DCL-12-118, Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.3 Seismic Unit 1. Part 1 of 2: Difference between revisions

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{{#Wiki_filter:Pacific Gas and ElectricCo~pany Edward D. Halpin                              Diablo Canyon Power Plant Senior Vice President                          Mail Code 104/6 Nuclea r Generation & Chief Nuclea r Officer  P. O. Box 56 Avila Beach, CA 93424 805.545.4100 November 27,2012                                                                                            E*Mail: E1H8@pge.com PG&E Letter DCL-12-118 u.s. Nuclear Regulatory Commission                                                  10 CFR 50.54(f)
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ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852 Docket No. 50-275, OL-DPR-80 Diablo Canyon Power Plant Unit 1 Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.3 Seismic Unit 1
 
==References:==
: 1. NRC Letter, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident", dated March 12,2012
: 2. NRC Letter, "Endorsement of Electric Power Research Institute (EPRI) Draft Report 1025286, 'Seismic Walkdown Guidance"', dated May 31,2012
: 3. PG&E Letter DCL-12-065, "Pacific Gas and Electric Company's 120-Day 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 Insights from the Fukushima Dai-Ichi Accident", dated July 10,2012
 
==Dear Commissioners and Staff:==
 
On March 12, 2012, the Nuclear Regulatory Commission (NRC) issued Reference 1 to Pacific Gas and Electric Company (PG&E). Enclosure 3 of Reference 1 contains the requested information and required responses associated with Recommendation 2.3 Seismic.
In Reference 1, the NRC requested that each addressee confirm that it will use the industry-developed NRC-endorsed seismic walkdown procedures. Reference 2 documents the NRC's endorsement of EPRI 1025286. In Reference 3, PG&E confirmed that it would use EPRI 1025286, as endorsed by Reference 2, as the basis for the seismic walkdowns at the Diablo Canyon Power Plant (DCPP).
A  member  of  the  STARS  (Strategic  Teaming    and    Resource    Sharing)      Alliance Callaway
* Comanche Peak
* Diablo Canyon
* Palo Verde
* San Onofre
* South Texas Project
* Wolf Creek
 
m I
Document Control Desk November 27, 2012
  & Page 2 PG&E Letter DCL-12-118 Enclosure 3 of Reference 1 states that within 180 days of the NRC's endorsement of the walkdown process, each addressee will submit its final response for the requested information. Enclosure 3 of Reference 1 also states that the response should include a list of any areas that are unable to be inspected due to inaccessibility and a schedule for when the walkdown will be completed.
Enclosure 1 of this letter provides PG&E's response to Recommendation 2.3 Seismic for DCPP Unit 1 accessible components. PG&E will submit an updated response after inspection of currently inaccessible items.
PG&E is making regulatory commitments (as defined by NEI 99-04) in Enclosure 2 of this letter. This letter includes no revisions to existing regulatory commitments.
If you have any questions, or require additional information, please contact Mr. Terence L. Grebel at (805) 545-4160.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on November 27,2012.
Sincerely,
    /"~~--~
Edward D. Halpin Senior Vice President - Chief Nuclear Officer dmfn/SAPN 50465913 Enclosures cc:        Diablo Distribution cc/enc: Elmo E. Collins, NRC Region IV Eric J. Leeds, NRC Director, Office of Nuclear Reactor Regulation Laura H. Micewski, Acting NRC Senior Resident Inspector Joseph M. Sebrosky, NRR Project Manager A  member  of  the  STARS  (Strategic  Teaming  and  Resource  Sharing)  Alliance Callaway . Comanche Peak . Diablo Canyon
* Palo Verde . San Onofre . South Texas Project
* Wolf Creek
 
Acronyms used in this response are defined      Attachment L to this enclosure.
 
==
Introduction:==
 
On March 12,2012, the NRC issued letter, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review Of Insights from the Fukushima Dai-ichi Accident" (Reference 1). Enclosure 3 of Reference 1 contains a request for information related to the results of the seismic design basis walkdowns performed in accordance with NRC Letter, "Endorsement of Electric Power Research Institute (EPRI) Draft Report 1025286, 'Seismic Walkdown Guidance''', dated May 31,2012, (Reference 2).
 
==Purpose:==
Reference 1 requests that within 180 days of NRC's endorsement of thewalkdown procedure, each addressee will submit its final response for the requested information and that the response should include a list of any areas that are unable to be inspected due to inaccessibility and a schedule for when the walkdowns will be completed. This Enclosure contains PG&E's response for the requested information for Unit 1, which includes the results of the walkdowns performed and any further actions required. This response also includes a list of any components that PG&E was unable to inspect due to inaccessibility and a schedule for when PG&E will complete those walkdowns.
NRC Request:
: a.      Describe the plant-specific hazard licensing bases and a description of the protection and mitigation features considered in the licensing basis evaluation PG&E Response:
The seismic inputs applicable to the design of DCPP are described in the DCPP UFSAR, Sections 2.5 and 3.7. Since the development of the seismic inputs for DCPP predates the issuance of 10 CFR 100, Appendix A, "Seismic and Geologic Siting Criteria for Nuclear Power Plants," the following DCPP-specific earthquakes are defined:
Design Earthquake The design earthquake (0.2g) is defined as the maximum size earthquake that can be expected to occur at DCPP during the life of the reactor. The design earthquake is the equivalent of the operating basis earthquake, as described in 10 CFR 100, Appendix A.
 
Double Design Earthquake The double design earthquake (0.4g) is defined as the hypothetical earthquake that would produce accelerations twice those of the design earthquake.          double design earthquake is the equivalent of the safe shutdown earthquake, as described in 10 CFR 100, Appendix A.
Hosgri Earthquake The Hosgri earthquake (0.75g) is defined as the predicted ground motion at DCPP due to a Richter magnitude 7.5 earthquake on the offshore Hosgri fault. The Hosgri earthquake does not correspond to an operating basis earthquake or safe shutdown earthquake.
Long Term Seismic Program In addition to the above three earthquakes, PG&E implemented a program to reevaluate DCPP's seismic design, as described below. As part of the operating license issuance for DCPP Unit 1, the NRC imposed a license condition that required in part: "PG&E shall develop and implement a program to reevaluate the seismic design bases used for the DCPP".
PG&E's reevaluation effort in response to the license condition was titled the "Long Term Seismic Program." In June 1991, the NRC issued SSER 34, in which the NRC concluded that PG&E had satisfied the license condition described above. In SSER 34, the NRC requested certain confirmatory analyses from PG&E, and PG&E subsequently submitted the requested analyses. The NRC's final acceptance of the LTSP is documented in a letter to PG&E dated April 17, 1992.
Although the LTSP contains extensive databases and analyses that update the basic geologic and seismic information in the UFSAR, the LTSP material does not alter the design bases for DCPP. In SSER 34, the NRC states: "The Staff notes that the seismic qualification basis for Diablo Canyon will continue to be the original design basis plus the Hosgri evaluation basis, along with associated analytical methods, initial conditions, etc."
Classification of SSCs The classification system applicable to SSCs at DCPP is described in UFSAR, Section 3.2. Since the development of the classification system for DCPP predates Regulatory Guide 1.29, "Seismic Design Classification," DCPP does not use SC I terminology. Instead, DCPP uses the following classifications:
Design Class I: SSCs necessary to ensure: (a) the integrity of the reactor coolant pressure boundary, (b) the capability to shut down the reactor and maintain it in a safe
 
Enclosure 1 18 15 shutdown condition, or (c)      capability prevent or mitigate        consequences accidents that could result in potential offsite exposures comparable to the guideline exposures of 10 CFR 100 are classified as Design Class I. Design Class I SSCs are designed for the design earthquake, double design earthquake, and Hosgri earthquake.
Design Class I SSCs correspond to SC I SSCs, as defined in Regulatory Guide 1.29.
Design Class II: SSCs important to reactor operation but not essential to safe shutdown and isolation of the reactor, and failure of which would not result in the release of substantial amounts of radioactivity, are classified as Design Class II. In general, Design Class II SSCs correspond to non-SC I SSCs, as defined in Regulatory Guide 1.29. Some Design Class II SSCs are required for the operation of certain Design Class I features and are designed for the double design earthquake or the Hosgri earthquake.
Therefore, as discussed above, all Design Class I and selected Design Class II components that are designed for the double design earthquake or the Hosgri earthquake are scoped in as equivalent to SC I for the purpose of this evaluation.
Codes, Standards. and Methodology Given the above considerations regarding Design Class I and II equipment, some of the major codes and standards used include:
(1)    ANSI B31.1, "Power Piping" (1967 Edition up to and including 1973 Addenda)
(2)    ANSI B31.7, "Nuclear Power Piping" (1969 Edition with 1970 Addenda)
(3)    ACI-318-63, "Building Code Requirements for Reinforced Concrete (4)    AISC, "Specification for the Design, Fabrication, and Erection of Structural Steel for Buildings" (1969)
(5)    IEEE 344-1971, "IEEE Recommended Practices for Seismic Qualification of Class I Electric Equipment for Nuclear Power Generating Stations." Specific cases have been supplemented by seismic qualification criteria per IEEE 344-1975.
Additional codes and standards are identified in the UFSAR.
NRC-approved methodologies were used for design, construction and any modification of seismic-related SSCs at DCPP Unit 1. The various methodologies used for the SSCs are identified in the UFSAR.
: b.      Present information related to the implementation of the walkdown process
 
===Response===
Personnel Qualifications:
The development of the various teams of personnel for the          seismic walkdown effort was consistent with EPRI 1025286, Section 2.
The equipment selection personnel were responsible for identifying the sample of SSCs to be walked down in accordance with the guidance of EPRI 1025286, Section 4. The equipment selection personnel were selected based on their knowledge of the following areas:
(1)    plant operations (2)    plant documentation (3)    associated SSCs (4)    the IPEEE program The SWEs were responsible for the required walkdown inspections per the approved plant procedures and/or practices. The SWEs were required to have the following qualifications:
(1)    a degree in mechanical or civil/structural engineering or equivalent (2)    experience in seismic engineering as it applies to nuclear power plants (3)    successful completion of either the NTTF 2.3 seismic walkdown training course or the SQUG walkdown training course The licensing basis reviewers were responsible for the performance of evaluations of potentially adverse seismic conditions identified during the walkdowns against the licensing basis for the SSCs. They were selected based on having knowledge and experience in the following areas:
(1)    the seismic licensing bases of DCPP (2)    seismic qualification methods and documentation used at DCPP (3)    the DCPP requirements and procedures for entering documentation into the plant records system and the CAP The peer review personnel were responsible for collectively reviewing the following:
(1)    the SWEL for scope (2)    a sample of completed SWCs and AWCs to validate the process and to identify and communicate any lessons learned for the remaining walkdown efforts
 
(3)            and    decisions on                      adverse seismic (4)    this response being submitted to the N      to determine that the objectives and requirements of the NRC and the endorsed EPRI guidance were met The peer reviewers included members of the teams above and other plant personnel that have expertise in related plant processes.
Attachment A to this enclosure provides a summary of the qualifications of each of the team members and a table of activities that they performed.
SWEL Development The process for selecting the DCPP SSCs for the SWEL included appropriate variety of classes of equipment, environments, primary and secondary systems, new and replacement equipment, and other elements consistent with EPRI 1025286, Section 3.
The DCPP SWELs were developed for the following two groups of SSCs:
(1)    a sample of SSCs required to safely shutdown the reactor and maintain containment integrity (SWEL-1 )
(2)    a sample of SSCs required to support SFP-related processes including components that could potentially allow rapid drain-down of the SFP in the event of an earthquake (SWEL-2)
Development of SWEL-1 The development of the SWEL-1 followed a process defined in EPRI1025286 through the application of the following four screens:
(1)    Screen  No.1 - Seismic Category I (2)    Screen  No.2 - Equipment or System (3)    Screen  NO.3 - Support for Five Safety Functions (4)    Screen  NO.4 - Sample Considerations Screen No. 1 - Seismic Category I Screen No.1 narrowed the scope of SSCs included in SWEL-1 from the total population of SSCs to those that are classified as SC I, where SC I is defined in Regulatory Guide 1.29. However, as discussed in the UFSAR Section 3.2.1, the licensing basis for the seismic classification system for DCPP does not include Regulatory Guide 1.29, so SSCs are not explicitly classified as SC I. However, as discussed in the UFSAR Section 3.2.1, the licensing basis for the seismic classification system for SSCs meets the intent of Safety Guide 29, which uses the term "Category I" for "all structures,
 
systems,                                    safety"                  n",!,'I,",V"...... in the of a safe shutdown earthquake.
The application of Screen No.1 was based on the equivalency between DCPP's classification system and SC I as discussed previously in this enclosure. Design Class I SSCs and those Design Class II SSCs that have been seismically qualified for double design earthquake or Hosgri earthquake screened-in under Screen No.1.
Screen No.2 - Equipment or Systems Screen No.2 narrowed the scope of SSCs in SWEL-1 by selecting only those SSCs that do not regularly undergo inspections to confirm that their configuration continues to be consistent with the DCPP licensing basis. The following types of SSCsscreened-out of SWEL-1 under Screen No.2:
(1)    SC I - equivalent structures (2)    Containment penetrations (SWEL-1 includes certain CIVs)
(3)    SC I - equivalent piping systems Screen NO.3 - Support for the Five Safety Functions Screen NO.3 narrowed the scope of SSCs in the SWEL-1 to those that are associated with maintaining the following five safety functions:
(1)    Reactor reactivity control (2)    Reactor coolant pressure control (3)    Reactor coolant inventory control (4)    Decay heat removal (5)    Containment function Screen NO.3 was applied in two steps: (1) application to the output of Screen No.2 and (2) application to the "previous equipment list." These steps are described in the following subsections.
(1)    Application to the Output of Screen No.2 The application of Screen NO.3 to the output from Screen No.2 was completed and the list of SSCs that screen-in through the application of Screen NO.3 served as input to Screen NO.4 (2)    Application to the Previous Equipment Ust In accordance with EPRI 1025286, Section 3, DCPP used "previous equipment lists" as part of the application of Screen NO.3. DCPP used a combination of all SSCs from the following previous equipment lists that are SC I-equivalent:
 
(a)                    completed in 1994,        documented in    "Individual Examination      External Events Report for Diablo Canyon Power Plant Units 1 and 2 in Response to Generic Letter 88-20 Supplement 4" (b)    UFSAR, Appendix 9.5G, "Equipment Required for Safe Shutdown",
includes a tabulation of the minimum equipment required to bring the plant to a cold shutdown condition Screen NO.4 - Sample Considerations Screen NO.4 modifies the scope of the SWEL-1 from that selected in Screen NO.3 to sufficiently represent a broad population of SC I-equivalent SSCs in order to meet the overall objective of the seismic walkdowns. The following five sample selection attributes were applied under Screen NO.4:
(1)    a variety of types of systems (2)    major new and replacement equipment (3)    a variety of types of equipment (4)    a variety of environments (5)    equipment enhancements associated with the IPEEE program (note that no vulnerabilities were identified during the implementation of the IPEEE program for DCPP).
Finalization of the SWEL-1 The SWEL-1 was finalized to include representative item(s) from each of the above five attributes. In addition, the risk significance of specific SSCs was considered in the final selection process. See Attachment C of this enclosure for the final SWEL-1 list.
Development of SWEL-2 The development of the DCPP SWEL-2 followed a process defined by EPRI 1025286 through the application of the following four screens:
(1)    Screen  No. 1 - Seismic Category I (2)    Screen  No.2 - Equipment or System (3)    Screen  NO.3 - Sample Considerations (4)      Screen  NO.4 - Rapid Drain-Down Screen No. 1 - Seismic Category I Screen No. 1 narrowed the scope of SFP-related SSCs included in the SWEL-2 from the total population of SFP-related SSCs at DCPP to those that are classified as SC I, where SC I is defined in Regulatory Guide 1.29. Since Regulatory Guide 1.29 is not
 
directly applicable            the          was based on        equivalency between DCPP's classification system and SC I.
Screen No.2 - Equipment or Systems Screen No.2 narrowed the scope of SSCs in the DCPP SWEL-2 by selecting only those that do not regularly undergo inspections to confirm that their configuration continues to be consistent with the DCPP licensing basis. The following types of SSCs were screened-out of the SWEL-2 under Screen No.2:
(1)    SC I equivalent structures (2)    SC I - equivalent piping systems Screen NO.3 - Sample Considerations Screen NO.3 modified the scope of the SWEL-2 from that selected in Screen No.2 to sufficiently represent a broad population of SC I-equivalent SSCs in order to meet the overall objective of the seismic walkdowns. The following sample selection attributes were applied under Screen NO.3:
(1)    a variety of types of systems (2)    major new and replacement equipment (3)    a variety of types of equipment (4)    a variety of environments Screen No.4 - Rapid Drain-down Screen NO.4 identified items that could allow the SFP to drain rapidly. The scope of these items was typically limited to hydraulic lines connected to the SFP and the equipment connected to those lines.
All piping entering the SFP was added to the SWEL-2 to verify that siphoning of water from the SFP was not possible.
SFP Penetrations EPRI 1025286 requires for Screen No.4 that penetrations below about 10 feet above the top of the fuel assemblies be evaluated for rapid drain-down. At DCPP there are no such penetrations.
SFP Configurations Associated with Refueling Outages Drain-down flow paths that could exist as a result of the various SFP configurations associated with refueling outages at DCPP were investigated. SSCs associated with these flow paths were added to the SWEL-2.
 
The SWEL-2 was finalized to include representative item(s) having each of the attributes associated with Screen NO.3 and all items associated with potential rapid drain-down.
The Unit 1 components excluded from the SWEL-2 are listed in Table 1 below:
Table 1: Unit 1 Components Excluded from the SWEL-2 Listing Component                              Basis for Exclusion Refueling water purification pump      Not required for SFP inventory control or cooling Refueling water purification filter    Not required for SFP inventory control or cooling SFP demineralizers and resin traps    Not required for SFP inventory control or cooling, inaccessible due to high radiation levels FHB crane                              No functional relationship to SFP inventory control or cooling Spent fuel storage racks              Racks are free-standing (no anchorage to SFP),
are passive (no moving parts), and are not classified as targets in the SISIP Cask pit platform                      Used for anchorage of spent fuel transfer cask during cask loading operations. No functional relationship to SFP cooling or inventory control New fuel storage rack                  Not located in SFP SFP bridge crane                      No functional relationship to SFP inventory control or coolin_g New fuel elevator                      No functional relationship to SFP inventory control or cooling 480-V electric power                  Provides power to the SFP cooling system pumps, but components from this system have already been included in the SWEL-1 120-V electric power                  Provides power for SFP-related instrumentation, but components from this system have already been included in the SWEL-1 SFP cooling system pressure            No functional relationship to SFP inventory control instrumentation                        or cooling FHBVS fire dampers                    Associated with fires, not seismic events FHBVS fan air monitors                Not required for operation of FHBVS FHBVS emergency exhaust section        Post-accident mitigation components; not required for normal operation of FHBVS FHBVS normal roughing and HEPA filters  Post-accident mitigation components; not required for normal operation of FHBVS Combination of the SWEL-1 and the SWEL-2 Based on the guidance in EPRI 1025286, Figure 1-3, "Seismic Walkdowns, Area Walk-Bys, and Licensing Evaluations," the final DCPP SWEL is the combination of SWEL-1 and SWEL-2.
 
Requested              Lists (1)    Attachment B to this enclosure provides the Unit 1 SWEL-1 Base List 1, which is the equipment coming out of Screen No.3 and entering Screen No.4 of the SWEL-1.
(2)    Attachment C to this enclosure provides the Unit 1 SWEL-1 list which is the equipment coming out of Screen No.4 selected for seismic walkdown.
(3)    Attachment D to this enclosure provides the Unit 1 SWEL-2 Base List 2 of the equipment coming out of Screen No.2 and entering Screen NO.3 SWEL-2.
(4)    Attachment E to this enclosure provides the Unit 1 SWEL-2 Rapid Drain-Down list of equipment coming out of Screen NO.4 determined to potentially cause SFP to rapidly drain-down.
(5)    Attachment F to this enclosure provides the Unit 1 SWEL-2 list, which is a combination of the equipment coming out of Screens NO.3 and NO.4.
The system diversity of these lists is shown below in Table 2 and the equipment class diversity is shown in Table 3:
Table 2: Unit 1 Diablo Canyon Power Plant System Diversity Listing (SWEL-1)
System No.                  System Description          Selected Equipment Count 03          Feedwater                                          6 04          Turbine Steam Supply                              9 08          Chemical and Volume Control                        7 09          Safety Injection                                  5 10        Residual Heat Removal                              5 14        Component Cooling Water                            6 17        Salt Water                                        3 18        Fire Protection                                    1 21        Diesel Engine Generator                          14 23        Ventilation and Air Conditioning                  20 25        Compressed Air                                    1 36        Eagle 21                                          2 38        Solid State Protection                            4 41        Reactor Control Rods                              1 43        Plant Annunciators                                1 63        4.16-kV Electrical                                3 64        480-V Electrical                                  3 65        120-V Instrument AC                                3 67        125-V and 250-Vdc                                  4 96        Multiple System Panels                            9 Total            107
 
Table 3: Unit 1 Diablo Canyon          PUW~I  Plant Equipment Class Diversity Listing (SWEL-1)
    .:          ,.d.
Selected Fm  -, .:. ,."'. iL II tJ11lt:1I L                          Class Title Count 0          Miscellaneous                                                      8 1        Motor Control Centers                                              2 2          Low Voltage Switchgear                                            3 3          Medium Voltage Switchgear                                          1 4          Transformers                                                      3 5          Horizontal Pumps                                                  8 6          Vertical Pumps                                                    2 7          Fluid Operated Valves                                              15 8          Motor Operated Valves, Solenoid Operated Valves                    15 9          Fans                                                                4 10          Air Handlers                                                        5 1
11          Chillers                                                          0 12          Air Compressors                                                    1 2
13          Motor Generators                                                  0 14          Distribution Panels                                                2 15          Batteries on Racks                                                  1 16          Battery Chargers and Inverters                                      2 17          Engine Generators                                                  1 18          Instruments on Racks                                                4 19          Temperature Sensors                                                2 20          Instrumentation and Control Panels and Racks                      21 21          Tanks and Heat Exchangers                                          7 Total            107 Notes:
: 1. DCPP does not have any chillers, since there is not a chilled-water system. Seismically qualified air conditioning systems at DCPP use Freon-based cooling coils, condensers, and compressors.
: 2. The only motor generators at DCPP are those for the control rod drive system, which are not seismically qualified (excluded at Screen No.1), so they cannot be included in the seismic walkdowns.
Summary of Walkdown Process An SWC or an AWC package was prepared for each item on the SWEL. The actual walkdowns and walk-bys were performed by a minimum of two qualified SWEs.
Each walkdown or walk-by package contains, as a minimum, the following:
(1)        SWC or AWC, as appropriate (2)        relevant drawings (components, locations, etc.)
(3)        location (unit, area, etc.)
(4)        relevant anchorage details (for components subject to configuration verification)
(5)        relevant technical information
 
walkdown and area walk-by was completed by a team at least two qualified SWEs.          potentially adverse seismic conditions identified by the team were noted in the SWCs and AWCs. For each of the potentially adverse seismic related conditions and observations a lBE was performed to determine the component's ability to perform its required function. If this evaluation resulted in no potentially adverse seismic conditions, no further action was necessary and the results were documented in the walkdown checklists. For seismic conditions or observations that were determined to be adverse, the condition or observation was documented in the walkdown checklist and entered into the CAP. Other non-seismic related items identified during the team walkdowns were documented on the checklists and entered into the The lBEs were performed by DCPP cognizant engineers and subject to a peer review.
Potentially adverse seismic conditions that could not readily be resolved were entered into the CAP. The peer review team consisted of a minimum of two individuals and any comments were add ressed.
NRC Request:
: c.      Present a list of plant-specific vulnerabilities (including any seismic anomalies, outliers, or other findings) identified by the IPEEE and a description of the actions taken to eliminate or reduce them (including their completion dates)
PG&E Response:
As provided in PG&E letter DCl 94-133, "Response to Generic letter 88-20 Supplement 4, Iindividual Plant Examination of External Events for Severe Accident Vulnerabilities,'" dated June 27, 1994, (Reference 3), based on the results presented in the IPEEE study, no vulnerabilities with regard to seismic induced core damage exist at DCPP. There were other completed plant improvements that have a beneficial impact on the PRA that were included in the SWEl development.
NRC Request:
: d.      Results of the walkdown including key findings and identified degraded, non-conforming, or unanalyzed conditions. Include a detailed description of the actions taken or planned to address these conditions using the guidance in Regulatory Issues Summary 2005-20, Rev 1, Revision to NRC Inspection Manual Pari 9900 Technical Guidance, "Operating Conditions Adverse to Quality or Safety," including entering the condition in the corrective action program.
PG&E Response:
The completed walkdowns (SWEl-1 and SWEl.. 2 combined) for Unit 1 was comprised of 106 SWCs and 59 AWCs. Twenty-two potentially adverse seismic conditions were identified, placed in CAP, and evaluated. The engineering evaluations were completed
 
and the conditions did not adversely              performance of      required safety function.      CAP status of these items is identified in Attachment of this enclosure.
Attachment H of this enclosure provides a listing of components that were inaccessible in accordance with EPRI 1025286 and could not be inspected prior to submitting this response. These inaccessible items will be inspected prior to the end of the next refueling outage for Unit 1 (1 R18). 1R18 is currently scheduled to be completed in March 2014. An update from those inspections will be submitted within 60 days following the completion of 1R18.
Attachment I of this enclosure contains the SWCs including any associated LBEs.
Attachment J of this enclosure contains AWCs including any associated LBEs.
In summary, there were no deficiencies entered into CAP for Unit 1 that resulted in any safety-related SSCs being inoperable or non-functional.
NRC Request:
: e.      Discuss any planned ornewly installed protection and mitigation features PG&E Response:
There are currently no planned or newly-installed changes to the plant as a result of implementing this seismic walkdown guidance.
NRC Request:
: f.      Results and any subsequent actions taken in response to the peer review PG&E Response:
Various members of the peer review team reviewed the entire process of the DCPP seismic walkdown guidance, as well as each element. Peer reviewers did not review their own work. The peer review process included a review of the following:
(1)    the selection of the SSCs in the SWEL (2)    a sample of the SWCs and the AWCs (3)    the LBEs and decisions for entering the potentially adverse, conditions into CAP (4)    the submittal response Attachment K of this enclosure provides a table that corresponds to each of these activities and includes the results of the reviews and any actions taken to address those results.
: 1. NRC letter dated March 12, 201 "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near Term Task Force Review of Insights from the Fukushima Dai-ichi Accident"
: 2. NRC letter, "Endorsement of Electric Power Research Institute (EPRI) Draft Report 1025286, 'Seismic Walkdown Guidance''', dated May 31, 2012
: 3. PG&E letter DCl 94-133, dated June        1994, Response to Generic letter 88-
: 20. Supplement 4, "Individual Plant Examination of External Events for Severe Accident Vulnerabilities"
 
Enclosure 1 2-118 15 15 Attachment                                  Title A    Seismic Walkdown Equipment List Team Personnel Qualifications B    Unit 1: Seismic Walkdown Equipment List-1 Base List 1 C    Unit 1: Seismic Walkdown Equipment List-1 List D    Unit 1: Seismic Walkdown Equipment List-2 Base List 2 E    Unit 1: Seismic Walkdown Equipment List-2 Rapid Drain-Down List F    Unit 1: Seismic Walkdown Equipment List- 2 List G    Unit 1: Potentially Adverse Seismic Conditions Entered into the Corrective Action Program H    Unit 1: Inaccessible Component List I    Unit 1: Seismic Walkdown Checklists L    Unit 1: Area Walk-By Checklists K    Unit 1: Summary Findings of the Peer Reviews L    List of Acronyms
 
Page 1 The following contains a brief summary of the industry and educational qualification of the personnel that were directly involved with the equipment selection, seismic walkdowns, licensing basis reviews, individual plant examination of external events reviews, and peer reviews.
Team Members Nazar Jahangir,        is DCPP's manager of project engineering and the seismic project team lead. Mr. Jahangir is a degreed civil engineer and has over 30 years in the nuclear power industry at DCPP involved in plant seismic design and qualifications.
William Horstman, PE is a DCPP senior civil engineer on the Fukushima Response Project. Mr. Horstman is a degreed civil engineer specializing in structural engineering. Mr. Horstman has 32 years of experience in the commercial nuclear power industry, including over 22 years at DCPP, where he has provided services in civil engineering, seismic design, seismic analysis, license amendments, design criteria development, and licensing basis impact evaluations.
David Miklush is a degreed mechanical engineer with 34 years of experience in the nuclear industry at DCPP. Mr. Miklush was licensed as an operator for both units at DCPP for 7 years. Mr. Miklush has also served as operations director, maintenance director, and engineering director.
Patrick Huang, PE is a degreed civil engineer and has over 30 years of experience in the nuclear industry. Mr. Huang has worked for DCPP performing seismic equipment qualification for 23 years.
Matthew Sage is a degreed mechanical engineer and provided engineering support for this project.
Scott Maze, PE is a degreed civil engineer and has over 23 years of structural engineering experience including experience in seismic design, most of that in support of DCPP.
David Cryer is a degreed mechanical engineer, and has over 34 years in the nuclear power industry. Most of Mr. Cryer's work has been for DCPP in seismic qualification of equipment and pipe support.
 
is a degreed aeronautical engineer and has      years experience in the nuclear power industry in fields including PRA, fragility analysis and the        at DCPP.
Kevin Moore is a degreed structural engineer with over a year of experience in the nuclear power industry, including work at several nuclear generating stations.
Mr. Moore also participated in seismic walkdowns for San Onofre Nuclear Generating Station.
is a degreed engineer specializing in mechanics of structures and has 7 years of experience in mechanical and structural engineering. Four of Mr.
Grant's years in the industry have been dedicated to seismic walkdowns and seismic fragility analysis.
Krishna Amirineni,        is a degreed civil engineer with 4 years of seismic structural engineering experience in the nuclear power industry.
David Nakaki, Ph.D, PE is a degreed engineer with 25 years in the nuclear power industry. Mr. Nakaki has been involved with DCPP LTSP program in developing equipment fragility evaluations since the 1980s.
Nathan Barber is a degreed nuclear engineer with 10 years of experience in PRA at DCPP.
Murrell Evans provided operations support for this project. Mr. Evans has 36 years of experience in the nuclear industry, over 31 of which have been in support of DCPP, including holding positions as an operations shift manager and maintenance operation support manager.
Philippe Soenen is a degreed mechanical engineer and has 10 years of licensing experience in the nuclear industry, most of that in support of DCPP.
Mr. Soenen is a licensing supervisor.
Thomas Baldwin, PE is a degreed mechanical engineer with 26 years of experience with DCPP, holding positions such as a design engineer, senior reactor operator; engineering supervisor, procedure services manager, and licensing manager.
 
