER UL Area Walk-By Checklist (AWC)

Location: Bldg. TURB Floor El. Room, Area: 22 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 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 YN NE UE N/AE 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-NO UE N/AE]

degraded conditions? The 123 instrument aircompressorguard is missing a few anchors. CAP 1352154 has been initiatedto document this observation. WR 83594 has also been initiated to address this condition,

3. Based on a visual inspection from the floor, do the cable/conduit YM NEi UC' 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)?

' 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.

tVIZUŽJA.LL&VTAIU iffti'U1&-'IAIjNJ WI+/-TIUIULI)~ iICdii UL' JJIU~t U+/-ULJtbtJbttfl Sheet 2 of 10 Status: Y-- NZ UU-Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. m Room, Areat 22 AFWP

4. Does it appear that the area is free of potentially adverse seismic spatial YE' No U- N/AD interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

1. The fire extinguisher (301) is on a shortbent bracket. It is recommended that the bracket gets bent back to normal (horizontal) position or is replaced.

CAP 1352094 has been initiatedto document this observation. From this action request, WR 83577 has been initiatedto address the bracket. 2, Open "S"hooks were identified on the following fluorescent lighting tfixtures: a, west of the turbine driven auxiliaryfeedwater pump

b. above door42

c. above the 12 motor driven auxiliaryfeedwater pump (only I chain)

d. above 124 AC CAP 1352001 has been initiatedto evaluate the open "S"hooks identified during these walkdowns. In addition to writing this action request, WR 83556 has been initiatedto address this observation.

5, Does it appear that the area is free of potentially adverse seismic YN NEI UM N/AD interactions that could cause flooding or spray in the area? The 1-1/2" fire protection sprinkler lines are flexible and threadedso they could be a potential spray hazardIf they are filled with water. The lines are over the motor driven and turbine drive auxiliary feedwater pumps. Site engineeringhas reviewed this observation and concluded there is no seismic concern. Please refer to the table contained InAppendix F for the disposition of this observation.

6. Does it appear that the area is free of potentially adverse seismic YM NEI UD' N/AEl interactions that could cause a fire in the area?

i R TWITiT T1hOL FROM PUBLICT DTIOCLC(UT9RET' Sheet 3 of 10 Status: YEQ NEI U1-Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor EI.

Room, Areae 22 AFWP

7. Does it appear that the area is free of potentially adverse seismic YEI NM UE- N/AI]

interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

1. The chain fall nearTB2395 could potentially impact tubing on concrete wall. It is recommended that this chain be restrained.

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. 2, A fire protection break glass hammer is adjacent to the 123 air compressorcontrol panel 70557. The hammer could potentially Impact the nearby airtubing. 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.

8. Have you looked for and found no other seismic conditions that could YN NI] UE]

adversely affect the safety functions of the equipment in the area? Comments (Additional pages may be added as necessary) Evaluated by: DennisZercher Date: /,v,.4; - Zo/z. Wally Diordievic Date: / /5f L

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

PROPRIETA-RY +/-iiEFRmAFTiO WI1THHOLD~i FROM PUBLICe DIGGCLOURB Sheet 1 of 6 Status: YI' NO UO Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El ý Room, Area' 22 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 YN N[:] UE] N/An potentially adverse seismic conditions (if visible without necessarily opening cabinets)?

2. Does anchorage of equipment in the area appear to be free of significant YIZ NC UC1 N/AC degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YV NEI U'- 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)?

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.

PROPRIETARY i..CRr...Ti. . .WITHHOLD. PRM . PUBLIC DICLOSE Sheet 2 of 6 Status: YE[ NO UJl" Area Walk-By Checklist (AWC) Location: Bldg, TURB Floor El.

Room, Area' 22 BATT 4, Does it appear that the area is free of potentially adverse seismic spatial Y[:] NZ UEJ N/AE2 interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

1. Some of the "S"hooks for lighting fixtures in the area are not completely closed. None of the lighting fixtures with open "S"hooks are over the batteries.

CAP 1352001 has been initiatedto evaluate the open "S"hooks identified during these walkdowns. In addition to writing this action request, WR 83556 has been initiatedto address this observation.

2. The counterweight "S"hook is also open and the counterweight could fall to the floor or against PNL 22.

CAP 1352343 has been initiated to evaluate this observation. In addition to writing this action request, WR 83645 has been initiatedto address the condition.

3. Eyewash station is securely stationed to the wall. However, the water supply canisteron the cart is secured by a bungee cord which may not be an adequate restraint.

Site engineering has reviewed this observationand 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 YN NEI U'- N/AED interactions that could cause flooding or spray in the area?

6. Does it appear that the area is free of potentially adverse seismic YN NO- UE N/AFJ interactions that could cause a fire in the area?

WITThT1"OLD FREW - PUBI"-C IT'LTT Sheet 3 of 6 Status: Y7 NZ UE-Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. ý Room, Area, 22 6ATT

7. Does it appear that the area is free of potentially adverse seismic YO No2 UI"J N/AU interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

See question 4 regardingthe eyewash station.

8. Have you looked for and found no other seismic conditions that could YN NM UEI adversely affect the safety functions of the equipment in the area?

The portable batterycharger 11 is not energized. There are no seismic issues. Comments (Additional pages may be added as necessary) Evaluated by: Walter Dordievic / Date: [ I. Dennis Zercher L2 14e 4, 42 .-22 -_2 O,_"_.

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

     -PRePRIETARY             1NFeRMAEPEEE)!4              RO IFTO  hTLDWTT  FREW        PUTBLT   T1        IT  CL    T'"

Sheet I of 4 Status: Y[E NE U" Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. Room, Area, BUS 121 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 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* NCI UCI N/AC degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YZ NCI UC N/AE]

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)? 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.

  -      .PRO.PRiET.ARY    iiF-RA..T......           w. Ti....iO.      FR. m PLLiC ........        UR.

Sheet 2 of 4 Status: YN NO UEJ Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. ý Room, Area, BUS 121

4. Does it appear that the area is free of potentially adverse seismic spatial YE NEI UrO N/AEl interactions with other equipment in the area (e.g., ceiling tiles and lighting)?

1. The fluorescent light chains are in contact with the cable trays as wefl as the flex conduit, This is adjudged not to be a seismic concern.

2. Duct tape is preventing a chain for a fluorescent light fixture from making contact with a conduit. This type of restraintis not necessary and should be removed. It is a housekeeping issue and not a seismic concern.

CAP 1352191 has been initiated to evaluate this observation. Additionally, WR 83605 hasbeen initiatedto correct the condition,

3. The ladderadjacentto the G9 column is adjusted so that the center of gravity is beneath the ladderstorage hooks. It is acceptable.

5. Does it appear that the area is free of potentially adverse seismic YZ N[:] Ul] NIAEI interactions that could cause flooding or spray in the area?

Supply and return lines for the 121 switchgearroom unit coolerare unsupportedlaterally acrossthe room, and may not be adequately restrainedto prevent excessive nozzle loads on the unit cooler. Site engineering has reviewed this observationand concluded there is no seismic concern, Please refer to the table containedin Appendix F for the disposition of this observation..

6. Does it appear that the area is free of potentially adverse seismic YO NI] UCl N/AI]

interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YM NO] U-I N/Al-interactions associated with housekeeping practices, storage of portable equipment, and temporary installations (e.g., scaffolding, lead shielding)?

