ML20248H494

Regulatory Audit Summary Regarding License Amendment Requests to Adopt 10 CFR 50.69 and Permit Use of Risk-Informed Completion Times in Accordance with TSTF-505, Revision 2

ML20248H494
Person / Time
Site:	LaSalle
Issue date:	09/21/2020
From:	Bhalchandra Vaidya Plant Licensing Branch III
To:	Bryan Hanson Exelon Generation Co, Exelon Nuclear
Vaidya B
References
EPID L-2020-LLA-0017, EPID L-2020-LLA-0018
Download: ML20248H494 (12)

Text

September 21, 2020 Mr. Bryan C. Hanson Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

LASALLE COUNTY STATION, UNITS 1 AND 2 - REGULATORY AUDIT

SUMMARY

REGARDING LICENSE AMENDMENT REQUESTS TO ADOPT 10 CFR 50.69, RISK-INFORMED CATEGORIZATION AND TREATMENT OF STRUCTURES, SYSTEMS, AND COMPONENTS FOR NUCLEAR POWER PLANTS AND TO PERMIT THE USE OF RISK-INFORMED COMPLETION TIMES IN ACCORDANCE WITH TSTF-505, REVISION 2, PROVIDE RISK-INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4B (EPID L-2020-LLA-0017 AND L-2020-LLA-0018)

Dear Mr. Hanson:

By two letters dated January 31, 2020, Exelon Generation Company, LLC (Exelon, the licensee) submitted the following license amendment requests (LARs) to the U.S. Nuclear Regulatory Commission (NRC) for Renewed Facility Operating License Nos. NPF-11 and NPF-18 for LaSalle County Station, Units 1 and 2 (LaSalle):

(1) Request to modify (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20031E699) the LaSalle licensing basis to allow for the implementation of the provisions of Title 10 of the Code of Federal Regulations (10 CFR) Section 50.69, Risk-informed categorization and treatment of structures, systems and components [SSCs] for nuclear power reactors. The proposed changes are based on Nuclear Energy Institute (NEI) 00-04, Revision 0, 10 CFR 50.69 SSC Categorization Guideline, dated July 2005 (ADAMS Accession No. ML052910035) and NEI 04-10, Revision 1, Risk-Informed Technical Specifications Initiative 5b, Risk-Informed Method for Control of Surveillance Frequencies, Industry Guidance Document, dated April 2007 (ADAMS Accession No. ML071360456).

(2) Request to revise (ADAMS Accession No. ML20035E577) the LaSalle technical specification (TS) requirements to permit the use of risk-informed completion times for actions to be taken when limiting conditions for operation are not met.

The proposed changes are based on Technical Specifications Task Force (TSTF) Traveler TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b, dated July 2, 2018 (ADAMS Package Accession No. ML18269A041).

B. Hanson The NRC staff has reviewed Exelons LARs and determined that a regulatory audit would assist in the timely completion of the LAR review. The NRC staff conducted a combined regulatory audit that consisted of an in-office audit and a remote audit from June 15 to June 19, 2020. The initial audit plans consisting of In-office Audit and Site Audit were provided to the licensee on March 30, 2020 (ADAMS Accession Nos. ML20090F616 and ML20090F585, respectively). The updates to the audit plan to reflect a remote audit and the detailed audit agenda along with questions for the discussion during the remote audit were provided to the licensee on June 11, 2020 (ADAMS Accession Nos. ML20159A003 and ML20160A164, respectively). The staff reviewed documents and held discussions with members of Exelon and LaSalle on the LARs relevant to the NRC staffs review. The collective results of the regulatory audit were used by the NRC staff to finalize requests for additional information, which will be issued at a later date.

The audit summary for the combined remote audit is enclosed.

If you have any questions, please contact me by telephone at 301-415-3308 or by e-mail to Bhalchandra.Vaidya@nrc.gov.

