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Category:Annual Operating Report
MONTHYEARML22136A0842022-05-12012 May 2022 Independent Spent Fuel Storage Installation, 2021 Annual Radiological Environmental Operating Report ML18117A2382018-04-24024 April 2018 Submittal of Annual Radioactive Effluent Release Report for 2017 ML16134A1422016-05-10010 May 2016 Independent Spent Fuel Storage Facility (ISFSI) - Transmittal of 2015 Annual Radiological Environmental Operating Report ML14129A3882014-05-0707 May 2014 Independent Spent Fuel Storage Facility - 2013 Annual Radiological Environmental Operating Report ML13142A4252013-04-30030 April 2013 Annual Radioactive Effluent Release Report - 2012 ML12135A3812012-05-10010 May 2012 Independent Spent Fuel Storage Facility - 2011 Annual Radiological Environmental Operating Report ML1130602772011-11-0101 November 2011 2010 Emergency Core Cooling System Annual 10 CFR 50.46 Report ML1113101562011-05-0909 May 2011 Independent Spent Fuel Storage Facility - 2010 Annual Radiological Environmental Operating Report ML1035100222010-12-15015 December 2010 Emergency Core Cooling System, Annual 10 CFR 50.46 Report ML1013200852010-05-10010 May 2010 Annual Radiological Environmental Operating Report, and Independent Spent Fuel Storage Facility ML0932808562009-11-21021 November 2009 2008 Emergency Core Cooling System Annual 10 CFR 50.46 Report, San Onofre Nuclear Generating Station, Units 2 & 3 ML0913206372009-05-11011 May 2009 Independent Spent Fuel Storage Facility, 2008 Annual Radiological Environmental Operating Report ML0835102322008-12-10010 December 2008 Annual Corporate Financial Reports ML0611705382006-04-24024 April 2006 ISFSI - 2005 Annual Radiological Environmental Operating Report ML0535301262005-12-15015 December 2005 2004 Emergency Core Cooling System Annual 10 CFR 50.46 Report for San Onofre Units 2 and 3 ML0436503542004-12-23023 December 2004 2003 Emergency Core Cooling System Annual 10 CFR 50.46 Report, San Onofre Nuclear Generating Station, Units 2 and 3 ML0412602002004-04-29029 April 2004 2003 Annual Radiological Environmental Operating Report ML0413304212004-03-11011 March 2004 Southern California Edison Company - 2002 Annual Report ML0312502822003-04-25025 April 2003 2002 Annual Radiological Environmental Operating Report for San Onofre, Units 1, 2 and 3 2022-05-12
[Table view] Category:Letter
MONTHYEARIR 05000361/20240042024-08-0909 August 2024 NRC Inspection Report 05000361/2024004 and 05000362/2024004 ML24191A2472024-07-0202 July 2024 (Songs), Units 1, 2, and 3, and the Independent Spent Fuel Storage Installation - Revision to the ISFSI-Only Emergency Plan and Associated Changes to Emergency Plan Implementing Procedures ML24151A6482024-06-0303 June 2024 Changes in Reactor Decommissioning Branch Project Management Assignments for Some Decommissioning Facilities ML24141A0802024-05-15015 May 2024 (Songs), Units 1, 2 and 3 and Independent Spent Fuel Storage Installation - 2023 Annual Radiological Environmental Operating Report IR 05000361/20240022024-04-0101 April 2024 – NRC Inspection Report 050-00361/2024-002 and 050-00362/2024-002 ML24094A0642024-03-27027 March 2024 Independent Spent Fuel Storage Installation, Decommissioning Funding Status Report 2023 ML24065A0152024-02-28028 February 2024 Generation Station Units 1, 2 and 3, Annual Radioactive Effluent Release Report for Independent Spent Fuel Storage Installation 2023 ML24044A0812024-02-14014 February 2024 LTR-24-0008: NRC Response to Paul Blanch Email Safety of Spent Nuclear Fuel at SONGS ISFSI IR 05000361/20240012024-02-13013 February 2024 NRC Inspection Report 050-00361/2024-001 and 050-00362/2024-001 (1) ML24037A0542024-01-30030 January 2024 (Songs), Units 2 and 3, Submittal of Annual Corporate Financial Reports ML24022A1492024-01-17017 January 2024 Independent Spent Fuel Storage Installation, Revision 4 to the Physical Security Plan IR 05000361/20230062023-11-29029 November 2023 NRC Inspection Report 05000361/2023-006 and 05000362/2023-006 ML23333A0682023-11-22022 November 2023 (SONGS) Units 1, 2, 3 and Independent Spent Fuel Storage Installation - Notification of Change in Nuclear Officer IR 05000361/20230052023-10-11011 October 2023 NRC Inspection Report 05000361/2023005 and 05000362/2023005 ML23276A5942023-09-28028 September 2023 and Independent Spent Fuel Storage Installation - Supplement to Decommissioning Funding Status Reports ML23268A0922023-09-20020 September 2023 Generation Station, Units 1, 2 and 3, and the Independent Spent Fuel Storage Facility (ISFSI) - Re-Registration of Dry Fuel Storage Casks for Amended Certificate of Compliance No. 1040 IR 05000361/20230012023-09-13013 September 2023 NRC Inspection Report 05000361 2023-001 and 05000362 2023-004 ML23240A5372023-08-18018 August 2023 Confirmatory Survey Activities Summary and Results for the Unit 2 and 3 Intake Structures at the San Onofre Nuclear Generating Station San Clemente CA ML23129A1802023-06-14014 June 2023 Cover Letter to State of CA on Draft EA Regarding San Onofre ISFSI Updated DFPs IR 05000361/20230032023-05-31031 May 2023 NRC Inspection Report 05000361/2023003 and 05000362/2023003 IR 05000361/20230022023-05-23023 May 2023 NRC Inspection Report 05000361/2023-002 and 05000362/2023-002 ML23137A1032023-05-11011 May 2023 (Songs), Units 1, 2 and 3, and Independent Spent Fuel Storage Installation - 2022 Annual Radiological Environmental Operating Report ML23123A0932023-04-28028 April 2023 (Songs), Units 1, 2 and 3, Submittal of Annual Radioactive Effluent Release Report - 2022 ML23230A0882023-04-10010 April 2023 Independent Spent Fuel Storage Installation - Decommissioning Quality Assurance Plan ML23094A1332023-03-29029 March 2023 Nuclear Property Insurance ML23094A1272023-03-29029 March 2023 Independent Spent Fuel Storage Installation - 10 CFR 50.82(a)(8)(v and VII) and 10 CFR 72.30(c) Decommissioning Funding Status Report 2021 ML23062A1172023-02-28028 February 2023 Generation Station Units 1, 2 and 3, Annual Radioactive Effluent Release Report for Independent Spent Fuel Storage Installation - 2022 ML22361A1022023-02-24024 February 2023 Reactor Decommissioning Branch Project Management Changes for Some Decommissioning Facilities and Establishment of Backup Project Manager for All Decommissioning Facilities ML23059A2812023-02-22022 February 2023 (Songs), Units 1, 2 and 3, 2022 Annual Turtle Incidental Take Report ML23046A3792023-02-22022 February 2023 NRC Inspection Report 050-00361/2023-001 and 050-00362/2023-001 ML23045A2022023-02-0909 February 2023 Submittal of Annual Corporate Financial Reports for San Onofre Nuclear Generating Station (SONGS) Units 2 and 3 for Fy Ending June 30, 2022 ML22287A1352023-01-0505 January 2023 Issuance of Exemption from Title 10 of the Code of Federal Regulations Part 72.106(B), Independent Spent Fuel Storage Installation Controlled Area Boundary (L-2021-LLE-0056) ML22348A0622023-01-0404 January 2023 NRC to SCE, Transmittal of the National Marine Fisheries Service'S December 12, 2022, Letter of Concurrence for Decommissioning of San Onofre Nuclear Generating Statiion, Units 2 and 3 IR 05000206/20220062022-12-15015 December 2022 NRC Inspection Report 05000206/2022006, 05000361/2022-006, and 05000362/2022-006 ML22347A2122022-12-12012 December 2022 NMFS to NRC, Endangered Species Act Section 