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Category:Letter
MONTHYEARML24311A1232024-11-14014 November 2024 – Report for the Aging Management Audit Regarding the License Renewal Application Review IR 05000275/20240102024-11-0707 November 2024 Biennial Problem Identification and Resolution Inspection Report 05000275/2024010 and 05000323/2024010 IR 05000275/20244022024-11-0707 November 2024 Security Baseline Inspection Report 05000275/2024402 and 05000323/2024402 IR 07200026/20244012024-11-0606 November 2024 Independent Spent Fuel Storage Installation Security Inspection Report 07200026/2024401 DCL-24-095, CFR 50.46 Annual Report of Emergency Core Cooling System Evaluation Model Changes for Peak Cladding Temperature for 20232024-11-0606 November 2024 CFR 50.46 Annual Report of Emergency Core Cooling System Evaluation Model Changes for Peak Cladding Temperature for 2023 ML24302A1912024-11-0101 November 2024 Ltr to C. Mcdarment Tule River Tribe Re DCPP Dseis ML24302A1942024-11-0101 November 2024 Ltr to K. Kahn Santa Ynez Band of Chumash Indians Re DCPP Dseis ML24302A2612024-11-0101 November 2024 Letter to Achp Re DCPP Dseis ML24302A1972024-11-0101 November 2024 Letter to V. Sage Walker Northern Chumash Tribal Council Re DCPP Dseis ML24302A1962024-11-0101 November 2024 Ltr to SLO County Chumash Indians Re DCPP Dseis ML24302A1932024-11-0101 November 2024 Letter to G. Pierce Salinan Tribe of Monterey, SLO Re DCPP Dseis ML24302A2622024-11-0101 November 2024 Letter to CA SHPO Regarding DCPP Dseis ML24302A1922024-11-0101 November 2024 Ltr to G. Frausto Coastal Band of Chumash Indians Re DCPP Dseis ML24302A1952024-11-0101 November 2024 Ltr to M. Olivas Tucker Ytt Re DCPP Dseis ML24276A1482024-10-30030 October 2024 NRC to Fws Request for Concurrence with Endangered Species Act Determinations for Diablo Canyon Power Plant, Units 1, 2, ISFSI Proposed License Renewals in San Luis Obispo Co, CA IR 05000275/20240032024-10-30030 October 2024 Integrated Inspection Report 05000275/2024003 and 05000323/2024003 and Independent Spent Fuel Storage Installation Report 07200026/2024001 ML24275A0622024-10-30030 October 2024 NRC to NMFS Request Initiate Formal Endangered Species Act Consultation and Abbreviated Essential Fish Habitat for Proposed License Renewal of DCP Plant Units 1, 2 ML24269A0122024-10-29029 October 2024 OEDO-24-00083 2.206 Petition Diablo Canyon Seismic CDF - Response to Petitioner Letter ML24284A3112024-10-28028 October 2024 Ltr to a Peck, Diablo Canyon Nuclear Power Plant Units 1 and 2 Notice of Avail of Draft Supplement 62 to the GEIS for Lic Renew of Nuclear Plants ML24284A3122024-10-28028 October 2024 Ltr to P Ting, Diablo Canyon Nuclear Power Plant Units 1 and 2 Notice of Avail of Draft Supplement 62 to the GEIS for Lic Renew of Nuclear Plants IR 05000275/20240132024-10-28028 October 2024 – License Renewal Report 05000275/2024013 and 05000323/2024013 ML24261B9492024-10-24024 October 2024 Issuance of Amendment Nos. 246 and 248 Revision to Technical Specification 5.6.6, Reactor Coolant System (RCS) Pressure and Temperature Limits Report (PTLR) DCL-24-103, Pg&Es Voluntary Submittal of Information Related to 10 CFR 2.206 Petition Regarding Seismic Core Damage Frequency for DCPP, Units 1 and 22024-10-24024 October 2024 Pg&Es Voluntary Submittal of Information Related to 10 CFR 2.206 Petition Regarding Seismic Core Damage Frequency for DCPP, Units 1 and 2 IR 05000275/20244042024-10-23023 October 2024 Security Baseline Inspection Report 05000275/2024404 and 05000323/2024404 ML24277A0292024-10-18018 October 2024 NRC to Fws Req. for Concurrence W. Endangered Species Act Determinations for Diablo Canyon Power Plant Units 1,2, ISFSI Proposed License Renewals in San Luis Obispo Co., CA DCL-24-092, Supplement and Annual Update License Renewal Application, Amendment 12024-10-14014 October 2024 Supplement and Annual Update License Renewal Application, Amendment 1 DCL-24-098, Material Status Report for the Period Ending August 31, 20242024-10-0909 October 2024 Material Status Report for the Period Ending August 31, 2024 DCL-24-091, Response to Request for Additional Information by the Office of Nuclear Reactor Regulation2024-10-0303 October 2024 Response to Request for Additional Information by the Office of Nuclear Reactor Regulation IR 05000275/20253012024-10-0303 October 2024 Notification of NRC Initial Operator Licensing Examination 05000275/2025301; 05000323/2025301 ML24240A0222024-09-20020 September 2024 Letter to A. Peck Environmental Impact Statement Scoping Summary Report for Diablo Canyon Nuclear Power Plant Units 1 and 2 ML24260A1222024-09-14014 September 2024 14 Sept 2024 Ltr - California Coastal Commission to Pg&E, Incomplete Consistency Certification for Requested Nuclear Regulatory Commission License Renewal for Diablo Canyon Power Plant DCL-24-087, License Renewal - Historic and Cultural Resources Reference Documents (Redacted)2024-09-12012 September 2024 License Renewal - Historic and Cultural Resources Reference Documents (Redacted) ML24262A2462024-09-11011 September 2024 10 CFR 2.206 - Diablo