Sincerely,

/RA/

Bhalchandra K. Vaidya, Project Manager Plant Licensing Branch III Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374

Enclosure:

Regulatory Audit Summary cc: Listserv

COMBINED REGULATORY AUDIT

SUMMARY

LICENSE AMENDMENT REQUESTS REGARDING RISK-INFORMED COMPLETION TIMES AND ADOPTION OF 10 CFR 50.69, RISK-INFORMED CATEGORIZATION AND TREATMENT OF STRUCTURES, SYSTEMS, AND COMPONENTS FOR NUCLEAR POWER PLANTS EXELON GENERATION COMPANY, LLC LASALLE COUNTY STATION, UNITS 1 AND 2 DOCKET NOS. 50-373 AND 50-374

1.0 BACKGROUND

A regulatory audit is a planned license or regulation-related activity that includes the examination and evaluation of primarily non-docketed information. The audit is conducted with the intent to gain understanding, to verify information, and to identify information that will require docketing to support the basis of a licensing or regulatory decision.

By two letters dated January 31, 2020, Exelon Generation Company, LLC (Exelon, the licensee) submitted the following license amendment requests (LARs) to the U.S. Nuclear Regulatory Commission (NRC) for Renewed Facility Operating License Nos. NPF-11 and NPF-18 for LaSalle County Station, Units 1 and 2 (LaSalle):

(1) Request to modify the LaSalle licensing basis to allow for the implementation of the provisions of Title 10 of the Code of Federal Regulations (10 CFR)

Section 50.69, Risk-informed categorization and treatment of structures, systems and components [SSCs] for nuclear power reactors (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20031E699).

(2) Request to revise the LaSalle technical specification (TS) requirements to permit the use of risk-informed completion times for actions to be taken when limiting conditions for operation are not met (ADAMS Accession No. ML20035E577).

The NRC staff performed a preliminary review of Exelons LARs and determined that a regulatory audit would assist in the timely completion of the reviews. The regulatory audit was performed consistent with NRC Office of Nuclear Reactor Regulation (NRR) Office Instruction LIC-111, Regulatory Audits, dated December 29, 2008 (ADAMS Accession No. ML082900195). The NRC staff conducted a combined regulatory audit that consisted of an electronic and remote audit from June 15 to June 19, 2020. The initial audit plans consisting of In-office Audit and Site Audit were provided to the licensee on March 30, 2020 (ADAMS Accession Nos. ML20090F616 and ML20090F585, respectively), and included a list of information that the licensee needed to upload on to the ePortals with access control, to the audit team members. The supplements to the audit plans, provided to the licensee on June 11, 2020, informed the licensee that the audit would be held remotely and the letter Enclosure

included the detailed agenda along with questions and explicit topics for review of the proposed alternative seismic approach and non-National Fire Protection Association (NFPA) 805 fire probabilistic risk assessment (PRA) (ADAMS Accession No. ML20159A003 and ML20160A164, respectively). The lists of documents uploaded by the licensee in response to the NRC staffs request and examined by the audit team for each licensing action is provided in Section 5.0.

The NRC staff reviewed documents and held discussions with members of Exelon corporate and site personnel regarding the LARs under staff review. The collective results of the regulatory audit were used by the NRC staff to finalize requests for additional information (RAIs), which will be issued at a later date.

2.0 AUDIT ACTIVITIES AND OBSERVATIONS 2.1 In-Office and Remote Audits The remote audit was conducted using video and teleconferencing capabilities. The purpose of the audit was to (1) gain a better understanding of the information in the LARs to support the staffs review, and (2) identify any information that would be required from the licensee to be provided on-the-docket for the NRC staff to render a staff finding to support the safety evaluation.

The NRC staff identified audit information needs for the remote audit in the June 11, 2020, audit plan supplements mentioned in Section 1.0 of this audit report. The NRC staff reviewed documents in the In-Office phase that were provided by the licensee on the electronic reading room.