Enclosure1 PG&E DCL-1      18 Attachment Page 3 of 3 SWE Personnel Training                                  Personnel Functions and Qualifications Licensing    Peer Ops I                                          Support EPRI I        SWE          ESP      Ops                    IPEEE          Basis  Reviewer Systems                                          Personnel Individuals        SQUG                                                                      Reviewer (see note)
Nozar Jahangir            EPRI          x                                                            x      1,2,3 William Horstman          EPRI          x            x                                              x        2,3 Scott Maze                EPRI          x                                                            x        3 David Cryer                EPRI          x                                                            x        3 David Miklush              N/A                        x        x            x                                  4 Murrell Evans              N/A                                x                                                1 David Nakaki              SQUG            x Thomas Kipp              SQUG            x Kevin Moore                Both          x Fred Grant                EPRI          x Krishna Amirineni          EPRI          x                                                            x      1, .,3        x Nathan Barber              N/A                                                          x                      1 Matthew Sage                N/A                                                                                              x Patrick Huang              N/A                                                                        x        3 Philippe Soenen            N/A                                                                                  4 Thomas Baldwin              N/A                                                                                  4 System Engineers            N/A                                            x                                                x Note: There are four peer review activities listed below. The numbers correspond to the review performed
: 1. Peer review of the selection of the SSCs in the SWEl
: 2. Peer review of a sample of the SWCs and the AWCs
: 3. Peer review of the lBEs and the decisions for entering the potentially adverse conditions into CAP
: 4. Review of the submittal report
 
Enclosure1 PG&E            18 Attachment B Page 1 5 Attachment B Unit 1: Seismic Walkdown Equipment List-1 Base            1 EPRI 1025286 Screen No.3 (Five SF or CF)
RRC    RCPC    RCIC  DHR      CF  IPEEE  SSEl Structure, System, or Component (YIN)  (YIN)  (YIN)  (YIN)  (YIN)  (YIN) (YIN)                      Remarks Volume control tank outlet to CCP            Y      Y      Y      N      Y      Y    Y  Flow path pressure boundary and CIVs suction valves (lCV-112B, lCV-112C)
Emergency borate valve to charging          Y      Y      Y      N      Y      N    Y  Added from SSEl.
pump flow path (8104)
Valves in flow path to RCS through          Y      Y      Y      N      Y      N    Y  Added from SSEl.
regenerative Hx (8107,8108,8145, 8146,8147,8148)
Charging pump discharge FCV-128              Y      Y      Y      N      Y      N    Y  Added from SSEl.
RCP seal water RV-8121                      Y      Y      Y      N      Y      N    Y  Added from SSEl.
RWST to charging pump suction valves        N      N      N      N      Y      Y    Y  Valves in the recirculation between RHR SI and (8805A, 8805B)                                                                              CCP are not safe shutdown equipment; only valves that are CIVs are included.
RWST to SI pump suction valves (8976)        N      N      N      N      Y      Y    N  Valves in the recirculation between RHR SI and CCP are not safe shutdown equipment; only valves that are CIVs are included.
RHR discharge to charging pump suction      N      N      N      N      Y      Y    N  Valves in the recirculation between RHR SI and valves (8804A, 8804B)                                                                      CCP are not safe shutdown equipment; only valves that are CIVs are included.
Charging pump injection valves (8801A,      N      N      N      N      Y      Y    Y  Valves in the recirculation between RHR SI and 8801B,8803A,8803B)                                                                          CCP are not safe shutdown equipment; only valves that are CIVs are included.
Containment recirculation suction valves    N      N      N      N      Y      Y    N  Valves in the recirculation between RHR SI and (8982A, 8982B)                                                                              CCP are not safe shutdown equipment; only valves that are CIVs are included.
Accumulator outlet valves to cold leg        N      N      N      N      Y      N    Y  Added from SSEl.
valve CCW pumps                                    N      N      Y      Y      Y      Y    Y  Safe shutdown equipment
 
Enclosure1 PG&E              18 Attachment B Page 2 5 EPRI 1025286 Screen No.3 (Five SF or CF)
RRC    RCPC    RCIC  DHR      CF  IPEEE  SSEL Structure, System, or Component (YIN)  (YIN)  (YIN)  (YIN)  (YIN)  (YIN) (YIN)                  Remarks CCWHx                                    N      N      Y      Y      Y      Y    Y  Safe shutdown equipment CCW surge tank                          N      N      Y      Y      Y      Y    Y  Safe shutdown equipment CCW header A and B FCV-430 and          N      N      N      N      Y      Y    Y  CIVs only FCV-431 SG blowdown isolation valves (FCV-151,  N      N      N      N      Y      N    Y  Added from SSEL.
157,160,244,246,248,250,760,761, 762,763)
CCW pump auxiliary lube oil pumps        N      N      Y      Y      Y      N    Y  Added from SSEL.
(CCWAP1, CCWAP2, CCWAP3)
DG fuel off shutoff valves (LCV-85 to    Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment LCV-90)
DG engines and generator                Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment DG main lead terminallbox                Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DFO storage tanks (0-1,0-2)              Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment. Buried tank, permanently accessible for inspection.
DFO filters                              Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DFO pumps                                Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment DG air start receiver                    Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG inlet air filter                      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG inlet silencer                        Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG exhaust silencer                      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DFODT                                    Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG radiatorlwater pump                  Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment 4160 V Switchgear (Bus F, G, H)          Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment ASW pump overcurrent relays              Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment ASW pump undervoltage relays            Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment
 
Enclosure1 PG&E DCL-1      18 Attachment B Page 3 of 5 EPRI 1025286 Screen No.3 (Five SF or CF)
RRC    RCPC    RCIC  DHR      CF  IPEEE  SSEL Structure, System, or Component (YIN)  (YIN)  (YIN)  (YIN)  (YIN)  (YIN) (YIN)                  Remarks CCW pump undervoltage relay                Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment CCW pump overcurrent relays                Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment 4160-V load center transformer              Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment overcurrent relays (51 HF1 0 to 51 HH1 0)
CCP overcurrent relays                      Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment AFW motor driven pump overcurrent          Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment relays Startup transformer overcurrent relays      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment (Bus F, G, H)
ASW pump control transfer switch relay      Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment CCW pump control transfer switch relays    Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment 4160-V potential transformers (Bus F, G,    Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment H)
DG shutdown relays                          Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG overcurrent relays                      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG oil pressure timer relays                Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG overcrank timer relays                  Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG oil pressure relays                      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG jacket water temperature trip relays    Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG engine start relays                      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG overcrank relays                        Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG excitation cubicle                      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment DG control panel                            Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment Safeguard relay panel (Bus F, G, H)        Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment 480-V breaker cabinets (load centers)      Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment (SPF to SPH)
 
Enclosure1 PG&E DCL-1      18 Attachment B Page 4 of 5 EPRI 1025286 Screen No.3 (Five SF or CF)
RRC    RCPC    RCIC  OHR      CF  IPEEE  SSEL Structure, System, or Component (YIN)  (YIN)  (YIN)  (YIN)  (YIN)  (YIN) (YIN)                  Remarks CCW FCV motor control contactors        Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment CCW FCV control switches (FCV-430 ,      Y      Y      Y      Y      Y      N    Y  Added from SSEL.
FCV-431 )
480-V auxiliary relay panel              Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment 4160-V/480-V transformers (THF10 to      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment THH10)
Instrument breaker panels (PY11 to      Y      Y      Y      Y      Y      Y    N  Safe shutdown equipment PY16) 120-V inverters (IY11 to IY14)          Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment 125-Vdc batteries (BAT11 to BAT13)      Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment Vital battery racks                      Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment Vital battery chargers (BTC11, BTC12,    Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment BTC121,BTC131,BTC132) 125-Vdc and 125-Vdc                      Y      Y      Y      Y      Y      Y    Y  Safe shutdown equipment switchgearlbreaker panels (S011 to S013)
Nuclear auxiliary relay rack            Y      Y      Y      Y      Y      Y        Safe shutdown equipment SSPS                                    Y      N      Y      Y      Y      Y    N  Safe shutdown equipment Auxiliary safeguards cabinet            Y      N      Y      Y      Y      Y    N  Safe shutdown equipment Process control and protection system    N      Y      Y      N      Y      Y    N  Safe shutdown equipment Process control and protection system    N      Y      Y      N      Y      Y    N  Safe shutdown equipment instrument racks (P 1A to PiC)
Main control boards (1VB1 to 1VB5) and  Y      Y      Y      Y      Y      Y        Safe shutdown equipment control console (CC1 to CC3)
Hot shutdown panel                      Y      Y      Y      Y      Y      Y        Safe shutdown equipment
 
Enclosure1 PG&E DCL-1      18 Attachment B Page 5 of 5 EPRI 1025286 Screen NO.3 (Five SF or CF)
RRC    RCPC    RCIC  OHR      CF  IPEEE  SSEL Structure, System, or Component (YIN)  (YIN)  (YIN)  (YIN)  (YIN)  (YIN) (YIN)                  Remarks Containment fan coolers                    N      N      N      N      Y      Y        Safe shutdown equipment Containment purge valves                  N      N      N      N      Y      Y        Safe shutdown equipment (RCV-11, RCV-12, FCV-660, FCV-661)
Auxiliary building supply fans (S-35,      N      Y      Y      Y      Y      Y        Safe shutdown equipment S-36) 480-V switchgear room supply fans          N      Y      Y      Y      Y      Y        Safe shutdown equipment (S-43, S-44)
Auxiliary building exhaust fans            N      Y      Y      Y      Y      Y        Safe shutdown equipment (E-43, E-44)
Auxiliary building shutoff (discharge)    N      Y      Y      Y      Y      Y        Safe shutdown equipment dampers (FCV-5045, FCV-5046)
Auxiliary building backdraft dampers      N      Y      Y      Y      Y      Y        Safe shutdown equipment (BOO-43, BOO-44)
ASW pump control switch relays            Y      Y      Y      Y      Y      Y        Safe shutdown equipment ASW pump control switch relays at hot      Y      Y      Y      Y      Y      Y        Safe shutdown equipment shutdown panel CCW pump control switch relays            Y      Y      Y      Y      Y      Y        Safe shutdown equipment CCW pump control switch relays at hot      Y      Y      Y      Y      Y      Y        Safe shutdown equipment shutdown panel Auxiliary transformer overcurrent relays  Y      Y      Y      Y      Y      Y        Safe shutdown equipment (Bus F, G, H)
 
1: Seismic                              List Safety Function New or System Equipment                                                        Risk                      IPEEE Component                              Environment Replacement RRC RCPC    RCIC    DHR CF No. Class                                                      Significance SSEL    IPEEE  Enhancement (YIN)
(YIN)    (YIN)    (YIN)    (YIN)    Walkdown Package No.                  Remarks DC-0-17 -P-VOM-SW-1-FCV-ASW crosstie valve FCV-601            17      8        SWIE          N      N    N        Y      Y  N      Y        Y        Y        N                              Valve shared by both units.
601 Added due to association with Fire pump No. 1                      18      5        MIE          N      N    N        N      N  N      N        N        N        Y        DC-0-18-M-PP-FP1    LTSP/IPEEE modification. Pump common to both units.
Associated with LTSP/IPEE DFO transfer pump 0-2                21      5        DIE          N      Y    Y        Y      Y  Y      Y        Y        Y        Y      DC-0-21-M-PP-DFOTP2    modifications. DFO transfer pumps common to both units.
DFO transfer pump 0-2 filters        21      0        DIE          N      Y    Y        Y      Y  Y      N        N        Y        N      OC-0-21-P-FL-DFOTF2    DFO filters common to both units.
Added for variety of types of systems AFW lead 1 temperature element        3      19        MIE          N      N    N        N      N  N      N        N        N        N        DC-1-03-I-E-TE-117 and variety of equipment types (19).
AFW pump 1 (turbine-driven)            3      5        MIE          N      N    N        N      Y  N      Y        Y        Y        N      DC-1-03-M-PP-AFWP1 AFW pump 2 (motor- driven)            3      5        MIE          N      N    N        N      Y  N      Y        Y        Y        N      DC-1-03-M-PP-AFWP2 TO AFW pump Discharge to SG                                                                                                                      DC-1-03-P-VOH-FW-1-LCV-3      7          OE          N      N    N        N      N  Y      N        N        Y        N LCV-110                                                                                                                                                      110 AFW pump discharge to SG                                                                                                                        DC-1-03-P-VOH-FW-1-LCV-3      7        MIE          N      N    N        N      N  Y      N        N        Y        N                              Added based on peer review.
LCV-115                                                                                                                                                      115 TO AFW pump discharge to SG                                                                                                                      DC-1-03-P-\lOM-FW-1-LCV-3      8          OE          N      N    N        N      N  Y      N        N        Y        N                              Added based on peer review.
LCV-106                                                                                                                                                      106 FCV-95 control switch contactor 4      1        MIE          N      N    N        N      Y  N      N        N        N        N          DC-1-04-LD30      Added for Equipment Type (1).
(supply to TO AFW pump)
Stop valve No. FCV-152 on supply to                                                                                                                                      Added from SSEL. Special type of 4      0        MIE          N      N    N        N      Y  N      N        Y        N        N    DC-1-04-P-V-MS-1-FCV-152 TO AFW pump 1                                                                                                                                                            control valve for steam turbine.
DC-1-04-P-VOA-MS-1-FCV-MS isolation valve FCV-41              4      7          OE          N      N    N        N      Y  N      N        Y        Y        N 41 OC-1-04-P-VOA-M S-1-PCV-MS PCV-20 (10% dump)                  4      7          OE          N      N    N        N      Y  N      N        Y        Y        N 20 Isolation valves on supply to TO                                                                                                                OC-1-04-P-VOM-MS-1-FCV-4      8          OE          N      N    N        N      Y  N      N        Y        N        N                              Added from SSEL AFW pump (FCV-37)                                                                                                                                            37 MSSV RV-13                            4      7        MIE          N      N    N        N      Y  N      N        N        Y        N      OC-1-04-P-VR-MS-1-RV-13 MSSV RV-3                              4      7          OE          N      N    N        N      Y  N        N      N        Y        N      OC-1-04-P-VR-MS-1-RV-3 MSSV RV-61                            4      7          MIE        N      N    N        N      Y  N        N      N        Y        N      DC-1-04-P-VR-MS-1-RV-61
 
Safety Function New or System Equipment                                                        Risk                    IPEEE Component                                Environment Replacement RRC RCPC    RCIC    DHR CF No. Class                                                      Significance SSEL  IPEEE  Enhancement (YIN)
(YIN)    (YIN)  (YIN)    (YIN)      Walkdown Package No.                  Remarks MSSV RV-8                                4      7        OE          N      N    N      N      Y N        N        N      Y        N      DC-1-04-P-VR-MS-1-RV-8 Added from SSEL and variety of Boric acid storage tank 1 level 8      18        MIE          N      Y    N      Y      N N        N        Y      N        N          DC-1-08-I-T-L T-102  systems. Mounted in local panel no.
transmitter LT -102 XLT102.
Added based on recommendation from PRA Group. Variety of Seal water Hx                            8      21        MIE          N      Y    Y      Y      N  N      N        N      N        N        DC-1-08-M-HX-SWHE1 equipment types (21). Added for variety of systems CCP 1 (Emergency)                        8      5        MIE          N      Y    Y      Y      N  N      Y        Y      Y        N        DC-1-08-M-PP-CCP1    Includes sUbcomponent: APi Originally a reciprocal charging CCP 3 (Normal)                          8      5        MIE          Y      Y    Y      Y      N  N      N        Y      Y        N        DC-1-08-M-PP-CCP3    pump, replacement dissimilar to CCP1. Major Modification.
Boric acid blender inlet valve                                                                                                                    DC-1-08-P-VOA-CVCS  Added based on modification.
8      7        MIE          Y      N    N      N      N  Y      N        N      Y        N FCV-110A                                                                                                                                                FCV-110A        Seismically supported valve.
Emergency borate valve to charging                                                                                                                DC-1-08-P-VOM-CVCS  Added from SSEL. Seismically 8      8        MIE          N      Y    Y      Y      N  Y      N        Y      N        N pump (8104)                                                                                                                                                8104          supported.
Volume control tank outlet to CCP                                                                                                                DC-1-08-P-VOM-CVCS                                          8      8        MIE          N      Y    Y      Y      N  Y      N        Y      Y        N suction valve LCV-112B                                                                                                                                  LCV-112B Added due to association with SI pump 1                                9      5        MIE          N      N    N      N      N  N      Y        N      Y        Y          DC-1-09-M-PP-SIP1 LTSP/IPEEE modification.
Containment recirculation sump, sump strainer, trash rack, and vortex    9      0        ICE          Y      N    N      Y      Y  Y      N        N      N        N      DC-1-09-M-STR-STR-RH R 1  Added as major modification.
suppressor SI accumulator 1                        9      21        ICE          N      N    N      N      N  N      N        N      Y        N          DC-1-09-M-TK-AT1      Added for variety of environments.
RWST to charging pump suction 9      8        MIE          N      N    N      N      N  Y      N        Y      Y        N      DC-1-09-P-VOM-SI-1-8805A valve 8805A SI pump suction valves from RWST                                                                                                                                          Added due to association with 9      8        MIE          N      N    N      N      N  Y      N        N      N        Y    .DC-1-09-P-VOM-SI-1-8923A (8923A)                                                                                                                                                                    LTSP/IPEEE modification.
RHR Hx 1                                10    21        MIE          N      N    N      N      Y  N      N        Y      Y        N        DC-1-10-M-HX-RHE1 RHR pump 2                              10      6        MIE          N      N    N      N      Y  N      Y        Y      Y          N        DC-1-10-M-PP-RHRP2 DC-1-1 O-P-VOM-RH R RHR pump suction valve 8700A            10      8        MIE          N      N    N      N      Y  N        N        N    Y          N 8700A RHR pump recirculation valve                                                                                                                      DC-1-10-P-VOM-RHR                                          10      8        MIE          Y      N    N      N      Y  N        N        N    Y          N                              Added based on peer review.
FCV-641A                                                                                                                                                  FCV-641A RHR pump recirculation valve                                                                                                                      DC-1-1 O-P-VOM-RH R                                          10      8        MIE          Y      N    N      N      Y  N        N        N      Y        N FCV-641 B                                                                                                                                                FCV-641B DC-1-14-E-P-VOM-CCW    Associated with LTSP/lPEEE CCW header A flow FCV-430                14      8        MIE          Y      N    N      N      N  N        N        Y      Y        Y FCV-430        mod ification.
Added for variety of equipment (19).
CCW Hx output thermocouple TE-6          14      19        MIE          N      N    N      N      Y  N        N        Y      N        N          DC-1-14-I-E-TE-6 Electrical location code XTE-006.
 
Safety Function New or System Equipment                                                        Risk                    IPEEE Component                            Environment Replacement RRC RCPC    RCIC    DHR CF No. Class                                                      Significance SSEL  IPEEE  Enhancement (YIN)
(YIN)    (YIN)  (YIN)    (YIN)    Walkdown Package No.                  Remarks CCW Hx 1                            14      21        MIE          N      N    N      Y      Y  Y      Y        Y      Y        N      DC-1-14-M-HX-CCWH E 1 CCW pump 1                          14      5        MIE          N      N    N      Y      Y  Y      Y        Y      Y        N      DC-1-14-M-PP-CCWP1    Includes component No. CCWAP1 CCW surge tank                      14      21        OE          N      N    N      Y      Y  Y      N        Y      Y        N      DC-1-14-M-TK-CCWST 1 DC-1-14-P-VOA-CCW CCW Hx FCV-365                      14      7        MIE          Y      N    N      N      N  N      N        Y      N        N                              Added from SSEL FCV-365 ASW pump 1                          17      6        SWIE          N      N    N      Y      Y  N      Y        Y      Y        N        DC-1-17-M-PP-ASP1 DC-1-17-P-VOA-SW-1-FCV-ASW FCV-602                        17      7        MIE          N      N    N      Y      Y  N      N        Y      Y        N 602 DG No.1 lube oil electric heater    21      0        DIE          Y      Y    Y      Y      Y  Y      N        N      N        N        DC-1-21-E-HT-LOH 1    New component DG No. 1 control panel              21      20        DIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-21-E-PNL-GQD11 DG No. 1 excitation cubicle        21      20        DIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-21-E-PNL-SED11 Added for variety of types of DG No. 1 DC power supply transfer 21      14        DIE          N      Y    Y      Y      Y  Y      N        N      N        N        DC-1-21-E-S-EQD-11    equipment (14).
switches DFO transfer pump 0-1 local                                                                                                                                          Added for equipment type (1).
21        1        MIE          N      Y    Y      Y      Y  Y      Y              N        N          DC-1-21-LPH65 contactor panel Includes DFOTD1, JWP1, main lead DG No. 1 engine                    21      17        DIE          N      Y    Y      Y      Y  Y      Y        Y      Y        N        DC-1-21-M-EN-DEG1 terminal box 1, generator 1 DG No. 1 radiator A                21        0        DIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-21-M-HX-JWR 1A DG No. 1 exhaust silencer            21      0        DIE          N      Y    Y      Y      Y  Y      N        N      Y        N        DC-1-21-M-MISC-ES1 DG No.1 inlet silencer              21      0        DIE        N      Y    Y      Y      Y  Y      N        N      Y        N        DC-1-21-M-MISC-IS1 DG No.1 air start receiver A        21      21        DIE        N      Y    Y      Y      Y  Y        N      N      Y        N        DC-1-21-M-TK-AR1A DG No.1 inlet air filter            21      0        DIE        N      Y    Y      Y      Y  Y        N      N      Y        N        DC-1-21-P-FL-CAF1 DG No. 1 fuel off shutoff valve                                                                                                            DC-1-21-P-VOA-DEG-1-LCV-21      7        DIE        N      Y    Y      Y      Y  Y        N      Y      Y        N 85 header B Added per recommendation by PRA Post-LOCA sampling room                                                                                                                                              group. Added for variety of systems 23      0        MIE          N      N    N      N      N  N        N        N      N        N      DC-1-23-E-HT-EH-29A ventilation duct heater No. 29A                                                                                                                                      and for a variety of types of equipment (10).
Control room ventilation control 23      20        MIE        N      N    N      N      N  N        N        N      Y        N      DC-1-23-E-PNL-CRC1 cabinet CCR 1
 
Enclosure1 2-118 C
Page 4 of 6 Safety Function New or System Equipment                                                        Risk                    IPEEE Component                                Environment Replacement RRC RCPC    RCIC    DHR CF No. Class                                                      Significance 8SEL  IPEEE  Enhancement (YIN)
(YIN)    (YIN)  (YIN)    (YIN)    Walkdown Package No.                    Remarks CFCU SI system and auto bus 23      20        MIE          Y      Y    Y      Y      Y Y        N        N      N        N      DC-1-23-E-PNL-PCCFC1 transfer relay cabinet, Bus F Control room ventilation air 23      12        DIE          N      N    N      N      N  N      N        N      Y        N      DC-1-23-M-BC-C P-35    Added for variety of environments.
conditioning compressor CP-35 Containment fan cooler No.1              23      10        ICE          N      N    N      N      N  Y      N        N      Y        N      DC-1-23-M-BF-CFC1-1 Auxiliary building ventilation exhaust 23      9        DIE          N      N    Y      Y      Y  Y      N        N      N        N        DC-1-23-M-BF-E-1      Added for safety function fan E-1 Added from SSEL. Added for variety ASW pump compartment exhaust 23      9        SWIE          N      Y    Y      Y      Y  Y      N        Y      N        N        DC-1-23-M-BF-E-103    of environments.
fan E-103 480-V switchgear ventilation exhaust 23      10          OE          N      N    Y      Y      Y  Y      N        Y      Y        N        DC-1-23-M-BF-E-43 fan E-43 Auxiliary building ventilation supply 23      9        DIE          N      N    Y      Y      Y  Y      N        N      N        N        DC-1-23-M-BF-S-31    Added for safety function fan S-31 Control room ventilation supply fan 23      10        DIE          N      N    Y      Y      Y  Y      Y        N      Y        N        DC-1-23-M-BF-S-35    Includes CR35 8-35 480-V switchgear ventilation supply 23      9          OE          N      N    Y      Y      Y  Y      N        Y      Y        N        DC-1-23-M-B F-S-43 fan S-43 Control room ventilation air                                                                                                                                              Added for variety of environments.
23      10        DIE          N      N    N      N      N  N      N        N      Y        N        DC-1-23-M-HX-CR35 conditioning condenser CR35                                                                                                                                                Variety of types of equipment (10) 480-V switchgear ventilation shutoff                                                                                                              OC-1-23-P-O-VAC-1-FCV-23      7          OE          N      N    Y      Y      Y  Y      N        N      Y        N                              Associated with IPEEE modification.
(discharge) damper FCV-5045                                                                                                                                5045 Control room ventilation supply fan                                                                                                                                        Added per recommendation from 23      8        DIE          N      N    N      N      N  N      N        N      N        N    DC-1-23-P-O-VAC-1-MOD-1 0 suction damper MOD-1 0                                                                                                                                                    PRA group.
Control room ventilation supply fan                                                                                                                                        Added per recommendation from 23      8        DIE          N      N    N      N      N  N      N        N      N        N    DC-1-23-P-D-VAC-1-MOD-9 suction damper MOD-9                                                                                                                                                      PRA group.
Control room ventilation filter unit                                                                                                                                      Added per recommendation from 23      18        DIE          N      N    N      N      N  N      N        N      N        N        DC-1-23-P-FL-FU39 FU39                                                                                                                                                                      PRA group.
DC-1-23-P-VOA-VAC-1-FCV-Containment purge valve FCV-660          23      7        ICE          N      N    N      N      N  Y      N        N      Y        N 660 DC-1-23-P-VOA-VAC-1-RCV-Containment purge valve RCV-11          23      7        ICE          N      N    N      N      N  Y        N        N    Y          N 11 Hydrogen monitoring system supply                                                                                                                DC-1-23-P-VOS-VAC-1-FCV-  Added for variety of equipment types 23      8        ICE          N      N    N      N      N  Y        N        N    N          N valve FCV-238                                                                                                                                                238            (8)
Post-LOCA sample system return                                                                                                                  DC-1-23-P-VOS-VAC-1-FCV-  Added for variety of equipment types 23      8        MIE          N      N    N      N      N  Y        N        N    N          N line to containment valve FCV-700                                                                                                                            700            (8)
ASW FCV-602 backup air 25      21        MIE          N      N    N      Y      Y  N        N        N      N        N    DC-1-25-M-TK-BUAS-602    Added for variety of systems.
accumulator
 
Safety Function New or System Equipment                                                        Risk                    IPEEE Component                                Environment Replacement RRC RCPC    RCIC    DHR CF No. Class                                                      Significance SSEL  IPEEE  Enhancement (YIN)
(YIN)    (YIN)  (YIN)    (YIN)  Walkdown Package No.                Remarks Auxiliary relay rack No. RNARA          36      20        MIE          N      N    Y      N      N  N      N        N      Y        N    DC-1-36-E-PNL-RNARA Process control and protection 36      18        MIE          N      N    Y      Y      N Y        N        N      Y        Y    DC-1-36-I-PNL-RN01A    Associated with IPEEE modification.
system - process control rack No. 1A SSPS - input relay cabinet No.
38      20        MIE          N      Y    N      Y      Y  Y      Y        N      Y        N      DC-1-38-I-PNL-RNSIA RNSIA SSPS - logic cabinet No. RNSLA          38      20        MIE          N      Y    N      Y      Y  Y      Y        N      Y        N      DC-1-38-I-PNL-RNSLA SSPS - output relay cabinet No.
38      20        MIE          N      Y    N      Y      Y  Y      Y        N      Y        N    DC-1-38-I-PN L-RNSOA RNSOA SSPS - test cabinet No. RNSTA          38      20        MIE          N      Y    N      Y      Y  Y      Y        N      Y        N      DC-1-38-I-PNL-RNSTA Reactor trip switchgearlcontrol panel 41      20        MIE          N      Y    N      N      N  N      N        N      Y        N    DC-1-4i-E-PNL-PORTBi No. B1 Process control and protection Associated with IPEEE modification.
system - computer input rack            43      18        MIE          N      N    Y      Y      N  Y      N        N      Y        Y      DC-1-43-I-PNL-RNCI1 No. RNCli 4160-V switchgear, Bus G                63      3        MIE          Y      Y    Y      Y      Y  Y      N        Y      Y        N        DC-i-63-E-LC-SHG 4160-V safeguard relay panels          63      20        MIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-63-E-PNL-RHG 4160-V potential transformer, Bus G    63      4        MIE          N      Y    Y      Y      Y  Y      N        N      Y        N    DC-1-63-E-XF-SHG 12PT 480-V breaker cabinets (load 64      2        MIE          N      Y    Y      Y      Y  Y      N        Y      Y        N        DC-1-64-E-LC-SPF centers), Bus F Associated with 480-V Motor Control Auxiliary relay panel                  64      20        MIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-64-E-PNL-ARP Centers 4160-V/480-V transformer 64        4        MIE          N      Y    Y      Y      Y  Y      N        N    Y          N      DC-1-64-E-XF-THF1 0 No. THF10 120-Vac instrument breaker panel 65      2        MIE          N      Y    Y      Y      Y  Y        N        N    Y          N      DC-1-65-E-LC-PY11 No. PY11 120-Vac inverter No. IYii                65      16        MIE          Y      Y    Y      Y      Y  Y        N        Y    Y          N      DC-i-65-E-UPS-IY1i Added for variety of types of Regulating transformer No. TRY11        65      4        MIE          Y      Y    Y      Y      Y  Y        N        N    N          N      DC-1-65-E-XF-TRY11  equipment (4) and as replacement equipment 125-Vdc batteries and battery rack                                                                                                                                      Batteries and racks replaced as part 67      15        MIE          Y      Y    Y      Y      Y  Y        N        Y    Y          N      DC-1-67-E-BT-BAT11 No. BAT11                                                                                                                                                              of major modification.
125-Vdc battery charger 67      16        MIE          Y      Y    Y      Y      Y  Y        Y        Y      Y        N    DC-1-67 -E-BTC-BTC 11 No. BTC11
 
Page 6 Safety Function New or System Equipment                                                        Risk                    IPEEE Component                            Environment Replacement RRC RCPC    RCIC    DHR CF No. Class                                                      Significance SSEL  IPEEE  Enhancement (YIN)
(YIN)    (YIN)  (YIN)    (YIN)  Walkdown Package No.                Remarks No safety function, but seismically 125-Vdc distribution panel 67      14        MIE          N      N    N      N      N  N      N        N      N        N      DC-1-67-E-LC-PD25    qualified. Added for a variety of No. PD25 types of equipment (14).
125-Vdc switchgearlbreaker panel 67      2        MIE          N      Y    Y      Y      Y  Y      N        Y      Y        N      DC-1-67-E-LC-SD11 No. SD11 Control console No. CC 1            96      20        MIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-96-E-PN L-1 CC 1 Main control board No. VB1          96      20        MIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-96-E-PNL-1 VB 1 Hot shutdown panel                  96      20        MIE          N      Y    Y      Y      Y  Y      N        N      Y        N      DC-1-96-E-PNL-HSP Mechanical panel PM-101 (CCW                                                                                                                                      Contains transmitter No.:
96      20        MIE          N      N    N      N      Y  N      N        Y      N        N    DC-1-96-M-PNL-PM-101 supply header instrumentation)                                                                                                                                    - FT-65, FT-68, FT-69 Added from SSEL.
Mechanical panel PM-103 (SG No.1 96      20          OE          Y      N    N      N      N  N      N        Y      N        N    DC-1-96-M-PNL-PM-103  Contains transmitter No.:
instrumentation)
                                                                                                                                                                  - PT-514, PI-518 Mechanical panel PM-185 Contains transmitter No.:
(condensate storage tank            96      20        MIE          Y      N    N      N      N  N      N        Y      N        N    DC-1-96-M-PNL-PM-185
                                                                                                                                                                    - LT-40 instrumentation)
Contains transmitter No.:
Mechanical panel PM-45 (SG level 96      20        ICE          Y      N    N      N      N  N      N        Y      N        N    DC-1-96-M-PNL-PM-45    - LT-529.
instrumentation)
Mechanical panel PM-79 (reactor Contains transmitter No.:
levellwide range pressure            96      20        MIE          N      N    N      Y      Y  N      N        Y      N        N      DC-1-96-M-PNL-PM-79
                                                                                                                                                                    - PT-403 instrumentation)
Mechanical panel PM-89 (RC Loop 2                                                                                                                                  Contains transmitter No.:
96      20        ICE          N      N    N      Y      Y  N        N      Y      N        N      DC-1-96-M-PNL-PM-89 cold leg instrumentation)                                                                                                                                          - PT-460
 
2
                                                      ,.II.
It.JUllcau Quick opening transfer tube closure Spent fuel pool pumps Spent fuel pool heat exchanger Makeup water transfer pump Indoor hose reel stations Spent fuel pool pump transfer switches Spent fuel pool cooling system temperature instrumentation Fuel handling building ventilation system supply fans Fuel handling building ventilation system fan flow control damper Fuel handling building ventilation system mode dampers Fuel handling building ventilation system backdraft dampers (fan shutoff dampers)
Fuel handling building ventilation system normal exhaust fan Fuel handling building ventilation system normal backdraft dampers (fan shutoff dampers)
Fuel handling building ventilation system normal fan flow control damper
 
Spent Fuel Pool Rapid Drain-Down Equipment List Component                                          Comments QOTTC                                          Verify condition of QOTTC SFP fill piping from hold-up tank recirculation Verify that pipe terminates above elevation 122 ft pumps                                          and check for anti-siphon hole Verify that the SFP wall penetration is above Suction piping to SFP pumps elevation 122 ft Verify that anti-siphon hole is present and Return piping from SFPCS Hxs unobstructed SFP skimmer suction piping                      Verify that suction point is above elevation 122 ft Verify that termination point is above elevation SFP skimmer return piping 122 ft Fuel transfer tube expansion joint              Verify condition of expansion joint Verify that removable spool has been removed or Return piping from makeup water transfer that submerged termination of pipe is above pumps elevation 122 ft
 
