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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 ML22118A9362022-05-0505 May 2022 Integrated Inspection Report 05000275/2022001 and 05000323/2022001 IR 05000275/20220012022-05-0505 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 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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Text
UNITE D S TATES NUC LEAR RE GULATOR Y C OMMIS SI ON uly 20, 2009
SUBJECT:
DIABLO CANYON POWER PLANT - NRC INSPECTION REPORT 05000275/2009006
Dear Mr. Conway:
On June 30, 2009, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at your Diablo Canyon Power Plant, Unit 1. The enclosed report documents the inspection findings that were discussed on June 29, 2009, with Mr. Jim Becker and members of your staff.
This inspection examined activities conducted under your Unit 1 license as they relate to safety and compliance with the Commission's rules and regulations, and with the conditions of your Unit 1 license. Within these areas, the inspection consisted of selected examination of procedures and representative records, observations of activities, and interviews with personnel. This inspection covers Unit 1 steam generator replacement activities.
Based on the results of this inspection, no findings of significance were identified.
In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of the NRCs document system, ADAMS.
ADAMS is accessible from the NRC Website 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 Docket: 50-275 License: DPR-80
Pacific Gas and Electric Company -2-
Enclosure:
NRC Inspection Report 05000275/2009006 w/Attachment: Supplemental Information
REGION IV==
Dockets: 50-275 Licenses: DPR-80 Report: 05000275/2009006 Licensee: Pacific Gas and Electric Company Facility: Diablo Canyon Power Plant, Unit 1 Location: 7 1/2 miles NW of Avila Beach Avila Beach, California Dates: January 1, 2009 through June 30, 2009 Inspector: M. Brown, Resident Inspector, Project Branch B, DRP Approved By: V.G. Gaddy, Chief, Project Branch B, Division of Reactor Projects-1- Enclosure
SUMMARY OF FINDINGS
IR 05000275/2009006; 1/1/09 - 6/30/09; Diablo Canyon Power Plant; Steam Generator
Replacement Inspection (50001)
This report covered a 6-month period of inspection by the resident inspector. No findings of significance were identified. The NRCs program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, "Reactor Oversight Process," Revision 4, dated December 2006.
NRC-Identified and Self-Revealing Findings
None.
Licensee-Identified Violations
None.
REPORT DETAILS
4OA5 Other Activities
a. Inspection Scope
This inspection report discusses NRC inspection activities related to the Diablo Canyon Power Plant, Unit 1, steam generator replacement project.
These steam generator replacement inspection activities are not part of the normal baseline inspection program, but are performed on an as-needed basis. Therefore, no sample size is specified. The inspector completed the entire procedure for steam generator replacement (50001).
Inspection Activities Documented in Other Inspection Reports:
A significant portion of these inspection efforts were completed and documented in prior NRC inspection reports, as listed below:
In addition to the above, as part of this inspection effort, the inspector reviewed additional activities to ensure proper
- (1) design and planning and
- (2) removal and replacement, as provided below:
Engineering and Technical Support and Permanent Design Modifications.
The inspector reviewed engineering and technical support activities prior to, and during, the replacement outage. The inspector reviewed the following modifications:
- The complete scope of design changes associated with all the hard (physical plant) and soft (documentation) changes for the replacement of all four Unit 1 steam generators
- Unit 1 and Unit 2 Tavg and T-feedwater range program
- Use of alternate methodologies for Units 1 and 2 steam generator replacement projects The inspector verified the technical adequacy of the modifications, including 10 CFR 50.59 related documents.
Lifting and Rigging. The inspector reviewed engineering design, modification, testing, and analysis associated with steam generator lifting and rigging. This included:
- (1) crane and rigging equipment;
- (2) steam generator component drop analysis;
- (3) safe load paths;
- (4) load lay-down areas; and
- (5) heavy load haul path. The inspector verified that the licensee had properly evaluated the potential impact of load handling on the reactor core and spent fuel, including cooling and support systems. This review also included the potential impact to underground electrical lines, fluid piping, and sewer systems that were traversed by the heavy haul route.
The inspector conducted reviews of the preparations and procedures for:
- (1) crane and rigging inspections;
- (2) testing;
- (3) equipment modifications;
- (4) lay-down area preparations; and
- (5) training. The related activities and equipment included:
- Area preparation for the outside systems
- Self-propelled modular transporter travel through fuel handling building
- Upending/downending device
- Temporary lifting device inside containment
- (1) inside containment temporary lifting device lifting and rigging,
- (2) downending,
- (3) traversing through the hatch transfer system,
- (4) single point lift system movements,
- (5) self-propelled modular transporter travel from the sundeck through the fuel handling building to the outside lift system
- (6) lifting the outside lift system, and
- (7) self-propelled modular transporter travel from the outside lift system to the old steam generator storage facility. The inspector also directly observed portions of the installation of the replacement steam generators, which were moved from the replacement steam generator storage facility into containment in reverse order to the old steam generator movements discussed above. The inspector observed a sample of various other activities including the initial lifts, heavy haul routes, and use of the hatch transfer system equipment.
Radiation Protection Program Controls. In addition to the health physics inspections, which are referenced in Section 1.a of this report, the inspector performed the following radiation protection-related inspections:
- (1) direct inspection of radiation protection personnel coverage and control, as low as reasonably achievable, and dosimetry control activities along load movement path of old steam generator from containment to the old steam generator storage facility; and
- (2) direct inspection of radiation protection controls and procedure adherence to the old steam generator storage facility.
Steam Generator Hold Down Bolts and Major Structural Modifications. The inspector examined the old steam generator hold down bolts for degradation. The inspector also reviewed documentation and performed direct inspections related to permanent structural modifications made to facilitate steam generator replacement. It should be noted that even though these modifications were treated as permanent, all outside rigging and handling equipment was removed after the replacement of the Unit 1 steam generators. These modifications included the outside lift system platform and the outside lift system tower base frame.
Foreign Material Controls. The inspector directly observed the cutting and grinding of primary and secondary side main steam line piping as well as the foreign material exclusion boundaries and controls in place for the remaining reactor coolant system piping. The inspector also verified foreign material control measures for the reactor coolant system hot and cold legs after old steam generator removal. The inspector also performed engineering reviews of the foreign material controls and reviewed corrective action documents related to foreign material exclusion.
Containment Access and Integrity. Final containment close-out and testing inspections were performed by the resident inspectors and documented in NRC Integrated Inspection Report 05000275/2009002 and 05000323/2009002. It should be noted that no physical modification or cutting was performed on the containment hatch opening during the Unit 1 steam generator replacement outage.
b. Findings
.
No findings of significance were identified.
4OA6 Meetings, Including Exit
The inspector presented the inspection results to Mr. J. Becker, Site Vice President, and other members of the licensee's management staff in person on June 29, 2009. The licensee acknowledged the information presented. Some proprietary information was reviewed during this inspection but no proprietary information was included in this report.
ATTACHMENT: Supplemental Information
SUPPLEMENTAL INFORMATION
KEY POINTS OF CONTACT
Licensee Personnel
- J. Becker, Site Vice President
- W. Guldemond, Director, Site Services
- S. Ketelsen, Manager, Regulatory Services
- K. Peters, Station Director
- M. Somerville, Manager, Radiation Protection
- T. Swartzbaush, Manager, Operations
- J. Welsch, Director, Operations Services
LIST OF DOCUMENTS REVIEWED