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MONTHYEARML16083A5512016-03-30030 March 2016 Interim Staff Response to Reevaluated Flood Hazards Submitted in Response to 10 CFR 50.54(f) Information Request - Flood-Causing Mechanism Reevaluation Project stage: Other ML16084A6102016-03-30030 March 2016 MSFHI Tables 1&2 Final 3-24-2016 Project stage: Request ML16176A0582016-12-0101 December 2016 NRC Report for the Audit of Pacific Gas and Electric Company'S Flood Hazard Reevaluation Report Submittal Relating to the Near-Term Task Force Recommendation 2.1-Flooding for Diablo Canyon Power Plant, Unit Nos. 1 and 2 (CAC Nos. MF6039 and Project stage: Other DCL-17-064, Plant Focused Evaluation Report for External Flooding2017-07-19019 July 2017 Plant Focused Evaluation Report for External Flooding Project stage: Other ML17341A0652017-11-30030 November 2017 Technical Evaluation Report Diablo Canyon Nuclear Power Plant Tsunami Hazard Reevaluation Review Project stage: Request ML17024A2072017-12-18018 December 2017 Staff Assessment of Response to 10 CFR 50.54(F) Information Request Flood-Causing Mechanism Reevaluation Project stage: Other ML18005A4222018-01-10010 January 2018 Correction to Staff Assessment of Response to 10 CFR 50.54(F) Information Request Flood-Causing Mechanism Reevaluation Project stage: Other 2017-11-30
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Category:Audit Report
MONTHYEARML19214A1192019-08-15015 August 2019 Regulatory Audit Summary for June 18 to June 19, 2019 Audit, Regarding License Amendment Request for Changes to the Intake Structure Physical Security Classification ML18254A0402019-01-22022 January 2019 Staff Review of Seismic Probabilistic Risk Assessment Associated with Reevaluated Seismic Hazard Implementation of the Near Term Task Force Recommendation 2.1: Seismic ML18211A3222018-08-0808 August 2018 Staff Review of Spent Fuel Pool Evaluation Associated with Reevaluated Seismic Hazard Implementation Near-Term Task Force Recommendation 2.1: Seismic ML16176A0582016-12-0101 December 2016 NRC Report for the Audit of Pacific Gas and Electric Company'S Flood Hazard Reevaluation Report Submittal Relating to the Near-Term Task Force Recommendation 2.1-Flooding for Diablo Canyon Power Plant, Unit Nos. 1 and 2 (CAC Nos. MF6039 and ML16279A3432016-10-27027 October 2016 Audit Report for 8/3-4/16, Nrr/Dra/Arcb Regulatory Audit at Westinghouse Facility in Rockville, MD, to Support Review of License Amendment Request for Adoption of Alternative Source Term ML16063A1702016-03-14014 March 2016 Regulatory Audit Report for the January 12-14, 2016 Audit at the Westinghouse Facility in North Bethesda, Maryland, for the License Amendment Request for Alternate Source Term ML16053A3232016-02-23023 February 2016 Audit Report for 01/12-14/2016 Regulatory Audit at Westinghouse Facility to Support Review of License Amendment Request for Revision of the UFSAR for Beacon Methodology ML15345A0932016-01-11011 January 2016 Audit Report Regarding Pacific Gas and Electric Company'S Seismic Site Response Related to the Near-Term Task Force Recommendation 2.1 - Seismic for: Diablo Canyon Power Plant, Units 1 and 2 ML15345A0212016-01-11011 January 2016 Audit Report Regarding Pacific Gas and Electric Company'S Seismic Source Models Related to Near-Term Task Force Recommendation 2.1 - Seismic for Diablo Canyon Power Plant, Unit Nos. 1 and 2 ML15289A3702015-10-30030 October 2015 Report for the Onsite Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Instrumentation Related to Orders EA-12-049 and EA-12-051 ML15223A9682015-09-0202 September 2015 Redacted, Regulatory Audit Report for June 22-26, 2015 Audit at the Westinghouse Facility in Warrendale, PA, to Support Digital Replacement of Process Protection System License Amendment Request (TAC ME7522-ME7523) ML15135A0082015-05-26026 May 2015 Audit of Licensee'S Management of Regulatory Commitments, Audit Performed April 22-May 13, 2015 ML15103A0102015-05-19019 May 2015 Redacted, Regulatory Audit Report for June 3-5, 2014 Audit at the Invensys Operations Management Facility in Lake Forest, CA, to Support Digital Replacement of Process Protection System License Amendment Request ML13018A1492013-03-0404 March 2013 Regulatory Audit Report for 11/13-16/2012 Audit at the Invensys Operations Management Facility in Lake Forest, CA, to Support Digital