Canyon Units 1 and 2 Seismic - Petitioner Response to Acknowledgement Letter - DCL-24-083, CFR Part 21 Notification: Commercially Dedicated Snubber Valve Not Properly Heat Treated2024-09-0909 September 2024 CFR Part 21 Notification: Commercially Dedicated Snubber Valve Not Properly Heat Treated DCL-24-078, Pre-Notice of Disbursement from Decommissioning Trust2024-09-0303 September 2024 Pre-Notice of Disbursement from Decommissioning Trust DCL-24-082, Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment2024-08-28028 August 2024 Decommissioning Draft Biological Assessment and Draft Essential Fish Habitat Assessment ML24205A0662024-08-27027 August 2024 OEDO-24-00083 - 10 CFR 2.206 - Ack Letter - Diablo Canyon Units 1 and 2 Seismic Core Damage Frequency - IR 05000275/20240052024-08-22022 August 2024 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2024005 and 05000323/2024005) DCL-24-077, Responses to NRC Requests for Additional Information on Diablo Canyon Power License Renewal Application Severe Accident2024-08-15015 August 2024 Responses to NRC Requests for Additional Information on Diablo Canyon Power License Renewal Application Severe Accident DCL-24-075, Response to Request for Additional Information for License Amendment Request 23-02, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power React2024-08-0808 August 2024 Response to Request for Additional Information for License Amendment Request 23-02, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power React IR 05000275/20240022024-08-0606 August 2024 Integrated Inspection Report 05000275/2024002 and 05000323/2024002 DCL-24-079, DC-2024-07 Post Exam Comments Analysis2024-08-0202 August 2024 DC-2024-07 Post Exam Comments Analysis IR 05000275/20240122024-07-31031 July 2024 License Renewal Report 05000275/2024012 and 05000323/2024012 DCL-24-070, License Amendment Request 24-03 Revision to Technical Specification 5.5.16 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies2024-07-31031 July 2024 License Amendment Request 24-03 Revision to Technical Specification 5.5.16 for Permanent Extension of Type a and Type C Leak Rate Test Frequencies DCL-24-071, Core Operating Limits Report for Unit 2 Cycle 252024-07-22022 July 2024 Core Operating Limits Report for Unit 2 Cycle 25 DCL-2024-523, Submittal of Report on Discharge Self-Monitoring2024-07-18018 July 2024 Submittal of Report on Discharge Self-Monitoring ML24187A1352024-07-16016 July 2024 Letter to Paula Gerfen - Diablo Canyon Units 1 and 2 - Summary of June 2024 Audit Related to the License Renewal Application Severe Accident Mitigation Alternatives Review IR 05000275/20240142024-07-11011 July 2024 Age-Related Degradation Inspection Report 05000275/2024014 and 05000323/2024014 IR 05000275/20244012024-07-0808 July 2024 Security Baseline Inspection Report 05000275/2024401 and 05000323/2024401 (Full Report) IR 05000323/20240112024-07-0303 July 2024 License Renewal Phase Report 05000323/2024011 2024-09-09
[Table view] Category:Report
MONTHYEARDCL-24-095, CFR 50.46 Annual Report of Emergency Core Cooling System Evaluation Model Changes for Peak Cladding Temperature for 20232024-11-0606 November 2024 CFR 50.46 Annual Report of Emergency Core Cooling System Evaluation Model Changes for Peak Cladding Temperature for 2023 ML24305A1872024-10-31031 October 2024 OEDO-24-00083 10 CFR 2.206 - Diablo Canyon Units 1 and 2 Seismic CDF - Petition Supplement 10-30-2024 DCL-24-103, Pg&Es Voluntary Submittal of Information Related to 10 CFR 2.206 Petition Regarding Seismic Core Damage Frequency for DCPP, Units 1 and 22024-10-24024 October 2024 Pg&Es Voluntary Submittal of Information Related to 10 CFR 2.206 Petition Regarding Seismic Core Damage Frequency for DCPP, Units 1 and 2 ML24129A1762024-06-14014 June 2024 National Historic Preservation Act Section 106 Consultation – Results of Identification and Evaluation (Docket Number: 72-026) DCL-24-051, One Hundred Eighty Day Steam Generator Report for Twenty-Fourth Refueling Outage2024-05-0808 May 2024 One Hundred Eighty Day Steam Generator Report for Twenty-Fourth Refueling Outage DCL-24-048, O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 20232024-04-30030 April 2024 O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 2023 OIG-24-A-01, Inspector General’S Assessment of the Most Serious Management and Performance Challenges Facing the U.S. Nuclear Regulatory Commission in Fiscal Year 20242023-11-0303 November 2023 OIG-24-A-01 Inspector General’S Assessment of the Most Serious Management and Performance Challenges Facing the U.S. Nuclear Regulatory Commission in Fiscal Year 2024 ML23130A0052023-06-27027 June 2023 Report to Congress Regarding Diablo Canyon ML22108A1662022-05-0303 May 2022 Enclosure 1 - Assessment Event Inquiry Into the Nuclear Regulatory Commission Oversight of the Auxiliary Feedwater System at Diablo Canyon Nuclear ML22108A2892022-05-0303 May 2022 Enclosure - Response to Representative Carbajal Regarding OIG Report on Diablo ML24289A0962022-03-31031 March 2022 Definition of a Probable Maximum Tsunami at the Diablo Canyon Nuclear