Enclosure1 PG&E DCL-1            18 Attachment F 1 2 Attachment F Unit 1: Seismic Walkdown Equipment List-2 List Rapid    New or Structure, System, or    System Equipment.                              S-Q    Drain- Replacement Component            No. Class    Environment                (YIN)    down      (YIN)    WID Package No.              Remarks Makeup water transfer                                                                                  DC-O-16-M-PP-    Primary source for refilling 16      5              MIE                  Y        N        N pump No.1                                                                                                MUWTP1        SFP.
Added due to use for SFP makeup per OP AP-22. The Indoor hose reel station                                                                            DC-1-18-F-HR-FW-18      0              MIE                  Y        N        N                        same hose reel station is FW-120-A38-1                                                                                            120-A38-1 used to refill the SFP in either unit.
Fuel transfer tube                                                                                  DC-1-42-M-EJ-FTC-42      0              MIE                  Y        Y        N expansion joint                                                                                            1-EJ2 DC-1-42-M-MISC-QOTTC                        42      0              ICE                  Y        Y        N QOTTC SFP fill piping from hold-                                                                                              Verify that pipe terminates DC-1-08-P-P-U N E-up tank recirculation        8      0            MIE                    N        Y        N                        above elevation 122 ft and 1119 pumps                                                                                                                  check for anti-siphon hole.
DC-1-13-M-PP-SFP pump No.1                13      5            MIE                    Y        N        N SFPP1 DC-1-13-M-HX-SFP Hx                      13      21            MIE                    Y        N        N SFPHE1 SFP pump transfer switch 13      1            MIE                    Y      N          N      DC-1-13-SFPPTS1 No.2
 
PG&E Attachment F Page 2 2 Rapid    New or Structure, System, or System Equipment.              S-Q  Drain- Replacement Component          No. Class    Environment (YIN) down      (YIN)    WID Package No.              Remarks Verify that the SFP wall Suction piping to SFP                                                          DC-1-13-P-P-U N E-13        0        MIE      Y    Y        N                          penetration is above pumps                                                                                154 elevation 122 ft.
Return piping from                                                            DC-1-13-P-P-U N E- Verify that anti-siphon hole is 13      21        MIE      N    Y        N SFPCS Hx                                                                              159        present and unobstructed.
SFPC temperature                                                                                  Mounted on SFPCS Hx 13      19        MIE      Y    N        N      DC-1-13-1-I-TI-653 instrumentation                                                                                  Outlet piping SFP skimmer suction                                                            DC-1-13-P-P-U N E- Verify that suction point is 13        0        MIE      N    Y        N piping Line-1080                                                                    1080        above elevation 122 ft.
SFP skimmer suction                                                            DC-1-13-P-P-U N E- Verify that suction point is 13        0        MIE      N    Y        N piping Line-1118                                                                    1118        above elevation 122 ft.
SFP skimmer return                                                            DC-1-13-P-P-U N E- Verify that termination point 13        0        MIE      N    Y        N piping Line-1121                                                                    1121        is above elevation 122 ft.
SFP skimmer return                                                            DC-1-13-P-P-U N E- Verify that termination point 13        0        MIE      N    Y        N piping Line-1122                                                                    1122        is above elevation 122 ft.
SFP skimmer return                                                            DC-1-13-P-P-U N E- Verify that termination point 13        0        MIE      N    Y        N piping Line-1123                                                                    1123        is above elevation 122 ft.
Verify that removable spool Return piping from                                                                                has been removed or that DC-1-16-P-P-U N E-makeup water transfer    16      0          MIE      N    Y        N                        submerged termination of 2242 pump (Line-2242)                                                                                  pipe is above elevation        i 122 ft.
FHBVS Normal exhaust 23      9          DIE      Y    N        N      DC-1-23-M-BF-E-4 Fan E-4
 
Description          Walkdown Checklist        Finding        Status Potential seismic interaction                              Spatial between sprinkler and                1-AFWP1          Interaction -    Note conduit                                                  Fire/Flood Light fixture near S-31 filters Spatial could swing into filter              1-BFS-31                          Note Interaction - SISI housing Seismically induced flooding potential found in piping                                  Spatial close to service cooling              1-CCWHE          Interaction -  Closed water piping in CCW Hx                                  Fire/Flood room Improperly latched doors on 1-RNAR-A        Configuration    Closed Eagle racks Missing grating clips near 1-RV-13        Configuration    Note MSSV Missing grating clip near 1-RV-3        Config u ration  Note 1-PCV-20 LD-30 anchor bolts installed DC-1-04-LD30      Configuration    Note undersized CCW Hx 1-1 support: spalled        DC-1-14-M-HX-concrete (edge of pedestal)                          Deg raded-Other    Note CCWHE1 Hoist chain SISI issue with                                Spatial DC-1-14-M-PP-CCWP 1                      Note CCW Pump 1-1                                        Interaction - SISI Light fixture in ASW pump 1-                              Spatial DC-1-17 -M-PP-ASP1                      Note 1 room Issue                                        Interaction - SISI Hose reel A38 gaps at wall      DC-1-18-F-HR-FW-120-Configuration    Note brackets                                A38-1 Feedwater hose reel A38        DC-1-18-F-HR-FW-120-      Spatial Note swings into valve                      A38-1        Interaction - SISI Screws missing from DFO          DC-1-21-P-VOA-DEG-Configuration    Note grating (1-1)                          1-LCV-85 Screws missing at DFO DC-1-21-P-VOA-DEG-grating (1-2); (EOC From                              Configuration    Note 1-LCV-85 -EOC DEG 1-1 inspection)
Screw missing from DFO DC-1-21-P-VOA-DEG-grating (1-3) (EOC from DEG                            Configuration    Note 1-LCV-85-EOC 1-1 inspection)
Fan E-103 anchor bolt lacks DC-1-23-M-BF-E-103    Configuration    Note full thread engagement Weld size discrepancy for DC-1-23-M-BF-S-35    Configuration    Note Fan S-35
 
Attachment Page 2 of 2 U.N . . I I  _D
          ~"""""'iption            1I!1I!;;.IIIKIrlIUlN n :tn::ckl            19            Statu~
Modification to damper DC-1-23-P-D-VAC (channel stiffeners) not                                              Config u ration        Note MOD-10 shown on drawings.
Incorrect drawing for FU39 DC-1-23-P-FL-FU39                Config u ration        Note support anchor Weak light fixture support                DC-1-36-E-PNL-                Spatial Note connection                                          RNARA          Interaction - SISI UPS IY11 missing some mounting bolts for                  DC-1-65-E-UPS-IY11                Configuration          Note transformers Expansion anchor edge distance issue on Panel            DC-1-65-E-XF-TRY11                Configuration          Note TRNM Potential clearance issue at      DC-1-04-P-VOA-MS                                                                      Config u ration        Note MS-1-FCV-41                                          FCV-41 Note: In accordance with EPRI 1025286, these conditions have been entered into the CAP. These items are open and have been prioritized in accordance with CAP guidance.
 
1:
A n.
                                  .= ... =    Seism      Ikdown :t  .*.. 1: ...
Walkdown
      'VU.pUB 111::1    'II::~"I  BIJUUU Checklist DG 1-1 control panel                          DC-1-21-E-PNL-GQD11                1-DEG-11    1R18 DG 1-1 excitation cubicle                      DC-1-21-E-PNL-SED11                1-DEG-11    1R18 DG 1-1 radiator No. 1A                        DC-1-21-M-HX-JWR 1A                1-DEG-11    1R18 480-V breaker cabinet (load center)
DC-1-64-E-LC-SPG                    1-MCCBUSG  1R18 Bus G 4160-V/480-V transformer THG10                DC-1-64-E-XF-THG10                  1-MCCBUSG  1R18 Reactor trip switchgear/control panel DC-1-41-E -PN L-PORTB 1            1-PORTB1    1R18 No. PORTB1 Mechanical panel PM-89 (RC Loop DC-1-96-M-PNL-PM-89                1-PM-89    1R18 2 cold leg instrumentation)
Sl accumulator 1-1                            DC-1-09-M-TK-AT1                    1-SIAT1    1R18 Containment recirculation sump, sump strainer, trash rack, and vortex          DC-1-09-M-STR-STR-RHR 1            1-STR-RHR1  1R18 suppressor Quick Opening Transfer Tube DC-1-42-M-MISC-QOTTC                1-QOTTC    1R18 Closure Hydrogen monitoring system supply              DC-1-23-P-VOS-VAC-1-FCV-1-FCV-238  1R18 valve VAC-1-FCV-238                            238 Containment purge valve                        DC-1-23-P-VOA-VAC-1-RCV-1-PEN62    1R18 VAC-1-RCV-11                                  11 Containment purge valve                        DC-1-23-P-VOA-VAC-1-FCV-1-PEN61    1R18 VAC-1-FCV-660                                  660 Mechanical panel PM-45 (SG level DC-1-96-M-PNL-PM-45                1-PM-45    1R18 instrumentation)
Containment fan cooler No. 1-1                DC-1-23-M-BF-CFC 1-1                1-CFC1      1R18 4160-V switchgear Bus G                        DC-1-63-E-LC-SHG                    1-4KV-G    1R18 4160-V safeguard relay panel Bus G            DC-1-63-E-PNL-RHG                  1-4KV-G    1R18 125-Vdc switchgear/breaker panel DC-1-67 -E-LC-SD11                  1-BTC11    1R18 No. SD11 4160-V potential transformer No.
DC-1-63-E-XF-SHG12PT                1-4KV-G    1R18 SHG12PT
 
Number of SWC  Number Number of SWC Number        Checklist pages ofLBEs LBE pages DC-0-16-M-PP-M UWTP 1                2          0      0 DC-0-17 -P-VOM-SW-1-FCV-601          2          0      0 DC-0-18-M-PP-FP1                    2          1      1 DC-0-21-M-PP-DFOTP2                  2          1      1 DC-0-21-P-FL-DFOTF2                  2          0      0 DC-1-03-I-E-TE-117                  2          0      0 DC-1-03-M-PP-AFWP1                  2          0      0 DC-1-03-M-P P-AFWP2                  2          0      0 DC-1-03-P-VOH-FW-1-LCV-110          2          1      1 DC-1-03-P-VOH-FW-1-LCV-115          2          0      0 DC-1-03-P-VOM-FW-1-LCV-106          2          1      1 DC-1-04-LD30                        2          1      2 DC-1-04-P-V-MS-1-FCV-152            2          1      1 DC-1-04-P-VOA-MS-1-FCV-41            2          2      2 DC-1-04-P-VOA-MS-1-PCV-20            2          0      0 DC-1-04-P-VOM-MS-1-FCV-37            2          0      0 DC-1-04-P-VR-MS-1-RV-13              2          0      0 DC-1-04-P-VR-MS-1-RV-3              2          0      0 DC-1-04-P-VR-MS-1-RV-61              2          0      0 DC-1-04-P-VR-MS-1-RV-8              2          0      0 DC-1-08-I-T-LT-102                  2          0      0 DC-1-08-M-HX-SWHE1                  2          0      0 DC-1-08-M-PP-CCP1                    2          0      0 DC-1-08-M-PP-CCP3                    2          1      1 DC-1-08-P-P-LlNE-1119                2          0      0 DC-1-08-P-VOA-CVCS-1-FCV-110A        2          0      0 DC-1-08-P-VOM-CVCS-1-81 04          2          0      0 DC-1-08-P-VOM-CVCS-1-LCV-112B        2          0      0 DC-1-09-M-PP-SIP1                    2          0      0 DC-1-09-P-VOM-SI-1-8805A            2          0      0 DC-1-09-P-VOM-SI-1-8923A            2          0      0 DC-1-10-M-HX-RHE1                    2          0      0 DC-1-1 O-M-PP-RH RP2                2          0      0 DC-1-10-P-VOM-RHR-1-8700A            2          0      0 DC-1-10-P-VOM-RHR-1-FCV-641A        2          0      0
 
Number of SWC  Number  Number of SWC Number          Checklist pages of LBEs LBE pages DC-1-1 0-P-VOM-RHR-1-FCV-641 B        2            0      0 DC-1-13-1-1-TI-653                    2            0      0 DC-1-13-M-HX-SFPHE1                  2            0      0 DC-1-13-M-PP-SFPP1                    2            0      0 DC-1-13-P-P-LI N E-154                2            0      0 DC-1-13-P-P-LlNE-159                  2            0      0 DC-1-13-P-P-LI N E-1 080              2            0      0 DC-1-13-P-P-LlNE-1118                2            0      0 DC-1-13-P-P-LlNE-1121                2            0      0 DC-1-13-P-P-LlNE-1122                2            0      0 DC-1-13-P-P-LlNE-1123                2            0      0 DC-1-13-SFPPTS1                      2            2      2 DC-1-14-E-P-VOM-CCW-1-FCV-430        2            0      0 DC-1-14-I-E-TE-6                      2            0      0 DC-1-14-M-HX-CCWH E 1                2            1      1 DC-1-14-M-P P-CCWP 1                  2            1      1 DC-1-14-M-TK-CCWST1                  2            0      0 DC-1-14-P-VOA-CCW-1-FCV-365          2            0      0 DC-1-16-P-P-LI N E-2242              2            0      0 DC-1-17 -M-PP-ASP1                    2            2      2 DC-1-17 -P-VOA-SW-1-FCV-602          2            0      0 DC-1-18-F-HR-FW-120-A38-1            2            2      2 DC-1-21-E-HT-LOH1                    2            0      0 DC-1-21-E-S-EQD-11                    2            0      0 DC-1-21-LPH65                        2            0      0 DC-1-21-M-EN-DEG1                    2            0      0 DC-1-21-M-MISC-ES1                    2            0      0 DC-1-21-M-MISC-IS1                    2            0      0 DC-1-21-M-TK-AR 1A                    2            0      0 DC-1-21-P-FL-CAF1                    2            0      0 DC-1-21-P-VOA-DEG-1-LCV-85            2            1      1 DC-1-23-E-HT-EH-29A                  2            0      0 DC-1-23-E-PNL-CRC1                    2            0      0 DC-1-23-E-PNL-PCCFC1                  2            0      0 DC-1-23-M-BC-CP-35                    2            0      0 DC-1-23-M-BF-E-1                      2            0      0 DC-1-23-M-BF-E-4                      2            0      0 DC-1-23-M-BF-E-103                    2            1      1
 
Number of SWC        Number      Number of SWC Number                    Checklist pages      of LBEs      LBE pages DC-1-23-M-BF-E-43                                2                1            1 DC-1-23-M-BF-S-31                                2                0            0 DC-1-23-M-BF-S-35                                2                2            4 DC-1-23-M-BF-S-43                                2                1            1 DC-1-23-M-HX-CR35                                2                0            0 DC-1-23-P-D-VAC-1-FCV-5045                        2                1            1 DC-1-23-P-D-VAC-1-MO D-1 0                        2                1            18 DC-1-23-P-D-VAC-1-MOD-9                          2                0            0 DC-1-23-P-FL-FU39                                2                1            1 DC-1-23-P-VOS-VAC-1-FCV-700                      2                0            0 DC-1-25-M-TK-BUAS-602                            2                0            0 DC-1-36-E-PNL-RNARA                              2                1            1 DC-1-38-I-PN L-RNSIA                              2                0            0 DC-1-38-I-PNL-RNSLA                              2                0            0 DC-1-38-I-PN L-RNSOA                              2                0            0 DC-1-38-I-PN L-RNSTA                              2                0            0 DC-1-42-M-EJ-FTC-1-EJ2                            2                1            1 DC-1-43-I-PNL-RNCI1                              2                0            0 DC-1-64-E-PNL-ARP                                2                0            0 DC-1-65-E-LC-PY11                                2                0            0 DC-1-65-E-UPS-IY11                                2                1            3 DC-1-65-E-XF-TRY11                                2                1            1 DC-1-67-E-BT-BAT11                              2                0            0 DC-1-67-E-BTC-BTC11                              2                0            0 DC-1-67 -E-LC-PD15                              2                0            0 DC-1-96-E-PNL-1 CC1                              2                0            0 DC-1-96-E-PNL-1VB1                              2                0            0 DC-1-96-E-PNL-HSP                                2                0            0 DC-1-96-M-PNL-PM-101                            2                0            0 DC-1-96-M-PNL-PM-103                            2                1            1 DC-1-96-M-PNL-PM-185                            2                0            0 DC-1-96-M-PNL-PM-79                              2                0            0 DC-1-99-I-PNL-RN01A                              2              0            0 Note: Pages include applicable portions of the checklists and LBE required by EPRI 1025286 guidelines.
 
y Equipment
 
== Description:==
Makeup Water Transfer pump Location:        Building:  ~                            Floor EI. 1QQ                    Room, Area: 1-MUWTP1 Manufacturer, model. Etc, Ins1ructlons for Completing Checklist This checklist may be used to document the results ofihe 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 judgements 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 Iiem one of the 50% of SWEL Items requiring such          N verification)?
y
: 2. Is the anchorage free of bent. broken, missing or loose hardware?
No bent, broken, or missing hardware.
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxIdation?
No corros;on observed on pump anchorage
: 4. Is the anchorage frEie of visible cracks In the concrete near the anchors?                                                  y No cracks observed
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item Is      N/A one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                  y InteractIon Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y
.No credible Interaction sources
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to            y collapse onto the eqUipment?
Piping and conduit are welf supported overhead. No masonry walls.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Expansion Joints on both Inlet and outlet pIping. Conduit to pump goes through flex.
: 10. Based on the above seismIc Interaction evaluations, Is equipment free of potentially adverse seismIc interaction effects?                                                                                                                      y Other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          y eqUipment?
Firewater manual valve hand wheel chains are restrained to prevent swinging. Overhead firewater pipe with sprinkler head Is restrained so interaction causing a spray Is unlike/y.
Page 1 of 8
 
Status:
EQlliPITlentlDNo                                      ~
Equipment
 
== Description:==
Makeup Water Transfer pump Comment:
Evaluated by:
DKN~
                                                    ~
                                          ;i¥L~
SMM Page 2of8
 
Status:  Y Equipment
 
== Description:==
ASW Cross-Tie valye Location:        Building:  ~                            FloorEL ill                      Room, Area: 1:ASf1 Manufacturer, model. Etc.      Urnilorque 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comm~nts.
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the item one of the 50% of SWEL Items requiring such          N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
All attached'anchors appear to be In good condition.
y
: 3. Is the anchorage free of corrosion that is mOfe than mild surface oxidation?
No corrosIon Is visible.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  NfA
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the Item is      N/A one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations. Is the anchorage free of potentially adverse seismic conditions?                  y
. (
No adverse conditions were Identified.
InteractIon Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                        y No credible sources were seen that could impact soft targets.
: 8. Are overhead eqUipment. distribution systems, ceiling tile.s, and lighting, and masonry block walls not likely to          y collapse onto the equipment?
Overhead lighting and conduIt were adequately secured to prevent collapse.
: 9. Do attached lines have adequate f1exibllity to avoid damage?
y All attached lines used flexible conduit.
: 10. Based on the above seismic Interaction evaluations, Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y No seismic interaction issues were identified.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page 1 of 10
 
Status:      Y Equipment
 
== Description:==
ASW Cross-Tie Valve Comment:
Approximately 30" from operator to center of ....30*' pipe.
Evaluated by:      KTM
                                                  .'~
                                                    ~/~
                                                              .. ~ . Ib/ 1&/.J.OI::l..
SMM7£~
Page 2 of 10
 
y Equipment ID No DC-O.,18-M-PP-FP1                                                            Equipment Class:    § Equipment
 
== Description:==
Fire pump No 1 Locatfon:        Bulldlng:  ~                            FloorE!. ill                  Room. Area: ll::Eei Manufacturer, model. Etc,
    .Instructions for Completing Checklist                                .
ThJs checklist may be used to document the resUlts of the .seismio Walkdown of an item of equipment on the SWEL. T~e space below each of the followlng questions may be used to record {ha results of judgements and flndlngs. Addltronal space is provided at the end of this ~hecklist for documenting other comments.
Ancboraglit
: 1. Is the anchorage configuration verifioation required (i.e. Is the Item one of 1he 50% of SWElltems requiring such          y verification)?
y Ii
: 2. Is the anchorage free of bent, broken. missing or loose hardware?
.1      All anchorage Is In good condition.
y I    3. Is the anchorage free of corrosion that is more than mUd surface oxidation?
Anohorage is free of corrosion. Top of s/cid and pump couplings show signs of corrosion. No struoture/lssues were Id(mtlfied but Operations Shift Foreman was notified about the leaking couplings and mechanical corrosion.        .        y I  4. Is the anchorage free of visible cracks in the concrete near the anchors?
Some minor spallfng of the ooncrete was seen. No cracks In the concrete were found. No Issues were {denlflled.
I  5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies jf the item Is one of the 60% for which an anohorage cOlifiguration verlficatlon is required.)
y I:
! \
1 (8) 1/2" anbhQtbolts (4 on each side of the pump). 318" fillel Welds attaching the channel seotion to the sf<Id.
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adver~e seismic conditions?                  y Anohorage appears to be free of adverse seis(11/c cpndillons.
I Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y I    No credible sources were identified that could impact soft targets.
: 8. Are overhead equipment, distrIbutIon systems, ceiling tiles, and lighting, and masonry block walls not likely to            y collapse onto the equipment?
Ughts and overhead dueling are adequately seoured. No masonry walls or other overhead equipment nearby.
to
: 9. Do attached lines have adequate flexibility avoiq damage?
y Altached lines appear to have adequate flexibility.
: 10. Based on the above seismic interaction evalu~tions, Is equipment free of potentially adverse seismic interaction effects?                                                                                                                      y No issues were Identified.
other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could ~dversely affect the safety function of the          Y equfpmen~?
Page 1 of22
 
y Equipment 10 No PC-O-18-M-PP-EP1                                                          Equipment Class: Q EquIpment
 
== Description:==
Fire pump NQ 1 Comment:
Active (eaks on balli pomp coupHngs. Shift foreman notified. Also, there Is visIble corrosion on the pump couplings. See Attaohment No. 1 for disposition.
Evaluated by:    KTM
                                              ~~
I
                                                                                                                          '1 I
I Page 2 of 22
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit Q.
Equipment No. DC-0-18-M-PP-FP1                                                          Attachment 1, Page 1 of 1 Licensing Basis Evaluation Issue:
Corrosion noted on the inboard and outboard pump seals of Firewater Pump 0-1 on the 115' elevation of the U-1 Aux. Building.
Evaluation:
The corrosion is on the exterior face of the seal. There is no active leakage from th~ corrosion area (i.e. the exposed face of the seal); therefore, the corrosion is not impacting the ability of the seal to perform its function.        .
SAPN has been prepared for seals to be inspected by a corrosion eng ineer, and a plan developed based on the results of that inspection.
Notification Required: Yes (50515811)
Evaluated by: _...sS2.!!M!!!!M
                            ~_---z~:::.::.....d.~~~::::::::"'~_---!::'::.f...L~~==-_ _ _ __ _ _ __
Reviewed by: __~P~VV~H~__~~~~~~~~~_~La~~_ ____________
 
y 10 No                                                                        Equipment Class:    .&sect; Equipment
 
== Description:==
Diesel Fuel Oil Transfer pump No 0-2 Location:          Building: CPSE                        Floor EI. 85                  Room, Area:  O-DFOVAULT Manufacturer, model, Etc.
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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the item one of the 50% of SWEL items requiring such          N verification )?
y
: 2. )s the anchorage free of bent, broken, missing or loose hardware?
The "J" bolts were in good shape and the nuts were secured on top of an inverted channel section.
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
Anchors ok, channel connections mild corrosion see pictures (at the interface between the channel and the concrete). See Attachment No.1 for disposition.                                                                              y
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is      N/A one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y The J bolts appear to be in good shape.
Interaction Effects
: 7. Are soft targets free trom impact by nearby equipment or structures?                                                        y No falling objects could impact the metal braided flex hoses.
: 8. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to            y collapse onto the equipment?
The light fixtures, conduits are aI/ well anchored and secure. No masonry walls. The room is a confined space underground concrete vault.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Metal flex hoses are connected to the pump suction and discharge.
: 10. Based on the above seismic interaction evaluations, is eqUipment free of potentially adverse seismic interaction effects?                                                                                                                      y PP is well secured with adequate protective coating} no significant corrosion. The concrete vault with sealed cover environment does not appear to be conducive to excessive corrosion.
other Adverse Condjtions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
There are no spatial interactions and the pump can safely perform its safety function.
Page 1 of 12
 
Status:  Y I=nl!linl"l"lQlnt 10 No                                                                    Equipment Class: .Q Equipment
 
== Description:==
Diesel Fuel Oil Transfer Pump No. 0-2 Comment:
Inspection was performed on 0-2 vault due to availability of the confined space at this dale.
Evaluated by:
Page 2 of 12
 
Power 1 1 Ucens ing Basis Evaluation Issue:
Coatings damage (bubbled 'l coatings) was noted on the side of the inverted steel channel supporting the pump, indicating corrosion underneath.
Evaluation:
The structural integrity of the support is maintained as there are no visible signs of severe steel degradation affecting structural capacity of the supporting steel.
Recommendation:
As outlined in the below SAPN, engineering recommends that the steel channel (topside and underside surfaces) be inspected and coatings repaired as appropriate.
Notification Required: Yes (50511275)
Evaluated by: _J;;SillMruML_ _ _~~~.Le.~~;::::;;=::s~_~~rp:&#xa3;L:!~_ _ _ _ _ __
Reviewed by: __~N~J~____~~~~~~~~~~____~~~~UL~_____________
 
Status:    Y
------------------------------------------------------------------------~-------------
                                                                                                                .Q Equipment
 
== Description:==
Diesel Fuel Oil Transfer Pump No 0-2 Filters Location:          Building: CPSE                                    Floor EI. 85          Room, Area:  O-DFOVAULT Manufacturer, model, Etc.
Instructions for Completing Checklist This checklist may be used to dovument 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the item one of the 50% of SWEL items requiring such          y verification)?
y
: 2. Is the anchorage free of bent, broken. missing or loose hardware?
No visible Damage to 4 studs
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?                                                Y Some mild surface corrosion on south side of base plate.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  y Welded studs to plate that's welded to embed. No visible cracks noted.
S. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is        Y one of the 50% for which an anchorage configuration verification is required.)
Anchorage to embed plate per deSign drawings.
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y The welded studs are secure in place and the base plate is welded to embedded plates which appear to be in good condition (ie Free of visible cracks).
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                      y No potential for falling or swinging objects. The instrument gauges and tubing connected to the wall behind the filter are seismically secured and no adverse interactions were noted.                                                  '
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to          y collapse onto the equipment?
The components connected to the vault ceiling (eg conduits) were a/l weft anchored and seismically secure.
: 9. Do attached lines have adequate flexibility to avoid damage?
y The system Is seismically qualified.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adVerse seismic interaction effects?                                                                                                                      y No sources nearby. A two inch pipe on west side is securely tied down. There is about 1/4" clearance; however the two components are rigidly anchored with insignificant relative displacement.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
The filter housing appears to be in good structural condition with no adverse spatial interaction.
Page 1 of 10
 
Status:  y Equipment Class: Q Equipment
 
== Description:==
Diesel Fuel Oil Transfer Pump No. 0-2 Filters Comment:
Inspection was performed on 0-2 vault due to availability of the confined space at this date.
Evaluated by' Page 2 of 10
 
Fnll ilno"n.Dlrlt 10 No Equipment
 
== Description:==
AEW Lead Temperature Element Location:            Building: ~                          Floor EI. lli                    Room, Area: .1:I&sect;11Z Manufacturer, model, Etc.
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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e, Is the Item one of the 50% of SWEL items requiring such          N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
No bent, broken, or mIssing hardware.
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
No corrosion on the anchor bolts
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                  Y No cracks In the concrete were obseNed
: 5. Is the anchorage configuration consistent with plant documentation? (Note; This question only applies If the Item Is      N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations. Is the anchorage free of potentially adverse seismic conditions?                  y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y The structural steel and grating protect the temperature element
: 8. Are overhead eqUipment, distribution systems, celling tiles, and lighting, and masonry block walls not likely to            y collapse onto the equipment?
The temperature element is shielded by the structural steel. Conduit and piping are well supported.
: 9. Do attached lines have adequate flexibility to avoid damage? .
y Conduit is supported close to the box mounted on the concrete wall and where the eTement enters the pipe. The eJement has a flex secUon adjacent to the pipe.
: 10. Based on the above selsmfc Interaction evaluations, Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page 1 of 10
 
y Equipment
 
== Description:==
 
Comment:
The anchor bolts are galvanized. No corrosion observed.
Eyaluated by:
Page 2 of 10
 
Status:    Y Eqlllprrlent Class: .&sect; Equipment Descripilon:        AEW Pump No 1 (Iurbjnecprlyen) location:        Building:  ~                          Floor EI. 100                  Room. Area:    1-AEWP1 Manufacturer, model, Etc.
Instructions for Completing Checklist This checkiist may be used to document the results of the Seismic Waikdown of an item of equipment on the SWEL. The space below each ofthe following questions may be used to record the results of judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le. is the Item one of the 50% of SWElltems requiring such            N verification )1 y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
All anchor bolts are present and In good condition.
y
: 3. Is the anchorage free of corrosion that is more than mild surface ox1dation?
No corrosion is present.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  y Very mild spaJling has occurred on the concrete pedestal. No structural Issues. No cracks in concrete or pedestal.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the item is      NfA one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the abpve anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y No Issues were identified.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y No credible sources could Impact soft targets.
: 8. Are overhead equipment, distribution systems, ceiling tiles} and lighting, and masonry block walls not likely to            y collapse onto the equipment?
Overhead piping and cable trays looked adequately secured. Lights are wall mounted. No ceiling tiles or brock walls In the area.
: 9. Do attached lines' have adequate flexibility to avoid damage?
y All attached lines appear to have adequate flexibility.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects? '                                  .                                                                                  y No issues were identified.
Other Adverse ConditIons
: 11. Have you looked for and found no other seismic conditions that could adVersely affect the safety function of the            Y equipment?
Page 1 of 15
 
Status:    Y IDNo                                              !'-
Equipment
 
== Description:==
AFW pump NQ 1 (Iurblne~Driven)
Comment:
Evaluated by'  KIM ~            _
                                          /~~-        iO/i5/Jo\~
Page 2 of 15
 
FnBllt"I'n~lnt 10 No Equipment
 
== Description:==
 
Location:          BuUding:  Awilliao!                    Froor Ef. 1QQ                    Room, Area:  1o AFWP2 Manufacturer, model, Etc.      Louis Allis COGS SQQHP Motor: Byron Jackson 3XSX9E-9SIG pymp Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Walkdown of an Item of equipment on the SWELt The space below each of the following questions may be used to record the results of Judgements and findings. Additional space is provided at the end ofthls checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e, is the Item one of the 50% of SWEL Items requiring such                        Y verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
<\
I
!  3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
y
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                                y Some minor spalling or chIpping of concrete pad around perimeter. Judged to be structurallY Insignificant.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: Thls question only applies If the Item Is                      Y one of the 60% for which an anchorage configuration verification Is required.)
(6)  1*114~ anchor bolts through skid
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                                y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                                      Y Some lube oil reservoirs at ends of pump and motor and some flexible tubing may be considered soft targets.
Judged to be well protected and no visible sources that would fa/l to Impact them. One of the lube all reservoirs Is I    spac9d about an Inch away from 8 conduit support - Judged to be sufficient spacIng since conduit support and pump are very rigid. An eleetrles/lnstrument Is In contact with a smaJl manual valve (FW-1-173). Both are rigidly supported and differentIal motion between the two Is judged unlikely.
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to I
y I  collapse onto the equIpment?
Some 2" threaded FP piping overhead -judged to be well supportec/ by U-bolts generally at about 6'-8' centers on welded steel brae/cets. No credible sources to impact and damage FP pIping to cause flood or spray.
I'
: 9. Do attached lines have adequate flexibility to avoid damage?
y                I
: 10. Based on the above seismic Interaction evaluations. Is equipment free of potentially adverse seIsmic Interaction
    ~~                                                                                                                                          y Otber Advers! Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                        Y equipment?
Page 1 of 18
 
Seismic WalkdolNl1 Checklist (SWC)                                Status:    Y Equipment ID No DC-1-03-M-PP-AFWP2                                            Equipment Class: &sect; Equipment
 
== Description:==
AFW Pump No.2 (Motor- Driven)
Comment:
Evaluated by:
lO*lh - l:L Page 2 of 18
 
y Equipment ID No Dc..1-03-P-VOH-EW~1-lCV~11Q                                                Eql.lipITlsnt Class:  Z Equipment
 
== Description:==
AEW pymp pisoharge to Steam Generator level Control Valves Location:        BuIlding:  ~                            Floor EI. ill                    Room. Area:      1-lCY-11Q Manufacturer, model, Etc.      ASeO NH92WaOQ2E2RND304)QQ{OQX18 Instructions for Completing Checkrlst ThIs checklist may be USed to document the results of the SeismIc Walkdown of an Item o.f eqUIpment on the SWEL The space below eaoh of the following questions may be used to record the results of judgements 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.s! is the Item one of the 60% of SWEL Items requiring such          N verification)?
y
: 2. Is the anchorage free of bent, broken, missIng or loose hardware?
y
: 3. Is the anchorage free ot corrosion that Is more than mild surface oxIdatIon?
: 4. Is the anohorage free of visible cracks In the conorete near the anchors?                                                  NlA
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the item is      N/A one of the 50% for which an ~nchorage configuratIon verification fs required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentl~lIy adverse seismic conditions?                  y (n'tractlon Effects
: 7. Arfj soft targets free from Impact by nearby equipment or struotures?                                                      y No nearby credible Interaotlon sources.
: 8. Are overhead eqUipment, distribution systems, celling tiles, and lighting, and masonry block walls not likely to            y collapse onto the equipment?
: 9. 00 attached lines have adequate flexibIlIty to avoid damage?
y
: 10. Based on the above seismIc Interaction evaluations, Is equipment free of potentially adverse seismic lnteractlon effects?                                                                                                                      y Other Adverse Conditions
: 11. Have you looked for and found no other selsmfo conditions that could adversely affect the safety function of the          Y equipment?
One of the yoke support struiattaohment points appears to be slgnlficanlly corroded beyond Just surface corrosion.
Attachment 1 addresses the corrosion.
I I,
Page 1 of 8 I
I I
 