Replacement of Process Protection System License Amendment Request (TAC ME7522-ME7523) ML1135701102012-01-17017 January 2012 Audit of Licensee'S Management of Regulatory Commitments, Audit Performed October 18-21, 2011 ML1016903212010-08-11011 August 2010 Audit Report for Plant Aging Management Programs for DCPP, Units 1 and 2 ML1018908322010-07-16016 July 2010 Audit Report Regarding the Diablo Canyon Nuclear Power Plant License Renewal Application Scoping and Screening Methodology ML0828003422008-10-22022 October 2008 Audit of Pacific Gas and Electric Company'S Management of Regulatory Commitments (TACs MD9667 and MD9668) ML0517103582005-07-0505 July 2005 Audit of Pacific Gas & Electric'S Management of Regulatory Commitments 2019-08-15
[Table view] Category:Letter
MONTHYEARIR 05000275/20230042024-02-0909 February 2024 Integrated Inspection Report 05000275/2023004 and 05000323/2023004 ML24002B1802024-01-29029 January 2024 LRA Audit Plan DCL-24-010, Nuclear Material Transaction Report for New Fuel2024-01-29029 January 2024 Nuclear Material Transaction Report for New Fuel ML24018A0152024-01-29029 January 2024 License Renewal Application Review Schedule Letter ML24017A2492024-01-24024 January 2024 Letter to Neil Peyron, Chairman, Tule River Tribe, Re. Diablo Canyon ML24024A1752024-01-24024 January 2024 Letter to Tribal Council San Luis Obispo County Chumash Indians on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24003A8902024-01-24024 January 2024 Letter to P. Gerfen - Diablo Canyon Notice of Intent to Conduct Scoping and Prepare an Environmental Impact Statement ML24012A1582024-01-24024 January 2024 Letter to Hon. Violet Sage Walker, Chairwoman Northern Chumash Tribal Council on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24012A0062024-01-24024 January 2024 Achp Scoping Letter for Diablo Canyon License Renewal ML24012A0552024-01-24024 January 2024 Letter to J. Polanco, Shpo, on Request to Initiate Section 106 Consultation and Scooping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24024A1562024-01-24024 January 2024 Letter to Hon. Gabe Frausto, Coastal Band of Chumash Indians on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24024A1652024-01-24024 January 2024 Letter to Hon. Mona Olivas Tucker, Yak Tityu Tityu Yak Tilhini Northern Chumas Indians on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24024A1612024-01-24024 January 2024 Letter Hon. Gary Pierce, Salian Tribe of Monterey and San Luis Obispo Counties on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24012A0362024-01-24024 January 2024 Request to Initiate Section 106 Consultation and Scoping Process for the Environmental Review License Renewal Application DCL-24-009, Nuclear Material Transaction Report for New Fuel2024-01-17017 January 2024 Nuclear Material Transaction Report for New Fuel DCL-24-008, Schedule Considerations for Review of the DCPP License Renewal Application2024-01-17017 January 2024 Schedule Considerations for Review of the DCPP License Renewal Application DCL-24-004, Supplement to License Amendment Request 23-01 Revision to Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2024-01-15015 January 2024 Supplement to License Amendment Request 23-01 Revision to Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b IR 05000275/20230112024-01-12012 January 2024 NRC License Renewal Phase 1 Inspection Report 05000275/2023011 DCL-23-129, Nuclear Material Transaction Report for New Fuel2023-12-27027 December 2023 Nuclear Material Transaction Report for New Fuel ML23326A0122023-12-21021 December 2023 12-21-23 Letter to the Honorable Byron Donalds from Chair Hanson Responds to Letter Regarding 2.206 Petition to Close Diablo Canyon Nuclear Power Plant, Unit 1 ML23341A0042023-12-19019 December 2023 LRA Acceptance Letter ML23352A2342023-12-18018 December 2023 Notification of Age-Related Degradation Inspection (05000275/2024014 and 05000323/2024014) and Request for Information DCL-23-122, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-12-14014 December 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation DCL-23-128, Emergency Plan Update2023-12-13013 December 2023 Emergency Plan Update ML23355A0952023-12-0808 December 2023 License Renewal Application Online Reference Portal DCL-23-125, Core Operating Limits Report for Unit 1 Cycle 252023-12-0606 December 2023 Core Operating Limits