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Category:E-Mail
MONTHYEARML23348A1222023-12-14014 December 2023 NRR E-mail Capture - Grand Gulf, River Bend, and Waterford, Unit 3 - 2nd Round of Official RAIs for RR EN-RR-22-001, Use ASME Code Case N-752, Risk Informed Categorization for Class 2 and 3 Systems ML23097A0412023-04-0606 April 2023 June 2023 Emergency Preparedness Exercise Inspection - Request for Information ML23076A0552023-03-13013 March 2023 EP Program Inspection RFI Hjs 10132022 ML23072A3672023-03-0909 March 2023 NRR E-mail Capture - Entergy Fleet - Acceptance Review of Quality Assurance Program Manual Reduction in Commitment ML23052A0882023-02-17017 February 2023 Inspection Request for Information ML22335A4802022-12-0101 December 2022 NRR E-mail Capture - NRC Update Completion Date for Waterford 3 LAR to Adopt TSTF-505 ML22336A0202022-12-0101 December 2022 NRR E-mail Capture - Acceptance Review for Waterford Unit 3 - License Amendment Request to Revise Technical Specification 3/4.3.2 ML22329A0152022-11-0202 November 2022 NRR E-mail Capture - NRC Update Completion Date for Waterford 3 LAR to Adopt TSTF-505 ML22290A0442022-10-13013 October 2022 December 2022 Emergency Preparedness Program Inspection - Request for Information ML22215A2062022-08-0303 August 2022 NRR E-mail Capture - Waterford 3 - LAR to Adopt Title 10 of the Code of Federal Regulations, Section 50.69: Loe and Completion Date Update ML22215A1492022-08-0303 August 2022 NRR E-mail Capture - Waterford 3 - LAR to Permit the Use of Risk-Informed Completion Times in Accordance with Technical Specifications Task Force (TSTF) Traveler TSTF-505, Revision 2 ML22206A0172022-07-22022 July 2022 NRR E-mail Capture - Request for Additional Information: Waterford 3 - License Amendment Requests to Adopt 10 CFR 50.69 and TSTF-505 ML22206A0152022-07-21021 July 2022 NRR E-mail Capture - Entergy (Grand Gulf, River Bend, and Waterford-3) - Acceptance Review of the RR EN-RR-22-001, Case N-752, Risk-informed Cat & Treatment for Repair/Replacement Activities in Class 2 & 3 Systems ML22209A1082022-07-15015 July 2022 NRR E-mail Capture - Draft RAIs to License Amendment Request for Application to Adopt 10 CFR 50.69 and Revise Technical Specifications to Adopt TSTF-505, Revision 2 ML22144A1662022-05-24024 May 2022 PI&R Request for Information and Transmittal e-mail ML22108A1792022-04-14014 April 2022 WF3 Cpcs Installation Inspection Plan Email ML22209A1062022-01-20020 January 2022 NRR E-mail Capture - (External_Sender) Options Moving Forward Regarding Waterford TSTF-505 and 50.69 ML22209A1052022-01-0606 January 2022 NRR E-mail Capture - Estimate for Completion of 50.69-TSTF-505 Peer Review ML22012A1592022-01-0505 January 2022 WF3 2022 EP Exercise Inspection RFI Sdh 010522 ML21356A5872021-12-22022 December 2021 NRR E-mail Capture - Acceptance for Review: Waterford 3 - Proposed Revision to Reactor Vessel Surveillance Capsule Withdrawal Schedule ML21349A2242021-12-14014 December 2021 NRR E-mail Capture - (External_Sender) Waterford 3 - Request for One-Time Exemption from 10 CFR 50, Appendix E Biennial EP Exercise ML21312A4792021-11-0505 November 2021 Email: NRC Staff Preliminary Questions Regarding X Energy LLC Xe-100 Topical Report: Risk-Informed Performance-Based Licensing Basis Development ML21308A5602021-11-0404 November 2021 NRR E-mail Capture - Arkansas Nuclear One, Units 1 and 2, Grand Gulf, River Bend, and Waterford, Unit 3 - Acceptance Review of LAR to Adopt TSTF-554, Revise Reactor Coolant Leakage Requirements ML21292A0112021-10-18018 October 2021 NRR E-mail Capture - ANO, 1 and 2, Grand Gulf, River Bend, Waterford, 3 - Acceptance Review