During the remote audit, detailed discussions were held on various topics with the licensee, aided by the prepared presentations by Exelon, including videos and photos of the relevant areas of the plant. The NRC staff assessed the information from the remote audit to determine whether the information is needed to be provided on-the-docket, and therefore the need for issuance of RAIs. Upon the issuance of the RAIs, and the audit report issued, the audit is suspended.

Audit Discussions The NRC staff and the licensee discussed each of the information needs identified to the licensee via the audit plans and supplements to each audit plan. The technical discussions focused primarily on the peer-review process, plant response development, PRA acceptability and maintenance, and the licensees processes to support both risk-informed applications. In addition, a detailed technical discussion was conducted on the alternative seismic approach proposed by the licensee for use in its categorization program. The licensee provided an example demonstration of the implementation of the proposed approach aided by plant photos.

During the discussions, the licensee uploaded information on the electronic portal as needed, for the NRC staffs examination.

AUDIT

SUMMARY

The discussions provided useful information to the NRC staff on various elements of the technical adequacy of the PRAs, the proposed alternative seismic approach, and the programmatic elements of the risk-informed applications that are important in the staffs review.

On June 23, 2020, the NRC staff and the licensee concluded the remote audit summary discussion. In the audit summary, the NRC staff communicated to the licensee potential information that was identified during the audit that would need to be on-the-docket either through submission of a supplement or through the issuance of RAIs. The audit summary also included discussion of near-term milestones in the review of the LARs.

3.0 RESULTS OF THE AUDIT During the in-office and remote audits, the NRC staff did not make any regulatory decisions regarding the LARs under staff review. The audits identified information that the licensee needs to provide to the NRC on-the-docket and identified information that was not needed to render a staff finding, thus obviating the need for some RAIs.

4.0 AUDIT PARTICIPANTS Jensen Hughes (Exelon NRC Exelon Contractor)

Bhalchandra Vaidya (PM) Licensing: Don Vanover, RM, VP Robert Pascarelli (APLA, Branch Dave Gullott, Director Nick Sternowski, Director, PM Chief)

Adrienne Driver Brown (APLA) Dwi Kusumawatimurray, Sr. Mgr. Leo Shanley, RM, Mgr.

Todd Hilsmeier (APLA) Ken Nicely, Engr Ed Parsley, RM, Mgr., R-I Services Robert (Bob) Vettori (APLB) Jason Taken, Engr Jeff Schappaugh, RM Engr. (lead)

Jennifer Whitman (APLB) CJ Standridge, RM, M.O.

Stacey Rosenberg (APLC, LAS Site: Pat Johnson, RM, SRME Branch Chief)

Shilp Vasavada (APLC) Dan Mearhoff, LAS, Reg Doug Money, RM, FRME Assurance, Mgr.

• De (Wesley) Wu (APLC) Jereme Greenblott, LAS, Reg Dave Passehl, RM Engr., 50.69 Assurance Engr Ed Kleeh (EEOB) Terry Lanc, LAS, Reg Assurance Vicki Warren, RM Engr.

Engr Joseph Ashcraft (EICA) Mark Smith, LAS, OPS, SOS Jon Facemire, RM, RICT RTR SME G. Matharu (EEOB) Robert Dudley, LAS, OPS, SSV Heather Fox, RM, M.O.

(Secondary)

Norbert Carte (EICB) John Singleton, Calvert, OPS Dave Bidwell, RM, ISI (RICT RTR)

Victor Cusumano (STSB) James Heyeck, RM, PM (RICT)

Andrea Russell (STSB) Risk Management: Larry Lee, RM, Seismic SME Khadijah West (STSB) Jeff Stone, Director Vincent Andersen, RM, Seismic SME

Jensen Hughes (Exelon NRC Exelon Contractor)

John Bozga (RIII/DRS/EB1) - Str. Gene Kelly, Sr. Mgr. Industry (Seismic Alt. Tier 2)