Report for Unit 1 Cycle 25 ML23291A2702023-11-28028 November 2023 Letter to Nakia Zavalla, Shpo, the Santa Ynez Band of Chumash Indians; Re., Diablo Canyon ISFSI Initiating Section 106 Consultation ML23320A2442023-11-28028 November 2023 Letter to Kerri Vera, Director of Department of Environmental Protection, Tule River Tribe; Re., Diablo Canyon ISFSI Initiating Section 106 Consultation ML23325A1382023-11-27027 November 2023 ISFSI Tribal Letter to San Luis Obispo County Chumash Indians ML23325A1322023-11-27027 November 2023 ISFSI Tribal Letter to Salian Tribe of Montgomery, San Luis Obispo ML23325A1332023-11-27027 November 2023 ISFSI Tribal Letter to Yak Tityu Tityu Northern Chumash Indians ML23307A0062023-11-27027 November 2023 ISFSI Tribal Letter to Northern Chumash Tribal Council ML24003A7242023-11-27027 November 2023 Independent Safety Committee; Diab Lo Canyon Nuclear Power Plant Operations, Thirty-Third Annual Report on the Safety ML23325A1292023-11-27027 November 2023 ISFSI Tribal Letter to Coastal Band of Chumash ML23320A1502023-11-17017 November 2023 Individual Notice of Consideration of Issuance of Amendment to Facility Operating License, Proposed No Significant Hazards Consideration Determination, & Opportunity for Hearing (Exigent Circumstances) (EPID L-2023-LLA-0155) - LTR DCL-23-121, Supplement to License Amendment Request 23-03, Revision to Technical Specification3.7.8, Auxiliary Saltwater System2023-11-16016 November 2023 Supplement to License Amendment Request 23-03, Revision to Technical Specification3.7.8, Auxiliary Saltwater System ML23296A0982023-11-15015 November 2023 Notification and Request for Consultation Regarding Pacific Gas and Electric Diablo Canyon Independent Spent Fuel Storage Installation Material License Renewal Request (Docket Number: 72-26) DCL-23-120, License Amendment Request 23-03 Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System2023-11-14014 November 2023 License Amendment Request 23-03 Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System ML23293A1052023-11-14014 November 2023 Receipt and Availability of License Renewal Application IR 05000275/20230032023-11-13013 November 2023 Integrated Inspection Report 05000275/2023003 and 05000323/2023003 ML23311A2082023-11-0909 November 2023 Reassignment of U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch IV DCL-23-118, License Renewal Application2023-11-0707 November 2023 License Renewal Application ML23318A2102023-10-31031 October 2023 Independent Safety Committee; Thirty-Third Annual Report on the Safety of Diablo Canyon Nuclear Power Plant Operations DCL-2023-520, Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP)2023-10-19019 October 2023 Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP) DCL-23-103, Independent Spent Fuel Storage Installation - Withdrawal of License Amendment Request 22-01, Request for Approval of Alternative Security Measures for Early Warning System2023-10-13013 October 2023 Independent Spent Fuel Storage Installation - Withdrawal of License Amendment Request 22-01, Request for Approval of Alternative Security Measures for Early Warning System IR 05000275/20240152023-10-10010 October 2023 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection (050002752024015 and 050003232024015) 2024-02-09
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 December 1, 2016 Mr. Edward D. Halpin Senior Vice President, Generation and Chief Nuclear Officer Pacific Gas and Electric Company P.O. Box 56 Mail Code 104/6 Avila Beach, CA 93424
SUBJECT:
NUCLEAR REGULATORY COMMISSION REPORT FOR THE AUDIT OF PACIFIC GAS AND ELECTRIC COMPANYS FLOOD HAZARD REEVALUATION REPORT SUBMITTAL RELATING TO THE NEAR-TERM TASK FORCE RECOMMENDATION 2.1-FLOODING FOR DIABLO CANYON POWER PLANT, UNIT NOS. 1 AND 2 (CAC NOS. MF6039 AND MF6040)
Dear Mr. Halpin:
By letter dated June 10, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15148A207), the U.S. Nuclear Regulatory Commission (NRC) informed you of the staffs plan to conduct a regulatory audit of Pacific Gas and Electric Companys (the licensees) Flood Hazard Reevaluation Report (FHRR) submittal related to the Near-Term Task Force Recommendation 2.1-Flooding for Diablo Canyon Power Plant, Unit Nos.1 and 2. The audit was intended to support the NRC staff review of the licensees FHRR and the subsequent issuance of a staff assessment.