7(a)(2) Concurrence Letter for Decommissioning of the San Onofre Nuclear Generating Station ML22340A6652022-12-0505 December 2022 Letter from John Fassell, Chief; Re., State of California Department of Public Health Review and Comments on SONGS Draft Environmental Assessment ML22333A8192022-11-21021 November 2022 Submittal of San Onofre Nuclear Generating Station, Units 2 and 3, Defueled Safety Analysis Report, Revised November 2022 IR 05000361/20220052022-11-17017 November 2022 NRC Inspection Report 05000361/2022-005 and 05000362/2022-005 ML22301A1462022-10-20020 October 2022 Report of Violations of the National Pollutant Discharge Elimination System Permit San Onofre Nuclear Generating Station (Songs), Units 2 and 3 ML22277A0162022-09-29029 September 2022 Independent Spent Fuel Storage Installation Response to Request for Additional Information Regarding Request for Exemption from 10 CFR 72.106(b) IR 05000361/20220042022-09-26026 September 2022 NRC Inspection Report 05000361/2022-004 and 05000362/2022-004 ML22238A0552022-08-29029 August 2022 U.S. Nuclear Regulatory Commission'S Analysis of Southern California Edison'S Decommissioning Funding Status Report for San Onofre Nuclear Generating Station, Units 1, 2, and 3 ML22234A1602022-07-31031 July 2022 Final Report Per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. 18CLVS431 ML22207B8612022-07-26026 July 2022 NRC (Public) Inspection Report 05000361/2022003; 05000362/2022003 IR 05000361/20220032022-07-26026 July 2022 NRC Inspection Report (Public) 05000361-2022003 and 05000362-2022003 (002) IR 05000361/20220022022-05-12012 May 2022 NRC Inspection Report 05000361/2022-002 and 05000362/2022-002 ML22136A0842022-05-12012 May 2022 Independent Spent Fuel Storage Installation, 2021 Annual Radiological Environmental Operating Report ML22122A0402022-04-28028 April 2022 (Songs), Units 1, 2 and 3 - Annual Radioactive Effluent Release Report - 2021 ML22105A5662022-04-0505 April 2022 20053 Letter - OI Closure to Licensee - Wrongdoing Signed ML22081A1692022-03-31031 March 2022 SONGS Application Acceptance Proposed Exemption from Title 10 of the CFR, Part 72.106(b), ISFSI Controlled Boundary 2024-08-09
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SOUTHERN CALIFORNIA Richard J. St. Onge EDISON Director, Nuclear Regulatory Affairs and Emergency Planning An EDISON INTERNATIONAL Compan y 10 CFR 50.46 November 1, 2011 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Wash ington, D. C. 20555
Subject:
Docket Nos. 50-361 and 50-362, 2010 Emergency Core Cooling System Annual 10 CFR 50.46 Report, San Onofre Nuclear Generating Station, Units 2 and 3
References:
Letter from R. J. St. Onge (SCE) to Document Control Desk (NRC) ,
dated December 15,2010,
Subject:
Docket Nos. 50-361 and 50-362, 2009 Emergency Core Cooling System, Annual 10 CFR 50.46 Report, San Onofre Nuclear Generating Station , Units 2 and 3
Dear Sir or Madam:
This letter transmits as Enclosures 1 and 2 the San Onofre Units 2 and 3 annual report for the 2010 calendar year required by paragraph (a)(3)(ii) of 10 CFR 50.46, "Acceptance criteria for emergency core cooling systems for light-water nuclear power reacto rs." This regulation requires Southern California Edison (SCE) to annually report to the NRC for San Onofre Units 2 and 3 the nature of each change to , or error discovered in, the Emergency Core Cooling System (ECCS) evaluation model , or in the application of this model that affects the temperature calculation and estimated effects of any such changes , errors , or appl ications on the limiting ECCS analysis. Any significant change or error is required to be reported to the NRC within 30 days.
