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| {{#Wiki_filter:Callaway Plant | | {{#Wiki_filter:Callaway Plant |
| .t August 23, 2021 ULNRC-06683 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 10 CFR 50.90 Ladies and Gentlemen: | | |
| DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO. | | .t |
| RENEWED FACILITY OPERATING LICENSE NPF-30 TRANSMITTAL OF DOCUMENTS IDENTIFIED FROM NRC AUDIT OF LICENSE AMENDMENT REQUEST REGARDING RISK-INFORMED APPROACH TO CLOSURE OF GENERIC SAFETY ISSUE 191 (EPID L-2021-LLA-0059) | | |
| | August 23, 2021 |
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| | ULNRC-06683 |
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| | U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555- 0001 |
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| | 10 CFR 50.90 |
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| | Ladies and Gentlemen: |
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| | DOCKET NUMBER 50 -483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO. |
| | RENEWED FACILITY OPERATING LICENSE NPF-30 TRANSMITTAL OF DOCUMENTS IDENTIFIED FROM NRC AUDIT OF LICENSE AMENDMENT REQUEST REGARDING RISK-INFORMED APPROACH TO CLOSURE OF GENERIC SAFETY ISSUE 191 (EPID L -2021-LLA-0059) |
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| ==References:== | | ==References:== |
| : 1. Ameren Missouri letter ULNRC-06526, "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)," dated March 31, 2021 (ADAMS Accession No. ML21090A185) | | : 1. Ameren Missouri letter ULNRC-06526, " Request for License Amendment and Regulatory Exemptions for a Risk -Informed Approach to Address GSI-191and R espond to GL 2004- 02 (LDCN 19- 0014)," dated March31, 2021 (ADAMS Accession No. ML21090A185) |
| : 2. Ameren Missouri letter ULNRC-06651, "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)," dated July 22, 2021 (ADAMS Accession No. ML21203A193) | | : 2. Ameren Missouri letter ULNRC-06651, " 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)," dated J ul y 22, 2021( ADAMS Accession No. ML21203A193) |
| : 3. NRC letter from Mr. M. L. Chawla to Mr. F. M. Diya, "Callaway Plant, Unit No. 1 - Audit Plan and Setup of Online Reference Portal for License Amendment Request Regarding Risk-Informed Approach for Closure of Generic Safety Issue-191 (EPID L-2021-LLA-0059)," dated July 23, 2021 (ADAMS Accession No. ML21197A063) | | : 3. NRC letter from Mr. M. L. Chawla to Mr. F. M. Diya, " Callaway Plant, Unit No. 1 -Audit Plan and Setup of Online Reference Portal f or License Amendment Request Regarding Risk -Informed Approach for Closure of Generic Safet y Issue-191 (EPID L-2021-LLA-0059)," dated July 23, 2021 (ADAMS Accession No. ML21197A063) |
| In the letter identified as Reference 3, the Nuclear Regulatory Commission staff transmitted its plan for audit of the Union Electric Company (Ameren Missouri) combined request for regulatory exemptions and license amendment that was proposed for addressing GSI-191 and responding to Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors," for the Callaway plant. The combined | | |
| .t 8315 County Road 459 : Steedman, MO 65077 : AmerenMissouri.com | | In the letter identified as Reference 3, the Nuclear Regulatory Commission staff transmitted its plan for audit of the Union Electric Company (Ameren Missouri) combined request for regulatory exemptions and license amendment that was proposed for addressing GSI -191 and responding to Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors," for the Callaway pl ant. The combined |
| .t | | |
| .t | | .t 8315 County Road 459 : Steedman, MO 65077: AmerenMissouri.com.t |
| | .t ULNRC-06683 August 23, 2021 Page 2of 4 request was submitted in the letter identified as Reference 1, and has been supplemented by the letter identified as Reference 2. |
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| | During the conduct of the audit, the audit team identified certain information as being necessar y for anal ysis of the combined request. This information consists of inputs to, and calculational output results of, the CASA Grande software that is used to implement the risk -informed "RoverD" method for addressing concerns about accident -generated debris in the Callaway Plant containment and its potential effects on sump performance and core cooling as described in References 1 and 2. |
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| | The requested information is hereby provided in the enclosures to this letter. Enclosure 1 contains break frequencies from NUREG-1829, loss-of-coolant accident (LOCA) data, and the Callaway Plant non-isolable weld break locations that are input to CASA Grande. Enclosure 2 contain s the CASA Grande debris generation and transport output data for the crit ical weld break locations. Enclosure 3 contains the debris generation and transport output data for breaks at each of the non-isolable weld locations that was obtained using CASA Grande at a reduced resolution for break orientation and break sizeincrements. The Enclosure 3 data is provided in order to allow the NRC staff to validate the process that was used to identify the critical weld break locations. |
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| ULNRC-06683 August 23, 2021 Page 2 of 4 request was submitted in the letter identified as Reference 1, and has been supplemented by the letter identified as Reference 2.
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| During the conduct of the audit, the audit team identified certain information as being necessary for analysis of the combined request. This information consists of inputs to, and calculational output results of, the CASA Grande software that is used to implement the risk-informed "RoverD" method for addressing concerns about accident-generated debris in the Callaway Plant containment and its potential effects on sump performance and core cooling as described in References 1 and 2.