of LAR to Adopt TSTF-541, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position ML21280A0812021-10-0505 October 2021 Email 10-5-21 - Request for Information_ Waterford EP Inspection (71114.04 & 71151) - Nov-Dec 2021 ML21285A0242021-10-0505 October 2021 Digital Instrumentation and Control Modification Inspection Request for Information ML22112A1512021-08-0606 August 2021 NRR E-mail Capture - for Review: Draft RAIs to LAR to Relocate Chemical Detection Systems Technical Specifications (TS) to Technical Requirements Manual (TRM) ML21216A4562021-08-0404 August 2021 WF3 2021 EP Exercise Inspection Request for Information (RFI) ML21218A0402021-07-26026 July 2021 NRR E-mail Capture - Final RAIs to Entergy Operations, Waterford Steam Electric Station, Unit 3 LAR to Adopt 10 CFR 50.69 ML21201A0062021-07-19019 July 2021 NRR E-mail Capture - Arkansas Nuclear One, Units 1 and 2, and Waterford, Unit 3 - Acceptance Review of LAR to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections ML21173A1082021-06-22022 June 2021 NRR E-mail Capture - Acceptance Review for Waterford Unit 3 - License Amendment Request to Adopt TSTF-563 ML21174A0342021-06-22022 June 2021 NRR E-mail Capture - Entergy Fleet (ANO, Ggulf, Rbend, & Waterford) - Acceptance Review for Relief Request to Use a Provision of a Later Edition of the ASME Code, Section XI for Periodic System Pressure Tests Exemptions ML21160A0852021-06-0404 June 2021 NRR E-mail Capture - (External_Sender) NRC Notification to the State of Louisiana Regarding a Waterford Steam Electric Station, Unit 3 Amendment - Digital Upgrade I&C ML21145A0062021-05-24024 May 2021 NRR E-mail Capture - Supplement Received - Waterford Unit 3 - License Amendment Request for Boration Systems Tech Specs ML21120A1192021-04-30030 April 2021 NRR E-mail Capture - Acceptance Review for Waterford Unit 3 - LAR to Relocate Chemical Detection TSs to TRM ML21105A0512021-04-14014 April 2021 4-14-21 Email - RFI for In-Office Inspection of Recent WF3 Submission of EAL Procedure Revision ML21104A0382021-04-13013 April 2021 NRR E-mail Capture - Acceptance Review for Waterford Unit 3 - License Amendment Request for TSTF-505 ML21084A2552021-03-22022 March 2021 NRR E-mail Capture - Supplement to Audit Plan Dated October 1, 2020 (Waterford 3, L-2020-LLA-0164) ML21088A1512021-03-15015 March 2021 NRR E-mail Capture - Draft Waterford Acceptance Review Letter for TSTF-505 LAR ML21069A1842021-03-0202 March 2021 NRR E-mail Capture - Announcement of QA Inspection ML21040A3892021-02-0808 February 2021 NRR E-mail Capture - Announcement of QA Inspection ML21039A6412021-01-28028 January 2021 NRR E-mail Capture - NRC LIC-109 Acceptance Review Results for Waterford 3 50.69 LAR ML21022A1692021-01-22022 January 2021 NRR E-mail Capture - Entergy Fleet (ANO, Grand Gulf, River Bend, and Waterford) - Acceptance Review for RR EN-20-RR-003, Proposed Alternative to Use ASME Code Case N-711-2 ML20329A1442020-11-20020 November 2020 Terrapower QAPD Preliminary Questions Email ML20288A2082020-10-0808 October 2020 8Oct2020 Email - Request for Information (RFI) to Support and Prepare for the Emergency Preparedness (EP) Program Inspection at the Waterford 3 Station Scheduled to Occur the Week of December 7, 2020 ML20289A3502020-10-0505 October 2020 NRR E-mail Capture - NRC Request for Additional Information - WF3 EAL Scheme Change - L-2020-LLA-0122 ML20239B0552020-08-26026 August 2020 NRR E-mail Capture - NRC LIC-109 Acceptance Review Results for Waterford U3 Digital Upgrade LAR ML20197A3122020-07-14014 July 2020 NRR E-mail Capture - NRC Notification of State of Louisiana Re. Waterford Steam Electric Station License Amendments - Changes to Technical Specifications ML20191A0172020-06-26026 June 2020 NRR E-mail Capture - NRC LIC-109 Acceptance Review Results for Waterford U3 EAL Scheme Change LAR ML20093C3072020-04-0101 April 2020 NRR E-mail Capture - (External_Sender) Entergy Fleet - Performance-Based Cyber Security Testing Plan Fee Waiver Response Letter (EPID P-2020-PRF-0000; CAC No. 001648) 2023-04-06