Seismic Walkdown Checklist (SWC)                                              Status:    Y Equipment 10 No DC-1-03-P-VOH-FW-1-LCV-110                                                    Equipment Class:  1 Equipment
 
== Description:==
AFW pump DIscharge to Steam Generator Leyel Control valyes Comment:
3/1 line reduced to 2" at valve. Supported within 18" of va/va with U-bolts. Operator Is supported Independently with a strut connected to steel structure. Not likely to be any sIgnificant differential displacement between pIpe anchor point and yoke anchor point on structure.
Evaluated by' Page 20f 8
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit..1.
.:quipment No. DC-1 P-VOH-FW-1-LCV-110                                                              Attachment 1, Page 1 of 1 Licensing Basis Evaluation Issue:
One of the yoke support strut attachment points appears to be significantly corroded beyond just surface corrosion.
Evaluation:
Strut is associated with pipe hanger no. 1/43R (drawing no. 049302, sheets 50, 50A, 50B, and 50X) and is attached to the structural framing of the Pipeway Structure with a pin and welded lug (Item No. 6) ..
The hanger calculation (calculation no. H-1501, rev. 7, page 12) indicates that the qualification of this supported is based on similarity to hanger no. 1/37R (calculation no, 1-477, rev. 8). Ba'sed on the magnitude of the support load <<3501bs per calculation 1-477, page 11) and the stress interaction ratios, the loss in met~1 area due to the noted corrosioh is not significant. Therefore, the hanger is acceptable in its current degraded condition.
Notification Required: Yes (50508447)
Evaluated by:  ----bo"-
l  {~1~j&  -:=-.---,--(J_. -----l s    f-"-l-
                                                        " i""""'-------
L .o    ==-==------
____ g--tl_z,?-f-/~'~~_ _ __
Keviewed by:    _~~~!!E:..:..q,'~q...,
                                  ' ~ts=A-'"
                                        ' ~'.~-' _'5.:......Jt;=17~1_ _ _ _----=:;8"-+-1..::;....?4-.,.~11~z-~ _ _ _ _ __
 
Status:                          Y EQlllprrlsnt ID No                                                                                                                                                                        ....\1 ..... I-"',,"""IU\ClaS8: 1:.
Equipment
 
== Description:==
 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
* __ . _**** _ _ _ _ _ _ _
* _ _ **** _ _ . _ . _ _ _
* _ . _ _ _ ** _ . . . _  .. _ _ _ . _ . _ _
* _ _ _ _ _ _ . _ *. _ . . . . _ *
* ___ . . . _ _ _ _ _ _ _ _ _ _ _ _ . . - _ _ _ _ _
* _ *****
* w ........._ . . _ . _ *** _ ..... _ _ ..... _ _ *** _ . .
Location:              BuildIng: Auxiliary                                                                          FloorEI. ill                                                        Room, Area:                1-lCY115 Manufacturer, model, Etc.
Instructions for Completing Checklist to This checklist may be used 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e. is the Item one of the 50% of SWEL items requiring such                                                                                                                                              N verification)?
y
: 2. Is the anchorage free of bent, broken, missIng or loose hardware?
All attaching bolts are present and In good condition.
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
No corrosion Is present.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                                                                                                                                                    N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the Item Is                                                                                                                                          N/A one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seIsmic conditions?                                                                                                                                                        y No Issues were identified. There is approx. 3/4" clearance between strut on moior and diagonal brace and nearby conduit support. Judged adequate.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                                                                                                                                                              y No credible sources can impact soft targets.
: 8. Are overhead equipment. dIstribution systems, ceiling tifes, and lighting, and masonry block walls not likely to                                                                                                                                                  y collapse onto the equipment?
All overhead equipment and lights are adequately secured. No block walls or ceiling tiles in the area.
: 9. Do attached lines have adequate flexibility to avoid damage?
y All attached lines use flexible conduit.
: 10. Based on the above seismic interaction evaluations. is eqUipment free of potentially adverse seismic Interaction
~~?                                                                                                              .                                                                                                                                                  y No Interaction issues were identified.
Other Adverse Conditions 11 . Have you rooked for and found no other seismic conditions that could adversely affect the safety function of the                                                                                                                                                Y equipment?
Page 1 of 13
 
WalllU!o\lVll CtleCKlllst ('SWC)
Equipment Class:    Z Equipment
 
== Description:==
AFW pump Discharge to Steam Generator Level Control Valves Comment:
45" operator height to the center of the pipe. 2" diameter pipe at valve/pipe Interface and widens to 3" diameter pipe. Seismic bracing at top of yoke.
Evalyated by-        KTM                                          ~
                                                  ~ ~.___                                        \ol'S/~O\a..
SMM Page 2 of 13
 
Status:    Y Equipment 10 No DC-1-03-P-VOM-EW-l-lCV-1Q&sect;                                                    Equipment Class:          II Equipment Descriptton:                Turblne-Driyen AFW Pump plscharge tA Steam Generator Leye! Control VaJyes
* r* .. '-*******,**.*... - - - , . - - - - - - - - - - - - -_ _ _ _ _ _ _ _ _ _ **_* __ ** ____ - - - . . -- _ .....
Location:                    Building: Pipeway                  Floor EI. ill                Room, Area:          1-LCV-110 Manufacturer, model, Etc.              limitorque instruotions for Completing Checldist This checklist may be used to' document the results of the Seismic Wap<down of an item of eqUipment on the SWEL. The space below each of the follo~ing questions may be used to record the results of judgements and findings. Additional space Is provided at the end offhis checklist for~Qcumenting other commenls.
Anchorage
: 1. Is the anchorage configuraUon vorification required {1.(2}, Is the item one of the 50% of SWEllterns requiring such                N verification)?
y
: 2. Is the anchorage free or bent, broken, missing or loose hardWare?
All at/aohing bolts appeal'to be adequafely secured.
y
: 3. Is the anchorage free of corrosion that Is more than mUd surfaca oxidation?
Surface corrosion had already beM Identified and called for cleaning tIle rust and recoating the valve. Judged to beak.                                                                                                                              N/A
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?
I? Is ~e anchorage configuration consistent with plant documentation? (Note: Thfs question only applies if the Item Is                N/A one of the 50% for which an anchorage conflguration verification Is reqUired.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                          y No Issues were identified.
InteractioQ Effects
: 7. Are soft targets free from Impact by nearby eqUipment or structures?                                                                y Soft targets appear to be free from impaot by nearby equipment and structures.
: 8. Are overhead equipment, distribution systems, ceiling liIesl and lighting, and masonry block walls not likely to                    y collapse onto the equipment?
Notl1lng Is likely to collapse on the valve.
: 9. Do attached Jines have adequate flexibility to avoid damage?
y All attached lines use flexible conduit.
: 10. Based on the above seismic Interaction evaluations, is equipment free of potentially adverse seismic interaction E1ffeots?                                                                                                                              y No Interaction issues were found.
Qtber Adverse Conditions
: 11. Have you looked for and found no other- seismic conditions that could adversely affect the safety function of the                  Y eql,lipment?
r                                                                                                                                  Page 1 ofl1  I r
I
 
y Equipment Class:    .a Equipment
 
== Description:==
Turbine-Driven  8EW Pump DIscharge to Steam Generator level Control VarVes Comment:
3" line reduced to 2" Eli valve, Valve is 11IskJng at about 2 drops per mInute near the yoke. SFM notified. See Attaohment 1 for disposition.
Evaluated by:
Page 2 ofl1
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Powe'r Pl ant, Unit 1.
Equipment No. DC-1-03-P-VOM-FW-1-LCV-106                                                            Attachment 1, Page 1 of 1 Licensing Basis Evaluation Issue:
Unit 1 LCV-1 06 has a slow leak (1-2 drops per minute) from the valve stem/packing.
Evaluation of As-Found Condition SAPN 50492014 was prepared for this issue prior to the Fukushima seismicwalkdowns (June of 2012). It states that during a Section XI pressure test walkdown, aux feedwater leakage was identified at the stem/packing area of LCV-1 06 on the Unit 1 pipe rack. This 1 dpm leakage was evaluated by operation in Task #2 and determined to not impact the function of the valve. This notification was .
. updated with information provided by the Fukushima walkdown team.
Fukushima seismic wqlk downs also identified that LCV-106 has a slow leak in SAPN 50510829. The leak rate appears to ha.ve remained stable since originally identified in June of 2012. Therefore, SAPN 50510829 was considered a duplicate and subsequently closed.
As discussed above, this condition does not impact the operation of DCPP.
Notification Required: No, since it was previously identified. However 50510829 was created and subsequently closed to avoid duplication.
Evaluated by: _....::S::..:..M:.:.:M~_~~~--cL-....;...;,.---:,"---~_ _ _---.,;.-+-L....I.-I~-=:.._ _ _ _ _ _ _ __
Reviewed by: _2P~W!...!* *.!....!H~---/.-4U~~-JI.~~~L..------L~--".Jl!..!!:=-_ _ _ _ _ _ _ __
 
status:    N EquJpment Class:  1 Equipment
 
== Description:==
Isolation Valve FCV-95 Control SWItch Coplactor (Supply to lurbine-Driven AFW pump)
Location:        Building: ~                              FloorEI.      lli                Room, Area:  1~LD30 Manufacturer. model, Etc.
Instructions fOT Completing Checklist
~.--.--.--"-~.-- .....-- --_._ ..
                                  "'--"-"-Thrs'checkii~tmay  be (med  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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Am.bprage
: 1. Is the ancf)orage configuration verification requJred (I.e, is the item one of the 50% of SWElltems requiring such        y verification)?
Y .
: 2. Is the anchol'age free of bent, broken, missing or loose hardware?
All anchor bolls appear to be in good condition.
y
: 3. Is the anchorage free of corrosion th~t Is more than mJrd surface oxidation?
No o?rrosion Is pre-sent.
: 4. Is the anchorage free of visible cracks In the concrete ne~r the anchors?                                                  Y No v{sfbla oraoks in tile wall behind the panel.
: 6. Is the ~nchorage configuration consistent with plant documentation? (Note: This question only applies If the Item is        N one of the 50% for which an anchorage configuration verification is required.)
(4) 3/8" as buill wa/J mounting ana/Jors at Gaah corner of the panel should be 1/2" aooording to il1& design drawings. (6) anchor bolts attaohlng the Interior mo.unllng plate lo the pane/Itself are consistent with plimt drawings. See Attaohmant 1 for disposition.
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y No Issues were Identified.
Interaction Effects
: 7. Are soft targets free from impaot by nearby equipment or structures?                                                        y No sofl targets exist.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to            y collapse onto 1he equipment?                                              .
Block walls in the room are properly restrained. Lights are rod hung. Overhead distribufion systems appear to be properly secured.
: 9. Do attached lines have adequate ffexibllity to avoid damage?
y Attaohed Jines appear to have adequate flexibility.
: 10. Basad on the above seismic Interaction evaluations. Is equipment free of potentially adverse seismIc Interaction effects?                                                                                                                        y No seismlo InteracUon Issues were identified.
Otber Adyerse Conditions
: 11. Have .you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page 1 of 14
 
Status:  N Equipment 10 No OC-1-04-L030                                                        Equipment Class:  1 Equipment
 
== Description:==
Isolation Valve FCV-95 Control Switch Confactot (Supply to Turbine-Driven AFW Pump)
Comment:
Evaluated by:
Page 2 of 14
 
, Equipment No. DC.. 1-04-LD30                                                          Attachment    Page 1 2 lIcensjng Basis Evaluation Issue:
Anohor bolt of Unit 1 FCV~95 control panel LD-30 is found to be 3/8'f(lfs which is smalfer than  what was qualified -- ~"eJ anchor bolts.
Evaluation:
Control panel LD-3D is safety related. The seismic evaluEition of LO-30 is documented in seismic legacy calc # ES-031. According to the original field walk down sketch, LD-30 was supported by four (4) .~n 0 anchor bolts. Therefore j LO-30 was'qualified by sejsmic t~sting with four (4) %11 0 ahchor bolts.
The as-found condition is evaluated and shown on Page 2. The results show that the as..found condition has si,gnificant margin. Therefore, the as...found condition has no adverse effects on the selsmic qualification of Unit 1 LD-30.                      '
Therefore, this condition does not impact the operation of DCPP.
Notification Required: Yes <<(0510947)
Evaluated by: ---1..~~~=-"=:"::~~W==---L:::.,f,..=...=:.L..!.......:==----'----------
Reviewed    by; __~~~~~~~~~______-L~~~WU~~________________________
 
==Enclosure:==
44x28x12. weight      = 190 Ibs
. Components: (see Sheet 28 and Attachment 18 sheets 18-3 & 18-4 of ES"31)
Description              Unit Weight (Ibs)    Qty        Weight (Ibs)
Terminal Block            2                    5          10 Starter & Contactor        10                    1          10 Fuse & Fuse Block        4                    1          4 Relay                    4                    2          8 Fuse & Fuse Block        1                    1          1.
Total weight  =190 + 33 =2231bs, Conservatively used 250 Ibs.
Floor Peak RRS: DOE/HE (Attachment 7. Sheet 3)
Static coefficient factor 1.5 is applied to consider multi-modes and multi-frequency effects.
Horizontal : 3.69 g*1.5 ~ 5.535 g Vertical: 1.73 g*1.5 = 2.6 g Calculated Anchor Bolt Forces:
Tension: (250*1*6)/(41*2)+( (250*5.535)2 +(250*2.6*6)2 +(250*5.53*5*6)2J=4081bS 4              41 *2              24*2 Shear: ~[250*(1+2.6)r +[250*5.535]2 14=4131bs Allowable: 3/8" anchor bolt, frc  = 5000 psi (drawing 054162 Page 11)
J P = 700 Ibs , S = 730 Ibs 513  (    )513    .
408      + 413      =.794 < 1.0 flOK"
( 700 )        730                  .
 
== Conclusion:==
318" 0 anchor bolts are adequate.
 
Status: Y EquIpment ID No        DC-1-04-P-V~MS-l-ECy..152                                              Equipment Class:  2 Eq!Jlpment
 
== Description:==
    . Siop Valye on Supply to Turbine-Driven AFW Pump No.1 Looation:          BuUdlng:  ~                            Floor EI. .1D.Q                  Room, Area: 1~AEWP1 Manufacturer, model, Eto.
Instructions for Completing Checklist .
This checklist may be used to document the results of the Seismio Walkdown of a.n item of equipment on the SWEL. The space below each of the followjng questions may 06 u~d to record the results of judgements and findings. Additional space is provided at the and of this checklist for doc\lmenting other comments.
Anphorage
: 1. Is the anchorage configuration Verification requited (i,e, is the Item one of the 50% of SWEL items requiring such        N verification}?
y
: 2. Is the anchorage free of bent, broken l missIng or loose hardware?
Anohorage to the pipeline appears to be adequate.
y
: 3. Is the anchorage.free of corrosion that Is more than mild surface oxidation?
Ancfl0rage is free' of cOlTosion that is more than mild surface oxidation.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                  N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is      N/A orie of the 60% for which an anchorage cohfiguration verlflcatJon Is required.)
6, Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                  y No issues were Identified.
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                        y No credible souroes could impact soft targets.
: 8. Are overhead equipment. distribution systems, celling tiles r and lighting, and masonry block walls not likely to          y collapse onto the equipment?
No oelling tiles or masonry walls in the area. Lights are wall mounted. Overhead pipIng and oable/conduit raceways Bppear to be adequately seour~d.
: 9. Do attached lines have adequate flexibility to avoid damage?
y No flexibility issues were Identified. All electrical Gonnecf;ons are made with flex conduit.
: 10. Based on the above seismic interaction evaluations, is equIpment free of potentially adverse seismic lnteraoUon effects?                                                                                                                      y No adverse seismic InteractlOIl effeots were found, Other AdverM Conditions
: 11. Have you looked fot and found no other seismic conditions that could adversely affect the safety function of the          y equipment?
Page 10f10
 
Status:      Y Equipment ID No    PC~1-Q4-P-V-MS-1-ECV-152                                                EquIpment Class: .Q Equipment
 
== Description:==
Stop Valye on Supply to Turbine-Driven AFW Pump No 1 Comment:
Pipe near DC-1-04-P-V-MS-1-FCV-162Is leaking. See Attaohment 1 fordisposilion. Operator height of the valve Is 32" ftom the center line of filS attaching pipe. Pipe Js heavily Insulated so tf?e diameter could not be measured. Pipe has about a 10" diameter with the insulation.          .
Eyaluated by:          KTM                                            Data'
                                            .----~~
SMM
                                            .--7L~                                        It/w/lz.-
Page 2 ofl0
 
Equipment                                                                                            1 1 Licensing Basis Evaluation Issue:
A leaking pipe was noted near DC-1-04-P-V-MS-1-FCV-152 ..
Evaluation:
The leaking pipe does not impact the structural integrity of the pipe valve and therefore no further evaluation is required.
Notification Required: Yes (50510687)
 
Status:  ~ N '91J1
-E-q-u-ip-m-e-n-t'-O-N-o--D-C-.-1.-0-4*-P-.V-O-A-.-M-S-.1-.-F-CV-.-4-1--------~---------E-q-u-ip-m-e-nt-C-Ia-ss-:--Z-----            'VMP~
Equipment
 
== Description:==
. MS Isolation Valves Location:          Building: ~                            Floor EI. ill                  Room, Area:    1-FCV-41 Manufacturer, model, Etc.      ~
,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 judgements and findings. Additional space is provided at the end of this ohecklist for documenting other comments.
Anchorage
: 1. fs the anchorage configuration verification required (l.e,ls the Item one ofthe 50% of SWEL Items requiring such            N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose har~ware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anohorage free of visible cracks In the concrete near the anchors?                                                N/A
: 6. Is the anchorage configuration consistent with plant documentation? (Note: This question oply applies If the item Is      NIA one of the 60% for Which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?
1.5" clearance between bottom of valve and floor grating below on north sIde of pipe. On south side, clearance is 112" at one location and 5132" at a second location. If main steam line moves Significantly the valve actus tor may impaot floor. See Attachment 1 for resolution.                        .
: 8. Are overhead equipment, distribution systems. ceiling tiles, and lighting, and masonry block walls not likely to            y collapse. onto the equlpt;lent?
Overhead floor grating may fall and Impact valve instrumentation but the grating is Judged fo be adequately secured so (ailing is unlike/y.
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic Interaotion ev~luations, Is equipment free of potentially adverse seismic interaction effects?
                                                                                                                              ~ "1((/
ly,,,Jf, Other Adyerse Conditions k..A
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the equipment?
y    "12.1/12--
Corrosion on valve body (not on actuator) was noted. Some flaking 'of corrosion product and pitting is visible.
MS/Vs are inspected per MP M-51.14. ObseNed corrosion ;s acceptable. See Atachment 2 for disposition.
Page 1 of 15
 
                                      'Seismic Walkdown Chectdist (S\(\IC)            status:
Equlpment"tO No pC-1-04-P-VOA-MS-1-FCY-41                    Equipment Class: Z EquIpment
 
== Description:==
MS Isolation Valves comment:
Eyaluated by" 1.
,. .. t
(
Page 2 of 15 .
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit _1 Equipment No. DC-1-04-P-VOA-MS-1-FCV-41                                            Attachment 1, Page 1 of 1 Licensing Basis Evaluation Issue:
Vertical clearance between bottom of valve actuators appears to be insuffici~nt to accommodate vertical seismic differential displacements of valve relative to Pipeway structure:
* 1. 5 in. to grating on north side
* 5/32 in to structural bolt'on south side Evaluation:
See discussion in Notification No. 50507811 .
This condition does not impact the operation of DCPP, but modifications are required .
Notification Required: Yes (50507376)
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit _1 Equipm ent No. DC-1-04-P-VOA.;MS-1-FCV-41                                                                                            Attachment g, Page 1 of 1 Licensing Basis Evaluation Issue:
Corrosion of valve body (not on actuator) may be significant. Some flaking ofcorrosion product and pitting is visible.
Evaluation:
A SAP notification search was performed, but this corrosion issue in not explicitly addressed.
However, Notification No. 50503202 indicates that the MSIVs are inspected per MP M-:51.14 (Generic Check Valve Inspection), So the routine inspections should determine if the corrosion.is sufficient to compromise valve integrity.
This condition does not impact the operation of DCPP.
Notification Required: No
_~W.=. . ;t. b"oJ,II..1tv t: =! :. .:. .: : .: . .....:. . .~R3.. r!~I~~
                                                                                ~.~/l~===_-      __                        _ 5_ _--::6~/':-.::.....
Evaluated by:
Reviewed by:      ---:~'1'94~r;q.~~~tr~
                                                '                    .                                    .......:G
:' . L
                                                                                                                        -_t'Wl              2 ....!...
:t.(-!.
                                                                                                                                                        /J-=::
                                                                        ~---:------..."..e.~:..L..::x.OL..17+-,-1---~/1rorA..::'Z-;....;..*t;4T--1--''2..~_ _
                                                                                                                                                              *Z:::..--_
 
Status:
Eqllfprrlent Class:  Z Equipment
 
== Description:==
 
location:        Building:  ~                            Floor Ei. 1M.                    Room, Area: .1::rul:a Manufacturer, model. Etc.      Copes Vulcan D-100-160 Instructions for Completing Checklist This oheckllst 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 resulls of judgements and findings. Additional space is provided at the end of this checklist for dooumenting other comments.
1, Is the anchorage configuration verification required (l.e, Is the Item one of the 60% of SWEL items requiring such          N verification)?
y
: 2. is the anchorage free of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidaUon?
: 4. Is the anchorage free of visible craCKS In the concrete near the anchors?                                                  y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the item Is      N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentIally adverse seismic conditions?                  y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y Position sensors/indicators are potential soft targets but they are Judged to be sufficiently far from adjacent struotures and components so that there are no credible Interaction sources.
: a. Are overhead equipment. distribution systems, celfing tiles, and lighting. and masonry block walls not likely to            y collapse onto the equipment?
Overhead is structural steel - not likely to collapse.
: 9. Do attached lines have adequate flexlbillty to avoid damage?
y Flexible rubber pneumatic lines and flexible conduit attached to air-actuators.
: 10. Based on the above seismic Interaction evaluations, Is equipment free of potentially adverse seismic interaction effects?                                                                                                                      y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          y equIpment?
Page 1 of 9
 
Seismic Walkdo\l\ll1 Checklist (SWC)                  Status:  Y Equipment ID No DC-1-04-P-VOA-MS-1-PCV-20                          Equipment Class: Z Equipment
 
== Description:==
MS Power Operated Relief Valves (10% bump)
Comment:
Evaluated by:
Page 2 of 9
 
Status:
EmllOf'flant 10 No                                                                                            .a Equipment
 
== Description:==
(solation Valves on Supply to Turbine*Priyen AfW pump locatIon:        Building:  ~                            Floor EI, ill                    Room. Area:  1-FCY*3Z Manufacturer, model, Etc.      LlmftorQue (SMB sIze.QQ)
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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments, Anchorage 1, Is the anchorage configuration verification required (i,e, is the Item one of the 50% of SWEL items requiring such        N verification)?
y
: 2. Is the anchorage fr~e of bent, broken, missing or loose hardware?
All attachIng bolts are In good condition.
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
Mild surface corrosion on valve body and attaching bolts. Judged to be ok.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                NfA
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item is      NfA one of the 50% for which an anchorage configuration verification Is required,)
6, Based on the above anchorage evaluations. Is the anchorage free of potentially adverse seismic conditions?                y No issues were Identified.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                      y No credible sources could Impact soft targets.
: 8. Are overhead equipment. distribution systems, celUng tiles. and lighting. and masonry block walls not likely to            y collapse onto the equipment?
Floor grating above the valve would prevent any overhead eqUipment from collapsfng on the valve.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Attached lines use flexible conduit.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y No Issues were Identified.
Other Adyerse Conditions
: 11. Have you lookeq for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page lof9
 
y EQlliprrlent 10 No                                      Eqlliprrlent Class: .a Equipment
 
== Description:==
 
Comment:
Eyaluated by' KTM                  ~
                                      ..... ' ) / - ~
                                        /l.../Y'l../ / ~        10/ IS/dO\~
SMM
                                      ~
Page 2 of9
 
Status:  Y z
Equipment
 
== Description:==
MS Safety ValVes Location:            Building: Auxiliary                                    Floor EI.                142                                Room. Area:  .1..:.ffil:.'I.
Manufacturer, model, Etc.
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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the item one of the 50% of SWEL Items requiring such                                                          N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
All attaching bolts are present.
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
Surface corrosion Is visible on the anchorage. Judged to be ok
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                                                                N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item Is                                                      N/A one ofthe 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                                                                y No Issues were Identified.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                                                                      y Overhead security grating protects the soft targets on the valve. Grating itself is adequately supported.
B. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                                                          y collapse onto the equipment?
NothIng Is likely to col/apse on the equipment.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Attached line uses a flexible conduit.
: 10. Based on the above seismic Interaction evaluations, Is eqUipment free of potentially adverse seismic Interaction effects?                                                                                                                                                                      y No issues were identified.
Other Adverse Conditions
: 11. Have you looked for and found no other seismfc conditions that could adversely affect the safety function of the                                                          Y equipment?
Page 1 ofa
 
Equipment Oesicriplion:
Comment:
Evaluated by*
KTM~~
lOI lSI a.ol~
SMM
                                      ~
Page 2 of8
 
y Eql;Jiplment
 
== Description:==
MS Safety Valyes location:        Building:  ~                            Floor EI. lli                      Room, Area:            1::IDl::a Manufacturer, model, Etc.      Maxjf!ow Consolidated Safety \/alye Dresser 370ZRA-RT21 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 Judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e, Is the Item one of the 60% of SWEL Items requiring such                                N verification )1 y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                                      N/A
: 5. Is the anchorage configuration consistent wIth plant documentation? (Note: This question only applies If the Item Is                            N/A one oithe 60% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                                        y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                                              y Instrument tubing may be a soft target but no credible or significant Interaction sources visible. It Is well protected from above by steel frame end corrugated steel roof. If containment structure spalls, concrete fragments may fallt but concrete Is ASME Inspeot/on item so spelling Is unlikely.
: a. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                                  y collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic interaction evaluations, Is equipment free of potentially adverse seismic Interaction
~~                      ,                                                                                                                            y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                                  Y equipment?
Page 1 of 7
 
Seismic Walkdovun Checklist (SWC)                              Status:  Y Equipment ro No OC-1-04-P-VR-MS-1-RV-3                                      Equipment Class: Z Equipment
 
== Description:==
MS Safety Valves Comment:
M Some minor corrosion on steel frame judged InSignificant.
by:
Eyaluated FFG
                                            ~--  .---t-fi
                                                      . -:p. .- - --._---
SMM              V            .
                                          ~--foe~
Page 2 of 7
 
Status:
~nlilinlmol"t ID No                                                                                            Z Equipment
 
== Description:==
MS Safety Valves Location:          Building:  ~                          Floor EI. .HQ                      Room, Area:    1-RV-13 Manufacturer, model, Etc.
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 oUhe following questions may be used to record the results of judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage confIguration verification required (Le, is the Item one of the 50% of .sWEL items requiring such      N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?*
All attaching bolts are present.
y
: 3. Is the anchorage free of corrosIon that is more than mild surface oxidation?
No corrosion Is present on the valve.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                              N/A
: 6. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item is    N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?              y No issues were Identified.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                    y Overhead security grating protects the soft targets on the valve. Grating Itself Is adequately supported.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to        y collapse onto the equipment? .
Nothing Is likely to col/apse on the equipment.
: 9. Do attached lines have adequate flexibili\y to avoid damage?
y
, Attached line uses a flexible conduit.
: 10. Based on the above seismic interaction evaluations, Is eqUipment free of potentially adver~e seismic Interaction effects?                                                                                                                    y No issues were Identified.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the        Y equipment?
lof8 i
 
Status:  Y I
Equipment
 
== Description:==
MS Safety Valves Comment~
Evaluated by:      KTM                ~
10/ ;6/d-otd-Page 2of8
 
z Equipment
 
== Description:==
 
Location:          Building: ~                            Floor EI.          lli                    Room, Area:                  .1.:ffil:a Manufacturer, model, Etc.      Max!flQw Consolidated
_.__............... -.-.-------- .. ------- .. -...... -.....-... ~--------    .. -......._---_.
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 judgements and findings. Additional space Is provIded at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (I.e. Is the Item one of the 50% of SWEL Items requIring such                                          N verlfication)1                                              .
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                                                  N/A
: 5. Is the anchorage configuratIon consistent with plant documentation? (Note: This question only applies If the Item Is                                        N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentiaJly adverse seismic conditions?                                                  y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or struotures?                                                                                        y Instrument tubing may be a soft target but no credible or significant interaction sources visible. Corrugated roofing above may fall but judged unlikely to Impact the tubing and unlikely to damage tubing If It Impacts. If containment structure spa/Is. concrete fragments may fall and Impact soft targets, but concrete Is ASME Inspection item so spalling Is unlikely.
: a. Are overhead equIpment. distribution systemsi ceiling tiles, and lighting, and masonry block walls not likely to                                            y collapse onto the equipment?
See  comments on question 7.
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic interaction evaluations, Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                                                        y Other Adverse ConditIons
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                                            Y equipment?
Page 1 of 9
 
Seismic Walkdown Checklist (SWC)                                    Status:  Y Equipment 10 No DC-1-04-P-VR-MS-1-RV-B                                            Equipment Class: Z Equipment
 
== Description:==
MS Safety Valves Comm~nt:
Evaluated by:
Page 2 of 9
 
Equipment
 
== Description:==
ecric Acid Storage Tank No 1 Leyel Transmitter
                                                                                                    ~'"                '
location:        Building: AuxUiary                          FloorEI. ill                                                        Room. Area: l-LT~102 Manufacturer. model, Etc.        Rosemoynt 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments. .                                                    .
                                                            *  " ........... , . . . . . . . . . or ***** 'r .' .                                                  _
Anchorage
: 1. Is the anchorage configuration verification required (I.e, is the item one of the 50% of SWEl items requiring such                                                    N verification)?
Transmitter has a flange with (4) bolts that is mounted to a pipe flange that is part of a valve/pipe run welded to the tank.                                                                                                                                                                  Y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                                                            N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is                                                  N/A one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                                                            y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                                                                  v
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                                                      y collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
y The stainless steel tubing runs in 8 straight line from the transmitter to the next support and thus has limited flexibility. However, it is judged that the relative movement between the transmitter and the top of the braced tUbing support, which Is bolted to the floor. will be minimal.
: 10. Based on the above seismIc interaction evaluations. is eqUipment free of potentially adverse seismic interaction effects?                                                                                                                                                                  y other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                                                    Y equipment?
Page lof8
 
Seismic Walkdown Chedclist (SWC)                          Status:    Y Equipment JD No DC.,;1-08-I-T-LT-102                                    Equipment Class: 18 Equipment
 
== Description:==
Boric Acid Storage Tank No.1 Level Transmitter Comment:
Evaluated by' I c~I/~/z.
10/18/WI0 Page 20fB
 
EQlJllprrlElnt ID No Equipment
 
== Description:==
 
Location:        Building:  ~                            Floor EI. !l5.                    Room. Area:  1-SWHE1 Manufacturer, model, Etc.      Atlas industria!
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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
AnchQrage
: 1. Is the anchorage configuration verification required (i.e. is the Item one of the 50% of SWEl items requiring such        y verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
All anchorage is present and In good condition.
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
No corrosion is present on the anchorage.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                y Paint overlaying concrete pedestal has started to crack. No visible cracks In the concrete itself.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item is      y one of the 50% for which an anchorage configuration verification is required.)
(4) 314" anchor bolts (2 on each side of the heat exchanger). One end of the heat exchanger is single nutted and the OPPOSite end is double nutted where the slotted holes are.
Ii a. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                y No issues were Identified.
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                      y No credible sources can Impact soft targets.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to          y collapse onto the eqUipment?
Nothing Is likely to collapse on the equipment.
: 9. Do attached lines have adequate flexibility to avoid damage?
y All attached lines appear to have adequate flexibility.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                    y No seismIc fnteraction Issues were Identified.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the        Y equipment?
loflS
 
y Equipment
 
== Description:==
Seal Water Heat Exchanger Comment:
Evaluated by'      KTM        Jla.tf4
                                            ~~.        lOIIS/ao\~
SMM Page 2 of 13
 