Eng Garril Coles (PNNL contractor) Rachelle Slawta, Engr (RTR) John Richards (EPRI)

Mark Wilk (PNNL contractor) Jim Landale, Engr, RICT SME Pat ORegan (EPRI)

John Honcharik (NPHP)

• Phil Tarpinian, Engr Greg Hardy (SGH, EPRI contractor)

G. Bedi (EMIB)

• Nina Lacome, Engr (Observer) Bill Webster (Dominion)

Zach Rhoads, Engr (Observer) Tommy John (Dominion)

Stephen Kimbrough (Duke)

(Total 21) (Total 17) (Total 22)

(Grand Total 60)

Legend:

• not shown on MS Teams APLx = NRR, Div. of Risk Assessment, Applications and Licensing Branch x (A, B or C)

EMIB = IST NPHP = Piping and Pens EICA(B) = NRR I&C Branch A (B) EEOB = NRR Elec. Eng. Branch STSB = NRR Tech Specs Branch EB1 = Eng. Branch 1 RM = Risk Management (PRA) SRME = Site Risk Mgmt Engr.

FRME = Fleet Risk Mgmt Engr RTR = Real Time Risk 5.0 LIST OF DOCUMENTS AND MATERIALS PROVIDED ON THE ELECTRONIC READING ROOM A) FOR 10 CFR 50.69 PORTION OF THE AUDIT Item No. Description 1 028a, Big Note SC-1, SBLC_FYI - TRAINING AID ONLY.pdf 2 50.69 APLA-02 Response - Fire F and Os - Rev0 06-12-20.pdf 3 50.69 APLA-04 Response - Uncertainty Analysis Treatment - Rev0 (Final Draft).pdf 4 50.69 APLA-04 Response - Uncertainty Analysis Treatment - Rev1 - 2020_06_17 (Clean).pdf 5 50.69 APLA-06 Response Revision A 06-12-20.pdf 6 50.69 APLA Masking Risk Insights from Conservative Assumptions - Rev 0 (Final Draft).pdf 7 50.69 APLA-08 Response - FLEX - Rev1 - 2020_06_17 (Clean).pdf 8 50.69 APLA-09 Response - Fire Methodologies - Rev0 06-12-20.pdf 9 50.69 APLA-09 Response - Fire Methodologies - Rev1 - 2020_06_17 (Clean).pdf 10 DSC02741_2012_LS U1_1C41-A001 SLC tank.JPG 11 DSC02742_2012_LS U1_1C41-A001 SLC tank.JPG 12 DSC02743_2012_LS U1_1C41-A001 SLC tank base and suction line.JPG 13 DSC02744_2012_LS U1_1C41-C001A and B SLC pumps.JPG 14 DSC02745_2012_LS U1_1C41-C001B SLC pump.JPG 15 DSC02746_2012_LS U1_ SLC main and test tanks and piping.JPG 16 DSC02750_2012_LS U2_view of SLC area.JPG 17 ER-AA-569, Rev 002, 10 CFR 50.69 PROGRAM.pdf 18 ER-AA-569-1001, Rev 002, 10 CFR 50.69 ACTIVE COMPONENT RISK SIGNIFICANCE INSIGHTS.pdf 19 ER-AA-569-1002, Rev 002, 10 CFR 50.69 PASSIVE COMPONENT CATEGORIZATION.pdf