J rKjfqLAI JA4dftIA

                                '  l     +/-I d i 4   W+/- I' I ILt) +/-31:9 i  Vt)

PUB11- PINGLi L0UR Sheet 3 of 4 Status: Y*I NO U"- Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El, Room, Aveal BUS 121

8. Have you looked for and found no other seismic conditions that could YN N[] U-adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) Evaluated by: Walter Qrdlevic hDate. Dennis Zercher j___C7 ___-T_

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 13 Status: YZ Nil] UOl] Area Walk-By Checklist (AWC) Location: Bldg. TURB 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 NEI Ur- N/AU 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 Nil UO N/AD degraded conditions?

3. Based on a visual inspection from the floor, do the cable/conduit YZ NEI Ur] 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)?

The cables going into relay racks 2AMR1,2ARP1, 2ARP2, 2ARP3, 2ARP4, and 2ASG2 are each two feet long. They are tied to a single unistrutwith tie wraps. The unistrutmay not be adequate to support the load from the cables, on top of the cable tray load it is already supporting. Site engineering has reviewed this observation andconcluded there is no seismic concern. Please refer to the table containedin Appendix F for the disposition of this observation..

4. Does it appear that the area is free of potentially adverse seismic spatial YO NEI UD] N/AD1 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 YDl NW- U- N/A[

interactions that could cause flooding or spray in the area? There is no fire protectionsystem in the room. The room has a Cardox system. 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.

4. .LS'.Jt .L1/4Z.LJ +/-r-1a~ +/- tIN £ 'SJ'.A'ifl4. .. L~..J.L' TV 4.. A.II+/-+/-'..J4.4J.J 4. ~'.j+/-+/- A. bt.LUb UIt.t.

Sheet 2 of 13 Status: YZ NF-- U-- Area Walk-By Checklist (AWC) Location: Bldg. TURB Floor El. ý Room, Area, RELAY

6. Does it appear that the area is free of potentially adverse seismic YEI NE] U[] N/AO interactions that could cause a fire in the area?

7. Does it appear that the area is free of potentially adverse seismic YN NO- Ur N/AZ 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 NEIUO adversely affect the safety functions of the equipment in the area?

Comments (Additional pages may be added as necessary) There are several large rolls of abandonedcable that are tied together with cable ties to unistrut. These abandoned cables are near MCC 2BMRI and TB-2228. Site engineeringhas reviewed this observationand concluded there is no seismic concern. Please refer to the table contained in Appendix F for the disposition of this observation. Evaluated by: Dileep Charlopalle c- 1.. r, Date: to - 2:Iii - -i.. Bruce M. Lorv ¢ 2. 3-, 2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report S'J.NSI WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Sheet 1 of 10 Area WalkwBy Checklist (AWO) status; Y[] NN U[ Locatlon: Bldg. AUX . oor 81. ý _ Room, Aea' CNTRL RM butsruclions for Completing Checkdist This cheoldist may be used to document tre 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 ofJudgnients and findings. Additional space is provided at the end of this checklist for documenting other comments, 1, Does anchorage of equipment in the are appear to be free of Y1 NO 1U15 N/AC potentially adverse seismio conditions (if visible without necessarily opeoing'eabinets)?

2. Does anchorage of equipment in. the area appear to be free of significant Y9 NQ 3O5 N/AC degraded conditions?

3. Based on a visual inspcctiou ftom the floor, do the cable/condult Y0 NEI M1 N/AC' raceways and HVAC duoting appear to be free of potentially adverse seisnio 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 YDl N9 UiO N/AC interactions with other equipment in the area (e.g., ceiling tiles and lighting)? There Sre lighting diffusers fled.off to the support grid. Unit 1 and Unit 2 "C"panels have a fluorescentlight fixture on chains too close (within I"- 2'9 to the panel, CAP 01352209 has been Initiated to evaluate this observation.

5. Does it appear that the area Is free ofpotentlally adverse seismic YE NE U1 N/AC]

interactlons that could cause flooding or spray in the area? I -

6. Does it appear that the area Is free of potentially adverste seismic YC NO 1U NT/AC interactions that could cause a fire in the areu?

If the room In which the SWIL Ite, Is lo[ated is very large (eg., Turblne Hall), the area selected shouid ha described. This selected area should be based on judgmont, e.g., o thfe order of about ar fet from the SWL item.

WITHHEOLD FROM PUBLIC DISCLOS9URE Sheet 2 of 10 Status: Y[] NOUIX i Area Walk-By Checklist (AWO) Location: Bldg. AIDL... Floor El Room, Areas, CNTRLPM 71.Does it appear that the area Is firee of potentially adverse seimic YO NO UO N/AD interactions associated with housecoping pracdcas, stmage of portable equipmlent and temporary installations (*g,, scaffolding, lead shieldflig)?

1. Trho trash can next to the racks R23, R24, R13, and R14 are Immedliatoly adjacent to the racks, whiob violates the se snic housekeeping procedure.

Sie engineering has reviewed this observationand concluded there Is no selseia concern. Pleaserefer to the table contelnadIn Appendix F for the disposition of this observation.

2. Step ladderadjacentto racks R23, R24, R13 and R14 is also loo close to the racks, Thu wheels should be chocked.

WR 83584 has been Initlated to address thls observatIon,

3. There were several open S-hooks on light fixtures (nearestthe panel In most cases).

CAP 01352001 was initiatedto evaluate this observation,Off of CAP 01352001, WR 83558 was Initiatedto address this observation.

8. Have yiu looked for and found no other seismic conditions that could Y0I NEI UU adversely affect the safety thncdons of the equipment in the area?

Unit I and Unit 2 "E"panels have silde.panels that have slidout of position. This Isa housekeeping issue end not a seismic Concern. CAP 01S52102 has been Initiated to evaluate this observation. In addifion to writing an action request, WR 83570 has been initiatedto addressthis observation.

PRePRIETARY EENFEnr.ýT-ou ;qiTIIIIOD W FRGM PT9BL iC DI 1 CLO Sheet 3 of 10 Status-, YL1 No UL Area Walk-By Checklist (AWC) Location: Bldg. AUX FloOrEl. Roow, Areal GINTLRM Commeits(Additional pages may be added as necesary) Some desks are secured to the well. Not a seismic concern. L. The filing cabinetsadjacent to the main control boardIn both Unit It and Unit 2 ar close to the main control board. CAP 1357683 has been Initiated to evaluate this observation. 2, A set of drawers next to the In-core logic selection switoh panel are close to the panel. Site engineering has revIewed this observation and concluded there /a no seismlc concem; Please refer to the table contaln*d InAppendiy Ffor the disposition of thMs observation. 3.' The ce artjacenlto the Protectl6h Systems III and the cartadjacentto cabinets RPIA, -2,and -3 in Unit I am oclose to the equipment. -The chain Is not used to restrainthe carts, CAP 1357686 has been Initiatedto evaluate this observation..

4. Fire extinguisherbiacket 224 has a rotatecd bracket (into the Insulation) and should be repaired.

WR 83584 has been Initiated to address this observaton,. Evaluated by, MaltyrO ardievi" Date: I L-nlM~seerhr Date; J 20 ol

                                                                                                                    .1 i I
                                                                                                                  ~I

Praiie UIt IlandNuclar Gneraing lant-Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS! WITHHOLD FROM PUBLIC DISCLOSURE The remaining pages are withheld from public disclosure.