Status:    Y L::."I'l.lljJIIII:;U! Class: .&sect; Equipment
 
== Description:==
 
Location:        Building:  ~                          FloorEt. n                    Room, Area:              ~
Manufacturer, model, Etc.
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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le, Is the item one of the 50% of SWEl items requiring such                    y verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
All anchor bofts are present and In good condition.
y S. Is the anchorage free of corrosion that is more than mild surface oxidation?
Very mild surface corrosion had already been identified on the top of the skid (ref SAPN 50367401). Not a seIsmic concern.                                                                                                        .                    y
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?
Some of the concrete pedestal has spalJed off near the edge at west end. Not a seismic issue.
S. Is the anchorage configuration consistent with pla.nt documentation? (Note: This question only applies If the Item Is                y one of the 50% for whIch an anchorage configuration verification Is required.)
(16) 1" bolts are consIstent with plant documentation. 6 anchors'on each side ofthe pump and 2 on each end. See drawing 439519 for details.
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                          y No seismic concerns to note.
Interact[QD Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                                y No credible s~urces can Impact soft targets.
: 8. Are overhead equipment! distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                    y collapse onto the equipment?
* All overhead lighting and distribution systems appear to be adequately secured.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Attached lines appear to have adequate flexibility.
: 10. Based on the above seismic Interaction evaluations, Is equipment free of potentially adverse seismic interaction effects?                                                                                                                                y No seismic Interaction Issues.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                    Y equIpment?
No Issues.
Page 1 of 16
 
EQlliPrru:mt 10 No Equipment Del)crilotion:
Comment:
Includes subcomponent DC-1-08-M-PP-AP1.
Evaluated by:  KTM/y_
                                          /~~ )0/1 /;;>0' &
SMM
                                          ~
Page 2 of 16
 
Status:    Y EquIpment 10 No DC-1-08-M-PP-CCP3                                                            Equipment Class: Q Equipment Descrjption;        Cenldfugal Charging pump No Worman Location:        Building:  ~                            Floor EI. za                    Room, Area:  ~
Manufacturer, model, Etc.
Instructions for Completing Cheoklist This checklist may be usad to dooument the "results of the Seismic Walkdown of "an Item of equipment "on the SWEL The space below each of Ihe foflowlng questions may be used to record the results of judgements and findings, Additlona! space is provided at the end of this checklist (or documenting other comments.
                                                      ----;------------------~-------
Anchorag&
: 1. Is the anch(jrage configuration verifioation required (i.e, is the Item one of the 50% of SWEL items requiring such        y verification)?
y
: 2. Is the anchorage free of bant, broken, missing cir loose hardware?
All 12 anchor bolts are present and seourely fastened.
y
: 3. Is tha anchorage tree of corrosion that Is more (han mild surface oxidation?
Anchors are Goated and no oorros/on Is present.
: 4. Is the anchorage free of vls}ble cracks in the concrete near the anchors?                                                    Y Small cracks are seen on the .concrete pedestal on both sides of the pump. LHcsly due to shrlnJrags. See
" Attachment No. 1 for disposition.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the item Is        Y one of the 50% for which an anchorage confIguration verification Is required.)
(12) 718/1 anchor bolts attaching the skid to the concrete pedestal.
: 6. Bl::lsed on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic condUlons?                y See notes from question #4 and see Attaohment No, 1 for disposition.
fnteractlon r;;fects
: 7. Are soft targets free from impact by naarbyequipment or structures?                                                          Y No credible sources to Impact soft targets on the pump.
: 8. Are overhead equIpment. distribution systems, ceiling tiles. and lighting, and masonry block walls not Okely to              y collapse onto the eqUipment?
All overhead conduit and lighting are securely resfralned to either the ceiling are the walls.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Attached lines use flexible conduit,
: 10. Based on the above seismic interaotion evaluations, Is equipment free of potentIally adverse seismlo Interaction effects?                                                                                                                        Y No Interaction effects to note.
Olhar Agvgrse Conditions
: 11. Have you looked fOr and found no other seismic conditions that oould adversely affect the safety funotion of the            Y equIpment?                                                .
See Auxiliary 1-CCP3-AWC sbout Ore pipIng seismlo Interaction.
Page 1 of12
 
y Equipment In No DC-1~Q8~M-PP-CCP3                                Equipment Class: .Q.
EquIpment
 
== Description:==
Centrifugal Charging Pump No ]tlormal)
Comment:
Evaluated by"      KTM                    Date:
16/~S/~ld-Page 2 of 12
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit.1.
Equipment No. DC-1-08-M-PP-CCP3                                                                          Attachment 1, Page 1 of 1 licensing Basis Evaluation Issue:
Small cracks are visible on the concrete pedestal on both sides of the pump.
Evaluation:
According to Civil foundation drawing 4038877, twelve (12) 7/811 f2I anchor thread rods hold the pump and motor skid. extend through the concrete pedestal and into the concrete slab with at least 7" minimum embedment length and epoxy grout. Furthermore, #4 rebarhalrpins are Installed around the anchor rods (North..:south direction) as weH as four corners (East-west direction) of the concrete pedestal. Therefore, the small cracks have no signIficant effects on the structural Integrity of the concrete pedestal. Civil Calculation No. EQP-387 remains valid.
Therefore, this condition does not impact the operation of DCPP.
Notification Required: No.
Evaluated by:  --~..J,....;
                      . =-.: : . . .:-:. . :'?L
:~=:..-.+-~. . . . .; . . _-r-r-_ __f_ol_.2._~--Z-..6~i2_ _ __    _ __ _
Reviewed by:  _/...,..:I;'iJ4~~-.Pl'      ~~~b~~----+-,-=+q!---~_~                    ~f......=~~  ___- --
 
Sheet 1 of3 Status:
Seismic Walkdown Checklist Equipment ID No.          DC-I-OS-P-P-LlNE-1119                          Equipment Class 12    o. (Other)
" Equipment
 
== Description:==
SFP Fill Piping from Hold-up Tank Recirculation Pumps Location: Bldg.      Auxiliary        Floor EI. 140'              Room, Area    Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended)        =n/=a'----_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
" 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 the checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% ofSWEL items            N requhing such verification)?
: 2. Is the anchorage fi'ee of bent, broken, missing or loose hardware?                                            N/A This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, anchorage is not applicable.
: 3. Is the anchorage free of con-osion that is more than mild surface con-osion?                                  N/A
: 4. Is the anchorage free of visible cracks in the concrete near the anchorage?                                  N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only                N/A applies ifthe item is one of the 50% for which anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorag~ free of potentially adverse seismic                N/A conditions?
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                          NIA This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, .
seismic interaction effects are not applicable.
S. Are overhead equipment, distribution systems. ceiling tiles and lighting, and masonry block walls not        N/A likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                  NtA
: 10. Based on the above seismic interaction evaluations, is the equipment free of potentially adverse              NtA seismic interaction effects?
12 Enter the equipment class name from Appendix B: Classes of Equipment
 
Sheet 2 of3 Status: ~
Seismic Walkctown Checklist (SWC)
Equipment ID No.          DC-I-08-P-P-LINE-11l9                      Equipment Class 1.2    o. COther)
Equipment
 
== Description:==
SFP Fill Piping from Hold-up Tank Recirculation Pumps Other Adverse Conditions
: 11. Have Y(Jlt looked for and found no other seismic conditions that could adversely affect the safety              N/A function of the plant equipment?
This SWC applies to potential SFP rap'id drain-down through a pipe entering the SFP. Therefore, safety functions are not applicable.
Comments (Additional pages may be added as necessary)
This S'WC applies to potential SFp rapid drain~down t1n'ough the fill piping which enters the fuel transfer canal area of the SFP.
Drawing no. 500086 specifies that a 112" diameter anti-siphon hole be provided in the pipe at elev. 136'-3". Visual inspection verified the presence of the hole (see photo on sheet 3) and its approximate elevation Gust below the girth weld between the vertical section of the pipe and the elbow). Since the hole is located significantly more than 10' above the spent fuel assemblies stored in the SFP (approx. elevation 122'), rapid drain-down of the SFP inventory through this pipe is not possible.
.I;:valuated by:      WRH                                                                Date:        10/04/2012 DRC                                                                              10/04/2012
[2 Enter the equipment class n~me fi'om Appendix B: Classes of Equipment
 
Status:            Y 1
L;.l.Il.nVfI 11:l1I\ DescrIption:  Boric Acid Blender Inlet vatve Location:                Building: ~                            FloorEI. 100                Room, Area:  1-LCY112B Manufacturer, model, Etc.
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 JUdgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (I.e. Is the Item one of the 50% of SWEL Items requiring such                    N verification)?
y
: 2. Is the anchorage free of bent. broken, missing or loose hardware?
No broken, bent J ar missing hardware.
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?                                                          Y Na sIgnificant corraslon.
: 4. Is the anchorage free of visible cracks [n the concrete near the anchors?                                                              Y No cracks obseuved near pipe support anchors.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item Is                N/A one ofthe 50% fOfWhlch an anchorage configuration verification Is requir.ed.)
G. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                            y Interaction Effects
: 7. Are soft targets free from Impact by nearby eqUipment or structures?                                                                  y Only the air lines are likely soft targets. However no credible Interaction sources
: 8. Are overhead equlp~ent. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                      y collapse onto the equipment?
Conduit and piping are well supported. The fighting above has a safety chain.
: 9. Do attached lines have adequate flexibility to avoid damage?
The attached air lines have adequate slack..                                                                                            Y
: 10. Based on the above seismic InteractIon evaluations. Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                                  y Other Adye rsa Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                      Y equipment?
~ (
Page 1 of9 l
f-.
 
y i=rnlinl'Yl.e.nt ID No Equipment
 
== Description:==
Boric Acid Blender Inlet vaNe Comment:
1*FCV-110A is aline mounted cylindrlcalJy shaped AOV. The pipe is restrained by pipe supports vertIcally and In the transverse directJon on either side of the valve. The pipe is rastralned In the axial direction by a u-bolt connected to 8 stiff support anchored to the adjacent wall. This valve Is In the same room as valves 1*FCV*112B and 8104 Evaluated by:
Page 2 of9 i~*
                                                                                                                                            ~ ..
 
Status:  Y Equipment 10 No                                                                                                  ~
Equipment
 
== Description:==
Emergency Boraie Valye tgCharging PUOOJ,1 Location:        Building:  ~                              Floor EI. 1QQ                    Room, Area:    1~LCY112B Manufacturer, model, Etc.      UmUgrQue Actuator 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 to below each qf the following questlons may be used record the results of Judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e, is the Item one of the 50% of SWEL items reqUiring such          N verification)?
y
: 2. Is the anchorage free of bent, broken, mIssing or loose hardware?
No broken, bent, or missing hardware.
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
Some minor surface corrosion on the support pedestal. No Impact on the design capacity.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                    y No cracks observed near the pipe supporlanchors.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the Item Is        N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                  y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y The valve operator has a plastiC cover piece over the position Indicator. There are no credible Interact/on sources to impact this target. The valve operator touches the Insulation of the attached pipe. However. the operator and pipe are well supported and will have little or no relative displacement. Also the pipe Insulation Is very deformable.
Therefore, no Issues.
: 8. Are overhead eqUipment, distribution systems. ceiling tiles, and lighting. and masonry block walls not likely to            y collapse onto the equipment?
The overhead conduit Is well supported. The overhead lighting has a safety chain restraint. No masonry walls.
: 9. Do attached lines have adequate flexibility to avoid damage?
Attached pipe is supported adjacent to the valve and the valve operator Is braced.
Y
: 10. Based on the above seismic Interaction evaluations. Is equipmentfree of potentially adverse seismic Interaction effects?                                                                                                                        Y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety (unction of the            Y eqUipment?
Page 1of9
 
y.
Equipment DescrIption:    Emergency Borate Valye 10 Charging pump Comment:
The valve operator is braced to the floor. The operator has a pipe clamp which Is supported by a steel angle frame. The angle legs are welded to a steel pedestal which Is welded to a base plate. The operator support base plate has 6 - 112 Inch diameter anchor bolts.                          .
Evaluated by:          DKN                                      ~
__ I            11/ rtA DRe 10//1/ lOll--
Page:2 of9
 
Status:  Y Equipment
 
== Description:==
Volume Control Tank Outlet to Centrifugal Charging Pump Suction Valves Location:        Building:  ~                            Floor EI. 1QQ                          Room, Area:
Manufacturer, model. Etc. Anchor Valva Company body Llmlto[Que actuator Instructions for Completing Checklist This checkr.st 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 Judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e, is the Item one of the 50% of SWEL Items requiring such                          N.
verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?'
No broken; bent, or missing hardware.
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxldati(;m?
No significant corrosion.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                                  y No cracks observed near the support anchors.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item Is                      N/A one of the 50% for which an anchorage configuratIon verification is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                                  y Interaction Effects
: 7. Are soft targets free from Impact by nearby eqUipment or structures? .                                                                      y Power cable Is relatively protected under the adjacent pipe, Un/strot frame, and the operator. The small tubing Is also protected by the operator.
: 8. Are overhead eqUipment. distribution systems, ceiling tiles, and lighting. and masonry block walls not likely to                            Y collapse onto the equipment?
The nearby conduit Is well supported. The overhead light has a safety chain restraInt. No masonry walls.
: 9. Do attached lines have adequate flexibility to avoid damage?
Y
: 10. Based on the above seismic Interaction evaluations. Is eqUipment free of potentially adverse seismic Interaction effects?                                                                                                                                      y Other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                          Y equipment?
Page lof8
 
Status:
EQlllpITlsnt  10 No                                                                                            a Equipment Descriplion:      Volume Control Tank Outlet to Centrifugal Charging Pump Suction Valves Comment:
The valve operator Is restrained by a structural steel collar which is supported to the floor with two L4x4x3/8 vertical members. The L4x4s are bofted to a stiffened base plate. The base plate Is anchored to the concrete floor with 4 -
1 inch Hilti Kwlk Bolts. The pipe Is well supported adjacent to the valve. No significant re/ative displacements are expected between the pipe and operator.
Eyaluated by:        DKN                                            ~
__  ~~~~~+-~__ IDJ41 ORC Page 2 of 8
 
Status:    Y SI PUmp No. 1 Location:        Building:  ~                            FloorEI. !!&sect;                      Room. Area: .1:.&sect;.If.1 Manufacturer. model, Etc.
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 followrng questions may be used to record the results of judgements and findings. Additional space Is provided at*
the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (I.e. Is the Item one of the 50% of SWEL Items requiring such          Y verification)?
y
: 2. Is the anchorage free of bent, broken. missing or loose hardware?
All anchorage appears to be in good condition.
y
: 3. Is the anchorage free of corrosion that Is more ~han mild surface oxidation?
No corrosion is present
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  Y No visible cracks.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is        y one of the 50% for which an anchorage configuration verification Is required.)
(10) 5/8" anchor bofts are consistent with plant documentation. See drawing 443481 for details.
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                  y No adverse conditions were seen.
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                        y No credible sources are present to Impact soft targets.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting. and masonry block walls not likely to            y collapse onto the equipment?
No block walls in the area. Lighting Is ball and socket type to allow movement. HVAC duct anchorage appears to be adequate.
: 9. Do attached lines have adequate flexibility to avoId damage?
y All attached lines appear to have adequate flexibility.
: 10. Based on the above seismic Interaction evaluations, Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y No seismic interaction scenariOS were seen.
Other Adverse Condjtions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the            Y equipment?
No Issues.
Page 1 of 12 L
I~
 
EQlliOTT19nt ID No Equipment
 
== Description:==
 
Comment:
EValuated by: KTM    ~
                                      ~~  IO/lG*/~\~
SMM Page 2 of 12
 
Status:      Y Equipment
 
== Description:==
RWST to Charging pump Suction Valyes Location:        Building:  ~                              FloorEI.  ~                    Room, Area:    :I-FCY-3S5 Manufacturer, model. Etc.      Um!tQrgue (D-l2QO)
Instructions for Completing Checklist This checklist may be used to document the results oUhe 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 Judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.                                        -
Anchorage
: 1. Is the anchorage configuration verification required (i,e. Is the Item one of the 50% of SWEL Items requiring such              N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
AlJ attaching bolts are In good condition.
y
: 3. Is the anchorage free of corrosion that is more than mUd surface oxidation?
No corrosion Is present.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                    NfA
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item Is          N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentfally adverse seismic conditions?                      y The MOV Is seismically restrained in both lateral directions by struts. 2 struts attached to a steel flange restrain the valve In one direction and 1 strut attached to a 10'')(6'' box steel member.
Interaction Effects
: 7. Are soft targets free from impact by nearby eqUipment or structures?                                                            v No creC!ibJe sources were Identified that could Impact any soft targets.
: 8. Are overhead equipment, distribution systems, ceiling til(;)s, and lIghting, and masonry block walls not lIkely to              y collapse onto the equipment?                                      -
No overhead equipment Is likely to collapse on the valve. No ceiling tiles, block walls or overhead lighting In the area.                                                                                                        '
: 9. Do attached lines have adequate flexibility to avoid damage?
y All attached lines have flexible connections.
: 10. Based on the above seismic interaction evaluations, Is equipment free of potentially adverse seismic interaction effects?                                                                                                                          y No Issues were Identified.
Other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the              Y equipment?
Page 1 of 12
 
Equipment
 
== Description:==
 
Comment:
37'; from operator to center of 8" diameter pipe.
                                                    ~
KTM~~
Evaluated by' tOI f 5/ a.o\~
SMM
                                                ~
Page 2of12
 
Status:
Equipment
 
== Description:==
 
Location:                      Building:  ~              FloorEI. M                        Room, Area: 1.::S.I.f1 Manufacturer, model, Etc.                  UmitQrque 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 oithe following questions may be used to record the results of judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification requ1red (I.e. is the Item one of the 50% of SWEL items requiring such          N verification)?
y
: 2. Is the anchorage free of bent. broken, missing or loose hardware?
All attached bolts appear to be In good condition.
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
No corrosion Is present.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                  N/A
: 5. Is the anchorage configUration consistent with plant documentation? (Note: This question only applies If the Item Is      N/A one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                  y No adverse seismic conditions were seen.
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                        y No credible ~ources can impact soft targets.
: 8. Are overhead equipment, distribut10n systems. ceiling tiles, and lighting, and masonry block walls not likely to            y collapse onto the equipment?
All overhead equipment appears to be properly secured.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Flexible conduIt run into the motor operator. Sensor line attached to valve support not a seismic concern due to its light weight.
: 10. Based on the above seismic Interaction evaluations, is equipment free of potentially ad'verse seismic interaction effects?                                                                                                                        y No Interaction effects to note.
Other Adverse Cond[t!ons
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the            Y equIpment?
Nq/ssues.
Page 1 of 11
 
y EqlJliprrlent 10 No                                                                                                                a Equipment
 
== Description:==
81 pump Suction Valves from RWST Comment:
32 inch distance from middle of operator to piping. 6" pipe diameter.
Evaluated by' SMM Page 2 of 11
 
Seismi~        Walkdovun Checklist (SWC)                                              . Statu.s:    Y Equipment 10 No DC-1-10-M-HX-RHE1                                                                    Equipment Crass:      21
                      .Equipment DescrlP1loli:      RHR Heat . Exchang~r NO.1 Loea.lion:        Bujldlng:  ~                          . FloorEL ~                                Room. Area: .1:;B.!::!fl Manufacturer, model, Etc.
Instructions for Completing Checklist This c~ecklistin~y be used to document the results oHhe Seismic Wall<<:Jqwn.of an item of equipment on the SWEL. Th~ space .
below each of the following questions may be used.to reco(d the results of judgeril~nts, and findings. Ad,ditio'nal space is provided at the 'end of this checklist for documenting other comments.                    .                                                                .
Anchorage
: 1. Is the anchor?ge configuration verification required (Le, Is the Item one of the 50% of SWEL Items requiring such                        y verification)?                                                                                    .
y
: 2. Is th~ anchorage free of bent, broken, missing or loose hardw,ar~?
Afl ~nchorage, Is In good f;ondition.
y
: 3. Is the anchorage free of corrosion 1hat is more than mild s~rface oxi~ation?
No corrosion i$ present.
: 4. Is the ancl:)orage free .of ",isible craqks in the_concrete near lhe.arichors?                                                            y Soine ,sup9rfici~1 spa/ling of concrete n'ear bottom slab support. Not structurally significant.
: 5. Is the anchorage configuration consi~tent '#ith plant documen.t.at1on,? (Note: This que:;;tion only applies if the item Is                Y one of the 50% for which. an anchorage configurallon verification is required.)
(4) 1-1/4" ~nchorbQl.ts at the base, oflh(;J hea~ exchan,ger an,d horizontal reslrfjints at two locations are In$talled per t~e de~ai/~~~9wf1 in d~f}vvJngs451596 anq 4395~O
: 6. Based an the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                                y InteractIon Effects
: 7. Are soft ~argets free frorn Impact by nearby equipment or structures?                                                                    y The oniy soft target isa valve. at the top of the heat fi'xcf]gnger put ihe,te are no sources for interaction.
S. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                          y collapse onto the .equipment?                                '
No overhead equ;pment, distribution systemsl, ceiling liles, or lighting exists in the room. The room does not have bloct< Walls.
: 9. D9 attached lines have adequate flexibili(y to a.vold damage?
y
---..:.....- - - - 1 0:-B'aS"eLflYi'ffne aooye seismiC Interaction evaluations, Is equIPment free of potentially adverse seismic Interaction effect~?                                                                                                                                    y There are no potentiat adverse1nteractiqn effec'{s.
Other Adverse 9Qndjtjoris 11 . Have you looked for and found no other seismic conditions that could adyerselyaffect the safety funCtion of the                        Y ecjuipmenW Page 1 of 15
 
Equipment
 
== Description:==
BHR Heat Exchanger No.1 Comment:
KTM rZI    . .
                                              ~~ ~
                                                  . . ~_',. . . Date:
JOI~~/~t~
                                    --~~~~=-------~--
{o(-t-$(~/2-I I
I II I
II I
I!
I I
1.
i II
                                                                                              *1 Page 2 of15
 
Equllprru:mt 10 No                                                                          Equllpllumt Class: &sect; Equipment Del:icrilption:    RHR pump No.2 Location:        Building:  ~                            FloorEI. &sect;Q                      Room, Area:    1-RHRP2 Manufacturer, model. Etc.      Westinghouse VSW1 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments,
: 1. Is theanchor(3ge configuration verification required (i.e, Is the Item one of the 50% of SWEL Items requiring such        y verification)?
y
: 2. Is the anchorage free of bent, broken. missIng or loose hardware?
3 of the nuts on the north floor baseplate on the north snubber support frame are visibly loose. Confirmed on Drawing No. 049305 Sheet Set 25 that the anchors with loose nuts are abandoned In place. Acceptable as is.                  y
: 3. Is the anchorage free of corrosiqn that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                  y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item Is        y one of the 50% for which an anchorage configuration verification Is required.)
See Item 2 above.
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                  y interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y
: 8. Are overhead eqUipment, distribution systems,* ceiling tiles, and lighting. and masonry block walls not likely to          y collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic Interaction evaluations, Is equipment free of potentially adverse seismic interaction effects?                                                                                                                      y Other Adverse Conditions
: 11. Have you rooked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page 1 of 18
 
Seismic Walkdo\Nl1 Checklist (SWC)                Status:    Y Equipment 10 No DC-1-10-M-PP-RHRP2                            Equipment Class: &sect; Equipment
 
== Description:==
RHR Purim No.2 Comment:
Pump and base concealed by insulation.
Evalyated by'                            ~
to* (b- 12
                                                                                                  \ .
Page 2 of 18
 
Status:
EqlliplTlent Class: &sect; Equipment DescrIption:        RHR pumn SuctIon Yalves Location~        Building:  ~                            FloorE!. 13                      Room. Area: .1..:.&sect;ZOQA Manufacturer, model, Etc.      Umllorgue 5MB-O Instructions for Completing Checklist This checklist may be used to document the results ofthe 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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.                                                                  .
Anchorage
: 1. Is the anchorage configuration verification required (I.e. Is the Item one of the 50% of SWEL Items requiring such          N verification)?
N/A
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?                                              N/A
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  NfA
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the Item is      N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y
; i No issues were Jdentified.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y No nearby equipment or structures that can Impact the soft targets.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to            y collapse onto the eqUipment?                                      .
All overhead conduit lines are securely attached to the ceiling.
: g. Do attached lines have adequate flexibility to avoid damage?
y Flexible conduit runs into the vafve.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y No seismic Interaction Issues.
Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equIpment?
Page lof6
 
Status:
Equipment Class: .a Equipment
 
== Description:==
RHR Pump Suction Valves Comment:
Motor operator is 57" horizontal from center line of pipe. 14" pipe diameter.
Evaluated by:        KTM                                    ~
                                                  ~ ~~-M':                      ___      tb/15/~\~
SMM
                                                ~~~--
Page 2 of6 r
I
 
Status:
ECIIJImneU1f 10 No                                                                                  Class:    a Equipment
 
== Description:==
RHR Pump Recirculation Valyes location:        Building:  Awilliiml                    FloorEI. 62                      Room, Area:  1-FCV4641A Manufacturer, model. Eto.      lImltQrgue Instructions for Completing Checklist This checklist may be used 10 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 Judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the Item one of the 50% of SWEl items requiring such          N verification)?                                                                              .
Y
: 2. Is the anchorage free of bent, broken. missing or loose hardware?
No broken, bent or missing hardware
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?                                              Y No corrosion observed
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                  Y No cracks observed near the snubber anchorage
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item Is      N/A on~ ofthe 50% for Which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                y Interaction Effects
: 7. Are soft targets free from Impact by nearby eqUipment or structures?                                                      y No credible Interaction sources.
: a. Are overhead equipment) distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to          y collapse'onto the equipment?
Duct and conduit are well supported. The lighting Is conduit hung with a ball and socket connection at the ceiling.
No masonry walls. No Issues.
: 9. Do attached lines have adequate flexibility to avoId damage?
y Attached cables have adequate slack
: 10. Based on the above seismic Interaction evaluations. Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y Other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y eqUipment?
Page 1 of 11
 
Status:    Y EQtllPrrlentlDNo                                                                                        a Equipment
 
== Description:==
RHR pump RecIrculation Valves Comment:
1-FCV*641A has Its yoke restrained by two snubbers that Bre anchored to the same concrete wall. The aUached pIping Is well supported near the valve.
Eyaluated by:
Page 2 of 11 I
r-
 
y Eq~.UPlnelnt
 
== Description:==
RHR Pump Recirculation Valves Location:        Building:  ~                            FloorEI,    M Manufacturer, model, Etc.      Llmltofgue 5MB.QQ-1Q
                                                                                                                                              """          -~
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic WaJkdown of an Item of equipment on the SWEL. The space below each of the following questions may be used to record the results of judgements and findings. Additional space Is provided at the end of this checklist for documentrng other comments.
AnchQrage
: 1. Is the anchorage configuration verification required (i.e. Is the Item one of the 50% of SWEL Items requiring such                                                  N verification)?
y 2, Is the anchorage fre,? of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                                                          N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: ThIs question only applies If the item Is                                              N/A one of the 50% for which an anchorage configuration verlficatfon Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                                                          y Interaction Effects
: 7. Are soft targets free from rmpact by nearby equIpment or structures?                                                                                                y
: 8. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                                                    y collapse onto the eqUipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic Interaction evaluations, is eqUipment free of potentially adverse seismic Interaction effects?                                                                                                                                                              y Other Adverse Conditions
: 11. Have you looked for and found no other seismIc conditions that could adversely affect the safety function ot the                                                  y equipment?
Page 1 of 8
 
Seismic WalkdolNn Checklist (SWC)                Status:  y Equipment 10 No DC-1-10-P-VOM-RHR-1-FCV-641B                Equipment Class: ~
Equipment
 
== Description:==
RHR Pump Recirculation Valves Comment:
No seismic concerns.
Evaluated by:
Page 2of8
 
Equipment
 
== Description:==
SEPC Temperature Instrumentation Location:        Building:  ~                            Floor EI. .1QQ                    Room, Area:  1-SFPHE1 Manufacturer, model. Etc.      Dresser 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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments. .
AnchQrage
: 1. Is the anchorage configuration verification required (i.e, Is the Item one of the 50% of SWEL items requiring such        N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
No broken, bent, or m;ss!ng hardware.
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
No corrosion observed.
: 4. Is the anchorage free of*visible cracks In the concrete near the anchors?                                                N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item is      N/A one of the 60% for which an anchorage configuration verification Is required.)
Oonsistent with drawing DC-663230-140-1
: 6. *Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                y 1-TI-653 is a small line mounted instrument. No anchorage Issues.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                      y The gage Is a potential soft target, but there are no credible interaction sources,
: a. Are overhead equipment, distribution systems, ceiling tiles, and lighting. and masonry block walls not likely to          y collapse onto the equipment?
PA speaker Is anchored to the slab above. Overhead pendant light is hung with conduit. Conduit Is well supported. No credible Interaction sources.
: 9. Do attached lines have adequate flexibility to avoid damage?
y The Instrument is mounted directly on the pipe.
: 10. Based on the above selsmic interaction evaluations, Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y The adjacent shieldIng door is top restrained.
Other Adyerse Conditions
: 11. Have you looked for and found no other seIsmic cond ltions that could adversely affect the safety function of the        Y equipment?
Page 1 of 6
 
t:Qlllpnlsm ID No Equipment
 
== Description:==
SFPC Temperature Instrumentation Comment:
Evaluated by'    OKN ORC 2of6
 
y Equipment
 
== Description:==
 
location:          Building: ~                            Floor EI. iQ.Q                    Room, Area: 1*SEPHE1 Manufacturer, model, Etc,      Joseph Qat and Sons 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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Ancborage
: 1. Is the anchorage configuration verification required (I.e. Is the item one of the 50% of SWElltems requiring such          y verification)?
y
: 2. Is the anchorage free of bent. broken) missing or loose hardware?
No broken, bent, or m/ss;ng hardware.
y
: 3. Is the anchorage free of corrosIon that is more than mild surface oxidation?
No significant corrosion.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  y
: 6. Is the anchorage conffguratlon consistent with plant documentation? (Note: This question only applies if the Item Is      y one of the 50% for which an anchorage configuration verlficatiQn Is required.)
The anch9rage Is consistent with drawing 443222
: 6. Based on the above anchorage evafuations,ls the anchorage free of potentially adverse seismic conditions?                  y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                      y No soft targets.
: 8. Are overhead equIpment, distribution systems, ceiling tues, and lighting. and masonry block walls not likely to            y collapse onto the equipment?
Conduit Is supported. Nearby HVAC is braced. Connected piping Is well supported.
: 9. Do attached fines have adequate flexibility to avoId damage?
y
: 10. Based on the above seismic Interaction evaluations. Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      y The adjacent shielding door Is top restrained.
Qtber Adverse Condltipns
: 11. Have you looked for and found no other seIsmic conditions that could adversely affect the safety function of the          Y equipment?
Page lof8
 
Status:
EQI..I!PlTlent ID No                                                                  EmJionlent Class:      2.1.
Equipment
 
== Description:==
Spent Fuel Poo! Heat Exchanger Comment:
The heat exchanger Is supported by two steel saddles. Each saddle Is anchored to a concrete pier with 4 718 Inch p
bolts. The bottom of each bolt Is welded to an embedded steel plate anchored In the EJ. 100 ft concrete floor. One support permIts sliding In the long direction.
DK~~~
Evaluated by' ORe j}tQ*h Page 2 of8
 
Status:  Y EqLliprrlent Class: .&sect;
: 1 Equipment
 
== Description:==
 
Location:        Building:  ~                            Floor EL .iQ.Q                    Room, Area:    1*SfPp1 Manufacturer, model. Etc.      Goulds pumps Model 34Q5 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verIfication required (I.e. Is the item one of the 50% of SWEl items requIring such          y verification)?
y
: 2. Is the anchorage free of bent. broken, miSSing or loose hardware?
No broken, bent, or miSSing hardware.
y
: 3. Is the anchorage free of corroslon that Is more than mild surface oxidatIon?
No significant corrosion.
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                    y No cracks were observed near the anchors.
: 5. Is the anohorage configuration consistent with plant documentation? (Note: This question only applies if the Item Is        y one qf the 50% for whIch an anchorage configuration verj~cation Is required.)
The anchorage Is consistent with Drawing 443222
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y Interaction Effects
: 7. Are soft targets free from impact by nearby eqUipment or structures?                                                        y The pump has two small glass o//Ievelizers. However there are no credible Interaction sources.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to            y collapse onto the equipment?
The HVAC duct Is braced. The crane rail above the pump Is well braced. The conduit end pipe are well supported. Piping attached to the pump Is vel}' well supported.
: 9. Do attached lines have adequate :flexibility to avoid damage?
y
: 10. Based on the above seismic Interaction evaluations, Is eqUipment free of potentially adverse seismic interaction effects?                                                                                                                        y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that cou.ld adversely affect the safety function of the          Y equipment?
Page 1 of 9
 