Item No. Description 20 ER-AA-569-1003, Rev 004, 10 CFR 50.69 RISK INFORMED CATEGORIZATION FOR STRUCTURES, SYSTEMS, AND COMPONENTS.pdf 21 ER-AA-569-1003-F-01, Rev 004, 10 CFR 50.69 CATEGORIZATION DOCUMENT.pdf 22 ER-AA-569-1004, Rev 002, 10 CFR 50.69 ALTERNATIVE TREATMENT IMPLEMENTATION PROCESS.pdf 23 ER-AA-569-1005, Rev 004, INTEGRATED DECISION-MAKING PANEL FOR RISK INFORMED SSC CATEGORIZATION DUTIES AND RESPONSIBILITIES.pdf 24 ER-AA-569-1006, Rev 001, REQUIREMENTS FOR IMMEDIATE, INTERIM AND PERIODIC PERFORMANCE MONITORING REVIEWS.pdf 25 ER-AA-569-1007, Rev 003, JOB FAMILIARIZATION OF 50.69 PROJECT TEAM AND SITE PERSONNEL.pdf 26 Importance Measures slide_EMK.pptx 27 Item 1 - LaSalle April 2017 FPIE FO Closure Report June 2017.pdf 28 Item 1 - LaSalle FO Closure and FSPR Report-03-25-19 Final Signed.pdf 29 Item 1 - LaSalle FPIE Peer Review Report - Final.pdf 30 Item 1 - LaSalle FPRA Peer Review Report Final.pdf 31 Item 2 - LS-PSA-013 Summary.pdf 32 Item 2 - LS-PSA-021.12 Uncert and Sensitivity Notebook R3 Final.pdf 33 Item 3 - LS-MISC-046 PRA Uncertainty Evaluation for RI Applications Rev 1 Final.pdf 34 Item 4 - LS-ASM-03.pdf 35 Item 5 - LaSalle FO Closure and FSPR Report-03-25-19 Final Signed.pdf 36 Item 5 - LaSalle FPRA Peer Review Report Final.pdf 37 Item 5 - LS-PSA-021.11 Summary and Quantification NB Rev 3 Final.pdf 38 LAS U1 Rx Bldg El 820_Area Map.JPG 39 LAS U1 Rx Bldg El 820_SBLC_1.JPG 40 LAS U1 Rx Bldg El 820_SBLC_2.JPG 41 LAS U2 Rx Bldg El 820_Area Map.JPG 42 LAS U2 Rx Bldg El 820_SBLC_1.JPG 43 LAS U2 Rx Bldg El 820_SBLC_2.JPG 44 LAS Unit 1 SBLC-a.jpg 45 LAS Unit 1 SBLC-b.jpg 46 LAS Unit 1 SBLC-c.jpg 47 LAS Unit 1 SBLC-d.jpg 48 LAS Unit 1 SBLC-e.jpg 49 LAS Unit 1 SBLC-f.jpg 50 LAS Unit 1 SBLC-g.jpg 51 LAS Unit 1 SBLC-h.jpg 52 LAS Unit 1 SBLC-i.jpg 53 LAS Unit 1 SBLC-j.jpg 54 LAS Unit 1 SBLC-k.jpg 55 LAS Unit 1 SBLC-l.jpg 56 LAS Unit 2 SBLC-a.jpg 57 LAS Unit 2 SBLC-b.jpg 58 LAS Unit 2 SBLC-c.jpg 59 LAS Unit 2 SBLC-d.jpg 60 LAS Unit 2 SBLC-e.jpg 61 LAS Unit 2 SBLC-f.jpg

