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Category:Inspection Report
MONTHYEARIR 05000275/20230042024-02-0909 February 2024 Integrated Inspection Report 05000275/2023004 and 05000323/2023004 IR 05000275/20230112024-01-12012 January 2024 NRC License Renewal Phase 1 Inspection Report 05000275/2023011 IR 05000275/20230032023-11-13013 November 2023 Integrated Inspection Report 05000275/2023003 and 05000323/2023003 IR 05000275/20240152023-10-10010 October 2023 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection (050002752024015 and 050003232024015) IR 05000275/20243012023-08-24024 August 2023 Notification of NRC Initial Operator Licensing Examination 05000275/2024301; 05000323/2024301 IR 05000275/20230052023-08-22022 August 2023 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2023005 and 05000323/2023005) - Mid Cycle Letter IR 05000275/20230022023-08-14014 August 2023 Quarterly Integrated Inspection Report 05000275/2023002 and 05000323/2023002- August 7, 2023 IR 05000275/20213012023-08-0909 August 2023 Errata for Diablo Canyon Power Plant, Units 1 and 2 - NRC Examination Report 050002752021301 and 050003232021301 IR 05000275/20234022023-08-0303 August 2023 NRC Security Inspection Report 05000275/2023402, and 05000323/2023402 IR 05000275/20233012023-07-25025 July 2023 NRC Initial Operator Licensing Examination Approval 05000275/2023301, 05000323/2023301 IR 05000275/20230102023-05-11011 May 2023 NRC Inspection Report 05000275 2023010 and 05000323 2023010 IR 05000275/20230012023-05-0909 May 2023 Integrated Inspection Report 05000275/2023001 and 05000323/2023001 IR 05000275/20234032023-03-10010 March 2023 NRC Security Baseline Inspection Report 05000275/2023403, 05000323/2023403 (Full Report) IR 05000275/20220062023-03-0101 March 2023 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2022006 and 05000323/2022006) IR 05000275/20220042023-02-0202 February 2023 Integrated Inspection Report 05000275/2022004 and 05000323/2022004 IR 05000275/20220102023-01-27027 January 2023 Biennial Problem Identification and Resolution Inspection Report 05000275/2022010 and 05000323/2022010 IR 05000275/20224022022-10-26026 October 2022 Security Baseline Inspection Report 05000275/2022402 and 05000323/ 2022402 IR 05000275/20220032022-10-24024 October 2022 Integrated Inspection Report 05000275/2022003 and 05000323/2022003 and Exercise of Enforcement Discretion IR 05000275/20220052022-08-23023 August 2022 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2022005 and 05000323/2022005) IR 05000275/20220022022-08-10010 August 2022 Integrated Inspection Report 05000275/2022002 and 05000323/2022002 IR 05000275/20220112022-08-0909 August 2022 Design Basis Assurance Inspection (Teams) Inspection Report 05000275/2022011 and 05000323/2022011 IR 05000275/20224012022-08-0303 August 2022 NRC Security Inspection Report 05000275/2022401, 05000323/2022401 ML22143A8812022-05-26026 May 2022 Revised Integrated Inspection Report 05000275/2022001 and 05000323/2022001 IR 05000275/20220012022-05-0505 May 2022 Integrated Inspection Report 05000275/2022001 and 05000323/2022001 ML22118A9362022-05-0505 May 2022 Integrated Inspection Report 05000275/2022001 and 05000323/2022001 IR 05000323/20214202022-03-31031 March 2022 Security Inspection Report 05000275 and 05000323/2021420 IR 05000275/20210062022-03-0202 March 2022 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2021006 and 05000323/2021006) IR 05000275/20210042022-02-0303 February 2022 Integrated Inspection Report 05000275/2021004 and 05000323/2021004 IR 05000275/20214042022-01-13013 January 2022 Public - Security Baseline Inspection Report 05000275/2021404 and 05000323/2021404 IR 05000275/20210032021-11-0303 November 2021 Integrated Inspection Report 05000275/2021003 and 05000323/2021003 IR 05000275/20210112021-09-10010 September 2021 Design Basis Assurance Inspection (Programs) Report 05000275/2021011 and 05000323/2021011 IR 05000275/20214052021-08-0505 August 2021 Security Baseline Inspection Report 05000275/2021405 and 05000323/2021405 IR 07200026/20214012021-08-0303 August 2021 Diablo Canon Nuclear Power Plant, Security Baseline Inspection Report 07200026/2021401 IR 05000275/20210022021-08-0202 August 2021 Integrated Inspection Report 05000275/2021002 and 05000323/2021002 IR 05000275/20210122021-07-28028 July 2021 Temporary Instruction 2515/194 Report 05000275/2021012 and 05000323/2021012 IR 05000275/20214012021-07-0101 July 2021 Security Baseline Inspection Report 