Power Plant Site: a Historical Perspective L-22-003, Independent Spent Fuel Storage Installation - License Renewal Application for the Diablo Canyon Independent Spent Fuel Storage Installation2022-03-0909 March 2022 Independent Spent Fuel Storage Installation - License Renewal Application for the Diablo Canyon Independent Spent Fuel Storage Installation DCL-21-071, Federally Listed Species Affects Determination Memorandum2021-10-14014 October 2021 Federally Listed Species Affects Determination Memorandum ML21188A0362021-07-0707 July 2021 Draft PG&E Letter DCL-21-046 - Diablo Canyon Unit 1: Emergency License Amendment Request 21-05, Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System ML20353A3972020-12-18018 December 2020 NRC Response to Public Comment Regarding Spent Fuel Canister Drop from 2019 Regcon DCL-20-102, Nuclear Material Transaction Report for New Fuel2020-12-0909 December 2020 Nuclear Material Transaction Report for New Fuel ML20335A0132020-11-30030 November 2020 NRC Response to Public Watchdogs November 2 ML20328A3012020-11-23023 November 2020 NERC Reliability Standards for the Bulk Electric System of North America Updated July 20, 2020 (Cgnp Public Comments on Diablo Canyon Nuclear Power Plant, Units 1 and 2 - Pre-submittal Meeting of 11/24/2020) ML20239A9562020-08-26026 August 2020 Evaluation of the Potential Piping Degradation Safety Concern on the Auxiliary Feedwater System at Diablo Canyon Unit 1 DCL-19-054, Submittal of Acceptance Report Following the Installation of Structural Weld Overlay, REP-RHR-SWOL for Unit 12019-07-0101 July 2019 Submittal of Acceptance Report Following the Installation of Structural Weld Overlay, REP-RHR-SWOL for Unit 1 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 DCL-18-050, Evaluation Documents in Support of Structural Weld Overlay, REP-RHR-SWOL, Unit 22018-09-11011 September 2018 Evaluation Documents in Support of Structural Weld Overlay, REP-RHR-SWOL, Unit 2 IR 05000275/20180052018-08-31031 August 2018 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2018005 and 05000323/2018005) DCL-18-058, Flaw Evaluation of Unit 2, ASME Code Class 2 Charging Pump Discharge Lines: Welds WIC-45A and RB-46-72018-08-0808 August 2018 Flaw Evaluation of Unit 2, ASME Code Class 2 Charging Pump Discharge Lines: Welds WIC-45A and RB-46-7 DCL-18-027, Seismic Probabilistic Risk Assessment for the Diablo Canyon Power Plant, Units 1 & 2 - Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1: Seismic of the Near-Term Task Force Review of Insight2018-04-24024 April 2018 Seismic Probabilistic Risk Assessment for the Diablo Canyon Power Plant, Units 1 & 2 - Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1: Seismic of the Near-Term Task Force Review of Insights ML17024A2072017-12-18018 December 2017 Staff Assessment of Response to 10 CFR 50.54(F) Information Request Flood-Causing Mechanism Reevaluation ML17341A0652017-11-30030 November 2017 Technical Evaluation Report Diablo Canyon Nuclear Power Plant Tsunami Hazard Reevaluation Review ML17334A1052017-11-29029 November 2017 Reactor Coolant System Pressure and Temperature Limits Report ML17229B6172017-08-17017 August 2017 Flaw Evaluation of Residual Heat Removal Suction Weld Joint DCL-17-064, Plant Focused Evaluation Report for External Flooding2017-07-19019 July 2017 Plant Focused Evaluation Report for External Flooding DCL-17-049, Flaw Evaluation of Unit 2 Residual Heat Removal Suction Weld Joint2017-05-18018 May 2017 Flaw Evaluation of Unit 2 Residual Heat Removal Suction Weld Joint DCL-16-117, Reactor Coolant System Pressure and Temperature Limits Report, Revision 152016-11-10010 November 2016 Reactor Coolant System Pressure and Temperature Limits Report, Revision 15 ML16314B0822016-11-0909 November 2016 Criteria for Protection Against Dynamic Effects Associated with a Postulated Rupture of Piping ML16314C6912016-11-0909 November 2016 Enclosure, Statement of the Problem Concerning PWR Primary Coolant System Pipe Rupture DCL-16-124, Implementation of Alternative Source Term Summary of Dose Analyses and Results Revision 52016-11-0909 November 2016 Implementation of Alternative Source Term Summary of Dose Analyses and Results Revision 5 ML16287A7552016-10-0606 October 2016 Technical Assessment Implementation of Alternative Source Terms Summary of Dose Analyses and Results Revision 4 ML16215A1092016-08-0202 August 2016 OEDO-16-00436 - Supplemental Information from Mr. Lochbaum 10 CFR 2.206 Petition on Apparent Violation of 10 CFR 50.9 at Diablo Canyon Nuclear Power Plant ML16169A2652016-05-18018 May 2016 Technical Report, Implementation of Alternative Source Terms Summary of Dose Analysis and Results, Revision 3 ML16146A0952016-04-21021 April 2016 54006-CALC-01, Diablo Canyon Power Plant: Evaluation of Risk Significance of Permanent ILRT Extension. DCL-16-081, 15-0681-RTM-001, Revision 0, System Level Requirements Traceability Matrix (Rtm).2016-03-31031 March 2016 15-0681-RTM-001, Revision 0, System Level Requirements Traceability Matrix (Rtm). ML16238A1042016-03-31031 March 2016 15-0681-RTM-001, Revision 0, System