Letter Sequence Other |
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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance, Acceptance, Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement
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MONTHYEARAEP-NRC-2020-59, For Donald C. Cook Nuclear Plant (CNP) Unit 2 - Report Per Technical Specification 5.6.6, Lnoperability of Unit 2, Post Accident Monitoring, Containment Water Level2020-08-27027 August 2020
For Donald C. Cook Nuclear Plant (CNP) Unit 2 - Report Per Technical Specification 5.6.6, Lnoperability of Unit 2, Post Accident Monitoring, Containment Water Level
Project stage: Request
AEP-NRC-2020-76, Report Per Technical Specification 5.6.6, Inoperability of Unit 1, Post Accident Monitoring, Containment Water Level2020-11-24024 November 2020
Report Per Technical Specification 5.6.6, Inoperability of Unit 1, Post Accident Monitoring, Containment Water Level
Project stage: Request
AEP-NRC-2021-07, Supplement to Report Per Technical Specification 5.6.6, Lnoperability of Unit 1, Post Accident Monitoring, Containment Water Level2021-01-28028 January 2021
Supplement to Report Per Technical Specification 5.6.6, Lnoperability of Unit 1, Post Accident Monitoring, Containment Water Level
Project stage: Request
ML21090A1852021-03-31031 March 2021
Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
Project stage: Request
ML21125A0452021-05-0404 May 2021
NRR E-mail Capture - LIC-109 Acceptance Review (Unacceptable for Review with Opportunity to Supplement) - Callaway Plant, Unit 1 - License Amendment Request - Final Resolution to Address Concerns of GSI-191 - EPID L-2021-LLA-0059
Project stage: Acceptance Review
ML21130A5882021-05-11011 May 2021
Supplemental Information Needed for Acceptance of Requested Licensing Actions to Adopt a Risk-Informed Approach to Address GSI-191 and Respond to Generic Letter 2004 02
Project stage: Acceptance Review
ULNRC-06664, Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)2021-05-27027 May 2021
Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
Project stage: Supplement
ML21160A1482021-06-10010 June 2021
Acceptance of Requested Licensing Actions License Amendment and Regulatory Exemptions for a Risk Informed Approach to Address Generic Safety Issue 191 and Respond to Generic Letter 2004-02
Project stage: Acceptance Review
ML21203A1932021-07-22022 July 2021
Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL-2004-02 (LDCN 19-0014)
Project stage: Request
ML21203A1922021-07-22022 July 2021
Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL-2004-02 (LDCN 19-0014)
Project stage: Request
ML21197A0632021-07-23023 July 2021
Audit Plan and Setup of Online Reference Portal for License Amendment Request Risk-Informed Approach for Closure of Generic Safety Issue-191
Project stage: Other
ML21237A1352021-08-23023 August 2021
Amendment Request Regarding Risk-Informed Approach to Closure of Generic Safety Issue 191
Project stage: Request
ML21237A1362021-08-23023 August 2021
Amendment Request Regarding Risk-Informed Approach to Closure of Generic Safety Issue 191
Project stage: Other
ML21238A1382021-09-14014 September 2021
Audit Summary for License Amendment Request and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02
Project stage: Other
ML21280A3782021-10-0707 October 2021
Third Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL-2004-02 (LDCN 19-0014)
Project stage: Request
ML21280A3792021-10-0707 October 2021
Third Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL-2004-02 (LDCN 19-0014)
Project stage: Supplement
ML21307A3352021-11-0303 November 2021
NRR E-mail Capture - D.C. Cook Nuclear Plant Unit Nos. 1 and 2 - Final RAI - License Amendment Request Regarding Containment Water Level Instrumentation
Project stage: RAI
ML22027A8042022-01-27027 January 2022
Fourth (Post-Audit) Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