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML23348A1222023-12-14014 December 2023 NRR E-mail Capture - Grand Gulf, River Bend, and Waterford, Unit 3 - 2nd Round of Official RAIs for RR EN-RR-22-001, Use ASME Code Case N-752, Risk Informed Categorization for Class 2 and 3 Systems ML23191A4562023-07-10010 July 2023 Notification of Comprehensive Engineering Team Inspection (050003822023010) and Request for Information ML23097A0412023-04-0606 April 2023 June 2023 Emergency Preparedness Exercise Inspection - Request for Information ML23076A0552023-03-13013 March 2023 EP Program Inspection RFI Hjs 10132022 ML23052A0882023-02-17017 February 2023 Inspection Request for Information ML22290A0442022-10-13013 October 2022 December 2022 Emergency Preparedness Program Inspection - Request for Information ML22206A0172022-07-22022 July 2022 NRR E-mail Capture - Request for Additional Information: Waterford 3 - License Amendment Requests to Adopt 10 CFR 50.69 and TSTF-505 ML22209A1082022-07-15015 July 2022 NRR E-mail Capture - Draft RAIs to License Amendment Request for Application to Adopt 10 CFR 50.69 and Revise Technical Specifications to Adopt TSTF-505, Revision 2 ML22103A1712022-04-13013 April 2022 LAR to Revise TS to Adopt TSTF-505_NRC Request for Additional Information ML22012A1592022-01-0505 January 2022 WF3 2022 EP Exercise Inspection RFI Sdh 010522 ML21280A0812021-10-0505 October 2021 Email 10-5-21 - Request for Information_ Waterford EP Inspection (71114.04 & 71151) - Nov-Dec 2021 ML21285A0242021-10-0505 October 2021 Digital Instrumentation and Control Modification Inspection Request for Information ML22112A1512021-08-0606 August 2021 NRR E-mail Capture - for Review: Draft RAIs to LAR to Relocate Chemical Detection Systems Technical Specifications (TS) to Technical Requirements Manual (TRM) ML21216A4562021-08-0404 August 2021 WF3 2021 EP Exercise Inspection Request for Information (RFI) ML21218A0402021-07-26026 July 2021 NRR E-mail Capture - Final RAIs to Entergy Operations, Waterford Steam Electric Station, Unit 3 LAR to Adopt 10 CFR 50.69 ML21196A5302021-07-19019 July 2021 Wat 2021010 RFI Letter 21N_05 Gap ML21195A0692021-07-13013 July 2021 Staton, Unit 3 - Notification of Digital Instrumentation and Control Modification Inspection and Request for Information ML21125A6522021-05-0606 May 2021 Wat 2021003 Brq RFI- Md, Waterford Steam Electric Station, Unit 3, Notification of Inspection (NRC Inspection Report 05000382/2021003) and Request for Information ML21112A2542021-04-29029 April 2021 Request for Additional Information Digital Upgrade to the Core Protection and Control Element Assembly Calculator System (EPID L 2020 Lla 0164) - Redacted Version ML20288A2082020-10-0808 October 2020 8Oct2020 Email - Request for Information (RFI) to Support and Prepare for the Emergency Preparedness (EP) Program Inspection at the Waterford 3 Station Scheduled to Occur the Week of December 7, 2020 ML20289A3502020-10-0505 October 2020 NRR E-mail Capture - NRC Request for Additional Information - WF3 EAL Scheme Change - L-2020-LLA-0122 ML20125A3212020-05-0404 May 2020 WAT2020410 Inspection Document Request ML20086M3852020-04-0101 April 2020 Request for Additional Information Regarding License Amendment Request to Revise Technical