Status:
Fnlllru'nAlnf 10 No                                                                        Equipment Class:  ~
Equipment
 
== Description:==
Spent Fuel pool pumps Comment:
The pump and motor are mounted to a common steel skid. The skid Is anchored to the concrete floor by 8 - 112 Inch bolts. The bolts are welded to steel insert plates in the floor. A 6 Inch concrete pad is placed between the EI.
100 floor and the pump skid. The anchor bolts are cast In the pad.
::n;r3t~
liyalualed by' 2of9
 
Sheetl Status:
Seismic Walkdown Checklist Equipment ID No.          DC-1-13-P-P-LINE-154                        Equipment Class 12    O. (Other)
Equipment
 
== Description:==
Suction Piping to SFP Heat Exchangers Location: Bldg.      Auxiliary        Floor EL ~14..l..!0~'_ __ Room, Area Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended) =n1'-"'a'---_ _ _ _ _~_ _ _ _ _ _ _ _ _ _ _ _ _ _ __
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 the checklist for documenting other comments.
Anchorage L    Is the anchorage configuration verification required (i.e., is the item one of the 50% of SWEL items          N requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                            N/A This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, anchorage is not applicable.
: 3.    [s the anchorage free of corrosion that is more than mild sutface con-osion?                                  N/A
: 4. Is the anchorage fi'ee of visible cracks in the concrete near the anchorage?
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only                N/A applies if the item is one of the 50% for which anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic                N(A conditions?
Interaction Effects
: 7. Are soft targets free fi'om impact by nearby equipment or structures?                                        NIA This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, seismiC interaction effects are not applicable.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not        NIA likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                  N/A
: 10. Based on the above seismic interaction evaluations, is the equipment free of potentially adverse              N/A seismic interaction effects?
12 Enter the equipment class name from Appendix B: Classes of Equipment
 
Sheet 2 of4 Status: ~
$ei$mic Walkdown Checklist (SwC)
Equipment ill No.        DC-1-13-P-P-LINE-154                      Equipment Class12      0 .. (Other)
Equipment
 
== Description:==
Suction Piping to SFP Heat Exchangers Other Adverse Conditions
: 11. Have you looked fOf ,and found no other seismic conditions that could adversely affect the safety                  N/A functiofiofthe plant equipment?
This SWC applies to potential SFP rapid drain-down through a pipe ~ntering the SFP. Therefore, safety functions are not applicable.
Comments. (Additional pages may be added as necessary)
This sWC applies to potential SF&#xa3;> rapid drain-down through the suction piping to the SFP heat exchangers, which exits the SFP near its south-we.st comer. The inlet to the pipe is throllgha screen/strainermounted flush with the surface of the. west wall of the is SFP. Drawing no. 500129 indicates tbat the centerline of this pipe at 'elevation 131'.;0". Visual inspection verified that the pipe exits the wall ofthe SFP from the Cask Washdown Area at approx. elevation 131' (see photo on sheet 3) and that the screen/strainer does not extend significantly below the water level in the SFP. Since the termination of the pipe inside the SFP is located significantly more t han 10' above the spent fuel assemblies stored in the SFP (approx. elevation 1221) , rapid drain-down of the SFP inventory through this pipe is not possible.
Evaluated by:        WRH                                                                  Date:        10/04/2012 DRC                                                                                10/Q4/2012 12 Enter the equipment class name from Appendix B*: Classes ofEquipmeht
 
Sheet't of3 Status:
Seismic Walkdown Checklist Equipment ID No.          DC-1-13-P-P-LINE-l 59                                Equipment Class 12    O. (Other)
Equipment
 
== Description:==
Return Piping from SFP Heat Exchangers Location: Bldg.      Auxiliary          Floor E1. . =. . 14..:. . :0=--'_ __ Room, Area  Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended) ""n/'-"'a'--_ _ _ _ _ _ _ _ _ _ _ _ _- _ _ _ _ _ _ __
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 the checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% ofSWEL items                N requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                                N/A This SWC applies to potential SFP rapid drain-down tlrrough a pipe entering the SFP. Therefore, anchorage is not applicable.
: 3. Is the anchorage free of corrosion that is more than mild surface COlTosion?                                    N/A
: 4. Is the anchorage free of visible cracks in the concrete near the anchorage?                                      N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only                    N/A applies if the item is one of the 50% for which anchorage configuration vetification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic                  N/A conditions?
Interaction Effects
: 7. Are soft targets fi'ee fi'om impact by nearby equipment or structures?                                          NtA This swc applies to potential SFP rapid drain-down tlrrough a pipe entering the SFP. Therefore, seismic interaction effects are not applicable.
: 8.  .AIe overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not            NtA likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                    N/A
: 10. Based on the above seismic interaction evaluations, is the equipment fi'ee of potentially adverse                NtA seismic interaction effects?
12 Enter the equipment class name from Appendix B: Classes of Equipment                              I l
 
Sheet 2 of3 Status; -Y-Seismic Walkdown Checklist (SWC)
Equipment ID No.          DC~ 1~ 13-P-P-LINE-159                    Equipment Class12          o. COther)
Equipment
 
== Description:==
Return Piping from SFP Heat Exchangers Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety                      N/A function ofthe plant equ'ipment?
This SWC applies to potential SFP rapid drain-down thi'ough a pipe entering the SFP. Therefore; safety function.s are not applicable.
Comments (Additional pages may be added as necessary)
. This SWC applies to potential SFP rapid drain-down through the return pipingfi'om the SFP heat exchangers, whic.hent~rs the SFP near itsUOlth-east corner. Drawing 11.0. 500086 $pecifies that a 1/2" diameter anti~siphon holebepi'ovided in the pipe at elev.
136'-3". Visual inspection vedfied the pl;esence ofthe hole (see photo on sl1eet 3) and its approximate elevation (just below the girth weld betwe.en the vertical section of the pipe and the elbow). Siri<;:e the bole is located significantly more than 10' above the spent fuel assemblies stored in the SFP (approx. elevation 122'), rapid drain-down of the SFP inventoiy through this pipe is not possible.
Evaluated by:      WRH                                                                      Date:      10104/2012 DRC                                                                                    10/04/2012 12 Enter the equipment class name from Appendix B: Classes of Equipment
 
She'et 1 of3 Status: ~
Seismic Walkdown Checklist Equipm~nt ill No.          DC-1-13-P-P-LINE-l080                          Equipment Class l2  O. (Other)
Equipment
 
== Description:==
Suction Piping from SFP Skimmer Location: Bldg.      Auxiliary        Floor E1. 140'                Room, Area  Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended)          =nJc.::a=--_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
Instructions for Completing Checklist This checklist may be used to document the results of the Seismic Wa1kdown 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 the checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e.) is the item one of the 50% ofSWEL items            N requiring such verification)?
: 2. Is the anchorage fi'ee of bent, broken, missing or loose hardware?                                            N/A This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP, Therefore, anchorage is not applicable.
: 3. Is the anchorage fi'ee of corrosion that is more than mild surface conoston?                                  N/A
: 4. Is the anchorage free of visible cracks in the concrete near the anchorage?                                  N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only                N/A applies if the item is one 'of the 50% for which anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic                NIA conditions?
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                          NtA This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, seismic interaction effects are not applicable.
: 8. Al'e overhead equipment, distribution systems, ceiling tiles and lighting, and masomy block walls not        NIA likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                  NIA
: 10. Based on the above seismic interaction evaluations, is the equipment free of potentially adverse              N/A seismic interaction effects?
it. ...
I 12 Enter the equipment class name from Appendix B: Classes of Equipment                            I I
 
Sheet 2 of3 Status: ~
Seismic Walkdown Checklist (SWC)
Equipment ID No.          OC-1-13-P-P-LINE-I080                      Equipment Class L2      O. COther)
Equipment
 
== Description:==
Suction Piping from SFP Skimmer Othel' Advel'se Conditions II. Have you lOQked for and found no other seismic conditions that could adv~rsely affect the safety                    N/A function offhe plant equipment?
This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, safety functions are not applicable.
Comments (Additional pages may be added as necessary)
This SWC applies to potential $FP rapid drain-down through the suction piping for one of the SFP skimmers, which exits the SFP oil its west side. The skimmer is maintained even with the surface ofihe SFP -inventOlY and includes a short length of flexible hose to permit the skimmer elevation to be adjusted (see drawing no. 500093). Drawing no. 500093 indicates that the centerline of this pipe is at elevation 138'-6". Visual inspection verified that the pipe exits the wall of the SFP at approx. elevation 138 ' (see photo on sheet 3 for typical configuration) and that the length of the flexible hose is not sufficient to ,allow the skimmer to sink more than several feet into the SFP. Since the lowest possible elevation that eQuId be reached by the skimmer inside the SF? is located significantly more than 10'above the spent fuel assemblies stored in the SFP (approx. elevation 122'), rapid drain-down of the SFP inventory through this pipe is not possible.
Evaluated by:        WRH                                                                    Date:      10/04/2012 ORC                                                                                10/04/2012 14 Enter the equipment class name from Appendix B: Classes of Equipment
 
Sheet 1 of3 Status:
Sll=/tm!::.lI'nll,r.: Walkdown Checklist Equipment ID No.                    DC-1-13-P-P-LINE-1l18                        Eql11iplmel1t Class l2 O. (Other)
Equipment
 
== Description:==
Suction Piping from SFP Skimmer Location: Bldg.                Auxiliary        FloorEl. -=-14.:..,:0_'_ _ Room, Area Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended) ~nJ~a~______________________
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 the checklist for documenting other comments.
Anchorage
: 1.          Is the anchorage configuration verification required (i.e., is the item one of the 50% ofSWEL items          N requiring such verification)?                            .
: 2.          Is the anchorage fi:ee of bent, broken. missing or Joost: hardware?                                        N/A This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, anchorage is not applicable.
: 3.          Is the anchorage free of corrosion that is more than mild surface corrosion?                              N/A
: 4.          Is the anchorage fi:ee of visible cracks in the concrete near the anchorage?                              N/A S,          Is the anchorage configuration consistent with plant documentation? (Note: This question only              N/A applies if the item is one of the 50% for which anchorage configuration verification is required.)
: 6.          Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic            NIA conditions?
Interaction Effects
: 7.          Are soft targets free from impact by nearby equipment or structures?                                      NIA This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, seismic interaction effects are not applicable.
: 8.          Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not      N/A likely to collapse onto the equipment?
: 9.          Do attached lines have adequate flexibility to avoid damage?                                              N/A
: 10.            Based on the above seismic interaction evaluations, is the equipment free of potentially adverse          N/A seismic interaction effects?
12 Enter the equipment class name from Appendix B: Classes of Equipment
 
Sheet 2 of3 Status: ~
Seismic Walkdown Checklist (SWC)
Equipment 10 No.          DC-1-13-P-P-LINE-l118                      Equipment Class 12      o. (Other)
Equipment
 
== Description:==
Suction Piping from SFP Skimmer Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety                    N/A function of the plant equipment?
This SWC applies to potential SFP rapid drain-down thi"ough a pipe entering the SFP. Therefore, safety functions are not applicable.
Com ments (Additional pages may be added as necessary)
T his SWC applies to potential SFP rapid drain-down through the suction piping for one of the SFP sk immers, which exits the SFP on its west side. The skinmler is maintained even with the sllrface of the SFP inventory and includes a shOtt length of flexible hose to permit the skimmer elevation to be adjusted (see drawing no. 500093). Drawing no. 500093 indicates that the centerline of this pipe is at elevation 138'-6". Visual inspection verified that the pipe exits the wall of tIle SFP at approx. elevation 138' (see photo on sheet 3 for typical CQrifiguration) and that the length ofthe flexible hose is not sufficient to allow the skimmer to sink more than several feet into the SFP. Since the lowest possible elevation that cotIld be reached by the skimmer inside the SFP is located significantly more than 10' above the spent fuel assemblies stored in the SFP (approx. elevation] 22'), rapid drain-down of the SFP inventory through this .pipe is not possible.
Evaluated by:                                                                                            10/04/2012 10/0412012 12 Enter the equipment class name from Appendix B: Classes of Equipment
 
Sheet 1 of3 Status:
Seismic Walkdown Checklist Equipment ID No.          DC-1-13-P*P-LlNE-1121                              Equipment Class 12  o. (Other)
Equipment Desctiption: Rerurn Piping from SFP Skimmer Location: Bldg.      Auxiliary          Floor El. ,.:..14..!...OO,,-'_ __ Room, Area Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended) ;.:.n/:..:;a=--_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
Instructions for Completing Checldist This checklist may be used to document the results of the Seismic Walkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results ofjudgments and findings. Additional space is provided at the end of the checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e., is the item one of the 50% ofSWEL items          N requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                            N/A This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, anchorage is not applicable.
: 3. Is the anchorage free of corrosion that is more than mild surface corrosion?                                N/A
: 4. Is the anchorage free of visible cracks in the concrete near the anchorage?                                  N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only                N/A applies if the item is one of the 50% for which anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage fi:ee of potentially adverse seismic              N/A conditions?
Interaction Effects
: 7. Are soft targets fi:ee from impact by nearby equipment or structures?                                      NIA .
This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, seismic interaction effects are not applicable.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not        N/A likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                N/A
: 10. Based on the above seismic interaction evaluations, is the equipment fi'ee of potentially adverse          N/A seismic interaction effects?
12 Enter the equipment class name from Appendix B: Classes of Equipment
 
Sheet 2 of3 Status: ~
S~ismic W~lkdown          Checklist (SWC)
Equipment ID No.            DC-1-13-P-P-LINE-I i21                        Equipment Class l2  o. COther)
Equipment Descl'iption: Rettir'n Piping from SFP Skimmer Other Adverse COilditiol1s HaveYOillool<:ed for and found no other seismic conditions that could advetsely affect the safety                    NIA fun,ction bf the plailt equipment?                              .
This SWC applies to potential sFP rapid drain~down thrOllgha pipe entering the SFP. Therefore, safety functions are not app.1icable.
Commelits (Additional pages maybe added aSJieCessaty)
Thi$ SWC applies to potential SFP rapid dram-down thl'ough one ofthe three Tetu111 pipes for the SFP skimmers, which enters the SFP on itseast slde. Drawing 110. 500086 indicates that the centerline of this pipe is at elevation 1371.;6". Visual inspection vedfied that the pipe enters the wall oftl~e SFP at approx. elevation 138' (see photo on sheet 3) . Since the elevation ofthis pipe is 10cated Sigilificantl), more thah 10' above the spent fuel assemblies stored 111 the SFP (approx. elevation 122i), rapid dI'ain-down of the SFP inventory through this pipe is notpossJble.
Evaluated by:                                                                                          10/04/2012 10/04/2012 12 Enter the ~quipll1ent class name fi'oin Appendix B: Classes of Equipment
 
lof3 Status:
Seismic Walkdown Checklist Equipment ID No.          DC-1-13-P-P-LINE-1122                            Equipment Class 12  o. (Other)
Equipment DescriptiDn: Return Piping frDm SFP Skimmer LDcation: Bldg.        Auxiliary        Floor E1. ..::...14..!...:O~'_ __ Room, Area  Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended) .e.:;nI~a=---_ _ _ _ _ _ _ _ _ _ _--,-_ _ _ _ _ _ _ _ __
Instructions for Completing Checklist This checklist may be used to. document the results Dfthe Seismic Walkdown of an item of equipment on the SWEL. The space belDw each Dfthe foHowing questiDns may be used to. record the results Dfjudgments and findings. AdditiDnal space is prDvided at the end of the checklist fDr dDcumenting Dther CDmments.
Anchorage
: 1. Is the anchorage configuration verificatiDn required (ie., is the item one Dfthe 50% ofSWEL items            N requiring such verification)?
: 2. Is the anchorage free Dfbent, broken, missing Dr IDDse hardware?                                            NJA This SWC applies to potential SFP rapid-drain-dDwn through a pipe entering the SFP. TherefDre, anchorage is nDt applicable.
: 3. Is the anchorage fi.-ee of corrosion that is more than mild surface corrDsion?                              N/A
: 4. Is the anchorage fi'ee of visible cracks in the CDncrete near the anchDrage?                                N/A
: 5. Is the anchorage cDnfiguratiDn consistent with plant documentatiDn? (NDte: This question only              NJA applies if the item is one of the 50% fDr which anchorage configuration verification is required.)
: 6. Based Dn the abDve anchorage evaluatiDns, is the anchorage free Dfpotentially adverse seismic              N/A conditions?
Intel'action Effects
: 7. Are SDft targets free fi.-om impact by nearby equipment Dr structures?                                      NIA This SWC applies to potential SFP rapid drain-dDwn through a pipe entering the SFP. Therefore, seismic interactiDn effects are nDt applicable.
: 8. Are Dverhead equipment> distribution systems, ceiling tiles and lighting, and masDnry block walls not      NtA likely to' colIapse Dnto the equipment?
: 9. Do. attached lines have adequate flexibility to aVDid damage?                                              NtA
: 10. Based Dn the abDve seismic interaction evaluatiDns, is the equipment free of potentially adverse            N/A seismic interaction effects?
i2Enter the equipment dass name from Appendix B: Classes of Equipment
 
Sheet20f3 Status: _ Y_
Seismic Walkdown Checklist (SWC)
Equipment ID No.            DC-l ~ 13-P-P-LlNE-1l22                      Equipment Class 12    O. (Other)
Equipment
 
== Description:==
RetuI'n .P ipingfi'oru SFP Skimmer Other Adverse Conditio lIS
: 11. Have you looked for and found no other seismic conditions thatcould adversely affect the safety                      N/A function of the plant equipment?
This. SWCappl.ies to potential SFP rapid dtain-downtmough a pipe entering the SFP. Therefore, safety functions are not applicable.                          .
COIilments (Additional pag~s may be added        a~ rt&#xa2;cessary)
This SWC applies to potet'itial SFP rapid drain~down thmugh one ofthetln'ee return pipes for the SFP s!c4nll1ers,whioh entets the SFP Qnits eastside, Drawiilgho. 500086 irtgicates th~t the centerline of this pipe is at elevation 137i.,.6"! Vis.ualinspection verified thatthe pip~ enters the wall of the SFP at approx. elevation 138' (see ph<:>to on sheet 3 for typical 'configuration). Since the elevation of this pipe is located significantly more thap 10' above the spent fiiel assemblie~ .stored in the SFP (appl'ox.
elevatioil 1~2'), l'apid drain-down 6ft4e SFP inventory throUgh this pipe is not possible; Evaluated by:        WRH                                          o                      Date:        l Q/04/2012 DRC                                                                                10/04/2012 12 Enter theeqriipment class name fi'om Appendix B: Classes of Equipment
 
Sheet  of3 Status:
Seismic Walkdown Checklist Equipment ID No.          DC-1-13-P-P-LINE-1123                          Equipment Class 12 Equipment
 
== Description:==
Return Piping for SFP Skimmer Location: Bldg.      Auxiliary        Floor El. .=. 14-=-.: 0=--'_ __ Room, Area Unit 1 Fuel Handling Area Manufacturer, Model, Etc. (optional but recommended) =11/:...=:a'----_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
Instructions for Completing Checldist This checklist may be used to document the results of the Seismic WaJkdown of an item of equipment on the SWEL. The space below each ofthe foHowing questions may be u,sed to record the results ofjudgments and findings. Additional space is provided at the end of the checklist for documenting other comments.
AnchOl'age
: 1. Is the anchorage configuration veIificati<?n required (i.e., is the item one of the 50% of SWEL items        N requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                          N/A This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, anchorage is not applicable.
: 3. Is the anchorage fi'ee of corrosion that is more than mild surface cOlTosion?                              N/A'
: 4. Is the anchorage free of visible cracks in the concrete near the anchorage?                                N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only              N/A applies if the item is one of the 50% for which anchorage configuration vetificaiion is required.)
: 6. Based on the above anchorage evaluations, is the anchorage fi'ee of potentially adverse seismic            N/A conditions?
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                        NtA This SWC applies to potential SFP rapid drain-down through a pipe entering the SFP. Therefore, seismic interaction effects are not applicable.
: 8. Are overhead equipment) distribution systems, ceiling tiles and lighting; and masonry block walls not      NtA likely to collapse onto the equipment?
: 9. Do attached Hnes have adequate flexibility to avoid damage?                                                NtA
: 10. Based on the above seismic interaction evaluations, is the equipment ft'ee of potentially adverse          NtA seismic interaction effects?
t~ ."
12 Enter the equipment class name fl.*om Appendix B: Classes of Equipment
 
Sheet 2 of3 Status: ~
Seismic Walkdown Checklist (SWC)
Equipment 10 No.            DC-l- I 3-P-P-LINE-1123                    Equipment Class 12      O. (Other)
Equipment Descriptlon: Return Piping for SFP Skimmer Otller Adverse Condit ions
: 11. Have. you looked fqt artd found no other seismic conditions that could adversely affect the safety                  NIA function of the plaflt equipment?
This SWC applies to potential SFP rapid drain-down throtlgh a pipe entel'ing the SFP. Therefore, safety functions are not. applicable. .
Comments (Additional pages may be added as necess~ry)
Thls SWC applies to potential SFF rapid drain-down through one of the three return pipes for the SFP skimmers, which enters the SFP on its east side. Draw'i ng no. 500086 indicates that the centerline of this pipe 'is at elevation 137'-6". Visual inspection verified that the pipe enters the wall of the SFP at approx. elevation 13 8' (see photo on sheet 3 for typical configuration). Since the .e levation of this pipe is located significantly more than 10' above the spent fuel assemblies.stored in the SFP (approx.
elevation 122'), rapid drain-down of the SFP inventory through this pipe is not possible.
Evaluated by:                                                                                            10104/2012 10/04/2012 12 Enter the equipment class name from Appendix B : Classes of Equipment
 
y Equipment ID No                                                                                          Equipment Class:          1 Eql.iipment Descriptio'rf:    SpeW Flffil popt pump Trans~r SWitches
                                        ---:-'----'--------"---~                    .... ". "~'-'-"
location:          Bu.ildlng: ~                                FloorEI. ..1QQ                          Room. Area:        .1::l..e.I:Ml.
Manufacturer. m'ociel. Et&#xa2;.
fnslruc\ioijs'ror Compl~trng Checklist This ohec.ldlst may b~ l!sed to docum~nt the res\Jlts 9f the S~ls11l1a Warkdown of an it~m of .equlpment Of! the SWEL. T~e .space below!3aoh of the following questions may be used. to record the results of judgements and findings. Additional space Is provIded at the end of this. checklist for documenting other comments.
AtrchQragt
: 1. i~ the atlchol'age conflgurat{on verfflcatlon reqUired (i.a~ Is the item one          of the 50% of SWEL It!!)ms requ!rlng such                N v~rffloaUon)?
y 2: 1$ the anC)hor~ge free ()f p~nt, pr~en. rj1!ssln~ or (oose hardware?
All anchots are:present and In (load condition.
y S. Is the anohorage. frae of oo.rrosion that Is 'more 'than mil4 surface OXidation?
No c:o;rosion Is present.
: 4. I.s the anohorage free of vislbte oraek,s In the concrete n~arthe anchors'?                                                                      y No crocks Ih fhe: Wall hear the anchbrs.
: 5. Is the ~nchor~ge confrgurati9n comrls~ent,r-'lth plant,docuO)entatlon? (Note: This'question'onlyapplies If the Uem.is                          N/A one oftl)e 50% forwhioh an anChQra(:J9 configuration verlflcatfQn'ls reqUired.)                    .
: 6. BS$etl Qn the abo~ anchorage eVEiluaiions. is the anchQrage fre~ of pot~niially adverse seismIc;: conditlom~?
(4}.anph()r .bolls secure th.~ 'pemF!1 to (h(! w~lI. TIlt) anchor bofts. are smEllIer Ih~n the ~rrespondlng p~neJ In ,unit 2 (LPI:I:.79). Thri .bolt diameters .are abo!.!t 318'~ note that ths' conflgutatlf)l)./s $/lghtly dlffi:m!JI)f -. (12 panel,s. mt;Jul1fe(l on uni~/ft!t. See' Attachment 1 [or disp~sjlion. Panel mount/nfl. tabs have ,<<ey.)1o!e slots at the top and open~ende(l s/6ts at bottom, Which batJnot resisf uplift ,08ds. See Attaohment.2 for disposition.                                                  .
InteragtJoD Effeots
: 7. Are so~ t~fgets' free ~om rr:np~ct b.y naarby e.qufp'nient or $tructures?                                                                        y No"oredibie SOl.Jfoes could impaot 8Qrt targets on th6 panfJl.
: 8. Ar~ QVE!'rhaad equipmen~! distribution systems, celfing tiles, and lighting, and masoriry block walls not likely to                              y con~ps~ ohtQ "the equipment?                                                                                                      .
OV9rIJeaq d(s.trlb/.!t(on systems 81)(1IightinO appear to be pro.p~rJy sec!(f$d. No r;:alling tOes (If'blook Walls In the area.
PA sp~aker over panel is adequately $9Gu~d.
: 9. DC? attaohed Jines have ac;leqliate flexib~IW'10 avotd d~mage?
y Attached Oiles and panel Eire secured*to the wall*
      . 10. Based on the above seismlo Interaotion evaluations, *Is equrpmen~ free of.potentiaUy 'f;idvarse seismfo rnteractiQn eff~ot~?                                                        .                                                                                  y
          -No !ssiJe$wsre IdMtifi()d.
      'ptb'",r AdVerse 9~ndtttQns
: 11. Have you looked for and found no other selsmfo condItions that could actversefy Qffect the safety (I,lnctlon of the                            Y eqlliptrlsnt?
( ...
Page lofl!
I' 1-
 
Status:  Y Equipment 10 No DC-1-13-SFPPTS1                                    quipmentClass: 1 Equipment Daseripiion:  sverit fuel Pool P!JIPR rU1!n~1&sect;r SW\tQbe&
Comment:
Evaluated by;                                  ~
tol ,;;)..-3-k~~~
Page 20fl1
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit .-L
"':quipment No. DC-1-1 3-SFPPTS I                                                                          Attachment 1, Page 1 of 1 Licensing Basis Evaluation Issue:
The mounting configuration for this panel is different than that used for the corresponding panel in Unit 2 (LPH-
: 79) and the expansion anchors have a sma/lerdiameter.
Evaluation:
Since this panel was not selected for anchorage configuration verification, and there is no DCPP requirement that the anchorage for corresponding components in each unit are the same, this is not an issue. The mounting for this type of electrical panel is specified on generic drawing no. 050030, which permits numerous variations of the anchorage fot such components.
Notification Required: No Evaluated by:  _. . . ;,W
                        . ~~
                            ~~~G<~&P            ~J~=--.--=------q~J1~'S~/.13_-------                L. , ;
Reviewed by:    --~-6JI!~..,e.
                            . ~;e;.~...::.
                                            .      ~  __  . _ _--,-_ _ _    ---'-(~a,!;....:~:;....
                                                                                              *~!Js-.z-=----------
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit ~
..:quipment No. DC-1-13-SFPPTSI                                                                        Attachment 6, Page 1 of 1 Licensing Basis Evaluation Issue:
The panel mounting tabs ha.ve* the following anchor bolt hole configUrations:
* Upper Tab: vertically oriented "key-hole" slots, with the anchor located at the top of the slot
* Lower Tab: vertically oriented, open-ended slots, with the anchor located near the mid-point of the slot.
This mounting configuration will not transfer upwards-acting vertical loading, which may impact the qualification of the anchorage.    .
Evaluation:
The vertical Hosgri Earthquake zero period acceleration values (panel is assumed to be rigid in the vertical direction) so ZPA is applicable) for this location (Auxiliary Building, between elev. 100' and 115') from DCM C-17 (Hosgri Response Spectra), Attachment H (Auxiliary Building) areas follows:
* Elev. 100': 0.6 g (Spectra ID No. H-AB-N-VR-100-09-01)
* Elev. 1151: 0.6 g (Spectra ID No. H-AB,"N-VR-115-09-01) 3ince the vertical acceleration is less them 1.0 g, the vertical seismic load will not exceed the dead weight, ~o
'there is no uplift. Therefore, the configuration of the slotted holes is acceptable.
Notification Required: No Evaluated by: ._  _~t~JL!JA.~&  ~~~            L. . : . . ~
                                                              ~~~e====-__ct.: . . l..L. . :/~
                                                                                          . i' I~/L~_______
Reviewed by:    --~~~        ' ----.:~
                                      ;. .'. .:~b~:::::::::::...;
                                                              .-* ____-.l.-I&1...:...A_~-:...:..!t_2-_ _ _ _ __      _ __
 
I::Ql.nplTient ID          No Equlipmlent
 
== Description:==
 
Location:                  Building: Turbine                Floor EI. aQ.                                      Room, Area: 1-CCWHE Manufacturer, model, Etc.                    Umitorgue InsJructions 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 juogements and findings. Additional space Is provided at the end of this checklist for documenting other comments .
                              ,                ".-.--------.,-----~      .. - .... -.-- ..... --"".--~ .. "'~.- --------------
Anchorage
: 1. Is the anchorage configuration verification required (i.e, is the item one of the 50% of SWEL items requiring such                      N verification)?
Pipe-mounted 30" butterfly IIslve between flanges. Yoke Is vety robust and operator height is 54" (horizontal).
y
: 2. Is the anchorage free of bent, broken missing or loose hardware?
l y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                              N/A
: 5. Is the anchorage configuration consistent with plant documentatIon? (Note: This question only applies If the Item is                  NlA one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                              y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                                    y
: 6. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                        y collapse onto the eqUipment?
Overhead piping, conduit, and junction boxes are well restrained.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Umited flexibility in eleatricalline, but it appears to be adequate.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                                  y Other Adverse Conditjons
: 11. Have you looked for and fOUnd no other seismic conditions that could adversely affect the safety function of the                      Y equipment?
Page 1 of9
 
Seisnic WalkdolMl Cheddist (S\IIC)                                  Status:  y Equipment 10 No OC-j-14-E-P-VOM-CCW-1-FCV-430                                Equipment Class: .&sect; Equipment
 
== Description:==
CCW Flow Control Valve No FCV-430 (CCW Header A and B Flow Control Valves Comment:
Evaluated by:
                                    ~R.~
KA
                                    --A~~~                              f Of::L 3. /!2-D r2- .
Page 2 of.9
 
Equipment Class:
Description; location:            Building: Turbine                                      FtoorEI. 85                                                                    Room, Area;                1-CCWHE Manufacturer. model, Etc.            leeds and Northrup Company 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 judgements and findIngs. Additional space is provided at the end of this checklist for documenting other comments.                                                                                                                                                  .
                                                                                            ._. * " ' * - - ; - - ..... _ . _ . _ . _ ......... 4.4 _ _
* _ _ _ . _ .  . _ ** _ **** _ _ _ _ _ _ _ _ " ' **** - . - _.... , _ ** ~.
AnchQrage
: 1. Is the anchorage configuration verification required O.e, is the item one of the 50% of SWEl items requiring such                                                                                                    N verification)?
The thermocouple is light in weight and is mounted on the CCW shell-side outlet line by a welded coupling and short sections of 1/2" threaded pipe.                                                                                                                                                                                  Y
: 2. Is the anchorage free of bent, broken, miSSing or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of viSible cracks in the concrete near the anchors?                                                                                                                                        N/A
: 5. 15 the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item Is                                                                                              NfA one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations. is the anchorage free of potentially adverse seismic conditions?                                                                                                            y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                                                                                                                  y There is about 3/8" clearance between the head of the thermocouple and an adjacent conduit (Un but the conduit is supported by clamps on either side.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                                                                                                      y collapse onto the equipment? .
: 9. Do attached lines have adequate flexibility to avoId damage?
y There are two electrical connections to the thermocouple both of which include rubber tube sections. There is limlled flex;b,7ily in these electrical fines, but it appears to be adequate.
: 10. Based on the above seismic interaction evaluations, is eqUipment free of potentially adverse seismic Interaction effects?                                                                                                                                                                                                                  y Other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                                                                                                    Y equipment?
( ...
Page lof.6
 
Seismic WaikdOlNll Checklist (SWC)                        Status:  Y Equipment 10 No DG-1-14-I-E-TE-6                                      Equipment Class: 19 Equipment
 
== Description:==
CCW Heat Exhanger Output Thermocouples Comment; Evaluated by:
Page 2of6
 