Project stage: Request
ML22027A8052022-01-27027 January 2022
Fourth (Post-Audit) Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
Project stage: Supplement
ULNRC-06721, Fifth (Post-Audit) Supplement Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)2022-03-0808 March 2022
Fifth (Post-Audit) Supplement Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
Project stage: Supplement
ML22068A0292022-03-0808 March 2022
Response to Audit Question/Item 23 in NRC Letter Dated September 14, 2021
Project stage: Other
ML22068A0272022-03-0808 March 2022
Fifth (Post-Audit) Supplement Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
Project stage: Request
ML22087A4022022-03-28028 March 2022
NRR E-mail Capture - Callaway - Draft RAIs - License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address Generic Safety Issue - 191 and Respond to Generic Letter 2004-02 (EPIDs L-2021-LLA-0059 and L-2021-LLE-0021)
Project stage: Draft RAI
ML22096A0232022-04-0505 April 2022
NRR E-mail Capture - Callaway Plant - Final RAIs - License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address Generic Safety Issue - 191 and Respond to GL 2004-02 (EPIDs L-2021-LLA-0059 and L-2021-LLE-0021)
Project stage: RAI
ML22146A3392022-05-26026 May 2022
Enclosure 1: Ameren Missouri Response to NRC RAIs
Project stage: Response to RAI
ML22146A3372022-05-26026 May 2022, 27 May 2022
Response to Request for Additional Information Regarding Request for License Amendment and Regulatory Exemptions for Risk-Informed Approach to Address GSI-191 and Respond to Generic Letter 2004-02 (LDCN 19-0014)
Project stage: Request
ULNRC-06735, Response to Request for Additional Information Regarding Request for License Amendment and Regulatory Exemptions for Risk-Informed Approach to Address GSI-191 and Respond to Generic Letter 2004-02 (LDCN 19-0014).2022-05-27027 May 2022
Response to Request for Additional Information Regarding Request for License Amendment and Regulatory Exemptions for Risk-Informed Approach to Address GSI-191 and Respond to Generic Letter 2004-02 (LDCN 19-0014).
Project stage: Response to RAI
ML22182A4012022-08-23023 August 2022
Callaway - Environmental Assessment & Finding of No Significant Impact Requests for Amendment & Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (EPID L-2021-LLA-0059 & L-2021-LLE-0021)
Project stage: Request
ML22182A4112022-08-23023 August 2022
Letter - Environmental Assessment & Finding of No Significant Impact Requests for Amendment & Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (EPID L-2021-LLA-0059 & L-2021-LLE-00021)
Project stage: Other
ML22182A4062022-08-23023 August 2022
FRN - Environmental Assessment & Finding of No Significant Impact Requests for Amendment & Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (EPID L-2021-LLA-0059 & L-2021-LLE-0021)
Project stage: Other
ULNRC-06766, Correction of Text Contained in Enclosures Provided with Supplements to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)2022-09-0808 September 2022
Correction of Text Contained in Enclosures Provided with Supplements to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
Project stage: Supplement
ML22220A1322022-10-21021 October 2022
Issuance of Amendment No. 228 Re; Revise Technical Specifications to Address Generic Safety Isusue-191 and Respond to Generic Letter 2004-02 Using Risk-Informed Approach
Project stage: Approval
ML22220A1302022-10-21021 October 2022
Exemptions from the Requirements of 10 CFR 50.46 and 10 CFR Part 50 Appendix a, General Design Criteria 35, 38, and 41 (EPID L-2021-LLE-0021) (Cover Letter)
Project stage: Other
ML22220A1312022-10-21021 October 2022
Exemptions from the Requirements of Title 10 of the Code of Federal Regulations (10 CFR) Section 50.46, 10 CFR 50 Appendix a General Design Criteria 35, 38, and 41 (EPID L-2021-LLE-0021) (Exemptions)
Project stage: Other
ML22220A1292022-10-25025 October 2022