Specification 3/4 8.1, A.C. Sources Operating W3F1-2020-0014, Response to U. S. Nuclear Regulatory Commission Request for Additional Information Regarding Application for Technical Specification Change to Control Room Air Conditioning System2020-03-20020 March 2020 Response to U. S. Nuclear Regulatory Commission Request for Additional Information Regarding Application for Technical Specification Change to Control Room Air Conditioning System ML20049A4102020-02-20020 February 2020 Request for Additional Information Regarding License Amendment Request to Revise Surveillance Requirement 4.7.6.1.d, Control Room Air Filtration System ML19262H0362019-09-0404 September 2019 Ti 2515/194 Request for Information and Email ML19274D4932019-07-24024 July 2019 Request for Information IR 05000382 2019-003 Occupational Radiation Safety Inspection ML19203A0062019-07-19019 July 2019 NRR E-mail Capture - Waterford 3 - Final Request for Additional Information (Rais) Re Relief Request WF3-RR-19-2: Alternate Repair of Degraded Drain Line of Chemical and Volume Control System ML19151A6102019-06-0404 June 2019 Non-Proprietary Second Round RAI Regarding License Amendment Request for Use of the Tranflow Code for Determining Pressure Drops Across the Steam Generator Secondary Side Internal Components ML19172A0852019-05-24024 May 2019 NRR E-mail Capture - Waterford 3 - Final Request for Additional Information (Rais) Re Relief Request W3-ISI-032: Volumetric Examination Requirements ML19035A0412019-02-0101 February 2019 NRR E-mail Capture - Waterford 3 - Final Request for Information Regarding Relief Request WF3-RR-19-001 for Application of Dissimilar Metal Weld Full Structural Weld Overlay ML19018A0102019-01-28028 January 2019 Request for Additional Information Regarding License Amendment Request for Revision of Technical Specification 3/4.7.4,Ultimate Heat Sink ML18320A0902018-11-26026 November 2018 Request for Additional Information Regarding License Amendment Request for Use of the Transflow Code for Determining Pressure Drops Across the Steam Generator Secondary Side Internal Components ML18318A4352018-11-14014 November 2018 NRR E-mail Capture - Waterford 3 - Final Request for Additional Information Regarding Request for Alternative to ASME Code Case N-770-2 ML18299A0862018-11-0707 November 2018 Draft Request for Additional Information License Amendment Request Regarding the Revision of UFSAR Section 3.9 ML18262A0412018-09-25025 September 2018 Request for Additional Information Regarding License Amendment Request to Revise Section 15.4.3.1 of the Waterford 3 Updated Final Safety Analysis Report to Account for Fuel Misload ML18145A2652018-06-0101 June 2018 Supplemental Information Needed for Acceptance of Request for Licensing Action Use of Tranflow Code for Determining Pressure Drops Across Steam Generator Secondary Side Components ML18085A6942018-03-26026 March 2018 Ref: Waterford Steam Electric Station, Unit 3, License Renewal Application - RAI Set 18 ML18058A0572018-02-23023 February 2018 Enclosurequest for Additional Information (Letter to J. Giddens Request for Additional Information Regarding Entergy Operations, Inc.'S Decommissioning Funding Plan Update) ML18039A9722018-02-0808 February 2018 Notification of Evaluations of Changes, Tests, and Experiments Inspection (05000382/2018002) and Request for Information ML17233A2402017-08-14014 August 2017 NRR E-mail Capture - Draft RAI for Waterford Unit 3 Regarding License Amendment Request to Adopt TSTF-501 Relocate Stored Fuel Oil and Lube Oil Volume Values to Licensee Control ML17170A3012017-06-16016 June 2017 Notification of Inspection (NRC Integrated Inspection Report 