Level Requirements Traceability Matrix (Rtm). ML16019A2242016-02-0101 February 2016 Record of Review, Dispositions to Diablo Canyon Nuclear Plant, Units 1 and 2, Internal Events, Internal Flooding, Seismic, and Fire PRA Facts and Observations DCL-16-020, Diablo Canyon, Units 1 and 2 - Revision 3 to 993754-11-861-NP, V&V Design Phase Summary Report Ppsi2016-01-15015 January 2016 Diablo Canyon, Units 1 and 2 - Revision 3 to 993754-11-861-NP, V&V Design Phase Summary Report Ppsi DCL-16-020, Diablo Canyon, Units 1 and 2 - 9Revision 1 to 93754-12-862-NP, V&V Implementation Phase Summary Report PPSII-IV2016-01-15015 January 2016 Diablo Canyon, Units 1 and 2 - 9Revision 1 to 93754-12-862-NP, V&V Implementation Phase Summary Report PPSII-IV ML16061A4682016-01-15015 January 2016 9Revision 1 to 93754-12-862-NP, V&V Implementation Phase Summary Report PPSII-IV ML16061A4642016-01-15015 January 2016 Revision 3 to 993754-11-861-NP, V&V Design Phase Summary Report Ppsi DCL-16-020, Diablo Canyon, Units 1 and 2 - Revision 3 to 993754-11-854-1-NP, Protection Set I, Factory Acceptance Test Report2016-01-14014 January 2016 Diablo Canyon, Units 1 and 2 - Revision 3 to 993754-11-854-1-NP, Protection Set I, Factory Acceptance Test Report ML16061A4592016-01-14014 January 2016 Revision 3 to 993754-11-854-1-NP, Protection Set I, Factory Acceptance Test Report ML16048A2152015-12-15015 December 2015 Fleet Vehicle-Asset List ML16048A2072015-12-15015 December 2015 Once Through Cooling 2024-06-14
[Table view] Category:Miscellaneous
MONTHYEARDCL-24-095, CFR 50.46 Annual Report of Emergency Core Cooling System Evaluation Model Changes for Peak Cladding Temperature for 20232024-11-0606 November 2024 CFR 50.46 Annual Report of Emergency Core Cooling System Evaluation Model Changes for Peak Cladding Temperature for 2023 ML24129A1762024-06-14014 June 2024 National Historic Preservation Act Section 106 Consultation – Results of Identification and Evaluation (Docket Number: 72-026) DCL-24-048, O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 20232024-04-30030 April 2024 O CFR 50.59 and 1 O CFR 72.48 Summary Report for the Period of January 1, 2022, Through December 31, 2023 ML23130A0052023-06-27027 June 2023 Report to Congress Regarding Diablo Canyon ML22108A2892022-05-0303 May 2022 Enclosure - Response to Representative Carbajal Regarding OIG Report on Diablo ML22108A1662022-05-0303 May 2022 Enclosure 1 - Assessment Event Inquiry Into the Nuclear Regulatory Commission Oversight of the Auxiliary Feedwater System at Diablo Canyon Nuclear DCL-21-071, Federally Listed Species Affects Determination Memorandum2021-10-14014 October 2021 Federally Listed Species Affects Determination Memorandum ML21188A0362021-07-0707 July 2021 Draft PG&E Letter DCL-21-046 - Diablo Canyon Unit 1: Emergency License Amendment Request 21-05, Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System DCL-20-102, Nuclear Material Transaction Report for New Fuel2020-12-0909 December 2020 Nuclear Material Transaction Report for New Fuel ML20335A0132020-11-30030 November 2020 NRC Response to Public Watchdogs November 2 ML20328A3012020-11-23023 November 2020 NERC Reliability Standards for the Bulk Electric System of North America Updated July 20, 2020 (Cgnp Public Comments on Diablo Canyon Nuclear Power Plant, Units 1 and 2 - Pre-submittal Meeting of 11/24/2020) 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 IR 05000275/20180052018-08-31031 August 2018 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2018005 and 05000323/2018005) ML17024A2072017-12-18018 December 2017 Staff Assessment of Response to 10 CFR 50.54(F) Information Request Flood-Causing Mechanism Reevaluation DCL-16-117, Reactor Coolant System Pressure and Temperature Limits Report, Revision 152016-11-10010 November 2016 Reactor Coolant System Pressure and Temperature Limits Report, Revision 15 ML16215A1092016-08-0202 August 2016 OEDO-16-00436 - Supplemental Information from Mr. Lochbaum 10 CFR 2.206 Petition on Apparent Violation of 10 CFR 50.9 at Diablo Canyon Nuclear Power Plant ML16019A2242016-02-0101 February 2016 Record of Review, Dispositions to Diablo Canyon Nuclear Plant, Units 1 and 2, Internal Events, Internal Flooding, Seismic, and Fire PRA Facts and Observations ML16048A2072015-12-15015 December 2015 Once Through Cooling ML16048A2152015-12-15015 December 2015 Fleet Vehicle-Asset List DCL-15-102, 10 CFR 71.95 Report Regarding Energy Solutions' Model 8-120B Shipping Cask2015-08-24024 August 2015 10 CFR 71.95 Report Regarding Energy Solutions' Model 8-120B Shipping Cask ML15231A5712015-07-28028 July 2015 Holtec Information Bulletin (HIB) No. 67 (Rev. 0), VCT Restraint Strap Weld Failure ML15160A2612015-07-0101 July 2015 Letter to NMFS Notice of Intent to Reinitiate Scoping Process for Diablo Canyon Power Plant Units 1 and 2 License Renewal Application ML16048A2042015-06-30030 June 2015 Notice of Intent, General Permit to Discharge Storm Water ML16048A2132015-06-22022 June 2015 Permit Renewal No. 49-1 ML15355A2972015-05-31031 May 2015 DCPP Fsaru R22 File a Drawings - Combined - (Redacted) ML15355A0792015-05-31031 May 2015 DCPP Fsaru R22 File B Drawings - Combined (Redacted) RIS 2014-07, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 2 of 52014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 2 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 3 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 5 ML14189A5432014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 5 ML14189A5372014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 5 ML14189A5332014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 3 of 5 ML14189A5312014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 2 of 5 ML14189A5002014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 1 of 5 RIS 2014-07, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 52014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 5 RIS 2014-07, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 52014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 5 RIS 2014-07, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 3 of 52014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 3 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 5 RIS 2014-07, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 1 of 52014-06-19019 June 2014 Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 1 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 2 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 3 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 5, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 5 DCL-14-030, Diablo, Units 1 and 2 - Report of 10 CFR 50.59, Changes, Tests and Experiments, for the Period of January 1, 2012 Through December 31, 20132014-04-17017 April 2014 Diablo, Units 1 and 2 - Report of 10 CFR 50.59, Changes, Tests and Experiments, for the Period of January 1, 2012 Through December 31, 2013 DCL-14-021, Reactor Coolant System Pressure and Temperature Limits Report for Units 1 and 22014-03-25025 March 2014 Reactor Coolant System Pressure and Temperature Limits Report for Units 1 and 2 ML13364A1922014-02-0303 February 2014 Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) DCL-13-094, and Humboldt Bay Power Plant, 10 CFR 71.95 Reports Regarding Energysolutions' Model 8-120B Shipping Cask2013-09-30030 September 2013 and Humboldt Bay Power Plant, 10 CFR 71.95 Reports Regarding Energysolutions' Model 8-120B Shipping Cask DCL-12-080, Nonroutine Report of Planned Disturbance of Archaeological Site SLO-22012-08-21021 August 2012 Nonroutine Report of Planned Disturbance of Archaeological Site SLO-2 DCL-12-050, Diablo Canyon, Units 1 and 2, Attachment 16 to DCL-12-050, PGE-12-52 Np, Westinghouse Input to Diablo Canyon Digital Process Protection System Replacement Uncertainty Calculations Summary Lar.2012-06-0606 June 2012 Diablo Canyon, Units 1 and 2, Attachment 16 to DCL-12-050, PGE-12-52 Np, Westinghouse Input to Diablo Canyon Digital Process Protection System Replacement Uncertainty Calculations Summary Lar. ML12170A8402012-06-0606 June 2012 Attachment 16 to DCL-12-050, PGE-12-52 Np, Westinghouse Input to Diablo Canyon Digital Process Protection System Replacement Uncertainty Calculations Summary Lar. DCL-12-023, Third Interval Snubber Program, Revision 12012-02-28028 February 2012 Third Interval Snubber Program, Revision 1 DCL-11-136, Annual Update to the DCPP License Renewal Application and License Renewal Application Amendment Number 452011-12-21021 December 2011 Annual Update to the DCPP License Renewal Application and License Renewal Application Amendment Number 45 DCL-11-073, Diablo Canyon, Unit 2 - Core Operating Limits Report for Cycle 172011-06-18018 June 2011 Diablo Canyon, Unit 2 - Core Operating Limits Report for Cycle 17 ML1116803532011-06-18018 June 2011 Core Operating Limits Report for Cycle 17 ML1109402692011-04-0505 April 2011 Evaluation Regarding the 2009 Steam Generator Tube Inspections Performed During the 15th Refueling Outage (2R15) DCL-10-158, CFR 54.21(b) Annual Update to the DCPP License Renewal Application and Amendment No. 342010-12-29029 December 2010 CFR 54.21(b) Annual Update to the DCPP License Renewal Application and Amendment No. 34 ML1025803172010-08-0202 August 2010 2009 Meteorological Data 2024-06-14
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Julianne Polanco State Historic Preservation Officer California Office of Historic Preservation 1725 23rd Street, Suite 100 Sacramento, CA 95816
SUBJECT:
NATIONAL HISTORIC PRESERVATION ACT SECTION 106 CONSULTATION
- RESULTS OF IDENTIFICATION AND EVALUATION (DOCKET NUMBER: 72-26)
Dear Julianne Polanco:
The U.S. Nuclear Regulatory Commission (NRC) received a request from Pacific Gas & Electric Company (PG&E) to renew special nuclear materials (SNM) license SNM-2511 for the Diablo Canyon (DC) independent spent fuel storage installation (ISFSI), located in San Luis Obispo County, California, for an additional 40 years (Agencywide Documents Access and Management System [ADAMS] ML22068A189). The DC ISFSI site-specific license, issued on March 22, 2004, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) Part 72 Licensing Requirements for the Independent Storage of Spent Nuclear Fuel and High-Level Radioactive Waste, and Reactor-Related Greater than Class C Waste, authorized PG&E to receive, possess, store, and transfer spent nuclear fuel and associated radioactive materials resulting from the operation of the Diablo Canyon Nuclear Power Plant (DCPP) for a license term of 20 years (i.e., expiring on March 22, 2024). In accordance with 10 CFR 72.42, the DC ISFSI license is considered to be on timely renewal. On September 8, 2022, the NRC staff accepted PG&Es license renewal application for detailed technical review (ML22238A239).
The NRC staff is conducting a safety review and an environmental review of PG&Es license renewal request for the DC ISFSI. Regarding the environmental review, the NRC staff is preparing an environmental assessment (EA) in accordance with the NRC regulations in 10 CFR 51, Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions, which implement the National Environmental Policy Act of 1969, as amended (NEPA). The NRC staff will document the analysis of potential effects to historic and cultural resources in the EA. Further, consistent with 36 CFR 800.8, Coordination with the National Environmental Policy Act, the NRC staff is coordinating compliance with the Section 106 process of the National Historic Preservation Act of 1966, as amended (NHPA), with its NEPA review process.
June 14, 2024
J. Polanco 2
The NRC staffs analysis of potential effects to historic and cultural resources from the undertaking considered the information provided by the California State Historic Preservation Office (CA SHPO), federally recognized Indian Tribes, the licensee PG&E, and organizations with a demonstrated interest in the undertaking including other appropriate local Indian Tribes.
The NRC staff also noticed the receipt and acceptance for docketing of PG&Es request to renew the DC ISFSI specific license in the Federal Register (FR) (see 88 FR 1431).
After evaluating the information gathered, the NRC staff finds that no historic properties would be affected by the undertaking, consistent with 36 CFR 800.4(d)(1). As discussed in more detail in Enclosure 1, the NRC did not identify any historic properties present within the direct area of potential effects (APE), which consists of the 2.02 hectares (5-acre) area of the ISFSI site.
While there are historic properties in the indirect APE, defined by a 5.4 km (6 mi) radius from the ISFSI license boundary, these would not be impacted by continued operation of the ISFSI.
Additionally, radiation levels from the storage of the DCPP spent nuclear fuel in the ISFSI would be well below the regulatory limits in 10 CFR 72 and 10 CFR 20, Standards for Protection Against Radiation for the workers and the public (assumed to be at the licensed boundary).
Consistent with 36 CFR 800.4(d)(1)(i), the NRC staff is providing its results of identification and evaluation to the CA SHPO and will consider its responsibilities under Section 106 of the NHPA fulfilled if the SHPO does not object within 30 days of this letter. Additionally, the NRC staff is providing copies of this letter to all consulting parties and planning to place the historic and cultural resources section of the EA on the NRC project website for public review.
This letter is publicly available in the NRC Public Document Room located at One White Flint North, 11555 Rockville Pike, Rockville, Maryland 20852, or from the NRCs ADAMS. The ADAMS Public Electronic Reading Room is accessible at:
http://www.nrc.gov/readingrm/adams.html. The ADAMS Accession Number for this letter is ML24129A176.
J. Polanco 3
If you have any questions, please contact the historical and cultural subject matter expert, Jean Trefethen of my staff via email at jean.trefethen@nrc.gov or via telephone at 301-415-0867, or the project manager, Isaac Johnston at isaac.johnston@nrc.gov or 301-415-5649.
Sincerely, Robert Sun, Chief Environmental Project Management Branch 2 Division of Rulemaking, Environmental, and Financial Support Office of Nuclear Material Safety and Safeguards Docket No.: 72-26
Enclosures:
As stated cc:
Santa Ynez Chumash Indians Tule River Tribe Yak Tityu Tityu Yak Tiłhini Northern Chumash Indians Northern Chumash Tribal Council Coastal Band of Chumash Indians San Luis Obispo County Chumash Indians Salían Tribe of Montgomery, San Luis Obispo Indian Tribes Signed by Sun, Robert on 06/14/24
1 Enclosure Diablo Canyon Independent Spent Fuel Storage Installation License Renewal Application Finding of No Historic Properties Affected Undertaking The undertaking is the renewal of the Pacific Gas & Electric Company (PG&Es) specific license SNM-2511 for the Diablo Canyon (DC) independent spent fuel storage installation (ISFSI) for an additional 40 years beyond the licenses expiration date (March 22, 2024) pursuant to section 72.42 of Title 10 of the Code of Federal Regulations (10 CFR). PG&E stores spent nuclear fuel from the operation of the Diablo Canyon Nuclear Power Plant (DCPP), located in San Luis Obispo County, California.