Prairie Island Nuclear Generating Plant - Unit 2 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, 30 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) 2R29 in 2015. An updated submittal report will be provided 60 days following the end of RFO 2R29. Table D-1: Summary of Inaccessible Equipment Equipment ID Unit Description Reason for Inaccessibility D5 DSL GEN Internal inspection requires 50000 2 BENCHBOARD equipment to be out of service 21 BATT CHG 2 21 BATTERY CHARGER Protected equipment - no access 21 INV 2 21 INVERTER Protected equipment - no access 21 SFGDS SCRNHSE Need scaffold to verify knee brace 232-281 2 ROOF EXHT FAN as part of anchorage verification 258-011 2 21 CLG WTR STRNR Protected equipment - no access 274-013 2 23 CNTMT FCU In containment - requires outage MN STM FR 21 STM GEN CHNNL I RED F 2FT-464 2 XMTR In containment - requires outage D-1

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table D-1: Summary of Inaccessible Equipment Equipment ID Unit Description Reason for Inaccessibility 2 PRZR (CHNL III-2LT-428 2 BLU)LVL XMTR In containment - requires outage 21 STM GEN LOOP A CHNNL I-RED LVL 2LT-461 2 XMTR In containment - requires outage 32 INV 2 23 INVERTER Protected equipment - no access B25/LOAD BUS 25 SFGDS LOAD SEQ CAB 2 SEQUENCER CABINET Protected equipment - no access BUS 211 480V Internal inspection requires BUS 211 2 SWITCHGEAR equipment to be out of service BUS 221 480V Internal inspection requires BUS 221 2 SWITCHGEAR equipment to be out of service BUS 222 480V Internal inspection requires BUS 222 2 SWITCHGEAR equipment to be out of service BUS 26 4.16KV Internal inspection requires BUS 26 2 SWITCHGEAR equipment to be out of service 22 CRDM SHRD CLG CV-39417 2 COIL SPLY CV Protected equipment- no access 21 CRDM SHRD CLG CV-39419 2 COIL SPLY CV Protected equipment - no access MOTOR CONTROL Internal inspection requires MCC 2A1 2 CENTER 2A BUS 1 equipment to be out of service MOTOR CONTROL Internal inspection requires MCC 2K1 2 CENTER 2K BUS 1 equipment to be out of service MOTOR CONTROL Internal inspection requires MCC 2K2 2 CENTER 2K BUS 2 equipment to be out of service MOTOR CONTROL Internal inspection requires MCC 2L2 2 CENTER 2L BUS 2 equipment to be out of service D-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table D-1: Summary of Inaccessible Equipment Equipment ID Unit Description Reason for Inaccessibility 24 FCU CLG WTR OUTL MV-32156 2 ISOL MV A In containment - requires outage DISTRIBUTION PANEL Internal inspection requires PNL 21 2 21 equipment to be out of service INSTRUMENT BUS III Internal inspection requires PNL 213 2 PANEL (BLU) 213 equipment to be out of service AC DISTRIBUTION Internal inspection requires PNL 235 2 PANEL 235 equipment to be out of service DC DISTRIBUTION PNL 253 2 PANEL 253 Protected equipment - no access DISTRIBUTION PANEL Internal inspection requires PNL 2EM 2 2EM equipment to be out of service 21 FCU DISCH TO CNTMT DOME CD-SV-33389 2 34080 SV In containment - requires outage U2 TRN A CHLD SV-37464 2 WTR/CLG WTR ISOL SV Protected equipment - no access UNIT 2 TRAIN A CHILL SV-37466 2 WTR/CLG WTR ISOL SV In containment - requires outage D-3

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS'I WIT' 11IOLD FROM PUBL~eIC ICLOZURE 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 Peer Review 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 2 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 2 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 Sianature Date: November 15. 2012 E-1

Prairie Island Nuclear Generating Plant - Unit 2 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 2 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 2 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 2. 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 contained in this peer review report. Interviews were conducted by Messrs. Bacon and Eire with the SWE inspection team after review of a sample of the Unit 2 Seismic Walkdown Checklists (SWCs) and the E-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Area Walk-by Checklists (AWCs) to ascertain procedural compliance with the Seismic Walkdown Guidance (SWG) (Reference 1). The interviews were conducted by Mr. Bacon with Messrs. 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 this peer review report. No issues were identified which challenged the current licensing basis. E-3

Prairie Island Nuclear Generating Plant - Unit 2 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 2. 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 o Various environments o Equipment enhanced based on the findings of the IPEEE E-4

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report o Risk insight consideration The SWEL peer review commented that no Safety Injection (SI) or Component Cooling (CC) equipment items 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: 9 Equipment ID 245-122, the 22 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-5

Prairie Island Nuclear Generating Plant - Unit 2 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 18% of the SWCs and 22% of the AWCs. Table E-1: SWC and AWC Sam les from Seismic Walkdown Inspection for Unit 2 Equipment Equipment Class Walkdown Item Observations Identification 2LT-762 18 - Instruments U2 RVLIS Head Full on Racks Range Train B D/P No concern Transmitter 2PT-469 18 - Instruments 21 Steam Generator Main No concern on Racks Steam Header (CHNL II-WHI) P Transmitter 21 BATT 15 - Batteries on 21 Battery (& Battery No concern Racks Rack) 21 - Tanks and 217-111 21 MD AFW Pump /O No concern Heat Exchangers CLR Fluorescent light west of TD AFW pump has open S-hook on one chain; other 5 - Horizontal chain will prevent light 245-201 Pumps 22 TD AFW Pump from falling on the pump; CAP 1352001 initiated to evaluate this observation and WR 83556 initiated to address observation. 21 - Tanks and 253-401 D5 ENG 1 HT Expansion No concern Heat Exchangers Tank E-6

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table E-1: SWC and AWC Sam ples from Seismic Walkdown Inspection for Unit 2 Equipment Equipment Class Walkdown Item Observations Identification 20-50200 Instrumentation D5 Diesel Generator No concern and Control Panels Vertical Panel and Cabinets CV-31419 7 - Fluid Operated 22 TD AFW Pump No concern Valves RECIRC/L-O CLG CV CV-39413 7 - Fluid Operated 22/24 FCU Cooling Water No concern Valves Supply CV 20-D-2 Instrumentation and Control Panels Control Panel D-2 and Cabinets MTR 211 K-13 9 - Fans 21 D5 Diesel Generator No concern Building Return Fan 8 - Motor Operated MV-32148 and Solenoid 21 FCU Cooling Water No concern Operated Valves Outlet Isol. MV B 8 - Motor Operated MV-32248 and Solenoid 21/22 AFW To 21 SG No concern Operated Valves Isolation MV PNL 21 14 - Distribution Internals to be inspected Panels Distribution Panel 21 during outage. PNL 24 M 4 - Transformers No concern 234/XFMR Panel 234 Transformer E-7

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table E-1: SWC and AWC Sam les from Seismic Walkdown Inspection for Unit 2 Equipment Equipment Class Walkdown Item Observations Identification Status "N"- Upper left 3/8" diameter shell expansion anchor has sheared off; Plant engineering investigated this observation and determined that the fourth bolt is visible behind the spring-loaded nut holding PNL 261 14 - Distribution the panel enclosure to the Panels DC Distribution Panel 261 Unistrut; Panel 261 therefore has four mounting bolts connecting it to the concrete wall - no concern is present; CAP 1352221 initiated to document observation and WR 83615 initiated to perform field work required by CAP 1352221. RS-21-11 7 - Fluid Operated 21 SG Main Steam Header No concern Valves Relief E-8