The previous Emergency Core Cooling System Annual 10 CFR 50.46 Report was submitted to the NRC in the above Reference.
Enclosure 1 is a description of changes or errors in the Westinghouse evaluation models (EM) used in the San Onofre Nuclear Generating Station (SONGS) Units 2 and 3 ECCS performance analyses Enclosure 2 is a summary of the effect on Peak Clad Temperature (PCT) of the errors or changes in the Westinghouse evaluation models used in the SONGS Units 2 and 3 ECCS performance Analyses. While not limiting with regard to PCT, information for the Small Break Loss of Coolant Accident (LOCA) is also included in Enclosure 2 (in accordance with Supplement 1 to Information Notice 97-15).
SCE made no changes to the LOCA evaluation models.
P.O . Box 128 San Clemente, CA 92672
Document Control Desk November 1, 2011 Operating Cycle Information Unit 2 and Unit 3 operation for the current reporting period is outlined below.
Reporting Calendar Year 2010 Unit Cycle 15 Cycle 16 April 11, 2010
- 2 Ended prior to 2010 through December 31, 2010 January 1, 2010 3 Through Did not start in 2010 October 10,2010 **
- Unit 2 was in refueling outage the early part of 2010.
- Unit 3 was in refueling outage the remainder of 2010.
2010 REPORTING PERIOD SONGS Units 2 and 3 Large Break LOCA Evaluation Model (EM)
The Large Break LOCA (LBLOCA) analysis used the 1999 evaluation mode for this reporting period.
The limiting Large Break LOCA PCT did not exceed the 10CFR50.46(b)(1) acceptance criterion of 2,200 of . This is documented in Enclosure 2 (Table 1).
There are no cumulative (sum of the absolute magnitudes of PCT changes) 1999 EM Large Break LOCA 10CFR 50.46 model changes or model errors. This is documented in Enclosure 2 (Table 2).
SONGS Units 2 and 3 Small Break LOCA Evaluation Model (EM)
The Small Break LOCA (SBLOCA) analysis used the Supplement 2 Model (S2M) Small Break LOCA evaluation model for this reporting period.
Document Control Desk November 1, 2011 The limiting Small Break LOCA PCT did not exceed the 10CFR50.46(b)(1) acceptance criterion of 2,200 of , and remained bounded by the large break LOCA PCT. This is documented in Enclosure 2 (Table 3).
There are no cumulative (sum of the absolute magnitudes of PCT changes) S2M Evaluation Model Small Break LOCA 10CFR50.46 model changes and model errors.
This is documented in Enclosure 2 (Table 4).
If you have any questions or need additional information on this subject, please contact Ms. L. T. Conklin at 949/368-9443.
Enclosures:
- 1. Description of Changes and Errors in the Westinghouse Evaluation Models used in the SONGS Units 2 and 3 ECCS Performance Analyses (Calendar Year 2010)
- 2. Summary of the Effect on PCT of the Errors or Changes in the Westinghouse Evaluation Models used in the SONGS Units 2 and 3 ECCS Performance Analyses (Calendar Year 2010) cc: E. E. Collins , Regional Administrator, NRC Region IV R. Hall , NRC Project Manager, San Onofre Units 2 and 3 G. G. Warnick, NRC Senior Resident Inspector, San Onofre Units 2 and 3
Enclosure 1 Description of Changes and Errors in the Westinghouse Evaluation Models Used in the SONGS Units 2 and 3 ECCS Performance Analyses (Calendar Year 2010)
(2 pages includ ing this page)
Enclosure 1, Page 1 of 2
- 1. 1999 EM Version of the Westinghouse Appendix K Large Break LOCA Evaluation Model for Combustion Engineering PWRs None .
- 2. S2M Version of the Westinghouse Appendix K Small Break LOCA Evaluation Model for Combustion Engineering PWRs None.