05000275/2021401 and 05000323/2021401 IR 05000275/20210012021-05-0707 May 2021 DC IR 2021-001-drk, Diablo Canyon Power Plant Units 1 & 2 - Integrated Inspection Report 05000275/2021001, 05000323/2021001, & Independent Spent Fuel Storage Installation Inspection Report 07200026/2021001 DCL-21-036, One Hundred Eighty Day Steam Generator Report for Diablo Canyon Power Plant Unit 1 Twenty-Second Refueling Outage2021-04-22022 April 2021 One Hundred Eighty Day Steam Generator Report for Diablo Canyon Power Plant Unit 1 Twenty-Second Refueling Outage ML21102A0702021-04-12012 April 2021 Notification of NRC Design Bases Assurance Inspection (Programs) (05000275/2021011 and 05000323/2021011) and Initial Request for Information IR 05000275/20214032021-03-31031 March 2021 Cyber Security Inspection Report 05000275/2021403 and 05000323/2021403 IR 05000275/20210102021-03-11011 March 2021 Triennial Fire Protection Inspection Report 05000275/2021010 and 05000323/2021010 IR 05000275/20200062021-03-0303 March 2021 DC 2020 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 & 2 (Report 05000275/2020006 & 05000323/2020006) IR 05000275/20200042021-01-26026 January 2021 Integrated Inspection Report 05000275/2020004 and 05000323/2020004 IR 05000275/20204112020-12-22022 December 2020 Security Baseline Inspection Report 05000275/2020411 and 05000323/2020411 IR 05000275/20204102020-12-15015 December 2020 NRC Security Inspection Report 05000275/2020410 and 05000323/2020410 IR 05000275/20200102020-10-30030 October 2020 Biennial Problem Identification and Resolution Inspection Report 05000275/2020010 and 05000323/2020010 IR 05000275/20200032020-10-29029 October 2020 Integrated Inspection Report 05000275/2020003 and 05000323/2020003 IR 05000275/20200052020-09-0101 September 2020 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2020005 and 05000323/2020005) IR 05000275/20200022020-07-22022 July 2020 Integrated Inspection Report 05000275/2020002 and 05000323/2020002 IR 05000275/20200012020-04-16016 April 2020 Integrated Inspection Report 05000275/2020001 and 05000323/2020001 2024-02-09
[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 ML24003A8902024-01-24024 January 2024 Letter to P. Gerfen - Diablo Canyon Notice of Intent to Conduct Scoping and Prepare an Environmental Impact Statement ML24012A0062024-01-24024 January 2024 Achp Scoping Letter for Diablo Canyon License Renewal ML24012A0362024-01-24024 January 2024 Request to Initiate Section 106 Consultation and Scoping Process for the Environmental Review License Renewal Application 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 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 ML24017A2492024-01-24024 January 2024 Letter to Neil Peyron, Chairman, Tule River Tribe, Re. Diablo Canyon 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 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 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 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 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 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 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 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 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 ML23325A1382023-11-27027 November 2023 ISFSI Tribal Letter to San Luis Obispo County Chumash Indians 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) ML23293A1052023-11-14014 November 2023 Receipt and Availability of License Renewal Application 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 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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Inspection Report - - 2006005 |
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Text
April 3, 2007 John Senior Vice President - Generation and Chief Nuclear Officer Pacific Gas and Electric Company P.O. Box 770000 Mail Code B32 San Francisco, CA 94177-0001
Dear Mr. Keenan:
SUBJECT: ERRATA FOR DIABLO CANYON POWER PLANT - NRC INSPECTION REPORT 05000275/2006005; 05000323/2006005 AND 07200026/2006002 Please insert the enclosed corrected pages of NRC Inspection Report 05000275/2006005; 05000323/2006005, and 0700026/2006002. The subject inspection report included inspection related activities associated with the Diablo Canyon Independent Spent Fuel Storage Installation (ISFSI) project. NRC Inspection Report 07200026/2006002, used for inspection of the ISFSI, was not included with the originally issued inspection report.