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNG! WITHHOLD F,,,M PUBMLC DISCLOZUR.E Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 2 Area Walkdown Description Observations Light fixture to the side of the 22 charging pump has open S-hook; the light fixture will not fall in a seismic event, and will Aux. Bldg. 22 CHRG Pump not impact any equipment even if it did fall; CAP 1352001 initiated to evaluate open S-hooks, and WR 83556 initiated to address observation. Status "N" - Open S-hooks are on lighting fixtures throughout the area; light fixture near charging pump 71117 and 71119 is an interaction hazard if cabinet contains sensitive devices; Aux. Bldg. Northwest another open S-hook on light fixture is above MCC 2K Bus 1 and above Miscellaneous Systems 21 Relay Rack; CAP 1352001 initiated to evaluate open "S" hooks on light fixtures, and WR 83556 initiated to address these observations. D5/D6 D5 Engine No concern Open "S" hooks are on lighting fixtures throughout the room; D5/D6 221/222 Bus they are not a seismic concern; CAP 1352001 initiated to evaluate the open "S"hooks and WR 83556 initiated to address this observation. D5/D6 D5 MECH No concern Status "N" - Starting air indicator PI-11979 for 22 diesel driven cooling water pump has a bracket with provisions for four screws; only two bolts attach the indicator to the concrete wall; CAP 1351936 initiated to evaluate this observation, and WR 83545 initiated to correct the condition. CAP 1352398 has been initiated to evaluate the safety classification of the starting air indicator since it may not meet the requirements of the plant's equipment classification procedure; PI-1 1979 is currently classified as non-safety related but it may need to be classified as safety related. Status "N" - Clamp of the conduit going into Panel 227 is loose; clamp bolt is loosely attached to the Unistrut location of Turb. 21 BATT the clamp, which is 6ft above the floor; CAP 1353370 initiated to evaluate observation and WR 83887 initiated to address observation. E-9

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS' WITHHOLD FROM P*,UBLIC DICLOSUR.E Table E-1: SWC and AWC Samples from Seismic Walkdown Inspection for Unit 2 Area Walkdown Description I Observations Status "N" - 123 instrument air compressor guard is missing a few anchors; CAP 1352154 has been initiated to document this observation and WR 83594 has also been initiated to address condition. Fire extinguisher 301 is on a short bent bracket. It is recommended that the bracket gets bent back to normal (horizontal) position or is replaced. CAP 1352094 has been initiated to document this observation and WR 83577 has been initiated to address the bracket. Open S-hooks were identified on the following fluorescent lighting fixtures: a) west of the turbine driven auxiliary feedwater pump, b) above door 42, c) above the 12 motor driven auxiliary feedwater pump (only 1 chain), and d) above 124 AC; CAP 1352001 has been initiated to evaluate the open S-hooks and WR 83556 initiated Turb. 22 AFWP to address observation. The 1-1/2" fire protection sprinkler lines are flexible and threaded so they could be a potential spray hazard if they are filled with water. The lines are over the motor driven and turbine drive auxiliary feedwater pumps. Site engineering has reviewed this observation and concluded there is no seismic concern. Site engineering has concluded there is no seismic concern for the following observations: 1) The chain fall near TB2395 could potentially impact tubing on concrete wall; it is recommended that this chain be restrained, and 2) a fire protection break glass hammer is adjacent to the 123 air compressor control panel 70557; the hammer could potentially impact the nearby air tubing. ITEM 8 CHECKED "N" - to be revised per he Interview call on 10/23. E-10

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report 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 2 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 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-11

Prairie Island Nuclear Generating Plant - Unit 2 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 2 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-12

Prairie Island Nuclear Generating Plant - Unit 2 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-13

Prairie Island Nuclear Generating Plant - Unit 2 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 Thispeer review checklist may be used to document the review of the Seismic Walkdown Equipment List (S V"EL) in accordance with Section 6 Peer Review. The space below each question in this checklist should be u*ed to describe any findings identified during the peer review process and how the SWEL may have changed to address those findings. Additional space is provided at the end of this checklist for documenting other comments.

1. Were the five safety functions adequately represented in the SWEL I selection? Y[D 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. l*oesSWEL I include an appropriate representation of items having the following sample selection atributes:

a. Various types of systems? YZ 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. Unit Init2-Z*Equip. U-#E6p System ~ ~FitlAv in #Equip !0* AF AUXILIARY FEEDWATER 7 8 AT AUX START-UP/STDBY 0 0 XFMRS BM SITE MISCELLANEOUS 3 3 MAINTENANCE CC COMPONENT COOLING 1 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-14

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Sheet 2 of 5 Peer Review Checklist for SWEL #1 -Prairie Island Units 1 and 2 PiU rULLUL, U I FW FEEDWATER 0 0 INSTRUMENT SOURCES POWER 4 4 MP MISC PLANT INSTRUMENTS 1 0 MS MAIN STEAM 2 3 NI NUCLEAR INSTRUMENTATION 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 & INSTRUMENT 1 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 COOLING & AUX BLDG 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 11 and 12 Battery Chargers.

E-15

Prairie Island Nuclear Generating Plant - Unit 2 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? YE NEI 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 air compressors (Equipment Class 12) included on SWELl.

2) Will the Battery Room (1I, 12, 21 & 22 BATT) 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-16

Prairie Island Nuclear Generating Plant - Unit 2 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? YD NEI 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? YZ NO 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 I ? YZ NO 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 YO NEI in SWEL 2?

There are SFP related equipment included in SWEL 2, therefore no justification is required. E-17

Prairie Island Nuclear Generating Plant - Unit 2 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.

None YVzJ NIZ

5. Have all peer review commrents been adequately addressed in the final SWEL?

Pee.r Reviewe

1: , Seilh ,,(o0-#) Date: IC> -- Z- '1.--

Peer Reviewer Dote: s - -- " E-18

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNG! WITHHOLD rOM ,UBLIC DI"'LOGU'E' 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 SWCs 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 2 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown Question Observation Disposition Checklist No. The side panel is attached with a sufficient amount of There are missing cap nuts on the south side of the fasteners to prevent it from coming loose, so it is not a seismic 55320 11 cabinet. This is a maintenance issue and not a concern. However, CAP 1356613 has been initiated to seismic issue. evaluate this observation. In addition, WR 84674 was initiated to address this observation. The "S"hooks for lighting fixtures throughout the room are mostly closed, but not all of the way. The CAP 1352001 has been initiated to evaluate the open "S" chain links are thin enough to possibly slip through. hooks on light fixtures which have been identified during these SWEs recommend that the "S" hooks be fully closed, walkdowns. In addition to this action request, WR 83556 has even though none of them are over the batteries been initiated to address these observations. themselves. CAP 1352001 has been initiated to evaluate the open "S" 22 BATT- There are open "S" hooks for lighting fixtures above hooks on light fixtures which have been identified during these CHG the battery charger. walkdowns. In addition to this action request, WR 83556 has been initiated to address these observations. There are openTher "S" hooks