Location:                                                      Floor EL    85                  Room, Area:
Manufacturer, modeJ, Etc.
instructions                  Checklist This checklist may be used to                    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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
1, Is the              configuration verification                is the item one of the 50% of SWEL items requiring such        y verification)?
The CCW Heat Exchanger has (2) saddle                    one of which is fixed and the oiher sfiding. The stiffened sliding support has (3) 1-3/8" bolts located within the                      HX. The support is also stiffened at the outside and is  y secured by (4) additional 718 11 boltsThe fixed support is similarly anchored but has an additional axial brace on either side that stiffens the fixed support. The baseplate for the axial braces is secured by (8) 1-1/4 tt kwik-bolt expansion anchors.
: 2. Is the anchorage free of bent, broken,            or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?
The pedestal supporting the sliding support exhibits some deteriorization and spalling of the concrete on the west edge of the pedestal. For disposition see Attachment 1"
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is          y one of the 50% for which an anchorage configuration verification is required.)
Anchorage is consistent with Hosgri modification drawing 463683-1 and modification As Built drawing 061342 sheets 2 - 23.                                                                      .
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                    y Interaction Effects 7, Are soft targets free from impact by nearby equipment or structures?                                                          y No significant soft targets.
: 8. Are overhead eqUipment, distribution systems, ceiling tifes( and lighting, and masonry block walls not likely to              y collapse onto the equipment?
There is a reinforced masonry wall near the south end of the HX However the wall has additional support at the bottom and near the top.
: 9. Do attached lines have adequate flexibUity to avoid damage?
y Tube-side nozzles penetrate via control valves directly through the floor below and are connected by means of flexible joints. The shell~side piping is well supported.
: 10. Based on the' above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                        y
: 11. Have you looked for and found no other seismic conditions that could adversely affect the                function of the    y equipment?
of 23
 
N seismic Walkdown Checklist (SWC)              Status:      ~
Equipment 10 No DC-1-14-M-HX-CGWHE1                          Equipment Class: 21 - . -l',A U" t't .. ,~
                                                                                      -,- , J,le.Jt:- II /.-z.q!I-Z-Equipment
 
== Description:==
CCW He'iit,Excba~ger No.1 Comment:
Eva!J.1?te~ by:                          Date:
Ib/&#xa3;sj&#xa3;oIL.*
If)r~'3II~.
I i
II I
                                                                                                                      .. j I
I t
I Page 2 of 23
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit .1 Equipment No. DC-1 M-HX-CCW HE1                                                                                            Attachment 1. Page 1 of 1 Licensing Basis Evaluation Issue:
Minot concrete spalling W8S noted on the concrete pedestal associated with the support at the south end (sliding end) of the Heat Exchanger 1-1.
Evaluation:
The CCW Heat Exchanger, including its support pedestals, is Design Class I and Seismically Qualified. The configuration of the support allows for thermal growth of the heat exchanger in the
    . north-south direction, ' through the inclusion of slotted hol(3s at th'e}anchors (see drawing ho. 463683 and calculation no. EQP-366.1). Therefore, loading in the north-south direction is not applied to the concrete pedestal.
Since the spalled concrete is on thesDuth f~ct3 of the pedestal,and loading is hot applied in the north-south direction, the spalling will not affect the structural capacity of the concrete.
Therefore, this issue does not impact the structural integrity of the pedestal or the ability of the CCW Heat Exchanger to perform its design function durin.g or after an earthquake.
Recommendation:
Repair the spalling of concrete on the concrete pedestal.
Notification Required: Yes (50519.950)
Evaluated by:  _~KA:...!..---!...*A-=-~-=            * . ~=.;~::..:...
                                                                          ~~' !.:::!O~~~9c~~-..:. ._ _--.,;.,0--+'_'7_3_11--'-'2--,_ _ _ _ _ __
                                                                              =.
Reviewed by: _ _ _          U
                                  . .': . . l.~.q. . sJA
                                                      .c=~--1..:R;:;:,---Z
                                                                      ;. . JkJ.
                                                                              ~..:.--4~':::=-----'-l.;. ;.tJ. _l+-*'Z.-'3~1-1 '_,2 _
f ..
\.
 
y Equipment Class:  !l Equipment
 
== Description:==
CCW pump No 1 L.ocatfon:        Building:  ~                            FloorEI* .M                      Room, Area: 1.:CCWP1 Manufacturer, model. Etc.    ~
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 rollowlng questions may be used to record the results of judgements and findings. Additional spaca Is provided at the end of this checklist for dooumenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e. is the item one of the 50% of SWEL Items reqUiring such          y verification)?
y
: 2. Is the anchorage free of bent. broken, missing or loose hardware?
All anuhor bolls are present w;tfl no signs of damage.
y S. Is the anchorage free of corrosion that is more than mild surface oxidation?
All anchors are coated and in good condition.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  Y Grout does not extend past the botlom of (he base plate. No structur.allssues as a result of the missing grout. No visIble cracks present. Some excess grout overflowed onto the surface of the concrete at tile base of th~ pedestal.
5.ls the anchorage configuration consistent with plant documentation? (Note: This question only applies If the item is        Y one of the 50% for whioh an anchorage configuration verification Is required.)
There are (2) 7/8" diameter and (4) 1" diameter anohor bolts on skid, in accordanoo with design drawing 470789.
: 6. Based on the above anchorage evaluations, 1$ the anchorage free of potentially ad~rs6" seismic conditions?                  y No potentially adverse seJsmlc condiUons.
Interaction streets
: 7. Are soft tar~ets free from impact by nearby eqUipment or struotures?                                                        y Hanging chain from the overhead monorail could Impact a port target on the pump's motoJ; see photo on page 5.
Chain was recolfed around monoraJ7 to shorten the length and prevent possible seismio interaction. Suggest a change or modification to prevent falure Interactions after use. See Attachment 1 for disposition.
: 8. Are overhead eqUipment. distribution systems, oeiling tiles, and lighting, and masonry block walls not likely to            y collapse onto the equipment?
Overhead equfpment and lighting are seGured. Ughts have chaIns to ceilIng.
: 9. Do attached*llnes have adequate flexibility to avoid damage?
y All attachad lines applJar to have adequate flexibility.
: 10. Based on the above selsmlo interaot/on evaluations. Is equipment free of potentially adverse seIsmic interaction effects?                                                                                                                      y Soo quesllon 7 notes. No further issues.
Otbir Adyerse Conditions
                                  \
: 11. Have you looked for and found no other seismlo conditions that could adversely affect the safety function of the          y equipment?
I I.
II
! \...
Page 1 of 19 I
 
y Equipment ID N~ DC-1-14-M-PP-CCWP1                                      Equipment Class: &sect; Equipment
 
== Description:==
CCW Pump No. j Comment:
Includes subcomponent DC*1~20*M-pp~CCWAP1.
EvalUated by:    KTM
                                          ~~
Page 2 of19
 
Power Equipment No.      =..::::--:.....:.....:....:..:.:...:.....:.....-=-.::::...:..::...:..-..::.              Attachment 1,  1 1 Licensing Basrs Evaluation Issue:
Chains attached to a rigging hoist mounted on an overhead monorail were found In an arrangement that could cause them to swing into the CCW Pump                                                    Motor.
 
==Background:==
 
The hoist is mounted on the monorail number MS-3-1 t as shown in drawing 59652. It is in its desIgnated storage location directly south of CCWP 1-1, and Is restrained by angle dips on each side to prevent it rolling in a seismic event (in accordance with Section F of drawing 512482.) Note 1 of this detail states to "locate seismic holst stops on monorail where hoist chain are clear from Class I equipm"ent.tf Evaluation:
Immediate action was taken to recoil the chain on existing chain hangers on the holst, effectively decreasing the amount of chain hanging from the hoist in half. In this configuration, the chain is not long enough to swing into the pump. and the SISI concern is resolved.                                                  . .
Since the chain was re-hung in a configuration that prevents a potential seismic Interaction, there Is no impact on the ability of CCW Pump 1-1 to perform its intended function. Seismic Qualification of CCWP 1-1 remains valid.
Therefore, this condition does not impact the operation of DCPP.
Notification Required: Yes (50516011)
Evaluated by:    -_~~~::::b=-,(l!C.~~;+,,----_~...!....::...::..,L.L.:~=--_ _ _ _ _ __
Reviewed by: ____~~~~~~~~__---------L~~~~-------------------
 
EQlfiPITlent  10 No Eqtliprrlent
 
== Description:==
CCW Surge Tank Location:          Building: ~                            FloorEI. 163                      Room, Area:    1-CCWST1 Manufacturer, model, Etc.
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 jUdgements and findings. Additional space is provided at the end of this checklistfor documenting other comments.                ..
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the item one of the 50% of SWEL items requiring such Verification)?
y
: 2. Js the anchorage free of bent. broken, missing or loose hardware?
The CCW Surge Tank is supported on two stiffened saddle supports thatare welded to the tank shell through doubler plates. One of the supports is fixed and the other is a sliding support. The fixed support is anohored 10 the        y support pedestal by (6) 1-112" embedded bolts and through bolts. The fixed saddle is stiffened axially by structural members that run from the outside base of the support to the vertical center of the tank on either side. The sliding supporl is anchored by (4) 1-112" through bolts. The view of the anchor~ge is limited by a skirt that covers the lower half of the tank. Only a portion of the anchorage could be seen through the access doorway without entering the confined space. Horizontal displacement of the tank is.restrained by large structural side restraints located on both sides of the tank and at both ends. These side restraints are anchored to the roof slab and contact the tank at its vertioal center.
: 3. Is the anchorage free of corrosion that is more than mUd surface oxidation?
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                    Y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is        N/A one of the 50% for which an anchorage configuration verification is required.)
What could be seen of the anohorage is consistent with drawings 446511-1 and 463694-1.
: 6. Based on the above anchorage evaluations. Is the anchorage free of potentially adverse seismic conditions?                  y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                        y The tank is outside having no soft targets. All components located on the West side of the tank are well supported.
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to NlA collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
Y
: 10. Based on the above seismic Interaction evaluationst Is equIpment free of potentially adverse seismic interaction effects?                                                                                                                      y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page 1 of 16
 
Seismic Walkdo\M1 Checklist (SWC)                Status:    Y Equipment 10 No DC-1-14-M-TK-CCWST1                          Equipment Class: 21 Equipment
 
== Description:==
CCW Surge Tank Comment:
Evaluated by:
1~~~'2P/?
                                                                    /&deg;/19 {liJll Page 2 of 16
 
Status:    Y z
Equipment
 
== Description:==
CCW Heat Exchanger Flow Conkol yalye location:                  Building: ~                              FloorEr. ~                                Room, Area: 1.fCV*365 Manufacturer, model, Etc.
Instructions for Completing Checkrlst 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 Judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
_ _ _ _ _ 00 _ _
* _ _ _- - - - - - . * . _ - - - - -
Ancborage
: 1. Is the anchorage configuration verification requIred (I.e. is the Item one of the 50% of SWEL Items requiring such                        N verification)?
y
: 2. ts the anchorage free of bent, broken. missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                              N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the Item is                    N/A one of the 50% for which an anchorage conflguration verification Is required.)
: 6. Based on the above anchorage evaluations. Is the anchorage free of potentially adverse seismic conditions?                                y Interaction Effects
: 7. Are soft targets free from Impaot by nearby eqUipment or structures?                                                                      y
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                          y collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic Interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                                    y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                        Y equipment?
Page 1 of 11
 
Seismic Walkdown Checklist (SWC)                                                        Status:    Y Equipment 10 No DC-1-14-P-VOA-CCW-1-FCV-365                                                EqIJipment Class:        Z*
Equipment
 
== Description:==
CCW Heat Exchanger Flow Control Valve
-~-~ .,,----      '--'- -- -------.------- -                  ....... _-_.... ........
                                                                              ,        ~ . ---      ..- - .- .......
Comment:
No seismic concerns.
Evaluated by:                                                          Date:
10 ' {q ~  12-(. ..
Page ~ of 11
 
Sheet Status:
Seismic Walkdown Checklist Equipment ID No.                                                          Equipment Class l2    O. (Other)
Equipment
 
== Description:==
Return Piping from Make-Up Water Transfer Pump Location: Bldg.      Auxiliary          Floor EI. 1401              Room, Area    Unit 1 Fuel Handling Area Manufacturer~ Mode], Etc. (optional but recommended)            ~n!~a,--_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
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 the checklist for documenting other comments.
Anchorage I. Is the anchorage configuration verification required (i.e., is the item one of the 50% ofSWEL items          N requiring such verification)?
: 2. Is the anchorage free of bent, broken, missing or loose hardware?                                            N/A This SWC applies to potential SFP rapid drainftdown through a pipe entering the SFP. Therefore, anchorage is not applicable.
: 3. Is the anchorage free of cotTosion that is more than mild surface corrosion?                                N/A
: 4. Is the anchorage :fi.*ee of visible cracks in the concrete near the anchorage?                              N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only                N/A applies if the item is one of the 50% for which anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic              N/A conditions?
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment OJ' structures?                                        NIA This SWC applies to potential SFP rapid dt'ain-down through a pipe entering the SFP. Therefore, seismic interaction effects are not applicable.
: 8. Are overhead equipment, distribution systems, ceiling tiles and lighting, and masonry block walls not        NtA likely to collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?                                                NtA
: 10. Based on the above seismic interaction evaluations, is the equipment fi'ee of potentially adverse            NIA seismic interaction effects?
12 Enter  the equipment class name from Appendix B; Classes of Equipment
 
Sheet 2 of 4 Status: ~
Seismic Walkdown Checklist (SWC)
Equipment ID No.            OC- I-16-P* P-LINE':2242                  Equipment Cla,SS12      o. (Other)
EquiPlnentDescription: Return Pipmg from Make-Up Water Transfer Purnp.
Other Adverse Conditions
: 11. Have you looked for and founcl no other seismic conditions thClt could adversely affe.ct the safety                N/A function of the plarit equipment?
This SWC applies to potential SFP rapid drain-down through a pipe entel;ing the SFP. Therefore,
        ;gafety functions are not applicable;                          ,
'Comments (Adqitional pag~s may be added as necessruy)
This SWC applies to poteritial SFPrapidqrain-downthtough the tetutn, pipe fi'orn the Make-Up Water TnHlsfer Pump,which eriteYs the SFP*at its ,s outh end. This pipe crosses over the top of the concrete wall v/hichseparates the SFP from tl1e Cask W(ishdownArea (CWA) (see photo on sheet 3), The opeil end ofthe pipe is located above the watei' surfac~. in the SFP, so rapid dtaindown via s~ction through this pipe is not possible.                    .
Evaluated by:.        WRH                                                                    Date:      10/04/2012 ORC                                                                                10/04/2012 12 Enter the equipment class name from Appendix B: Classes of Equipment
 
y EquIpment to No        DC~1~1Z:M-PP-ASP1                                                                Equipment Class:    &sect; Equipment
 
== Description:==
ASW PUmp No 1
-----------~----------                                                  ...- .. -" .. -.- ..      ..
                                                                                            --~.,...,-----"--...,.---~
Location:        Building: Intake                        Floor EI. =.a..1                              Room! Area:  .:1.:ASe1 Manufacturer, mode!. Etc.
Instructions for Completing C~ckJist This checklist may be used to document the results of the SeismIc W~lkdown of an item of equipment on the SWEL. The space below each of the following questions may be used to record the results 9f Jltdgements and findings. Additional space is provided at the end of this checklist for docum.enting qther comments.
Anc:horage
: 1. Is the anchorage configuration verification required {i.e, is the item one of the 50% of SWEL items requiring such                  y verification}?
y
: 2. Is the anchorage free of bent, broken, mIssing or loose hardware?
There Is no free, bentl broken, missing or loose hardware in the anchorage.
y
: 3. Is the anohorage free of corrosion that is more than mild surface oxidation?
Outer (8) J-bofls shows some corrosion. Sao Attachment 1 fordisposifion.
: 4. Is the anchorage (ree of visible cracks In the conorete near the anohors?                                                            y No vfslbfe cracks were seen In the concrete near the anchors.
: 6. Is the anchorage configuration consistent with plant documentation? (Note: this question only applies If the item Is                  y one of the 50% for Which an anchorage confIguration verification is required.)
The anc/lorage Is consistent with plant dOGum~ntation. (6) 1-114" bolts are present on the bottom base plate. (12) 1 114" bolls on the top base plate are present. Lateral supports at the top of the pump are (2) struts attached to w
welded embeds (1 in each lateral directIon).
: 6. Based on the above anohorage evaluations. Is the ancho~age frae of potentially adverse seismlo conditions?                            y Int~ractiQn  Elfec,s 7, Are soft targets frae from impact by nearby equipment or structures?                                                                  Y Open hook on light fixture could cause light to impact soft target on the pump. See AUachmenl2 forcDsposition.
: 8. Ara overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                      y collapse onto the equipment?
No overhead Blool( walls or ce;ting tiles in the area. There is an open hook on one of tile light fixtures, the light ;s judged to be inoapable of 'Jumping ll out of the hook based on the maximum vertical spectral aoca/eratJon at tha anchor points.
: 9. Do attached lines have adequate flexibility to avo1d damage?
y A/J attsched lines appear to have adequate flexibIlity.
: 10. Based on the above seismic interaction evaluations. Is equipment free of potentially adverse seismic interaction effects?                                                                                                                                y No credible interaction effects were identified. See notes from quastion 8 for more delalJ.
glher Adverse Conditfons
: 11. Have you rooked for and found no other seismio conditions that could adversely affect the safety function of the                    Y equipment?
Page 1 of 17
 
status:
                                                                  ~----
Y Equipment ID No DC~1-17MM~PP-ASP1      Equipment Class:** .fi EquIpment
 
== Description:==
ASW pump No.1 Comment:
evaluated l?!f Page 2 of 17
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant. Unit...L Equipment No. DC-1-17-M-PP-ASP1                                                                                      Attachment 1; Page 1 of 1 Licensing Basis Evaluation Issue:
Outer (6) J-bolts show some corrosion.
Evaluation:
Corrosion will not compromise structural int~grity of the connection~ The base support, in conjunction with the seismic braces still adequately restrain the pump and motor. Cleaning and recoating required.
Notification Required: Yes (50509828)
Evaluated by:  _..!!JW~R~H!.....-.._ _ W        =----'JA C~~R~~fb~.l...!iQ:::C)
:!!:::!:::=.-"'=--~,~o~If/'~
                                                                                                    -J ~1L"7-!._:::--
Reviewed by:  _S=..:.M.:..:.M:..::...:....-_~
                                            ~.,~.F-'*~~~~trc..::;..~~
* _ ___-'-(I?-+-'/lL..L.,,+-I-I-"i~=-_ _ _ ____.;;..
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit ...1.
Eq uipment No. DC-"1-17-M-PP-ASP1                                                    Attachment 2, Page 1 of 1 Licensing Basis Evaluation Issue:
Open hook on ovefhead light fixture could allow fixture to fall during an earthquake, impacting soft targets on the pump.
Evaluation:
Based on DCM C-17 (Hosgri Response Spectra), Attachment J (Intake Structure), Spectra ID No. H-IS-E-VR_017-05-03 (Vertical Response Spectra on Top Deck at Aux. Saltwater Pump Rooms and East Crane Rail), the vertical zero period acceleration is approximately 0.55 g. Since this is less than 1.09, the light fixture 'will not uplift and become disengaged from the hook. Even if It were to become disengaged, the support at the other end (a swivel connection) should partia:lly support the fixture; minimizing the chance for damage to soft targets.
Open hook should be crimped to prevent seismically-induced falling.
Notification Required: , Yes (50509850)      th Evaluated by:            tA ~ (2.            ~ (2                                g,ho) 11..
Reviewed by:          ~t@:s==                                                    (o,llr~lZ-
 
~"Ilfinr'lr'l.:lll"'t ID No                                                                    Equipment Class:    1 ASW Flow Control Valves location:                Building: Iw:l2Io.e.                  Floor                            Room, Area:    1-CCWHE Manufacturer. model, Etc.            Fisher Governor Company 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 judgements and findings. Additional space is provided at the end oUhis checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the item one of the 50% of SWEl items requiring such                            N verification)?
The bottom side of the valve is bofted to a pipe flange that Is located just above the penetration to the floor. At the top. the valve Is bolted to a flexible bellows section that Is In tum bofted to the tube-side nozzle of the CCW Heat                        v Exchanger.                        .
: 2. Is the anchorage free of bent. broken, missing Of loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                                N/A
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is                      NlA one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismIc conditions?                                  y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures? .                                                                      y The valve Is located in a pit under one end of the CCW Heat Exchanger which protects it from falling objects.
: 8. Are overhead eqUipment, distribution systems. ceiling tiles. and lighting, and masonry block walls not likely to                            y collapse onto the equipment?
Reinforced block wall near valve has additional reinforcement at the base and near the top.
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic interaction evaluations, is eqUipment free of potentially adverse seismic Interaction effects?                                                                                                                                      y Other Adverse Conditions .
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                          y equipment?
The valve Is housed in a pit and the electrical lines to the va(ve position Indicators are supported off Unistrut to members bolted to the bottom of the pit. Although there is a drain in the pit it would be possible for water collect in the pit which could result in loss of the position indication signal. However, the only credible source of water in the pit is the threaded fire protection piping near CCW HX 1-2 which is well supported.
Page 1 of8
 
Seismic Walkdo1Nl1 C~ist (S\IVC)                          Status:  Y Equipment ID No pC;.1-17-P-VOA-SW-1-FCV-602                            Equipment Class: Z Equipment
 
== Description:==
ASW Flow Control Valves Comment:
Evaluated by:
c*
Page 2 of8
 
N Equipment ID No                                                                                                .Q Equipment
 
== Description:==
Indoor Hose Reel Stations Location:          Building:  ~                          FloocE!. ill                      Room, Area:  1-FWHRA38 Manufacturer, model, Etc.
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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e. Is the Item one of the 50% of SWEL Items requiring such        y verification)?                                                                                                      .
N
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
Top (2) and bottom (1) anchor bolts of the 6 total are backed away from the wall, see photo on page 9. There appears to be about a 114" gap from the mounting plate and the wall at the vel}' top and bottom of the mounting            y plates. . See Attachment 1 for disposition.
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
No corrosion Is Identified.
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  Y No cracks In the wall were seen.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the Item Is      Y one of the 50% for which an anchorage configuration verification Is required.)
6 - 3/8" diameter anchor bolts Installed In accordance with drawing 047483.
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adve~se seismic conditions?                N See question 2 noies.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                      N Fire hose rack could swing and hit the valve body and possibly the operator (hand wheel). See Attachment 2 for disposition.
S. Are overhead eqUipment. distribution systems, ceiling tiles. and lighting. and masonry block walls not likely to          Y collapse onto the equipment?
Nothing was Identified that could col/apse on the equipment.
: 9. Do attached lines have adequate flexibility to avoid damage?
y The fire hose itself Is flexible.
: 10. Based on the above seismic Interaction evaluations, Is equipment free of potentially adverse seismic Interaction effects?                                                                                                                      Y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y*
equipment?
Page 1 of 14
 
N Equipment Class: .Q Equipment
 
== Description:==
Indoor Hose Ree! Stations Comment:
Evaluated by:      KTM                ~
                                              ~    ~            IO/;;l3/d-O'~
SMM~
                                        .~--o-Page 2of14
 
Equipment No. DC-1-18-F-HR-FW-120-A38-1                                                    Attachment 1, Page 1 of 1 licensing Basis Evaluation Issue:
Firewater Hose Reel # A38 located in the Unit-1 Auxiliary Building, Area K, e/ev. 115~ a gap was found behind the brackets that mount the hose reel to the wall in two locations. The top of the upper bracket and the bottom of the lower bracket have an approx. 118" gap between the bracket and the wall. This gap Is under the anchor bolts, and it is unclear if the brackets were not originally installed flush, or if the anchor bolts have slipped over time.
Evaluation:
Hose reel stations are Seismic Category I up to the isolation valve, and the hose reel support is non-seismic, Design Class II per the DCPP Q-Ust (Ref. fire protection note F-18). Therefore, the as-found condition will not affect the operation or the availability of the hose reel station. Additionally, If the hose reel were to fall 'in a seismic event, there are no SISI targets in the area below or around hose reel station A38 that would be affected. and the fire hose on the reel would still be available for firefighting use. Therefore, this condition will not adversely affect the function of the hose reel.
SAPN 50512523 has been written. Engineering recommends that the anchor bolts be verified to be properly set and installed ,in accordance with MIP C-2.0. Shims behind the brackets *may be used as necessary. If proper installation cannot be verified, then the anchor bolts should be replaced if possible.
Notification Required: Yes (50512523)
Evaluated by: _ _    ~~~~=*~-(_...:...~    _ _-:;;:::;#-_ _ _      I_o_I2-_2---,-/_I_"2-Reviewed by:    -~~~~~~~~~'T"        =:;;..~ ____            ~/~f-f~--#-;/...:.../_Z-_ _ _ _ _ _ _ __
 
Equipment          DC-1-18-F-HR-FW-120-A38-1                                                    Attachment  Page 1 of 1 Issue:
During the Fukushima 2.3 seismic walk down of the Firewater Hose Reel # A38 looated in the Unit-1 Auxiliary Building, Area K, elev. 115~ it was found that the hose reel could swing and impact the supply valve for the hose. The outside circular member of the hose reel (about 112 inch diameter tube shape) could only impact the body of the valve; the stem and handwheel are not affected.
Evaluation:
This is an SISI concern, since swinging of the hose could impact the valve. However, since the reel is relatively free to swing on its hinges (Le. there is very little friction), there Is very small input motion in a horizontal direction to cause the reer to swing. Seismic testing of large panels with their d.oors open has shown that the door itself swings very little, and the impact forces associated with the door hitting the panel are very small (reference EPRI Seismic Walkdown Engineer training for Fukushima Recommendation 2.3 Seismic Walkdowns). Engineering concludes that due to this experience, coupled with the fact that the valve body is very robust and could withstand the postulated Impact forces, the as-found condition is acceptable from an SISI standpoint and the hose reel is capable of performing its intended function.
During use of the hose reel; however, in the unlikely event that the hose reel were to be swung directly at the valve as it were spinning, the radial members of the reel could impact the valve handle. It is unlikely that it would damage the valve, but engineering recommends the installation of a mechanical stop be installed, similar to other hose reel stations in the Aux. Building (ref. hose reel No. A39-2 located on elev. 115', U-2, near column lines 20 and Nand dwg. 6003029-51 for typical details).
Notification Required: Yes ( 50512606)
                                    ': :;"'- I:. .;ijh~ -;:;: p- ___ID..;;.../~_L-+I-I'<--
Evaluated by: _ _/l..y-.;....:t_.7fZUu_'                                            _____- - _
                      ~~~~~:..:....."c...:.4~~~~___---l{...:;..t:7+-!u-.~&,+-..60:0:z......-~_ _ _ _ __
Reviewed by: _ _
                      ~                    U                          i        /
 
j:.;.; .... lliinl'V\O'll'1It ID No Equipment
 
== Description:==
 
Location:                        Building: Turbine                  Floor EI. 85'              Room. Area:    l-pEG-11 Manufacturer, model, Etc.
Instructions for Completing Checklist This checklist may be used to dociJment 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
------------,------------~--------------                                                                                    .. _........... _---
AnchQrage
: 1. Is the anchorage configuration verification required (i.e, is the item one of the 50% of SWEL items requiring such                        N verification)?
y
: 2.        (5 the      anchorage free of bent. broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks In the concrete near the anchors?                                                                y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is                    NfA one of the 50% for which an anchorage configuration verification is required.)
Small electrical heater set on (2) pedestals that are each anchored to the ffoor slab by (4) 1/2" shell anchors. The heater is secured to the pedestals by 5/811 Uwbolts.
: 6. Based on the above anchorage evaluations. is the anchorage free of potentially adverse seismic conditions?                                y Interaction Effects
: 7. Are soft targets free from Impact by nearby eqUipment or structures?                                                                      y
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting. and masonry block waifs not likely to                          y collapse onto the equipment?
Located under permanent maintenance platform.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Oil lines include flexible hoses near heater. Electrical oonnections have adequate flexibility.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                                    y Other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                        y equipment?
Page 1 of9 I
I
 
Seismc Walkdown Cheddist (SWC)                        Status:    Y Equipment 10 No DC-1-21-E-HT-LOH1                                Equipment Class: .Q Equipment
 
== Description:==
pG No 1 Lube Oil Electric Heater Comment:
Evaluated by:                              Date:
                                                                        /.o//~&#xa2;o/'12.
IOII~/Wrl.-
Page 2 of9
 
a;;;.~"il~I'lvq It
 
== Description:==
DG No.1 DC Power Supply Transfer Switches location;              Building: Turbine                    FloorEI. 85                        Room, Area: 1-DEG-11 Manufacturer, model, Etc.        Square D Company 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage 1, Is the anchorage configuration verification required (i.e. is the Item one of the 50% of SWEL items requiring such          N verification)?
The small panel inoludes (4) welded tabs at eaoh comer through which (4) 3/8" bolls secure the panel to (2)
Unistrut assemblies located at the top and bottom of the panel. The Unistrut assemblies are In tum welded to a                y building colUmn (covered by fire resistant material).
: 2. [s the anchorage free of bent. broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                    y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is        NJA one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                        y
: 8. Are overhead equipment, distribution systems, ceiling iiles, and lighting. and masonry block walls not likely to            y collapse onto the equipment?
: 9. 00 attached lines have adequate flexibility to avoid damage?
y Conduit running from top of enclosure is well supported
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                      y gther Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          y equipment?
Page 1 of 15
 
Seisnic Walkdown Chedclist (S\NC)                            Status:    Y Equipment ID No DC-1-21-E-S-EQO-11                                        Equipment Class: 14 Equipment
 
== Description:==
DG No. 1 DC Power Supply Transfer Switches
-Comment:
Evaluated by:
Page 2 oflS
 
Em.IIOITlent ID No                                                                                              1 Diesel Fuel Oil Transfer Pump No. 0-1 lOcal Contactar panel location:        Building: AUxiliary                        FloorEI.  .1W Manufacturer, model, Etc.      Cutlet Hammer 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le. is the item one of the 50% of SWEL Items requiring such                            N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
Anchored by (4) bolts and spring nuts into (2) horizontal Unistrut members located top and bottom. The Unistrut members are each In tum bolted to the reinforced masonry block wall by (2) 112" through bolts.                                                y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                                    Y
: 5. Is the anchorage configuratlon consistent with plant documentation? (Note: This question only applies if the item is                        N/A one of the 50% for which an anchorage configuration verificatio.nis required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                                    y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment Qf structures?                                                                          y There are contactors inside.
S. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                              y coJlapse onto the equipment?
Conduit, cable trays, and room lighting fixtures are well supported. Panel is mounted on reinforced masonry block wall. Masonry waif has additional reinforcement at both the base and the top including horizontal braces that span to the concrete wall.
: 9. Do attached lines have adequate flexibility to avoid damage?
y Connections are rigid conduit.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                                        y Other Adverse Conditions
: 11. Have you looked for and found no other seIsmic conditions that could adversely affect the safety function of the                            Y eqUipment?
Page 1 of18
 
Seisnic WalkdollVll Cheddist (SWC)                                      Status:  Y Equipment 10 No DC-1-21-LPH65                                                      Equipment CI~ss:  1 Equipment
 
== Description:==
Diesel Fuel Oil Transfer Pump No. 0-1 lOcal Contacior Panel COll1ment:
Evaluated by:
                                                                                          /t!:J//~~/"2-10/18/ ZiJI'&
Page 2 of 18
 
i-Y'-JIIJ.II.IIICIU (0 No Equipment DelSCfilption:        Diesel Generator No 1 (Engine and Generator)
Location:              Building: Turbine                          Floor EI. &sect;.Q                Room, Area: 1-DEG-11 Manufacturer, model, Etc.        Alec Engine Inc.
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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verifICation required (Le, is the Item bne of the 50% of SWEL items requiring such          Y verification)?                                                                  .
The Diesel Generator skid is anchored by (14) 1-114" sleeved anchor bolts and (10) lateral stops (3 on each side and 2 on each end),                                                                                                        Y
: 2. Is the anchorage free of bent, brok.en, mlssfng or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mUd surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors? .                                                y
: 5. Is the anchorage configuration consistent with ptant documentation? (Note: This question only applies if the item is        y one of the 50% for which an anchorage configuration verification is required.)
The anchorage oftha skid is Identical to that shown on drawings 663082-103 (4 pages). 438309- sheet 1, and 4004946-sheet1.
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  Y Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y Soft targets consist only of small tubing lines. No credible falling sources we~e identified.
: 8. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to          Y collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
y All parts are on a common skid and all sl<ld-mounted items appear to be properly anchored to the skid.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                      y Other Adverse Conditions
: 11. Have you looked for and found no other seismic concfrtions that could adversely affect the safety function of the        Y equipment?
Page 1 of 28
 