Enclosure 1, Page 2 of 2
Enclosure 2 Summary of the Effect on PCT of the Errors or Changes in the Westinghouse Evaluation Models Used in the SONGS Units 2 and 3 ECCS Performance Analyses (Calendar Year 2010)
(5 pages including this page)
Enclosu re 2, Page 1 of 5
2010 REPORTING PERIOD LOSS OF COOLANT ACCIDENT (LOCA) MARGIN
SUMMARY
SAN ONOFRE NUCLEAR GENERATING STATION UNITS 2 AND 3 Large Break LOCA Table 1 provides a time line of the items which could affect the Large Break LOCA (LBLOCA) peak cladding temperature (PCT) for this reporting period . The LBLOCA 10 CFR 50.46 PCT limit of 2,200°F was not exceeded .
Table 1 Limiting Large Break LOCA PCT Unit2 Unit 3 Limiting Large Break LOCA PCT End 0'2009 2,170 °F 2,170 of Changes in PCT during 2010 due to:
a) Model changes or Model errors (1999 EM)
b) Cycle Dependent Input Changes
Limiting Large Break LOCA PCT End 0'2010 2,174°F 2,170 of
- Unit 2 operated only under Cycle 16 in 2010 , hence no input for this entry.
- Unit 3 operated only under Cycle 15 in 2010 , hence no input for this entry.
Enclosu re 2, Page 2 of 5
The cumulative effect of the 10 CFR 50.46 model changes and model errors for the Large Break LOCA 1999 Evaluation Model are shown in Table 2.
Table 2 Cumulative Large Break LOCA 10 CFR 50.46 Model Changes and Model Errors r ILl PCTI (1) t2 IUnit31
[;J Cumulative LBLOCA 10 CFR 50.46 Model Changes and Model Errors Prior to 2010 o of Changes in LBLOCA PCT due to Model Changes and Model Errors During 2010
Cumulative LBLOCA 10 CFR 50.46 Model Changes and Model Errors End 0'2010 o of O°F
- Unit 2 operated only under Cycle 16 in 2010, hence no input for this entry.
- Unit 3 operated only under Cycle 15 in 2010 , hence no input for this entry.
Enclosure 2, Page 3 of 5 (1) Sum of the absolute magnitude of the 10 CFR 50.46 model changes and model errors.
Small Break LOCA Table 3 provides a time line of the items which could affect the Small Break LOCA (SBLOCA) peak cladding temperature (PCT) for this reporting period. The SBLOCA 10 CFR 50.46 PCT limit of 2200 of was not exceeded, and the SBLOCA PCT rema ined bounded by the LBLOCA PCT.
Table 3 Limiting Small Break LOCA PCT Unit2 Unit 3 Limiting Small Break LOCA PCT End 0'2009 2,077 of 2,077 of Changes in PCT during 2010 due to:
a) Model changes or Model errors
°of °of b) Cycle Dependent Input Changes
°of °of Limiting Small Break LOCA PCT End 0'2010 2,077 of 2,077 of
- Unit 2 operated only under Cycle 16 in 2010 , hence no input for this entry.
- Unit 3 operated only under Cycle 15 in 2010, hence no input for this entry.
Enclosure 2, Page 4 of 5
The cumulative 10 CFR 50.46 model changes and model errors for the Small Break LOCA S2M Evaluation Model are shown in Table 4.
Table 4 Cumulative Small Break LOCA 10 CFR 50.46 Model Changes and Model Errors r 1L1 PCTI (2)
Unit2 Unit3 Cumulative SBLOCA 10 CFR 50.46 Model Changes and Model Errors Prior to 2010 o of o of Changes in SBLOCA PCT due to Model Changes and Model Errors During 2010
Cumu lative SBLOCA 10 CFR 50.46 Model Changes and Model Errors End of 2010 o of o of
- Unit 2 opera ted only under Cycle 16 in 2010 , hence no input for this entry.
- Unit 3 operated only under Cycle 15 in 2010 , hence no input for this entry.
Enclosure 2, Page 5 of 5 (2) Sum of the absolute magnitude of the 10 CFR 50.46 model changes and model errors .