                                        "' ar opn for some hoksfor   omeof  of the he lighting ighing           It is nottoaevaluate initiated        seismic concern,    but CAP the "S" hook        1352001noted observations has been during 221 M/XFMR    8      fixtures, but this will not pose an  interaction   hazard          te   w     alkdw     e   of tff  CAP   1352001,  WR  85hbn tothese           to       te     trnsfomerinitiated.walkdowns. Off of CAP 1352001, WR 83556 has been F-2

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown Question Observation Disposition Checklist No. The guard between the engine and generator is bolted to the engine. No additional fasteners are required. It would not be 234-032 11 The guard between the engine and the generator is advisable to have the guard secured at both the engine and not anchored to the floor, the pad as the vibration from the engine when running would put undue stress on the guard fasteners. It is not a seismic concern. CAP 1352001 has been initiated to evaluate all of the open There42 8 willnotimpare two open bksen the lt fixe iIot "S" hooks identified during these walkdowns. In addition to the zone of influencen writing this action request, WR 83556 has been initiated to address these observations. The light fixture above 21 safety injection pump has CAP 1352001 has been initiated to evaluate the open "S" two open "S"hooks. SWEs judged that it is credible, hooks on light fixtures which have been identified during these but is not significant and the safety injection pump is walkdowns. In addition to this action request, WR 83556 has not adversely affected. been initiated to address these observations. Both of the "S"hooks holding the light fixture above the 22 CC pumps are open. The power cord is CAP 1351916 has been initiated to evaluate this observation. 245-122 8 taped and seems to be able to support the light In addition to writing this action request, WR 83541 has been fixture. The light fixture is in contact with the column initiated to address this observation. 2 and it is possible the light may break during seismic motion. F-3

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown Question Observation Disposition Checklist No. Due to the fact that the CC pumps and heat exchangers are mounted on raised concrete pedestals, the proximity of a barrel to the pump has no adverse impact seismically. However, such poorly secured barrels are in conflict with the 245-122 8 The CC Pump collection barrel is tied with rope to requirements of the seismic housekeeping procedure and the references CAP 1317022 and WO 74792. engineering change for the CC pump leakoff collection barrels structural system. CAP 1351901 has been initiated to evaluate this observation, and WR 83539 has been generated to address this observation. There is duct tape on the bottom of the rigging beam 245-122 8 above the CC pump. It is a housekeeping issue, and CAP 1351913 has been initiated to evaluate this observation. not a seismic concern. Fluorescent light located west of TD AFW pump has CAP 1352001 has been initiated to evaluate this observation. 245-201 7 open "S" hook on one chain but the other chain will In addition to the action request, WR 83556 has been initiated prevent light from falling on the pump. to address this observation. The light bar is being held by two "S"hooks. One of the "S" hooks is open. If the light bar were to swing, CAP 1351884 has been initiated to evaluate this observation. 245-392 8 it might hit the pump. Although this potential seismic In addition to writing this action request, WR 83533 has been interaction might be credible, it is not significant initiated to address this observation. since the pump would still be able to perform its intended safety function. F-4

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown Question Observation Disposition Checklist No. The supply and return line are laterally unsupported, The piping configuration is seismically installed. The subject 274-031 11 and could potentially over stress the nozzle piping is analyzed in a plant calculation, and is shown to be (particularly the copper portion in the cooling acceptable. There is no seismic concern. radiator). A calculation was found which previously performed a determination of seismic adequacy of ZH system pressure 274-162 9 Supply and return lines are laterally u es end boundary in the 122 Bus Room and other locations within the may subject cooler nozzle to large movement, plant. No additional review is required based on the identified plant documentation. There is no seismic concern. A light fixture has three open "S" hooks. The SWE's CAP 1352001 has been initiated to evaluate the open "S" 2LT-920 8 judged that the light fixture will not impact the hooks on light fixtures which have been identified during these transmitter, so there is no seismic interaction walkdowns. In addition to this action request, WR 83556 has concern, been initiated to address these observations. CAP 1351219 has been initiated to evaluate this observation. The cabinet caie labeled aee cenceiachemical handling "clean adig Site to theEngineering discovered wall with two later that small anchors, thecan which cabinet only is beanchored found by 2LT-921 10 equipment" (36" x 24" x 75" high) is stored about 4" o the cabit andhovin in a con o se them. from the level transmitter. opening the cabinet and moving internal contents to see them. Therefore this observation is resolved and there is no adverse seismic condition. CAP 1352954 has been initiated to document this observation. B-2 Comments Duct tape was identified behind Panel E-2 at about AdionlyWR875hsbeiitadtormvte 8' high between the CVCS letdown and RHR labels. Additionally, WR 83785 has been initiated to remove the foreign material. F-5

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown Question Observation Disposition Checklist No. There is a bent back cover plate for the CVCS letdown monitor. It is located at about 10' high near It is not a seismic concern, however, WR 84959 was initiated the CVCS letdown label. The cover plate is non- to correct the bent dust cover on the enunciators. structural and is not an adverse seismic condition. The light fixture near E-2 in the middle section has CAP 1352001 has been initiated to evaluate the open "S" one open "S" hook out of four hooks. E-2 is not in inflhooouetrfoure i. i oneofen anot seisc s hooks on light fixtures which have been identified during these E-2 8 the zone owalkdowns. In addition to this action request, WR 83556 has concern. This light fixture was noted during the area been initiated to address these observations. walkbys. The SWEs identified the following foreign materials:

1. Duct tape was found on the side of the first monitor, about 8' high on the generator controls. CAP 1352954 has been initiated to evaluate this observation.

E-2 Comments 2. A broken tie wrap is inside E-2 and pinned to a Additionally, WR 83785 has been initiated to remove the diagonal support. foreign material.

3. A tie wrap was found on the edge of a HVAC duct exhaust above E-2.

In addition to the foreign material, the pig tail of a TheabnoecblsThrfeCP1529asen abandoned cable was not configured per the guidance for cable Commentso wabandoned cables. Therefore, CAP 1357129 has been E-2 Comments top of the box. It is not a seismic concern, but it is initiated to document this observation. In addition, WR 84837 was initiated to address this observation. There is no impact recommended that the site evaluate the condition.is not a seismic concern. F-6

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown Question Observation Disposition Checklist No. The unit remains functional with only one screw holding the card in. The one screw will ensure it does not impact other EM-B2 A mounting screw was discovered missing inside the equipment as well. The card does not support any safety back of this panel in one of the electronic modules. functions, therefore it is not a seismic concern. However, CAP 1353340 was initiated to document this observation, and WR 83890 was generated to correct the condition. Based on engineering judgment the small mass on the control The train B event monitoring unit cooler CS-19144 switch box is adequately supported by the two anchor EM-B2 Comments PNL 219-1 has four bolt holes in the base plate but configuration. It is also obvious from the multiple installations only two screws are installed, that this is the as designed configuration and there has been no degradation. It is not a seismic concern. The pipe support trapeze for the rod support of the A rigid seismic restraint prevents the rod hanger and MV-32030 turbine driven auxiliary feedwater pump discharge connected steel trapeze support from moving and impacting line may displace (out of the plane of the trapeze) the motor valve. It is not a seismic concern. and potentially strike MV-32030. There is an open "S" hook on the light fixture above h CAP 1352001 has been initiated to evaluate the open "S" MV-32180 8 MV-32180. It is credible, but will not impact MV- hooks on light fixtures which have been identified during these walkdowns. In addition to this action request, WR 83556 has 32180. been initiated to address these observations. The conduit rod stirrup below the valve is missing CAP 1356520 has been initiated to evaluate this observation. MV-32384 Comments one bolt. This is not a seismic issue for the valve, In addition, WR 84626 was initiated to address this but requires evaluation, observation. F-7