05000382/2017003) and Request for Information ML17101A4432017-04-17017 April 2017 Requests for Additional Information for the Review of the Waterford Steam Electric Station, Unit 3, License Renewal Application - Set 17 ML17086A5852017-03-28028 March 2017 Request for Additional Information for the Environmental Review of Waterford 3 ML17072A0102017-03-14014 March 2017 Requests for Additional Information for the Review of the Waterford Steam Electric Station, Unit 3, License Renewal Application Set - 15 ML17272A3352017-03-0101 March 2017 Request for Additional Information for the Review of the Waterford Steam Electric Station, Unit 3, License Renewal Application - Set 14 ML17040A5382017-02-14014 February 2017 Requests for Additional Information for the Review of the Waterford Steam Electric Station, Unit 3, License Renewal Application - Set 13 ML17018A3592017-01-26026 January 2017 Requests For Additional Information For The Review Of The Waterford Steam Electric Station, Unit 3, License Renewal Application Set 12 (CAC MF7492.) ML16354A1052016-12-27027 December 2016 RAI License Amendment Request to Revise TS 3/4.3.2 to Relocate Surveillance Frequency Requirements for Engineered Safety Feature Actuation System (ESFAS) Subgroup Relays to the Surveillance Frequency Control Program ML16356A5942016-12-19019 December 2016 NRR E-mail Capture - MF8325 Draft RAIs Regarding the License Amendment Request to Revise the Table Notation for Table 4.3-2, ESFAS Surveillance Requirements 2023-07-10
[Table view] |
Text
From: Drake, Jason Sent: Friday, July 22, 2022 7:52 AM To: Lewis, John Cc: Mackaman, Clyde D; Couture III, Philip; HARRIS, ALAN J; Gaston, Ronald William; Mahan, Cecil; Dixon-Herrity, Jennifer; Pascarelli, Bob; Waters, Michael
Subject:
Request for Additional Information: Waterford 3 - License Amendment Requests to Adopt 10 CFR 50.69 and TSTF-505 Attachments: Waterford TSTF-505 and 50.69 RAIs_07222022.docx Importance: High
- John, By letters dated December 18, 2020, and February 8, 2021 (ML20353A433 and ML21039A648, respectively), as supplemented by letters dated April 25, 2022, April 8, 2021, and May 16, 2022 (ML22115A062, ML21098A262, and ML22136A310, respectively), Entergy Operations, Inc (Entergy, the licensee) submitted license amendment requests (LARs or applications) for the use of a risk-informed process for the categorization and treatment of structures, systems, and components and the risk-informed completion time (RICT) program at Waterford Steam Electric Station, Unit 3 (Waterford 3), respectively. The LAR dated December 18, 2020 would modify the Waterford 3 licensing basis, by the addition of a license condition, 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 for nuclear power reactors. The LAR dated February 8, 2021, would modify technical specification (TS) requirements to permit the use of RICTs with the implementation of Nuclear Energy Institute (NEI) 06-09, Revision 0-A, Risk-Informed Technical Specifications Initiative 4b: Risk-Managed Technical Specifications (RMTS) Guidelines.
The U.S. Nuclear Regulatory Commission (NRC) staff reviewed the LARs, as supplemented and determined that additional information is needed to complete its review. The NRC staffs request additional information (RAI) is listed attached and officially transmitted via this email.
Per the July 21, 2022, clarification call held between the NRC and the licensee it was confirmed that no proprietary information is contained in the RAI document, the questions are understandable, and the regulatory basis is clear. As agreed to in the clarification call, a response is expected within 30 days from the receipt of this email.