Item No. Description 62 LAS Unit 2 SBLC-g.jpg 63 LAS Unit 2 SBLC-h.jpg 64 LAS Unit 2 SBLC-i.jpg 65 LAS Unit 2 SBLC-j.jpg 66 LAS Unit 2 SBLC-k.jpg 67 LAS Unit 2 SBLC-l.jpg 68 LAS Unit 2 SBLC-m.jpg 69 LaSalle 50-69 NRC Audit - APLC Q Responses_SEISMIC_06-12-2020.docx 70 LaSalle 50-69 Seismic Correlation Trial System Selection (SBLC)_Rev 0.docx 71 LaSalle FO Closure FINAL REPORT 2019-11-13.pdf 72 LaSalle SBLC SSCs for 50.69 Tier 2 Correlation Study.xlsx 73 LS 50.69 APLA-04 Importance Measures - 2020_06_04.xlsx 74 LS-PSA-021.07.02 Fire Modeling Treatments Notebook Rev 3 (Word Only).pdf 75 LS-PSA-021.09 Fire HRA Notebook Rev 3 (Word Only).pdf 76 M-145, Rev AF, Standby Liquid Control.tif 77 M-173, Rev G, Rx Bldg Piping Plan El 820-6.tif 78 M-238, Rev H, Rx Bldg Piping Upr Sect A-A.tif 79 M-942, Sheet 1, Rev L, Standby Liquid Control.tif 80 M-942, Sheet 2, Rev S, Standby Liquid Control.tif 81 Seismic Alt Tier 2 - Correlation Pilot Study_06-16-2020.docx 82 Seismic Alt Tier 2 - Correlation Pilot Study_06-18-2020.docx B) FOR TSTF-505 PORTION OF THE AUDIT Item No. Description 1 001, Circuit Breakers.pdf 2 1E-0-4412AA.tiff 3 1E-1-4000PG.tiff 4 1E-1-4000PJ.tiff 5 1E-1-4000PK.tiff 6 1E-1-4005AM.tiff 7 1E-1-4005AS.tiff 8 1E-1-4005AT.tiff 9 1E-1-4005CR.tiff 10 1E-1-4005CT.tiff 11 1E-1-4005CU.tiff 12 1E-1-4009AA.tiff 13 1E-1-4011ND.tiff 14 1E-1-4220AB.tiff 15 1E-1-4220AC.tiff 16 1E-1-4220AD.tiff 17 1E-1-4220AH.tiff 18 1E-1-4220AJ.tiff 19 1E-1-4220AK.tiff 20 1E-1-4220AL.tiff

Item No. Description 21 1E-1-4220AM.tiff 22 1E-1-4220CA.tiff 23 1E-1-4221AA.tiff 24 1E-1-4221AD.tiff 25 1E-1-4223AB.tiff 26 1E-1-4223AC.tiff 27 1E-1-4343AA.tiff 28 1E-1-4343AB.tiff 29 1E-1-4343AC.tiff 30 1E-1-4343AK.tiff 31 1E-1-4343AM.tiff 32 1E-1-4345AA.tiff 33 1E-1-4345AB.tiff 34 1E-1-4345AC.tiff 35 1E-1-4345AK.tiff 36 1E-1-4345AM.tiff 37 1E-1-4346AA.tiff 38 1E-1-4346AB.tiff 39 1E-1-4615AA.tiff 40 1E-1-4615AB.tiff 41 1E-1-4621AA.tiff 42 1E-1-4621AB.tiff 43 1E-1-4623AA.tiff 44 1E-1-4623AB.tiff 45 002, Transformers.pdf 46 003, Switchyard.pdf 47 3.6.4.3 Standby Gas Treatment (SGT) System.pdf 48 3.7.4 Control Room Area Filtration (CRAF) System.pdf 49 3.7.5 Control Room Area Ventilation Air Conditioning (AC) System.pdf 50 3.8.1 AC Sources - Operating.pdf 51 3.8.2 AC Sources - Shutdown.pdf 52 3.8.4 DC Sources - Operating.pdf 53 3.8.5 DC Sources - Shutdown.pdf 54 3.8.6 Battery Parameters.pdf 55 3.8.7 Distribution Systems - Operating.pdf 56 3.8.8 Distribution Systems - Shutdown.pdf 57 004, Relay House.pdf 58 005, AC Distribution.pdf 59 006, DC Distribution.pdf 60 007, 12 KV Distribution.pdf 61 008, Main Gen and Excitation.pdf 62 009, Main Generator Auxiliaries.pdf 63 011, Emergency Diesel Generators.pdf 64 012, TSC Security DG and UPSs.pdf 65 50.69 APLA-08 Response - FLEX - Rev1 - 2020_06_17 (Clean).pdf 66 B 3.8.1 AC Sources - Operating.pdf