The ISFSI consists of seven storage pads, a cask transfer facility (CTF), an onsite cask transporter, and the dry cask storage system. PG&E uses the Holtec International HI-STORM 100 dry cask storage system, which consists of (1) steel multipurpose canisters (MPCs) that contain up to 24 or 32 spent fuel assemblies; (2) concrete overpacks that provide additional shielding for the MPCs in storage; and (3) a transfer cask that is used to move loaded and sealed MPCs from the DCPP fuel handling building to the ISFSI. The DC ISFSI can store up to 140 storage casks. Per PG&E, as of 2021, 7 loading campaigns have been completed resulting in a total of 58 loaded systems (see figure 1). Storage of spent fuel in the DC ISFSI is temporary pending the availability of a federal or private repository for interim or permanent disposal.
Figure 1. Diablo Canyon ISFSI Aerial View (Modified from Appendix F of PG&Es LAR)
2 If the U.S. Nuclear Regulatory Commission (NRC) approves PG&Es license renewal application (LRA) (Agencywide Documents Access and Management System (ADAMS)
ML22068A189), PG&E would continue to receive, possess, transfer, and store spent nuclear fuel and the other radioactive waste using the HI-STORM 100 dry cask storage system at the DC ISFSI for an additional 40 years. PG&E does not plan to conduct any major construction (e.g., major land disturbing activities, installing new ISFSI pads, or extending the ISFSI site boundary). In the future PG&E may, however, request authorization to use the Orano horizontal storage module (HSM) dry storage system for which PG&E would need to refurbish the current ISFSI pads (i.e., the embedded steel rings in the concrete pads would be removed, and the concrete pad would then be resurfaced to provide a flat smooth surface for storage of the HSM).
NRC approval of the licensees request to renew the DC ISFSI license for an additional 40 years would not result in approval to use the Orano HSM system.1 Figure 2. Diablo Canyon Power Plant Site Boundary (Modified from Appendix F of PG&Es LAR)
Area of Potential Effects As discussed in PG&Es LRA, the DC ISFSI is located on the central California coast in San Luis Obispo County adjacent to the Pacific Ocean and roughly equidistant from San Francisco and Los Angeles. This area is located along the coast directly southeast of Montana de Oro 1 On November 7, 2023, PG&E requested renewal of its NRC licenses to continue to operate the DCPP Units 1 and 2 for an additional 20 years beyond the period specified in each of the current licenses. The undertaking for the Diablo Canyon ISFSI license SNM-2511 is separate from the license renewal request to continue to operate the DCPP Units 1 and 2. The NRC staff is conducting the corresponding National Historic Preservation Act Section 106 process for that undertaking separately as discussed during meetings with the California State Historic Preservation Office (CA SHPO) on March 20 and April 4, 2024.
DC ISFSI
3 State Park and is approximately 19 kilometers (km) (12 miles [mi]) west-southwest of the city of San Luis Obispo. The DC ISFSI is located within the PG&E owner-controlled area of the DCPP site, which encompasses approximately 300 hectares (750-acre), and approximately 0.35 km (0.2 mi) northeast of the Unit 1. As documented in the NRC letter to the California State Historic Preservation Office (CA SHPO) dated November 15, 2023 (ML23296A098), the area of potential effects (APE) consists of the 2.02 hectares (5-acre) area of the ISFSI site to include the ISFSIs protected area, which is surrounded by a security fence, and the area adjacent to the ISFSI storage pads where the CTF is located (see figures 2 and 3). The indirect APE consists of a 5.4 km (6 mi) radius from the ISFSI site boundary.
Identification of Historic Properties As part of the issuance of license SNM-2511 for the DC ISFSI, the NRC staff reviewed PG&Es environmental report (ER) submitted with its license application on December 21, 2001 (ML020180196). This ER summarized the cultural resource investigations conducted in and around the DCPP site over the years, including an on-the-ground field survey of the area near the proposed DC ISFSI conducted in May and September 2000 and January 2001. These investigations and a records search by PG&E yielded no sites listed in or eligible for listing in the National Register of Historic Places (NRHP) within the APE of the proposed DC ISFSI.
However, one archaeological site listed in the NRHP (CA-SLO-2) is located within 150 m (492 ft) of the proposed ISFSI site. Seven other sites (CA-SLO-61, -584, -1159, -1160, -1161, -162, and -1163) are located within the 300 hectares (750-acre) exclusion zone surrounding DCPP but are not close to the DC ISFSI site. In 1980, PG&E incorporated an Archeological Resources Management Plan (ARMP) into the NRC operating licenses for the DCPP Units 1 and 2 to protect and manage the CA-SLO-2 site. Activities with the potential to affect the site are restricted.