- Regards, Jason Drake Project Manager Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Phone: (301) 415-8378
Hearing Identifier: NRR_DRMA Email Number: 1721 Mail Envelope Properties (MN2PR09MB5610FD5DB8E2A0D98688F250FB909)
Subject:
Request for Additional Information: Waterford 3 - License Amendment Requests to Adopt 10 CFR 50.69 and TSTF-505 Sent Date: 7/22/2022 7:51:40 AM Received Date: 7/22/2022 7:51:00 AM From: Drake, Jason Created By: Jason.Drake@nrc.gov Recipients:
"Mackaman, Clyde D" <cmackam@entergy.com>
Tracking Status: None "Couture III, Philip" <pcoutur@entergy.com>
Tracking Status: None "HARRIS, ALAN J" <aharris@entergy.com>
Tracking Status: None "Gaston, Ronald William" <rgasto1@entergy.com>
Tracking Status: None "Mahan, Cecil" <cmahan@entergy.com>
Tracking Status: None "Dixon-Herrity, Jennifer" <Jennifer.Dixon-Herrity@nrc.gov>
Tracking Status: None "Pascarelli, Bob" <Robert.Pascarelli@nrc.gov>
Tracking Status: None "Waters, Michael" <Michael.Waters@nrc.gov>
Tracking Status: None "Lewis, John" <jlewis8@entergy.com>
Tracking Status: None Post Office: MN2PR09MB5610.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 2040 7/22/2022 7:51:00 AM Waterford TSTF-505 and 50.69 RAIs_07222022.docx 39027 Options Priority: High Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST FOR APPLICATION TO ADOPT 10 CFR 50.69, RISK-INFORMED CATEGORIZATION AND TREATMENT OF STRUCTURE, SYSTEMS AND COMPONENTS FOR NUCLEAR POWER REACTORS AND LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-505, REVISION 2, PROVIDE RISK INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4b ENTERGY OPERATIONS, INC.
WATERFORD STEAM ELECTRIC STATION, UNIT 3 DOCKET NO. 50-382 By letters dated December 18, 2020, and February 8, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML20353A433 and ML21039A648, respectively), as supplemented by letters dated April 25, 2022, April 8, 2021, and May 16, 2022 (ADAMS Accession No. ML22115A062, ML21098A262, and ML22136A310, respectively),
Entergy Operations, Inc (Entergy, the licensee) submitted license amendment requests (LARs or applications) for the use of a risk-informed process for the categorization and treatment of structures, systems, and components and the risk-informed completion time (RICT) program at Waterford Steam Electric Station, Unit 3 (Waterford 3), respectively. The LAR dated December 18, 2020 would modify the Waterford 3 licensing basis, by the addition of a license condition, 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 for nuclear power reactors. The LAR dated February 8, 2021, would modify technical specification (TS) requirements to permit the use of RICTs with the implementation of Nuclear Energy Institute (NEI) 06-09, Revision 0-A, Risk-Informed Technical Specifications Initiative 4b: Risk-Managed Technical Specifications (RMTS) Guidelines.
The U.S. Nuclear Regulatory Commission (NRC) staff reviewed the LARs, as supplemented and determined that additional information is needed to complete its review. The NRC staffs request additional information (RAI) is listed below.
Division of Risk Assessment (DRA)
Probabilistic Risk Assessment (PRA) Licensing Branch A (APLA) Questions APLA RAI 01 (Supplement) - Open Internal Events PRA Facts and Observations (F&O)
In attachment 3 of the April 25, 2022, supplement and enclosure 1 of the May 16, 2022, supplement, the licensee stated that subsequent to the LAR submittals that a focused-scope peer review was conducted on human reliability supporting requirements (SRs) in December 2021 that resulted in four open F&Os. Tables A3-2 and E2-2 of each supplement, respectively, identifies and provides dispositions to these four F&Os.
a) F&O HR 7-1 related to SR HR-G6 not met, regarding reasonableness checks for post-initiator human error probability (HEP) quantifications, identified that plant history and
experience do not appear to have been considered in the review of post-initiator human failure events (HFEs) and their final HEPs. The licensee stated in the disposition that this review was performed in its previous cutset review process that included operational personnel. However, the licensee did not describe how the cutset review specifies, as part of its reasonableness check of the human failure probability, review of plant history and experience in accordance with the requirement of the 2009 American Society of Mechanical Engineers/American Nuclear Society (ASME/ANS) PRA Standard SR HR-G6.