Item No. Description 67 B 3.8.2 AC Sources - Shutdown.pdf 68 Diesel AOT Amendment.pdf 69 Electrical and I and C AND ALPA LaSalle Input.docx 70 ER-AA-600-1052 RM RICT Support R1.pdf 71 Fire HRA Notebook R3 Final LS-PSA-021.09.pdf 72 General Discussion Topic, Seasonal Variations 06-12-20.pdf 73 Item 1 - LaSalle April 2017 FPIE FO Closure Report June 2017.pdf 74 Item 1 - LaSalle FO Closure and FSPR Report-03-25-19 Final Signed.pdf 75 Item 1 - LaSalle FPIE Peer Review Report - Final.pdf 76 Item 1 - LaSalle FPRA Peer Review Report Final.pdf 77 Item 2 - LS-PSA-013 Summary.pdf 78 Item 2 - LS-PSA-021.12 Uncert and Sensitivity Notebook Rev 3 Final.pdf 79 Item 3 - LS-MISC-046 PRA Uncertainty Evaluation for RI Applications Rev 1 Final.pdf 80 Item 4 - LS-LAR-12 Rev 1 signed.pdf 81 Item 5 - LS-ASM-03.pdf 82 Item 6 - LaSalle FO Closure and FSPR Report-03-25-19 Final Signed.pdf 83 Item 6 - LaSalle FPRA Peer Review Report Final.pdf 84 Item 6 - LS-PSA-021.11 Summary and Quantification NB Rev 3 Final.pdf 85 Item 8 - LOP Drawings.zip 86 Item 8 - TS Bases - IC.zip 87 Item 8 B 3.3.1.1 Reactor Protection System (RPS) Instrumentation.pdf 88 Item 8 B 3.3.4.2 Anticipated Transient Without Scram Recirculation Pump Trip (ATWS-RPT)

Instrumentation.pdf 89 Item 8 B 3.3.5.1 Emergency Core Cooling System (ECCS) Instrumentation.pdf 90 Item 8 B 3.3.5.3 Reactor Core Isolation Cooling (RCIC) System Instrumentation.pdf 91 Item 8 B 3.3.6.1 Primary Containment Isolation Instrumentation.pdf 92 Item 8 B 3.3.8.1 Loss of Power (LOP) Instrumentation.pdf 93 Item 8B 3.3.2.2 Feedwater System and Main Turbine High Water Level Trip Instrumentation.pdf 94 Item 9-1E-0-4000 Rev.K.tif 95 Item 9-1E-0-4000B Rev.H.tif 96 Item 9-1E-1-4000A Rev.T.tif 97 Item 9-1E-1-4000B Rev.N.tif 98 Item 9-1E-1-4000C Rev.A.tif 99 Item 9-1E-1-4000D Rev.A.tif 100 Item 9-1E-1-4000E Rev.A.tif 101 Item 9-1E-1-4000W Rev.E.tif 102 Item 9-1E-2-4000A Rev.V.tif 103 Item 9-1E-2-4000B Rev.N.tif 104 Item 9-1E-2-4000C Rev.A.tif 105 Item 9-1E-2-4000D Rev.A.tif 106 Item 9-1E-2-4000E Rev.A.tif 106 Item 9-1E-2-4000W Rev.C.tif 108 Item 11 - 141Y UV Alarm Response Procedure.pdf 109 Item 11 -142Y UV Alarm Response Procedure.pdf 110 Item 11 -143 UV Alarm Response Procedure.pdf 111 Item 11 -Switchgear 141Y Schematic.tif