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-i: Disposition of Seismic Walkdown Observations Walkdown Cheklist Question No. Observation Disposition Checklist No. The A-46 SEWs declared this panel as an outlier This was identified as an outlier for resolution during the PNL 22 6 and required a grout pad so that the bolts would not SQUG walkdowns and was evaluated. The condition was be subject to bending. The recommended resolution determined to be acceptable. It is not a seismic concern. does not appear to have been performed. CAP 1352343 has been initiated to evaluate this observation. PNL 22 The counterweight of the door pulley system may WR 83645 and 83646 have also been initiated to address this 2strike panel PNL 22. observation. Both of the "S"hooks for the light fixture in front of CAP 1352001 has been initiated to evaluate the open "S" PNL 234 8 panel 234 are open. The light fixture will not impact hooks on light fixtures which have been identified during these the panel as it is 4' away from the panel. It is not a walkdowns. In addition to this action request, WR 83556 has seismic concern, been initiated to address these observations. The "S hooks" at both ends of a light fixture near PNL-234/XFMR are open. If light fixture unhooks at CAP 1352001 has been initiated to evaluate the open "S" PNL both ends, its power cord will hold the fixture at one hooks on light fixtures which have been identified during these 8end, and the other end will swing down. Panel 234 walkdowns. In addition to this action request, WR 83556 has 234/XFMR and the transformers are not in zone of influences so been initiated to address these observations. SWEs judge light fixture falling is not an adverse seismic condition. Plant engineering investigated this observation and determined that the fourth bolt is visible behind the spring-The upper left 3/8" diameter shell expansion anchor loaded nut holding the panel enclosure to the Unistrut. Panel PNL 261 2 has sheared off. 261 therefore has four mounting bolts connecting it to the concrete wall, and no concern is present. CAP 1352221 was initiated to document this observation. WR 83615 was also initiated to perform any field work required by CAP 1352221. F-8

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUN*! WIT'--,LD FROM PU"...i D.C.,UP-E 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-19543 is part of an active engineering change. As a result, the switch has not been classified, 11/21 CC Itappears that CS-1 9543 is not anchored to the wall. and the system is not yet turned over to Operations. Additionally, the PUMP There are four external holes in the bracket for fasteners SWEs judge that the length of rigid conduit currently holding CS-but no fasteners are present. 19543 in place is an 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 heat CAP 01353280 has been initiated to evaluate this observation. In AUX 11/21 CC exchanger to collect leak off. The drums are poorly tied addition to writing the action request, WR 83853 has been initiated to PUMP off by rope to a small copper drain line for the 11 address the observation. component cooling pump unit cooler. One of the two floor brackets for the Unistrut that supports CAP 1353327 has been initiated to evaluate this observation. In AUX 11/21 CC 8 the component cooling motor power cables appears to be addition to writing the action request, WR 83865 has been initiated to PUMP bent and the anchor is loose. There is a tygon tube address the observation. wedged under the corner. 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 rigging I-beam AUX 12/22 CC 4 on one side of 4 component cooling lines on the other The unit cooler is not safety related, so there is no seismic concern. PUMP side. The hanger number is 2-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. F-9

Prairie Island Nuclear Generating Plant - Unit 2

                                        *m   m*lAm Seismic Walkdown Submittal Report
                                        ..,urI            IIIM W11-HJL           IlIUM IUMLMiLULLRI1 Table F-2: Disposition of Area Walk-by Observations Area Walk by  Question                           Observation                                                              Disposition Checklist     No.

A top cover plate wing nut is missing from the 2RE-39 AUX 12/22 CC radiation monitor. There is also a loose screw on the side The radiation monitor is not safety related. WR 83571 was initiated to PUMP Comments door cover. The monitor is resting on the floor near the replace the wing nut and tighten the loose screw. CAP 01352076 was wall, and is located between the 22 component cooling initiated to document the observation. pump and the stairs to the upper level. CAP 1352923 has been initiated to document the observation, and AUX 21/22 Next to the pressure gauge PI-18249, there is a portable WR 83779 has been initiated to either secure the portable cord reel CNTM SPRAY 4 cord reel supported on the wall by a pin. Since the cord is from movement or re-locate the portable cord reel to a more suitable free to rotate, the reel could swing in a seismic event and location. potentially impact the valve and tubing of the pressure gauge. Radiation monitor DRM-2 is attached magnetically to CAP 1352769 has been initiated to evaluate long term out of service AUX 21/22 electrical panel 2RIA54. The magnetic base may not be time for the radiation monitor. CAP 1352792 has also been initiated to CNTM SPRAY 7 strong enough impacting to prevent the pressure the monitor gauge from P1-1 8249 falling and or associated evaluate any potential procedure portable deficiencies radiation monitors. in the installation of tubing. The guard cover on 22 safety injection (SI) pump coupling has two loose nuts for th has fo wo the bracket oos brcke nus attached totheCAP attche to the 1352699 had been initiated to evaluate this observation. In AUX 21/22 SI foundation of the SI pump. The bolts are effective to CA1329habenitaedoevltehsosrain.I 21 wfi t addition to writing this action request, WR 83742 has been initiated to PUMP withstand seismic loads. The coupling guard will remain in place during a seismic event. It is seismically acceptable, re-tighten the bolts. but the loose bolts should be tightened. F-10

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. There is no requirement for the attachment of flow meters. The flow meter uses the metal chain to keep it affixed to the pipe. The chain is An ultrasonic flow meter is chained to a pipe near 2SI robust and is sufficient for supporting the weight of the meter. In a 2 PUMP 68. The pipe may not be capable of supporting this seismic event the meter would move with the pipe and no extra load seismic load. would be exerted on the chain. The seismic loads for the piping were evaluated within a plant evaluation. The configuration is acceptable, and is not a seismic concern. AUX 21/22 SI An oil can is sitting on the pipe support for MV-32185. CAP 1352727 has been initiated to evaluate this observation. Off of PUMP 7 There wasthe nosite's holderseismic found for storing the can, which is this action request, WR 83746 was initiated to address the condition. against housekeeping procedure. AUX 21/22 SI A steam heating line was found tie wrapped to the line that CAP 1352959 has been initiated to evaluate this observation. In PUMP 8 includes the 2-RCCH-538 housekeeping practice,support. The tie and should be wrap is a poor removed. addition, WR 83786 has been initiated to address the condition. The light fixture to the side of the 22 charging pump has AUX 22 CHRG an open "S" hook. The light fixture will not fall in a seismic CAP 1352001 has been initiated to evaluate the open "S"hooks PMP 4 event, and will not impact any equipment even if it did fall. identified during these walkdowns. In addition to writing this action The 22 charging pump is not in the zone of influence of request, WR 83556 has been initiated to address this observation. the light fixture. There are open "S"hooks for lighting fixtures throughout the area. Light fixture near charging pump 71117 and CAP 1352001 has been initiated to evaluate the open "S"hooks on 71119 is an interaction hazard if cabinet contains sensitive light fixtures which have been identified during these walkdowns. In devices. Another open "S"hook on light fixture is above addition to this action request, WR 83556 has been initiated to MCC 2K Bus 1 and above Miscellaneous Systems 21 address these observations. Relay Rack. F-11