- i. Provide details on how the cutset review process included review of both plant history and experience and were assessed to meet SR HR-G6.
ii. Alternatively, to part (i), propose a mechanism to resolve the F&O using an accepted NRC process (U.S. Nuclear Regulatory Commission Acceptance on Nuclear Energy Institute Appendix X to Guidance 05-04, 07-12, and 12-13, Close-out of Facts and Observations (F&Os); ML17079A427), prior to the implementation of the 10 CFR 50.69 categorization process and the RICT.
b) F&O HR 7-4 related to SR HR-I2 not met, identified a general issue with discrepancies between parts of the human reliability analysis (HRA) notebook and the data analysis notebook. Additionally, the peer review team noted a lack of documentation supporting the licensees pre-initiator HRA analysis. Documentation also appears to be an issue for the HRA post-initiator analysis noting a lack of basis for the analysis in the HRA calculator. The licensee states in the disposition that this is only a documentation issue and does not impact the application. Associated F&Os HR 1-2 (related to SR HR-C2) and HR 7-3 (related to SR HR-I1) appear to identify similar concerns. The NRC staff notes that with no apparent documentation supporting the licensees HRA analysis, it is unclear how the HRA meets the applicable SR from the 2009 ASME/ANS PRA Standard.
- i. Provide details of how the Waterford 3 HRA analysis is in alignment with approved PRA standards. Specifically:
- a. Explain how the licensee ensured consistency between the data analysis notebook and HRA notebook.
- b. Explain how the review of the pre-initiator HFEs for impact to multiple trains or systems was performed and whether additional mechanisms were discovered.
- c. Explain the licensees approach to ensure consistency between the HRA calculator and HRA notebook. In the response, address the specific examples identified in the F&O by the peer review team.
ii. Alternatively, to part (i), propose a mechanism to resolve the F&O, using an accepted NRC process (U.S. Nuclear Regulatory Commission Acceptance on Nuclear Energy Institute Appendix X to Guidance 05-04, 07-12, and 12-13, Close-out of Facts and Observations (F&Os)), prior to the implementation of the 10 CFR 50.69 categorization process and the RICT program.
Division of Engineering and External Hazards (DEX)
Instrumentation and Controls Branch (EICB) Questions EICB RAI 01 - Waterford 3 TSTF-505 Audit Item ID 0053 (EICB 1)*
In section 3.1.2.3, Evaluation of Instrumentation and Control Systems, of the TSTF-505 Revision 2, model application, the NRC clarifies the basis of the NRC staffs safety evaluation is to consider a number of potential plant conditions allowed by the new TSs and to consider what redundant or diverse means were available to assist the licensee in responding to various plant conditions. Traveler TSTF-505, Revision 2, states that at least one redundant or diverse means (e.g., other automatic features or manual action) to accomplish the safety functions (e.g.,
reactor trip, safety injection, or containment isolation) remain available during the use of the RICT.
In addition, Regulatory Guide 1.174, Revision 2, An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis.
(ML100910006) states the licensee should assess whether the proposed LB change meets the defense-in-depth principle by not over-relying on programmatic activities as compensatory measures associated with the change in the LB.
Please demonstrate the consistency with the TSTF-505, Revision 2 model SE by identifying the diverse means for each affected Instrumentation and Controls function under each postulated accident.
If the sole diverse mean is identified as manual actuation, please confirm that these manual actuations are modeled in PRA, defined in Waterford 3 operation procedures to which operators are trained, and describe how the completion times associated with these actions are evaluated as adequate.
- The initial response to this question has been placed in the Certrec Portal by the licensee for NRC review. A formal response is now requested to be placed on the docket via the licensees RAI response.