Item No. Description 112 Item 11 -Switchgear 142Y Schematic.tif 113 Item 11 -Switchgear 143Y Schematic.tif 114 Item 11 -TS 3.3.8.1 Bases.pdf 115 Item 11 -UFSAR Section 8.2.pdf 116 Item10 - M-87 Drawing.pdf 117 Item10 -M-134 Drawing.pdf 118 Item10 -UFSAR Figure 2.5-59.pdf 119 Item10 -UFSAR Section 9.2.pdf 120 LaSalle FO Closure FINAL REPORT 2019-11-13.pdf 121 LaSalle RICT Audit Item 9.docx 122 LaSalle RICT Audit Item 10.docx 123 LaSalle RICT Audit Item 11.docx 124 LOA-DC-101.pdf 125 LS-PSA-021.02 Equipment Selection Notebook Rev 3 Final.pdf 126 LS-PSA-021.06 Fire Ignition Frequency NB Rev 2 - Final.pdf 127 LS-PSA-021.07.02 Fire Modeling Treatments Notebook Rev 3 (Word Only).pdf 128 LS-PSA-021.10 Walkdown Notebook Rev 3 Final.pdf 129 OP-AA-108-118 REV 1.pdf 130 RICT APLA 7 Response - System Surrogate Modeling 06-15-20.pdf 131 RICT APLA-01 Response - FPIE PRA Self-Assessment - Rev0 06-12-20.pdf 132 RICT APLA-02 Response - Fire F and Os - Rev0 06-12-20.pdf 133 RICT APLA-03 Response - Fire Methodologies - Rev1 - 2020_06_17 (Clean).pdf 134 RICT APLA-04 Response - PRA Model Update Process - Rev0A 06-15-20.pdf 135 RICT APLA-05 Response - Shared Systems 06-15-20.pdf 136 RICT APLA-06 Response - I and C - Rev0 - DRAFT 16-20.pdf 137 RICT APLA-09 Response - Uncertainty Analysis Process - Rev0 06-12-20.pdf 138 RICT APLA-09 Response - Uncertainty Analysis Process - Rev1 - 2020_06_16 (Clean).pdf 139 RICT APLA-10 Response - Uncertainty Analysis Treatment - Rev0 06-12-20.pdf 140 RICT APLA-10 Response - Uncertainty Analysis Treatment - Rev1 - 2020_06_16 (Clean).pdf 141 RICT APLA-11 Response - SOKC Uncertainty - Rev1 - 2020_06_16 (Clean).pdf 142 RICT APLA-12 Response - Key Principles 06-12-20.pdf 143 RICT APLC-01 External Flood response Revision B 06-12-20.pdf 144 RICT APLC-01 HW RevA 06-12-20.pdf 145 RICT APLC-01 Turb Missile Response Revision C 06-12-20.pdf 146 RICT EEOB-01 PRA Response 06-12-20.pdf 147 RICT EEOB-02 Instrumentation PRA Response 06-12-20.pdf 148 RICT EEOB-03 PRA Response - DC Modeling - Rev0 06-12-20.pdf 149 RICT EICB-01 PRA Response 06-12-20.pdf 150 UFSAR Chapter 08.1.pdf 151 UFSAR Chapter 08.3 Onsite Power Systems.pdf 152 UFSAR Chapter 15.9.pdf

ML20248H494

• by email OFFICE NRR/DORL/LPL3/PM* NRR/DORL/LPL3/LA* NRR/DRA/APLA/BC* NRR/DRA/APLC/BC*

NAME BVaidya SRohrer (JBurkhardt for) RPascarelli SRosenberg DATE 9/10/2020 9/10/2020 09/17/2020 09/17/2020 OFFICE NRR/DNRL/NPHP/BC* NRR/DEX/EICB/BC* NRR/DEX/EEOB/BC* NRR/DSS/STSB/BC*

NAME MMitchell MWaters BTitus VCusumano(CTilton for)

DATE 09/17/2020 09/17/2020 09/17/2020 09/17/2020 OFFICE NRR/DORL/LPL3/BC* NRR/DORL/LPL3/PM*

NAME NSalgado(RKuntz for) BVaidya DATE 09/21/2020 09/21/2020