Table 1. Historic and Cultural Sites within the DCPP Site Site No. (CA-SLO-)
Site Type NRHP Eligibility 2
Pre-contact Village Listed 61 Midden Eligible*
584 Short-term Residential Destroyed 1159 Short-term Residential Eligible*
1160 Short-term Residential Eligible*
1161 Short-term Residential Eligible*
1162 Short-term Residential Eligible*
1163 Lithic and shell scatter Eligible**
2865 Lithic and shell scatter Eligible**
2866 Location Eligible**
Source: Appendix F of PG&Es LAR
- Appears to meet National Register criteria
- Appears to meet National Register criteria as part of a District; SHPO has not yet concurred.
The NRC staff documented its environmental review of the 2001 license application in a 2003 environmental assessment (EA) and subsequent 2007 supplemental EA, both concluding with a finding of no significant impact (68 FR 61838 and 72 FR 51687, respectively). As part of the environmental review, the NRC staff analyzed potential impacts to historic and cultural
4 resources and concluded that construction, operation, and decommissioning of the proposed DC ISFSI would not result in the disturbance of the CA-SLO-2 site, or other cultural resource sites. The NRC staff consulted with the CA SHPO (ML031830830), who concurred with NRCs findings that historic properties would not be adversely affected by the proposed construction, operation, and decommissioning of the DC ISFSI (ML032320633).
In appendix F of PG&Es LRA for the DC ISFSI (the ER for the license renewal request), PG&E further explained that additional cultural resource investigations conducted since the 2001 field survey yielded the identification of site CA-SLO-2866 within the DCPP owner-controlled area, but not within the DC ISFSI APE.
Figure 03. 6-Mile Vicinity Map (Modified from Appendix F of PG&Es LAR)
PG&E, in conjunction with California State Parks, is also undertaking nomination of the Rancho Canada de los Osos y Pecho y Islay Archaeological District (Boundary Increase) (District). This District comprises 985 hectares (2,434 acres) and includes 84 contributing archaeological sites (15 previously listed resources and 69 nominated resources) and 22 non-contributing archaeological sites along the coastal terrace within PG&Es property (including portions of the
5 DCPP site) and Montana de Oro State Park, north of Avila Beach, in San Luis Obispo County, California. While the District includes portions of the DCPP site, there are no contributing resources present within or immediately adjacent to the DC ISFSI.
Consultations By letter dated November 15, 2023, the NRC staff initiated the Section 106 consultation with the CA SHPO (ML23296A098) and held an in-person meeting on March 20 (ML24109A191) followed by a virtual meeting on April 4, 2004. The NRC staff discussed the NRCs license renewal, environmental and cultural resources review processes, development and history of DCPP, and anticipated next steps. Additionally, the NRC provided an update on recent consultation with the tribes and discussions with the licensee. The NRC staff also initiated the Section 106 consultation with federally recognized Indian tribes Santa Ynez Chumash Indians (ML23291A270) and Tule River Tribe (ML23320A244) via letters dated November 28, 2023. On March 23, the NRC staff met with the Santa Ynez Chumash Indians to continue discussions about the proposed renewal of the DC ISFSI license and DCPP Units 1 and 2 (ML24109A188).
The NRC staff also reached out to the Yak Tityu Tityu Yak Tiłhini Northern Chumash Indians (ML23325A133), the Northern Chumash Tribal Council (ML23307A006), the Coastal Band of Chumash Indians (ML23325A129), the San Luis Obispo County Chumash Indians (ML23325A138), the Salian Tribe of Montgomery, San Luis Obispo (ML23325A132) via letters dated November 27, 2023. The Yak Tityu Tityu Yak Tiłhini Northern Chumash Indians responded via email dated January 20, 2024, requesting formal consultation (ML24045A197). The staff met on February 8 and March 22, 2024, with the Yak Tityu Tityu Yak Tiłhini Northern Chumash Indians (ML24127A133; ML24155A205). To date, the NRC staff has not received responses from other Tribes on the DC ISFSI LRA.
Results of Identification and Evaluation The proposed license renewal of the DC ISFSI would not affect historic properties within the APE. The NRC did not identify any historic properties present within the direct APE. Site CA-SLO-2 is within the indirect APE but would not be affected because, although continued operation of the DC ISFSI would result in exposure to radiological hazards, PG&E is required to maintain radiation levels below the regulatory limits in 10 CFR 72 and 10 CFR 20. Additionally, the DC ISFSI does not generate any liquid or gaseous effluents and the cask is a passive system designed to limit exposure to radiation. PG&E does not plan any major construction resulting in land disturbances as part of its license renewal request. Routine operations are largely passive except for the placement of additional casks, inspections and maintenance that would be the only continuing activities if the NRC renews the license. Transportation of the casks from the DCPP to the ISFSI would not affect any historic and cultural resources. Activities during the proposed license renewal period would continue to be managed in accordance with PG&Es ARMP to protect site CA-SLO-2. Accordingly, the NRC staff finds that the continued operation of the DC ISFSI for an additional 40 years would not affect historic properties consistent with 36 CFR 800.4(d)(1).
Ltr ML24129A176 OFFICE NMSS/REFS/EPMB2 NAME RSun DATE Jun 14, 2024