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS'- WIT-1OR1 I H,iR I rUII ISCL9*El, li Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. There are open "S"hooks at both ends at the top of the CAP 1352001 has been initiated to evaluate the open "S"hooks AUX Northwest 3 light fixture above MOO 2L BUS 1. identified during these walkdowns. WR 83556 has also been initiated to address this observation. There is a black barrel collecting leak off from drain line The barrel meets the requirements of the seismic housekeeping 2ZX-1-19 located under the staircase and next to MCC 2L procedure for temporary storage of barrels. The barrel is greater than BUS 1. The barrel is loosely tied off with rope to the 1.25 times its height from the MCC, and it is tied off to preclude Unistrut supporting panel 2R1A57. movement during a seismic event. No seismic concern exists. Molded case circuit breakers are generically considered to be non-vulnerable to contact chatter because of the significant seismic forces The light fixture hanging from the ceiling is about 3" to 6" required to spuriously operate these devices. Any force imparted by AUX B E-MON from an electrical box that is connected to panel 219. the light fixture falling on the panel would be less significant than the During a seismic event the fixture may hit the electrical seismic motion of the panel itself. As the panel and breakers are box. 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. Ifthe unit cooler supply and return lines break during a This condition was previously evaluated in a plant calculation which seismic event, it may result in flooding the room. There is performed a determination of seismic adequacy of ZH system AUX B E-MON 5 no floor drain in the train B event monitoring room. pressure boundary in the Event Monitoring Rooms and other locations Reference hangers 2-RHRH-453, 2-RHRH-448, 2-RHRH- within the plant. No additional review is required based on the 449, and 2-RHRH-454. identified plant documentation. There is no seismic concern. There are open "S"hooks on the fluorescent lights in CAP 1352001 has been initiated to evaluate the open "S"hooks AUX NORTH numerous locations. However, none of the fixtures are identified during these walkdowns. In addition to writing this action WEST above safety related equipment. There is no seismic request, WR 83556 has been initiated to address this observation. concern. The wrench hanging from 2MS-27-2 is a potential hazard CAP 1352195 has been initiated to evaluate this observation. In AUX NORTH 7 to SOV-33266 and SV-33264. The recommendation is to addition to writing the action request, WR 83607 has also been WEST re-locate the wrench to a height lower than the SOV initiated to address this condition. elevation, so that it is no longer a potential hazard. F-12

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SU*SIi -' ITI IIIO FTeM PU r101=- iL,.ZLO.l, E Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. AUX NORTH The chain fall located near LFT-495 should be restrained WEST 7 so that it doesn't have the potential to impact the CAP 1352586 has been initiated to evaluate this observation. WR transmitter. 83723 has also been initiated to address this condition. The tube lines near LFT-495 could potentially impact the These flow transmitters are not safety related and are not required to AUX NORTH 8 transmitter It is recommended that these lines be be seismically designed per the plant licensing basis. Therefore, there WEST restrained, is no impact to plant safety as a result of a seismic interaction with the transmitter.

                                          "S"hooks for lighting fixtures throughout         CAP 1352001 has been initiated to evaluate the open "S"hooks DS/D6 221/222    4US 4          thearereopen They are notlismic There                             a           conern.             identified during these walkdowns. In addition to writing this action BUS                        the room. They are not a seismic concern.                  request, WR 83556 has been initiated to address this observation.

The cabinets are non-safety related. The cabinets are considered D5/D6 D5 There is a trash receptacle between cabinets D5-RTV- seismically mounted, because they are in the area of other safety CONTROL cabinet and remote terminal unit D5. related equipment. The condition described is acceptable, as there is no impact to equipment. The fire protection piping rod hung sprinkler system has This system is a pre-action system. The piping is filled with D5/D6 D6 5 threaded connections and could pose a flooding hazard if compressed air and it requires a "preceding" fire detection event (heat this piping failed during a seismic event, or flame) in order to introduce water into the piping. This piping is not a seismic concern. CAP 1352001 has been initiated to evaluate the open "S"hooks D5/D6 26 BUS 4There are openadjacent

                                           "" hooks to on  light fixtures breaker   26.      above and       identified request, WRduring these 83556  haswalkdowns. In addition been initiated          to writing to address         this action this observation.

F-13

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS' WIT'HHIOLD FROM 'U.Li. DISCLOSURE Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. CAP 1351936 has been initiated to evaluate this observation, and WR 83545 was initiated off of this action request to correct the condition. The starting air indicator (PI-11979) for the 22 diesel SSCN 22 DD driven cooling water pump has a bracket with provisions After further evaluation by plant engineering, it was determined that CLWP I for four screws. However, only two screws are attaching the safety classification of this indicator may not meet the the indicator to the concrete wall. requirements of the plant's equipment classification procedure. PI-11979 is currently classified as non-safety related but it may need to be classified as safety related. CAP 1352398 has been initiated to evaluate the safety classification of the starting air indicator. TURB 21 AFWP 1 The guard to bolt drive on 121 instrument air (013-011) is CAP 1352975 has been initiated to evaluate this observation. missing two anchor bolts. Additionally, WR 83793 has been initiated to address the condition. swithin eight inches of interacting CAP 1352961 has been initiated to address this observation. In TURB 21TURB AFWP AFWP21 4 withMChain all for 2AF-13-1 o estracin

                       ~~with MCC 1A Bus 1. The chain tall needs to be restrained,.drs       addition  to writing an action request,   WR 83796 has been initiated to hscniin address this condition.

The clamp of the conduit going into Panel 227 is loose. CAP 1353370 has been initiated to evaluate this observation. TURB 21 BATT 3 The clamp bolt is loosely attached to the Unistrut location Additionally, WR 83887 has been initiated to address this observation. of the clamp, which is 6ft above the floor. TURB 22AFWP 2 The 123 instrument air compressor guard is missing a few CAP 1352154 has been initiated to document this observation. WR anchors. 83594 has also been initiated to address this condition. The fire extinguisher (301) is on a short bent bracket. It is CAP 1352094 has been initiated to document this observation. From TURB 22 AFWP 4 recommended that the bracket gets bent back to normal this action request, WR 83577 has been initiated to address the (horizontal) position or is replaced. bracket. F-14

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. Open "S"hooks were identified on the following fluorescent lighting fixtures:

a. west of the turbine driven auxiliary feedwater pump CAP 1352001 has been initiated to evaluate the open "S"hooks TURB 22 AFWP 4 b. above door 42 identified during these walkdowns. In addition to writing this action

c. above the 12 motor driven auxiliary feedwater pump request, WR 83556 has been initiated to address this observation.

(only 1 chain)

d. above 124 AC The 1-1/2" fire protection sprinkler lines are flexible and The horizontal sprinkler head piping is supported with clips to a TURB22AFWP 5 threaded so they could be a potential spray hazard if they Unistrut or other large-diameter piping. The vertical supply lines to the are filled with water. The lines are over the motor driven sprinklers are of the pendant style (hang down from above), and are and turbine driven auxiliary feedwater pumps. considered seismically robust. They are not a seismic concern.