The audit was conducted on March 17, 2016, and was performed consistent with NRC Office of Nuclear Reactor Regulation, Office Instruction LIC-111, Regulatory Audits, dated December 29, 2008 (ADAMS Accession No. ML082900195). The purpose of this letter is to provide you with the final audit report which summarizes and documents the NRCs regulatory audit of the licensees FHRR submittal.
E. Haplin If you have any questions, please contact me at (301) 415-2621 or by e-mail at Robert.Bernardo@nrc.gov.
Sincerely,
/RA/
Robert Bernardo, Project Manager Office of Nuclear Reactor Regulation Japan Lessons-Learned Division Hazards Management Branch Docket Nos. 50-275 and 50-323
Enclosure:
Audit Report cc w/encl: Distribution via Listserv
E. Haplin If you have any questions, please contact me at (301) 415-2621 or by e-mail at Robert.Bernardo@nrc.gov.
Sincerely,
/RA/
Robert Bernardo, Project Manager Office of Nuclear Reactor Regulation Japan Lessons-Learned Division Hazards Management Branch Docket Nos. 50-275 and 50-323
Enclosure:
Audit Report cc w/encl: Distribution via Listserv DISTRIBUTION:
PUBLIC JLD R/F RidsNRRJLD Resource RBernardo, NRR LQuinn-Willingham, NRO RidsNroDsea Resource RidsNrrDorlLpl4-1 Resource RidsNrrDorl Resource RidsNrrPMDiabloCanyonResource RidsRgn4MailCenter Resource RidsNrrLASLent CCook, NRO MBwensi, NRO SHelton, NRO MLee, NRO BHarvey, NRO MShams, NRR GBowman, NRR ADAMS Accession No.: ML16176A058 *via email OFFICE NRR/JLD/JHMB/PM NRR/JLD/JHMB/LA NRO/DSEA/RHM2/TM* NRO/DSEA/RHM2 NAME VHall SLent RRivera-Lugo MLee*
DATE 6/23/2016 6/24/2016 9/2/2016 11/28/2016 OFFICE NRO/DSEA/RHM1/BC NRR/JLD/JHMB/BC NRR/JLD/JHMB/PM NAME CCook* GBowman RBernardo DATE 11/28/2016 6/27/2016 12/1/2016 OFFICAL RECORD COPY
NUCLEAR REGULATORY COMMISSION AUDIT REPORT PACIFIC GAS AND ELECTRIC COMPANYS FLOOD HAZARD REEVALUATION REPORT SUBMITTALS RELATING TO THE NEAR-TERM TASK FORCE RECOMMENDATION 2.1-FLOODING FOR DIABLO CANYON POWER PLANT, UNIT NOS. 1 AND 2 BACKGROUND AND AUDIT BASIS By letter dated March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information to all power reactor licensees and holders of construction permits in active or deferred status, pursuant to Title 10 of the Code of Federal Regulations (10 CFR),
Section 0.54(f) Conditions of license (hereafter referred to as the 50.54(f) letter). The request was issued in connection with implementing lessons-learned from the 2011 accident at the Fukushima Dai-ichi nuclear power plant, as documented in the Near-Term Task Forces review of insights from the Fukushima Dai-ichi accident. Recommendation 2.1 in that document recommended that the NRC staff issue orders to all licensees to reevaluate seismic and flooding for their sites against current NRC requirements and guidance. Subsequent staff requirements memoranda associated with SECY-11-0124 and SECY-11-0137, instructed the NRC staff to issue requests for information to licensees pursuant to 10 CFR 50.54(f).