Seismic Walkdown Checklist (S\NC)                                      Status:  y Equipment 10 No DC-1-21-M-EN-DEG1                                                  Equipment Class:  1I Equipment
 
== Description:==
Diesel Generator No 1 (Engine and Generator)
Co mment:
Includes The fof/owing subcomponents.
Fuel Oil Day Tank DC-1-21-M-TK-DFODT1 which is a welded steel box that is located under the engine and integral with the skid. No structural integrity issues were Identified.
Radiator Water Pump DC-1-21-M-PP-JWP1 which Is attac/led to the engine and was reviewed.
Electrical Generator DC-1-21-M-GN-DEG1 which was reviewed.
Evaluated by:
                                                                                            "~//~:2.&#xa3;>/ -L
                                                                                            /0/ 1l3!cOIZ-Page 2 of 28
 
Status:    Y
                                                                                                ...'-I.... '"''' ...... ~ Class: Q Equipment
 
== Description:==
 
- - -..    ----~---- ..            - ..- - -..- - - - - - - - -..-..- - - - - - - - - - ..-.---._----_._----
Location:        Buiiding: Turbine                        Floor EI. 107                      Room, Area: 1-DEG-ES-11 Manufacturer, model. Etc.
Instructions for Completing Checklist This checklist may be used to document the results ofthe 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 judgements and findings. Additional space is provided at the end of this checklist for documentIng other comments.                                                                                    .
Anchorage
: 1. Is the anchorage configuration verification required (i.e, Is the item one of the 50% of SWEL items requirIng such                          y verification)?
The Exhaust Silencer Is supported by two saddle supports set on short concrete pillars. The inlet side support is fixed and the outlet side support is sfiding. Two (2) embedded bolts anchor each saddle. The fixed saddle is                                y additionally braced by (2) square tube sections run to a baseplate that is well anchored to the floor. The sliding end of the silencer is also additionally braced in the lateral direction by struts that run from the discharge piping Immediately adjacent to the end of the silencer to anchor plates that are bolted to the concrete structure.
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                                  y One minor hairline crack extends approximately 2' from center of fixed support. No impact on anchorage expected.
: 5. Is the anqhorage configuration consistent with plant documentation? (Note: This question only applies if the item is                        y one of the 50% for which an anchorage configuration verification is required.)
Anchorage configuration matches drawings 438390-1 and 463671-1
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                                  y Interaction Effects
: 7. Are soft targets free from impact by nearby eqUipment or structures?                                                                        y Room is essentially empty and the silencer has no soft targets.
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                          y collapse onto the equipment?
Block walls are reinforced and seismically qualified.
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                                      y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                          Y equipment?                                                                                  .
Page lof17
 
Seismic Walkdown Chedclist (S\IVC)              Status:    Y Equipment 10 No DC-1-21-M-MISC-ES1                          Equipment Class: Q Equipment
 
== Description:==
OG No. 1 Exhaust Silencer Comment:
Evaluated by:
                                                                  /r~o/~/z
                                                                  /O/19/ZPI1..
Page 2 of 17
 
Eqllipmlent Class: Q Equipment
 
== Description:==
DG No. 1 Inlet Silencer Location:          Building: Turbine                              Floor El. 85                                Room, Area:    1-DEG-11 Manufacturer, model, Etc.        Kittell Myffler & Engineering 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 judgements and findings. Additional space Is provided at the end of this checkli~t for documenting other comments.
Anchorage
: 1. Is the anchorag~ configuration verification required (i.e, is the item one of the 50% of SWEl items requiring such                      N verification)?
Bolted to 2211 diameter inlet pipe flange by (20) 1-114" bolts. Connection to turbo-charger is by means of a flexible connection.                                                                                                                              y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete neaf the anchors?                                                                y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is                    N/A one of the 50% for which an anchorage configuration verification is. required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                              y Just above the silencer the inlet pipe is anchored to the concrete wall through a massive box-section framework that is anchored by (4) approximately 1-112" through-bolts on either side (8 bolts total).
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                                    y
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                      .y collapse onto the eqUipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
y 10~ Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                                  y other Adverse Conditions
: 11. Have you rooked for and found no other seismic conditions that could adversely affect the safety function of the                      Y equipment?
Page 1 of9 f
 
Seismic Walkdovvn Checklist (SWC)                                                Status:    Y Equipment ID No DC-1-21-M-MISC-IS1                                                            Equipment Class: Q Equipment
 
== Description:==
DG No, 1 Inlet Silencer Comment:
Evaluated by:                                                            Date:
                                                                                                    /~I/~'20/z.
                                                                                                    /0/ J8IWI~
Page 2 of9
 
EqlJiplnellt
 
== Description:==
DG No 1 Air Start Receiver A location:          Building: Turbine                        FloorEI. 85 Manufacturer, model, Etc.      HSBC Company 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required ~.e. is the item one of the 50% of SWEL items requiring such          Y verification)?
The vertical tank is anchored by four (4) 7/8/1 embedded anchors. The tank does not have an upper support.
y
: 2. Is the anchorage free of bent, broken. missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                  y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the Item is      Y one of the 50% for which an anchorage configuration verification is required.)
The anchorage is consi~tent With anchorage calculation D-21-7-1.
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y Interactron Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                      Y Soft targets consist of small diameter SS tubing which Gould cause the tank to vent if broken by falling objects. No credible seIsmic Interaction sources were found.
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting. and masonry block walls not likely to            y collapse onto the equipment?
No masonry walls; lighting fixtures are positively restrafned. Emergency lighting secured to walJs through Unistrut members.
: 9. Do attached lines have adequate flexibility to avoid damage?
v
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                      y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page 1 of 14
 
Seismic Walkdown Checklist (SWC)              Status:    y Equipment ID No DC-1-'21-M-TK-AR1A                          Equipment Class:
Equipment
 
== Description:==
OG No. 1 Air Start Receiver A Comment:
Evaluated by:
                                                                  /&O//~"UJ/2..
fO lIB/lOre.-
Page 2 of 14
 
Status:
Equllpmlent ID No                                                                                            Class:    .Q Equipment
 
== Description:==
 
Location:            Building: Turbine                        FloorEI.  ~                      Room, Area: l-DEG-11 Manufacturer. model, Etc.        Paullin Equipment Companl!
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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuratlon verification required (i.e, is the Item one of the 50% of SWEL Items requiring such                  N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                            y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is              N/A one of the 50% for which an anchorage configuration verification is required.)
: 6.  ~ased    on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditIons?                      y Atthe back end. the filter Is connected to the piping by a flange connection with (10) 1-114" bolts. A vertical pipe strut supports the piping just downstream of the filter. At the front end, a 4 X 4 structural tube section is welded to the air filter cover. .Rigid struts connect the filter cover to the concrele structure, supporting the front end in both the horizontal and vertical directions.                                    .
Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                                y
: 8. Are overhead equipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                    y collapse onto the equipment?
: 9. Do attached lines have adequate flexibility to avoid damage?
N/A 10_ Based on the above seismic Interaction evaluations, Is equipment free of potentially adverse seismic interaction effects?*                                                                                                                              y Other Adverse Conditions 110 Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                  Y equipment?
Page 1 of 11
 
Seismic Walkdo1M1 Checklist (SVVC)                Status:    Y Equipment 10 No DC-1-21-P-FL-CAF1 Equipment Class: Q Equipment
 
== Description:==
DG No 1 Inlet Air Filter Comment:
Evaluated by:
                                                                      /1!;1//~~/~
                                                                      /0 !'B/cOll.
Page 2 of11
 
Status:  Y Equliprrtent 10 No                                                                                                I Equipment
 
== Description:==
[)G No 1 tyel 011 Sbuto(fYaive Header B location:        Building: Turbine                        FloorEt M                        Room, Area:    1-PEG-11 Manufacturer, model. Etc.      Anohor-OarDng Valve with Bettis AQtu~tQf Instructions for Completing Checklist
. This checklist may be used to document the results of the 8el8mb W'alkdown of an Item of equipment on the SWEL The space below each of1he following questions may be used to record the results of judgements and findings, Additional space is proVided at the end of this checklist for documenting other comments.
Ancborage
: 1. Is iIle anchorage configuration verification required (I.e, is the Item one of the 50% of SWEL items requiring such        N vertflcatlon)?
y
: 2. Is the anchorage free of bent. broken. miSSing or loose hardware?
1-1/2" pip9~mounted valve. Pipe supported within 6' of valve on either side.
y
: 3. Is the anchorage free of corrosCo!'i that Is more than mild surface oxidation?
Trench Is dry end pipe supports BTa covered with tar-likematerlal to suppress corrosion.
: 4. 15 the anchorage free of visible cracks In the concrete near the anchors?                                                  Y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is      N/A one of the 50% forwhich an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y Intsnic110n Effects
: 7. Are soft targets free from Impaot by nearby equipment or structures?                                                        Y Set screws securing floor grating over valve are missing. However, configuration of trench and floor grating sectlon precludes grating from. faIling on valve. For disposition see Attachment 1.
: 8. Are overhead equipment. distribt,Jtion systems, ceiling tiles, and lighting, and masonry block walls not likely to          V collapse on10 the eqUipment?
Floor grating provides general protection for the valVe.
: 9. Do attached lines have adequate flexibility to avoid dam~ge?
y
: 10. Based on the .above seismic interaction evaluations. Is eqUIpment free of potentially adVerse seismlo interaction effects?                  .                                                                                                  V Of her AdyQra9 Cgodlflons
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
lofI0
 
Seismic Walkdown CheddiSt (SWC)                    status:  Y Equipment ID No DC-1-21-P-VOA-DEG-1-LCV-85                      Equipment Crass: 1 Equipment
 
== Description:==
PG No 1 Fuel Oil Shutoff Valve Header B Comment:
                    .Evaluated by:                              ~
                                                                      . Ib/2S /2.1>/2-101";I'l-( .
Page2of l 0
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit_1
  ..:quipment No. DC-1 P-VOA-OEG-1-LCV-85                                          Attachment 1, Page 1 of 1 Licensing Basis Evaluation Issue:
Set screws securing the f/oorgrating over the valve are missing.
Evaluation:
The grating is non-safety related, but must not become dislodged during an earthquake such that it could damage the LCVs or other SISIP targets in the DG rooms .
. Since the grating is located in a recess in the floor, it cannot move horizontalJy during an earthquake~ The maximum vertical seismic acceleration (Hosgri Earthquake per DeM C-17)is 0;5 g, so the unanchored grating will not be lifted upWards during an earthqu~ke .
Therefore, this condition does not impact the operation of DCPP.
Notification Required: Yes (50508115)
Evaluated by:    _--&#xa5;-3flfJ~~      :-+---=-\<--'-~    '-~__~~r---z;-:+-'-I'2-_ _ __
  ~eviewed by: ----HJ]~.,...t..J.l~2.--::J+~)-I-I"-: : . - _ __ _ _ _--+-~fr_~SIIJ-G_ _ _ __          --..,.-_ _
 
Status:
Eqtiiprrlent Class:            Q EqlJiplnS!rlt
 
== Description:==
Post-LOCA Sampling Room Ventilation Duct Heater No. 29A
                ........... _--_..._ - . -....**_  .._ ....--_.. _.__ ......**.* _ - - - - - - -        ***.***...... - ........ ~----
Location:          Building: Auxiliary                      Floor EI. .1.QQ                  Room, Area:          1~HT-EH-29A Manufacturer. model, Etc.        Nutherm International 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 judgements and findings. Additional space is provided at the end of this Checl\lis:t ~or do~umentlng other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e. is the item one of the 50% of SWEl items requiring such                        N verification)?
Y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
In-line heater mounted between duct flanges. The heater is also individually supported by an angle bracket system that ;s bolted to the wall. Wall bracket system ;s secured to the wall by (8) 3/8'1 expansion anchors.                              y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
Only surface corrosipn on flange bolts and nuts.
: 4. ls the anchorage free of visible cracks in the concrete near the anchors?                                                                Y
: 5. Is the anchorage confIguration consistent with plant documentation? (Note: This question only applies if the item is                    N/A one of the 50% for which an anchorage configuration veiification is required.)
Anchorage is consistent with drawing 513145-1
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                                y Interaction Effects
: 1. Are soft targets free from impact by nearby eqUipment or structures?                                                                      y No visible soft targets.
: 8. Are overhead equipment. distribution systems, ceiling tiles, and lighting. and masonry block walls not likely to                        y col/apse onto the equipment?
Room lighting fIXtures pose the only falling source and all are well anchored to the lighting conduit runs.
: 9. Do attached lines have adequate flexibility to avoid damage?
Y Connecting lines are in rigid conduit.
: 10. Based on the above seismic interaction evaluations. is equipment free of potentially adverse seismic interaction effects?                                                                                                                                    y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                        Y equipment?
Page 1 of 12
 
Seismic WalkdolNl1 Checkr.st (SWC)                                  Status:    Y Equipment 10 No DC-1-23-E-HT-EH-29A                                            Equipment Class: Q Equipment
 
== Description:==
Post-lOCA Sampling Room Ventilation Duct Heater No 29A Comment:
Evaluated by:                                              Date'
                                                                                        /~//~~/'2.
                                                                                      /0 IIS/lO 1[,
Page 2 of12
 
EqLllpmlent ID No Equipment
 
== Description:==
 
location:          Building: AuXiliary                    FloorEI. 154                        Room, Area:    1~CP"35 Manufacturer. model. Etc.
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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.                    '
Anchorage
: 1. Is the anchorage configuration verification required (Le, is the item one of the 50% of SWEl items requiring such                  N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
Anchorage consists of (4) bolts with spring nuts to (2) horizontal Unisfruf members that are in tum bolted to the concrete wall with (4) concrete anchors.                                                                                            y
: 3. [s the anchorage free of corrosion that is more than mild surface oxidation?
. 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                          Y
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies if the item is              N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                          y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                                y A/I nearby wa/l~mounted panels and junction boxes are well anchored.
: 8. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                    y collapse onto the equipment?
Overhead HVAC dueling has rigid frame supports combined with rod hangers.
: 9. Do attached lines have adequate flexibility to avoid damage?
y All connectit;>ns are class 1 supported rigid conduit.
: 10. Based on the above seismic interaction evaluations, is equipment free of potentially adverse seismic interaction effects?                                                                                                                              y other Adverse Conditions
: 11. Have you looked for and found no other seismiC conditions that could adversely affect the safety function of the                  y equipment?
Page lof16
 
Seismc walkdO\M1 Checklist (&1NC)                        Status:    Y Equipment ID No DC-1-23-E-PNL-CRC1                                  Equipment Class:  2Q Equipment Des~ription:  Control Room Ventilation Control Cabinets .
Comment:
Evaluated by:                                  Date:
                                                                          /~//~:z.tJ/ Z.
J(J Ila( 'lOll.
Page 2 of 16
 
Equipment
 
== Description:==
 
location:          Building:  ~                            Floor EI .. 1QQ                  Room, Area:  1-PNl-ARP Manufacturer, model, Etc.
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 eaoh of the following questions may be used to record the results of judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (Le, Is the Item one of the 50% of SWEL items requiring such        y verification)?
y
: 2. Is the anchorage free of bent. broken, missing or loose hardware?
All anchor bolts are securely fastened.
y
: 3.  (s .the anchorage free of corrosion that Is more than mild surface oxidation?
No corrosion Is present.
: 4. Is the anohorage free of visible cracks in the concrete near the anchors?                                                  y No cracks are visible.
: 5. Is the anchorage configuration consIstent with plant documentatfon? (Note: This question only applies If the item Is      y one of the 50% for which an anchorage configuration verification Is required.)
(4) 112" anchor bolts at the base. Internal components are mounted on a plate wIth 4 anchor bolts.
: 6. Based oil the above anchorage evaluations. Is the anchorage free of potentially adverse seismic conditions?              y The frame Is braced lateraOy in-plane with the panel. The bottom of the panel has stiffener plates welded to the frame and the floor In the out-of-plane direction of the panel.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                      y All nearby cabinets and conduit are seIsmically restrained.
: 8. Are overhead equipment. distribution systems, ceiling tiles, and lighting. and masonry block walls not likely to          y collapse onto the equipment?
Block walls have been retrofitted with steel members which are anchored to the floor and to the ceiling.
: 9. Do attached line~ have adequate flexIbility to avoid damage?
y No Issues with attached lines.
: 10. Based on the above seismic Interaction evaluations. Is equipment free of potentially adverse seismiC Interaction effects?                                                                                                                      y Other Adverse CondltlDns
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
lof9
 
Status:
i=nlllnr'n.c:u'd ID No Equipment
 
== Description:==
 
Comment:
Evaluated by' KTM ~ ~~
                                        ~~  J8/ ~o I 0 0 . - - - - -
SMM f**
Page 2 of9
 
y Eqlliprrlent 10 No
_ _ _ _ , _ _ _ _
* ___ o . _ _ _ _ _ _ _ _ _      . . .____ ._. _ _ _ _ _ _ _ _ _
* _ _ _ _ _ _ _ _ _ _ _ . _ . . . . ._ ** _ _ _ _ _
* _ _ _
* location:        Building: Auxiljary                    ffoorEL .lM                        Room, Area:          ~
Manufacturerl model, Etc.      ~
Instructions for Completing Checklist This checklist may be lIsed 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 judgements and findings. Additional space is provided at the end of thIS checklist f9f d~cumenting other ~omments.
Anchorage
: 1. is the anchorage configuration verification required (Le, is the item one of the 50% of SWEL items requiring such                                                                N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
The compressor unit ;s bolted to (2) transverse base channels by (4) 112" bolts. The heavy structural channel sections are in tum secured to the floor slab by (4) 518" embedded anchors that have anchor pJates at the bottom.                                                                  y
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                                                                        y
: 5. Is the anchorage configuration consistent with plant documentation? {Note: This question only applies if the item is                                                          N/A one of the 50% for which an anchorage configuration verification is required.}
Anchorage is consistent with drawing 443333-1.
: 6. Based on the above anchorag~ evaluations, is the anchorage free of potentially adverse seismic conditions?                                                                        y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                                                                              y Soft targets consist of very small diameter copper tubing. However. the tubing is in general proteoted by the adjacent control panel and It's support frame.
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                                                                  y collapse onto the equipment?
Overhead conduit and fire water piping are well supported and an overhead floor drain line that is rod-hung is partially embedded in the HVAC duct insulation which provides lateral restraint. Both the fire water tmd floor drain lines penetrate a reinforced masonry wall immediately behind the compressorThe reinforced masonry wall includes additional support both at the base and the top. -
: 9. Do attached lines have adequate flexibility to avoid damage?
y Both the electrical connections and .
the compressor inlet and outlet nozzles include fleXible .sections.
: 10. Based on the above seismic interaction evaluations, is eqUipment free of potentially adverse seismic interaction effects?                                                                                                                                                                            y Other Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the                                                                y equipment?
f--
Page 1 of 13
 
Seismic Walkdovvn Chedclist (SWC)                                Status:    Y Equipment 10 No DC-1-23-M-BC-CP-35                                            Equipment Class: 12 Equipment
 
== Description:==
Control Room Ventilation Air Conditioning Compressors Comment:
Evaluated by'                                            Date:
                                                                                    /D//o/~/"2-
                                                                                      /0/18/ an",
Page 2 of 13
 
Status:
Eq1uiplmslnt
 
== Description:==
 
location:        Building:  ~                            FloorEi.    ~    ,              Room, Area:  j*BFE-1 Manufacturer, model, Etc.
Instructions for Completing Checktrst 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 judgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verificaiton required (I.e, is the Item one of the 50% of SWEL Items requiring such          N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
All anchorage Is present and in good condiUon.
y
: 3. Is the anchorage free of corrosion that is more than mUd surface oxidation?
Part of the fan skid and some anchor bolts at the bottom of the skid had minor surface corrosion. Backdraft dampers have mild surface corrosion. No structural Issues.                                                                  y
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?
No visible cracks were seen.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This questIon only applies if the Item Is      N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                  y No adverse seismic conditions were Identified.
Interaction Effects
: 7. Are soft targets free from Impact by nearby equipment or structures?                                                        y No credible sources were identified that could impact soft targets.
: 8. Are overhead equipment, distribution systems, ceiling tiles, and fighting. and masonry block walls not likely to            y collapse onto the equipment?          ~/t!1~ ~ (PpJ/I'L                  1PH tcl,.lre.
No overhead equipment, distribUc;. systems, ceiling tiles 9[0 If'Rt~ in the room. Lighting was rod hung with a ball and socket Joint on one end anc! ;WS-hook on the opposite end of the fixture. SeIsmic interaction is Judged to be incapable of damaging equipment or soft targets.
: 9. Do attached Hnes have adequate flexibility to avoid damage?
y All attached lines use flexible conduit.
: 10. Based on the above seismic Interaction evaluations. is equipment free of potentially adverse seismic interaction effects?                                                                                                                      y No Issues were Identified.
Other Adyerse Condjtfons
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the          Y equipment?
Page 10f15
 
Status:
I::QllI[.JUltnn Class: .9 Equipment
 
== Description:==
Aux Bldg Ventilation Exhayst Fans Comment:
Evaluated by'      KTM
                                              ~~                    16/IS!d-o\
SMM
                                            ~~
( ....
Page 2 of15 F
j f
 
Status:    Y EQlllipmlsnt
 
== Description:==
FHBVS Normal Exhaust Fan Location:          Building: Auxiliary                      BoorEI. j!Q                      Room, Area:    ~
Manufacturer, model, Etc.      Buffafo Forge Company 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 judgements and findings. Additional space is provided at the end of this checklist for documenting other comments.
Anchorage
: 1. Is the anchorage configuration verification required (i.e, is the item one of the 50% of SWEL items requiring such            N verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
Belt*driven squirrel cage fan that is bolted to a 6" I-beam frame by (3) 5/8" bolts on either side. The frame is in tum bolted to the concrete floor slab by (4) 5/8" embedded anchor bolts on either side and by (3) additional 5/8 11                y embedded bolts on the motor end. The motor is bolted to a motor base that is welded to the base frame for the fan.
: 3. Is the anchorage free of corrosion that is more than mild surface oxidation?
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                      Y
: 5. Is the anchorage configuration consistent INith plant documentation? (Note: This question only applies if the item is        N/A one of the 50% for which an anchorage configuration verification is required.)
: 6. Based on the above anchorage evaluations, is the anchorage free of potentially adverse seismic conditions?                    y Interaction Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                          y The only soft targets for the fan consist of the electrical lines and tubing connections for the fan actuator which Is separately supported. The wall-mounted HEPA filters are adequately restrained.
: 8. Are overhead eqUipment, distribution systems, ceiling tiles, and lighting. and masonry block walls not likely to              y collapse onto the equipment?
The ventilation dueling Is rigidly supported and a flexible connection exists between the fan and the exhaust ducling. Room lighting Is either wall mounted or hung from the ceiling by pIpe sections with balf and socket connections.                                  .
: 9. Do attached lines have adequate flexibility to avoid damage?
y
: 10. Based on the above seismic interaction evaluations, is eqUipment free of potentially adverse seismic interaction effects?                                                                                                                        y Other Adyerse Conditions
: 11. Have you looked for and found no other seismic conditions that eQuid adversely affect the safety function of the            y equipment?
The overhead crene has been removed from tha crane rail.
( ..
Page 1 of16
 
Seismic WalkdolAlll Cheddist (SWC)                              Status:    Y Equipment ID No DC-1-23-M-BF-E-4                                            Equipment Class: ~
Equipment
 
== Description:==
FHBVS Normal Exhaust Fan Comment:
Eyaluated by:
                                                                                      /0//&#xa5;/  -2L) / 2-10/18/mll-Page 2 of 16
 
Status:    Y Equipment Class:    ~
Equipmel1t Desoriptlon:      ASW Pump Compartment Exhaust Fans Location:          Building: ~                              Floor El. -3.1                    Room, Area:    1-ASP1 Manufacturer, model. Etc.
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 judgements and findings. Additional space is provided at the end of this checklist for (loc(lmenting other comments, AochQrage
: 1. Is the anchorage configuration verification required (I.e, is the Item one of the 50% of SWEL items requiring such            y verification)?
y
: 2. Is the anchorage free of bent, broken, missing or loose hardware?
All anohorage ;s pres~nt top and bottom (6 total, 112'1 expansion anchors). The nut on the middle bolt Is not completely threaded due to the grounding plate between the nut and the washer. There is approximately 118" gap                y between the bolt face and the outer face of the nut. The 112" nut Is Judged to be sufficient to restrain the fan, but a notifloation should be made. The top 3 bolls also had Jess than fulllhroad engagement. East boll was less than 1116" from flush and other two were approx. 118" from flush. See Attachment No. 1 for disposition.
: 3. is.the anchorage free of corrosion that Is more than mild surface oxidation?
No corrosion Is present
: 4. Is the anohorage free of visible cracks In the conorete near the anchors?                                                      y No cracks were visible near the anchorage.
5, Is the anchorage configuration consistent with plant documentatIon? (Note: This question only applias If the Item Is          y one of the 50% for which an anchorage configuration verifioation Is required.)                    .
Anc/~or8ge appe~rs to    be consistent with plant drawings. S each, 112" die. Expansion bolts top and bottom.
S. Based on the above anchorage evaluations, is the anohorage free of potentially adverse seismic conditions?                    y N() adverse conditions other than fhread engagement discussed In Item 2 were Identified.
,nteractlou Effects
: 7. Are soft targets free from impact by nearby equipment or structures?                                                          y No sofi targets were Identified on the fan.
S. Are overhead equipment. distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to              y collapse onto the equIpment?
No block walls or overhead equipment in th~ area. The HVAC attaohed to the fan appears to be adequately seoured. Ught next to the fan could Impaot during a seismic avent, but It is judged that the Impaot would not have an adverse affect on the funotionality of the fan.
: 9. 00 attached lines have adequate f1exibmty to avoid damage?
y The attached line uses a flexible conduit.
: 10. Based .on the above selsmio interaction evaluations, is equipment      free of potentially adverse seismic interactlon effects?                                                                                                                          y See (lotes from question 8. No Issues were identified, other Adyerse Q90rJ1tlsms
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety Junctron of the              Y equipment?                                                                                                          .
Page lofa l
i~
 
1II!.~"'Um.::n. (SWC)                Status:  Y Equipment ID No pC~1"23:M-BF-E-1 03                                                    Equipment Class: !!
Equipment Oescription:  ASW  rump Compartment Exhaust Fans Comment; Bottom anchors inspected visually on 812912012. Upper bolts inspected via remote video on 9/19/2012.
Evaluated by'  ,KTM,KA              ~ ~Pate' 'O/-;;J.!:;./d-O(~
_ _ _ _...A~      ..~~~.                        IP/2.S})2-.
SMM
                                          ~f!::5;                                    ,oj~/I'J-Page 20fS
 
1.
Equipment No. DC-1-23-M-BF-E-103                                                                    Attachment Page 1 of 1 licensing Basis Evaluation Issue:
All anchorage is present top and bottom (6 total, 112" expansion anchors). The nut on the middle bolt is not completely threaded due to the grounding plate between the nut and the washer. There is approximately 118'1 gap between the bolt face and the outer face of the nut. The 1121l nut is judged to be sufficient to restrain the fan, but a notification should be made. The top 3 bolts also had less than fuJI thread engagement. East bolt was less than 1/16" from flush and other two were approx. 1/8" from flush.
Evaluation:
The lack full thread engagement on the Exhaust Fan E-103 bottom anchor bolts was found in 1997 (Ref. AR A0431367). The evaluation of as-found condition is documented in seismic legacy.Calc DHV-2.3. Rev. 6. It Is concluded that the thread engagement is acceptable.
In addition to the above finding! Fukushima 2.3 wafkdown also identified that the top 3 anchor bolts have (ess full thread engagement. However, by comparison of the thread engagements previously evaluated, the top three anchor bolts are not as critical as the bottom one. Therefore, the previous evaluation is applicable to the as-found condition of top anchor bolts. E-103 remains seismically qualified for DCPP design basis seismic events.
Recommendation: Update the drawing 59614 to retrect the as-found condition Notification Required: Yes ( 50519852 )
Evaluated by: _ _      ~~~~_.:......l---=:;:::=-=:;"f--    ___  !_()+-!_2_j.l..../_{~--.;:_ _ _ _ _ _ __
Reviewed by:    _--'-7'~~~~~..-.~_"---                            lo.r-~{._7-"",,,,:2_!t.......;z-
 
Status!
Equipment 10 No        DC-1-23~M-BF-E:43                                                    Equipment Class:    10 Equipment
 
== Description:==
48QN Switchgear Yentlfatfon Exhaust fans location:        Building:  ~                            FloorEI. iQa                      Room, Area:    ~
Manufacturer. model, Etc.      .Joy Technologies Inc 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 berow each ofihe following questions may be used to record the results ofjudgements and findings. Additional space Is provided at the end of this checklist for documenting other comments.
AnchQrage
: 1. Is the anchorage configuration verification required (i.e, Is the Item one of the 50% of SWEL Items requiring such            N verification)?                  . .
y
: 2. Is the anchorage free of bant, broken, mIssing or loose hardware?
y
: 3. Is the anchorage free of corrosion that Is more than mild surface oxidation?
Some minor surface corrosion present around the bottom edge of /he perimeter of the pedestal base plate
: 4. Is the anchorage free of visible cracks in the concrete near the anchors?                                                      y No concrete cracks obse/Ved.
: 5. Is the anchorage configuration consistent with plant documentation? (Note: This question only applies If the item Is          N/A one of the 50% for which an anchorage configuration verification Is required.)
: 6. Based on the above anchorage evaluations, Is the anchorage free of potentially adverse seismic conditions?                    y Interaction Effects
: 7. Are soft targets free from rmpact by nearby equipment or structures?                                                          y Potential soft target Is the electricsl flex conduit. However there are no credIble Inter8Ctlon sources sInce the fan Is roof mounted.                    .
: 8. Are overhead equipment distribution systems, ceiling tiles, and lighting, and masonry block walls not likely to                y collapse onto the equipment?
No overhead systems
: 9. Do attached lines have adequate flexibility to avoid damage?
y The attached conduit has a flexible connection. The ailaQhed duct Is braced. One end of tile fan has 8 flex oonnecUon.
: 10. Based on the above selsmlo Interaction evaluations, Is equtpment free of potentially adverse seismic interaction effects?                                                                                                                          y Qiber Adverse Conditions
: 11. Have you looked for and found no other seismic conditions that could adversely affect the safety function of the              Y equipment?
                                                                                                                                    \
Page lof9
 
---_._.        __..                                                -----------------_._--                      Status:  y Equipment ID No DC-1-23-M-BF-E43                                                            Equipment Class: .1Q.
Equipment
 
== Description:==
480-V SWitchgear Vanmatro" Exhayst Fans Comment:
Fan 1-E43 Is supported by two steel saddles which are mounted on a structural steel pedestal. The pedestal base prate is anchored to the concrete roof slab with 8 anchor bolts. On the east and west sides of the base plate, the middle anchor bolts are slightly off-center ( does not significantly affect desfgn capacity)
Inspection Includes bacl<draft damper DC-1-23-P-C-VAC-1-BDD-43 Surface COllOsion was noted on the backdraft damper (VAC-1-BDD-43). See Attachment No.1 for disposition.
Evaluated by' D~Nl              '                          I ~j~('2-<> I '2 ORe
                                                                                                                                          ~ .. -.
Page 2 of9
 
Seismic Walkdown Checklist (SWC)
Diablo Canyon Power Plant, Unit-L Equipment No. DC-1-23-M-BF-E-43                                                                Attachment 1, Page 1 of 1 Licensing Basis Evaluation Issue:
Surface corrosion was noted on the backdraft damper for Fan No. E-43 (VAC-1-BDD-43).
Evaluation:
The condition is considered to be surface corrosion at this timer so it does not impact the structural integrity of the damper. Therefore, the seismic qualification of the damper is not affected, and the
, damper remains capable of performing its required functions.
Recommendation:
Clean and recoat damper.
Notification Required: Yes (50510493)
Evaluated by:    _-=-W~l.AM..
                            --'--=-~
                                    -H--~        --""""'=-=--~_'-(~_ __ 't-t-1_2.h_ 1)_1..,...-_'_ _ __ _
Reviewed by: _~~:-p.i~a.;.=fl;. . -~. .: . . . ;_
                                                  . _ _ _ _ _ __ '-I-l)i_lz-l-l_/2.,._ _ _ _ _ __}}

Latest revision as of 20:49, 11 January 2025

Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.3 Seismic Unit 1. Part 1 of 2
ML12333A268
Person / Time
Site: Diablo Canyon Pacific Gas & Electric icon.png
Issue date: 11/27/2012
From: Halpin E
Pacific Gas & Electric Co
To:
Office of Nuclear Reactor Regulation, Document Control Desk
References
DCL-12-118
Download: ML12333A268 (210)
v • d • e


Text

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