An earthquake significantly beyond the plant's design basis The chain fall near TB2395 could potentially impact tubing earthquake would be required to swing the chain into the stainless TURB 22 AFWP 7 on concrete wall. It is recommended that this chain be steel tubing. Ifa beyond design basis earthquake did occur, the loss restrained, of this tubing would not negatively affect plant safety. Therefore, it is not a seismic concern. The gravitational force from the hammer would not be large enough to A fireairprotection break hammer glasspanel is adjacent to the damage the tubing to the point where it could no longer feed CV-TURB 22AFWP 7123 compressor control 70557. The hammer 31191, the 123 Station Air Compressor Unloader. Additionally, both of T7comldprtessorlly impacntrolhnel 70557. theing hthese valves are non-safety related. The loss of these valves in a could potentially impact the nearby air tubing. design basis earthquake would not negatively affect plant safety. It is not a seismic concern. Some of the "S"hooks for lighting fixtures in the area are CAP 1352001 has been initiated to evaluate the open "S"hooks TURB 22 BATT 4 not completely closed. None of the lighting fixtures with identified during these walkdowns. In addition to writing this action open "S"hooks are over the batteries, request, WR 83556 has been initiated to address this observation. F-15

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS' W!IT-HHL6 I FIIIIM PUL3IC DISG*I URIE Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. Door 228 counterweight is next to Panel 22. Because of the low peak vertical acceleration at the site, there is no reason to suspect that the "S"hooks could become unloaded to allow the weight to disengage. TURB 22 BATT 4Th counterweight Sdhtok iealsoo opnagindsthe However, CAP 1352343 was initiated to address the open "S"hook. counterweight could fall to the floor or against PNL 22. In addition to writing this action request, WR 83645 and WR 83646 were initiated to upgrade the remaining doors so that they are connected to a pull cable with a threaded carabineer. Eyewash station is securely stationed to the wall. Plant engineering reviewed the restraint for the water supply to the TURB 22 BATT 4 However, the water supply canister on the cart is secured eyewash station and concluded that the bungee cord was an by a bungee cord which may not be an adequate restraint, acceptable means of restraining the canister. Duct tape is preventing a chain for a fluorescent light TURB BUS 121 4 fixture from making contact with a conduit. This type of CAP 1352191 has been initiated to evaluate this observation. restraint is not necessary and should be removed. It is a Additionally, WR 83605 has been initiated to correct the condition. housekeeping issue and not a seismic concern. Supply and return lines for the 121 switchgear room unit Plant engineering has evaluated this observation and concluded that TURB BUS 121 5 cooler are unsupported laterally across the room, and may the piping is seismically installed. The subject piping is analyzed in a not be adequately restrained to prevent excessive nozzle pipng callytinstald The sube a naled loads on the unit cooler, plant calculation, and is shown to be acceptable. Plant engineering has evaluated this observation and noted that as The cables going into relay racks 2AMR1,2ARP1, 2ARP2, the cables exit the rack, they are bundled and secured to the cable 2ARP3, 2ARP4, and 2ASG2 are each two feet long. They tray supports prior to entering the tray. Cables of this type are allowed TURB RELAY 3 are tied to a single Unistrut with tie wraps. The Unistrut to have significantly longer unsupported vertical runs, according to site may not be adequate to support the load from the cables, procedure. The grouping and securing of these cables to the supports on top of the cable tray load it is already supporting. with tie wraps is a cosmetic function only. The installation is in accordance with site procedures and is acceptable. F-1 6

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. Ther lage ar seera oll of banone cale hatare Plant engineering evaluated the installation of these abandoned cables and determined that the cables are marked and coiled in TURB RELAY Comments tied together with cable ties to Unistrut. These abandoned cane wit sitergine for an cables and conduit MCae2MRIand cabls nar B-228.accordance with site guidance for abandoned cables and conduits. It is not a seismic or housekeeping concern. A calculation was found which previously performed a determination TURB TRN B Supply and return lines are laterally unrestrained and may of seismic adequacy of ZH system pressure boundary in the 122 Bus TURBTTRN B Suply jectuolnes aze tolatery uresnedand. m Room and other locations within the plant. No additional review is EVENT MON subject cooler nozzle to large movement. required based on the identified plant documentation. There is no seismic concern. AUX CONTROL There are lighting diffusers tied off to the support grid. ROOM 4 Unit 1 and Unit 2 "C" panels have a fluorescent light fixture CAP 01352209 has been initiated to evaluate this observation. on chains too close (within 1"-2") to the panel. The trash can next to the racks R23, R24, R13, and R14 The trash cans are located next to non-safety related miscellaneous ROOM 7 are immediately adjacent to the racks, which violates the racks. This condition is acceptable per site procedure guidance. seismic housekeeping procedure. There is no seismic concern. AUX CONTROL There were several open S-hooks on light fixtures (nearest CAP 01352001 was initiated to evaluate this observation. Off of CAP ROOM the panel in most cases). 01352001, WR 83556 was initiated to address this observation. The trash cans are located next to non-safety related miscellaneous AUX CONTROL Step ladder adjacent to racks R23, R24, R13 and R14 is racks. There is no impact to the equipment. However, all wheeled ROOM also too close to the chocked. racks. The wheels should be carts should be chocked. The FIN team has been notified to chock the wheels. F-17

Prairie Island Nuclear Generating Plant - Unit 2 Seismic Walkdown Submittal Report SUNS1! WITHHOL FROM PB LIC DISCLOSUR Table F-2: Disposition of Area Walk-by Observations Area Walk by Question Observation Disposition Checklist No. AUX CONTROL Unit 1 and Unit 2 "E"panels have side panels that have CAP 01352102 has been initiated to evaluate this observation. In ROOM 8 slid out of position. This is a housekeeping issue and not addition to writing an action request, WR 83579 has been initiated to a seismic concern, address this observation. AUX CONTROL Comments Fire extinguisher bracket 224 has a rotated bracket (into The fire extinguisher is not located near equipment that could be impacted if the fire extinguisher came free from its mounting bracket. ROOM the insulation) and should be repaired. WR 83584 was written to replace the mounting bracket. This condition does not meet the seismic housekeeping procedures; AUX CONTROL Comments The filing cabinets adjacent to the main control board in therefore CAP 1357683 has been initiated to evaluate this ROOM both Unit 1 and Unit 2 are close to the main control board. osrain hr sn des esi ocrs observation. There is no adverse seismic concerns. The drawers have a small mass and are located on the floor of the AUX CONTROL A set of drawers next to the in-core logic selection switch control room. The aspect ratio was determined to be greater than two AU M Cand it will not slide across the carpeted floor. Ifthe drawers did slide ROOM panel are close to the panel. out in a seismic event, they would not impact any equipment. Therefore, there is no seismic concern. The cart adjacent to the Protection System Illsupports 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 of the monitor slightly exceeds the The cart adjacent to the Protection Systems III and the aspect ratio defined per the seismic housekeeping procedure. CAP AUX CONTROL Comments cart adjacent to cabinets RPI-1, -2, and -3 in Unit 1 are 1357686 was initiated to address the observation. The cart will not ROOM close to the equipment. The chain is not used to restrain affect equipment in the area. the carts. As for the cart adjacent to RPI-1, -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. F-18}}

L-PI-12-109, 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 Fukishima Dai-ichi Accident

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1.1 BACKGROUND

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L-PI-12-109, 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 Fukishima Dai-ichi Accident

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References:

1.1 BACKGROUND

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