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA/
Vince G. Gaddy, Chief Project Branch B Division of Reactor Projects Dockets: 50-275 50-323 72-026 Licenses: DPR-80 DPR-82 SNM-2511
Enclosure:
As stated
Pacific Gas and Electric Company -2-
REGION IV==
Dockets: 50-275, 50-323,72-026 Licenses: DPR-80, DPR-82, SNM-2511 Report: 05000275/2006005 05000323/2006005 07200026/2006002 Licensee: Pacific Gas and Electric Company Facility: Diablo Canyon Power Plant, Units 1 and 2 Location: 7 1/2 miles NW of Avila Beach Avila Beach, California Dates: October 1 through December 31, 2006 Inspectors: T. Jackson, Senior Resident Inspector T. McConnell, Resident Inspector M. Brown, Resident Inspector M. Peck, Senior Resident Inspector - Callaway Plant J. Dodson, Regional Operations Officer J. Drake, Operation Engineer P. Goldberg, Reactor Inspector R. Kellar, Health Physicist R. Lantz, Senior Emergency Preparedness Inspector Approved By: V. G. Gaddy, Chief, Projects Branch B Division of Reactor Projects-1- Enclosure
SUMMARY OF FINDINGS IR 05000275/2006005, 05000323/2006005; 07200026/2006002; 10/1/06 - 12/31/06; Diablo Canyon Power Plant Units 1 and 2; Maintenance Risk Assessments and Emergent Work Control, Problem Identification and Resolution, Operability Evaluations, and Other Activities.
This report covered a 13-week period of inspection by resident inspectors and Region-based health physics and reactor inspectors. Three NRC-identified violations and one self-revealing, Green, noncited violation were identified. The significance of most findings is indicated by their color (Green, White, Yellow, or Red) using Inspection Manual Chapter 0609 Significance Determination Process. Findings for which the Significance Determination Process does not apply may be Green or be assigned a severity level after NRC management review. The NRCs program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, Reactor Oversight Process, Revision 3, dated July 2000.
A. NRC-Identified and Self-Revealing Findings Cornerstone: Initiating Events
- Green. A self-revealing, noncited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, was identified for the failure to apply adequate design control measures regarding the installation of thimble tubes with chrome-plated bands. Specifically, Pacific Gas and Electric Company installed thimble tubes with chrome-plated bands at the fuel assembly bottom nozzle/lower core plate interface to address flow-induced vibration wear. Due to the failure of engineering personnel to account for the chrome-plated bands in the thimble tube relocation procedure, the chrome-plated band on Thimble Tube L-13 was removed from its designed location at the fuel assembly bottom nozzle, thereby increasing the potential for thimble tube through-wall wear. This issue was entered into Pacific Gas and Electric Companys corrective action program as Nonconformance Report N0002211.
The finding is greater than minor because it is associated with the Initiating Events Cornerstone attribute of design control and affects the associated cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions during shutdown as well as power operations.
Using the Inspection Manual Chapter 0609, Significance Determination Process, Phase 1 Worksheet, the finding is determined to have very low safety significance because, assuming the worst-case degradation, the finding would not result in exceeding the Technical Specification limit for identified reactor coolant system leakage or affect mitigating systems. Specifically, the inspectors verified the worst-case leakage, i.e., guillotine break, from a thimble tube at the fuel assembly bottom nozzle/lower core plate interface to be approximately 7 gpm versus the Technical Specification reactor coolant system identified leakage limit of 10 gpm.
The finding has a crosscutting aspect in the area of problem identification and resolution associated with the corrective action program because Pacific Gas and Electric Company removed a corrective action to prevent recurrence of significant thimble tube wear (Section 4OA5.5).
-3- Enclosure