By letter dated March 11, 2015, Pacific Gas and Electric Companys (PG&E, the licensee) submitted its Flood Hazard Reevaluation Report (FHRR) Diablo Canyon Power Plant, Unit Nos. 1 and 2 (Diablo Canyon) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15071A045). The NRC is in the process of reviewing the aforementioned submittal and has completed a regulatory audit of the licensee to better understand the development of the submittal, identify any similarities/differences with past work completed and ultimately aid in its review of the licensees FHRR. This audit summary is being completed in accordance with the guidance set forth in NRC Office of Nuclear Reactor Regulation, Office Instruction LIC-111, Regulatory Audits, dated December 29, 2008 (ADAMS Accession No. ML082900195).
AUDIT LOCATION AND DATES The audit was completed by document review via a webinar session in conjunction with the use of the licensees established electronic reading room and teleconference on March 17, 2016.
Enclosure
AUDIT TEAM The NRC audit team, and audit participants were as follows:
NRC AUDIT TEAM Organization Victor Hall, Team Leader NRR Kevin Quinlan, Technical Lead NRO Chris Cook NRO Hosung Ahn NRO Mike Lee NRO Aida Rivera-Varona NRO Michael Willingham NRO John Quinn, et. al. Argonne National Laboratories AUDIT PARTICIPANTS Organization Helene Finger PG&E Terence Grebel PG&E Hossein Hamzehee PG&E Mike McCoy PG&E Michelle Olsofsky PG&E Philippe Soenen PG&E DOCUMENTS AUDITED The documents reviewed by the NRC staff were located in an electronic reading room during the NRC staffs review. Documents used by the NRC staff to support the technical analysis will be referenced in the staff assessment.
AUDIT ACTIVITIES In response to the 50.54(f) request, the licensee submitted its FHRR for the Diablo Canyon site on March 11, 2015. Through the course of the staffs FHRR review, the staff identified a series of questions (information need requests) for the licensee. The staffs information need requests were discussed during the audit and are briefly summarized below.
LIP-Related Questions: In connection with the local intense precipitation (LIP) flood hazard analysis, the licensee notified the staff that it had identified one or more inconsistencies in the original 50.54(f) FHRR related to LIP and indicated its plans to resubmit the LIP analysis to the NRC staff. By letter dated February 8, 2016 (ADAMS Accession Nos. ML16039A366 and ML16039A367), the revised LIP analysis was provided to the staff, and included the submission of the applicable FLO-2D-related input/output files. The licensees re-submittal addressed the staffs LIP-related questions. A more detailed discussion of the staffs review and conclusion of the revised LIP analysis will be included in the staff assessment.
Current Design-Basis vs. Current Licensing Basis (CLB): In response to this particular information need request, the staff were advised by the licensee that the intent was to describe water surface elevations as CDB.
In light of this information, the NRC staff determined that no further action in this area was necessary.
Flood Event Duration Parameters: The licensees 50.54(f) response was expected to include flood event duration parameters (FEDs) needed to perform the additional assessment of plant response for flood hazards not bounded by the CDB. The licensee confirmed that they did not provide complete FED parameter values for LIP. The licensee is expected to develop FED parameter values and applicable flood-related associated effects, if needed, in order to conduct future additional assessments of plant response per Appendix G of Nuclear Energy Institute (NEI) guidance document NEI 12-06, Revision 2, Diverse and Flexible Coping Strategies (Flex)
Implementation Guide (ADAMS Accession No. ML16005A625), as discussed in COMSECY-15-0019, Closure Plan for the Reevaluation of Flooding Hazards for Operating Nuclear Power Plants (ADAMS Accession No. ML15153A104).
In light of these facts, the staff determined that no further action on this matter was necessary.
EXIT MEETING/BRIEFING By letter dated March 30, 2016, the NRC staff issued a summary of the reevaluated flood-causing mechanisms (ADAMS Accession No. ML16083A551). That letter concluded that the licensee's reevaluated flooding hazard information is a suitable input for assessments associated with Near-Term Task Force Recommendation 2.1 "Flooding," thus closing out the discussion of the technical topics described above.