Exemptions from the Requirements of Title 10 of the Code of Federal Regulations (10 CFR) Section 50.46, 10 CFR 50 Appendix a General Design Criteria 35, 38, and 41 (EPID L-2021-LLE-0021) (FRN)
Project stage: Other
2021-07-23
[Table View] |
Text
October 21, 2022 Mr. Fadi Diya Senior Vice President and Chief Nuclear Officer Ameren Missouri Callaway Energy Center 8315 County Road 459 Steedman, MO 65077
SUBJECT:
CALLAWAY PLANT, UNIT NO. 1 - EXEMPTIONS FROM THE REQUIREMENTS OF 10 CFR 50.46 AND 10 CFR PART 50, APPENDIX A, GENERAL DESIGN CRITERIA 35, 38, AND 41 (EPID L-2021-LLE-0021)
Dear Mr. Diya:
The U.S. Nuclear Regulatory Commission (NRC) has approved the enclosed exemptions from specific requirements of Title 10 of the Code of Federal Regulations (10 CFR) Section 50.46, Acceptance criteria for emergency core cooling systems for light-water nuclear power reactors, and 10 CFR Part 50, Appendix A, General Design Criteria for Nuclear Power Plants, General Design Criterion (GDC) 35, Emergency core cooling; GDC 38, Containment heat removal; and GDC 41, Containment atmosphere cleanup, for Callaway Plant, Unit No. 1. This action is in response to your application dated March 31, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML21090A184), as supplemented by letters dated May 27, 2021, July 22, 2021, August 23, 2021, October 7, 2021, January 27, 2022, March 8, 2022, May 26, 2022, and September 8, 2022 (ML21147A222, ML21203A192, ML21237A135, ML21280A378, ML22027A804, ML22068A027, ML22146A337, and ML22251A343, respectively). Union Electric Company, dba Ameren Missouri (the licensee),
requested exemptions pursuant to 10 CFR 50.12, Specific exemptions, to allow use of a risk-informed methodology instead of the traditional deterministic methodology; to resolve the concerns associated with Generic Safety Issue (GSI)-191, Assessment of Debris Accumulation on PWR [Pressurized Water Reactor] Sump Performance; and respond to Generic Letter (GL) 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized Water Reactors, dated September 13, 2004 (ML042360586).
As part of the actions to resolve concerns associated with GSI-191, the NRC issued GL 2004-02 to holders of operating licenses for PWRs. In GL 2004-02, the NRC staff requested that licensees perform an evaluation of their emergency core cooling system (ECCS) and containment spray system (CSS) recirculation functions considering the potential for debris-laden coolant to be circulated by the ECCS and the CSS after a loss-of-coolant accident or high energy line break inside containment and, if appropriate, take additional actions to ensure system function. GL 2004-02 required that licensees provide a written response to the NRC, pursuant to 10 CFR 50.54(f), describing the results of their evaluation and any modifications made, or planned, to ensure the ECCS and CSS remain functional.
The exemptions are being forwarded for publication to the Office of the Federal Register.
If you have any questions, please contact me at 301-415-8371 or via e-mail at Mahesh.Chawla@nrc.gov.
Sincerely,
/RA Siva Lingam for/
Mahesh L. Chawla, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-483
Enclosure:
Exemptions cc: Listserv
ENCLOSURE EXEMPTIONS FROM THE REQUIREMENTS OF 10 CFR 50.46 AND 10 CFR PART 50, APPENDIX A, GENERAL DESIGN CRITERIA 35, 38 AND 41 ASSOCIATED WITH GSI-191 AND GL 2004-02 UNION ELECTRIC COMPANY DBA AMEREN MISSOURI CALLAWAY PLANT, UNIT NO. 1 DOCKET NO. 50-483
LETTER: ML22220A130 EXEMPTIONS: ML22220A131 FRN: ML22220A129 (not included)
- by email OFFICE NRR/DORL/LPL4/PM*
NRR/DORL/LPL4/LA*
NRR/DSS/STSB/BC*
NAME MChawla (SLingam for)
PBlechman VCusumano DATE 8/1/2022 8/10/2022 8/15/2022 OFFICE NRR/DRA/APLB/BC*
OGC (NLO)*
NRR/DORL/LPL4/BC*
NAME JWhitman LShrum JDixon-Herrity DATE 8/11/2022 9/8/2022 10/12/2022 OFFICE NRR/DORL/LPL4/PM*
NAME MChawla (SLingam for)
DATE 10/21/2022