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| The requested information is hereby provided in the enclosures to this letter. Enclosure 1 contains break frequencies from NUREG-1829, loss-of-coolant accident (LOCA) data, and the Callaway Plant non-isolable weld break locations that are input to CASA Grande. Enclosure 2 contains the CASA Grande debris generation and transport output data for the critical weld break locations. Enclosure 3 contains the debris generation and transport output data for breaks at each of the non-isolable weld locations that was obtained using CASA Grande at a reduced resolution for break orientation and break size increments. The Enclosure 3 data is provided in order to allow the NRC staff to validate the process that was used to identify the critical weld break locations.
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| This letter does not contain new commitments. | | This letter does not contain new commitments. |
| If there are any questions, please contact Mr. Tom Elwood at 314-225-1905. | | |
| I declare under penalty of perjury that the foregoing is true and correct. | | If there are an y questions, please contact Mr. Tom Elwood at 314-225-1905. |
| Sincerely, Steve J. Meyer Manager, Regulatory Affairs 08/23/2021 Executed on: ___________________
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| | I declare under penalt y of perjury that the foregoing is true and correct. |
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| | Sincerel y, |
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| | Steve J. Meyer Manager, Regulatory Affairs |
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| | Executed on: ___________________ |
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| ==Enclosures:== | | ==Enclosures:== |
| Enclosure 1 - Callaway Baseline Weld Input Enclosure 2 - CAL RoverD Results Baseline (Critical Breaks) | | Enclosure 1 - Calla way Baseline Weld Input |
| Enclosure 3 - CAL RoverD Results Baseline (Non-Isolable Breaks)
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| ULNRC-06683 August 23, 2021 Page 3 of 4 cc: Mr. Scott A. Morris Regional Administrator U. S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. M. Chawla Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 08B1A Washington, DC 20555-0001 | | Enclosure 2 - CAL RoverD Results Baseline (Critical Breaks) |
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| | Enclosure 3 - CAL RoverD Results Baseline (Non -Isolable Breaks) |
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| | ULNRC-06683 August 23, 2021 Page 3of 4 cc: Mr. Scott A. Morris Regional Administrator U. S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 |
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| | Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 |
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| | Mr. M. Chawla Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 08B1A Washington, DC 20555- 0001 |
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| | ULNRC-06683 August 23, 2021 Page 4of 4 Index and send hardcopy to QA File A160.0761 |
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| | Hardcopy: |
| | Certrec Corporation 6500 West Freeway, Suite 400 Fort Worth, TX 76116 (Certrec receives ALL attachments as long as they are non -safeguards and may be publicly disclosed.) |
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| ULNRC-06683 August 23, 2021 Page 4 of 4 Index and send hardcopy to QA File A160.0761 Hardcopy:
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| Certrec Corporation 6500 West Freeway, Suite 400 Fort Worth, TX 76116 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
| |
| Electronic distribution for the following can be made via Responses and Reports ULNRC Distribution: | | Electronic distribution for the following can be made via Responses and Reports ULNRC Distribution: |
| F. M. Diya B. L. Cox F. J. Bianco S. P. Banker B. L. Jungmann E. C. Olson S. M. Lange S. J. Meyer R. C. Wink T. B. Elwood R. J. Andreasen NSRB Secretary STARS Regulatory Affairs Mr. Jay Silberg (Pillsbury Winthrop Shaw Pittman LLP) | | |
| | F. M. Di ya B. L. Cox F. J. Bianco S. P. Banker B. L. Jungmann E. C. Olson S. M. Lange S. J. Meyer R. C. Wink T. B. Elwood R. J. Andreasen NSRB Secretar y STARS Regulator y Affairs Mr. Jay Silberg ( Pillsbury Winthrop Shaw Pittman LLP) |
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| .}} | | .}} |
Letter Sequence Other |
|---|
|
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance, Acceptance, Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement
|
MONTHYEARML21090A1852021-03-31031 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
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
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
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
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
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
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
ML22251A3432022-09-0808 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
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
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
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
2021-09-14
[Table View] |
|
|---|
Category:Letter
MONTHYEARIR 05000483/20240032024-10-23023 October 2024
Integrated Inspection Report 05000483/2024003
IR 05000483/20240132024-10-21021 October 2024
Design Basis Assurance Inspection (Programs) Inspection Report 05000483/2024013
IR 05000483/20244012024-10-0909 October 2024
Material Control and Accounting Program Inspection Report 05000483/2024401 Public
ULNRC-06901, Concurrent Inoperability of Control Room Air Conditioning System Train and Opposite Train Emergency Diesel Generator Results in Condition Prohibited by Technical Specifications Limiting (Letter)2024-10-0101 October 2024
Concurrent Inoperability of Control Room Air Conditioning System Train and Opposite Train Emergency Diesel Generator Results in Condition Prohibited by Technical Specifications Limiting (Letter)
ML24247A3042024-09-11011 September 2024
Regulatory Audit Questions for License Renewal Commitments 34 and 35 (EPID L-2024-LRO-0009) - Non-Proprietary
IR 05000483/20244032024-08-28028 August 2024
Security Baseline Inspection 05000483-2024-403
IR 05000483/20240052024-08-14014 August 2024
Updated Inspection Plan for Callaway Plant (Report 05000483/2024005)
IR 05000483/20253012024-08-0505 August 2024
Notification of NRC Initial Operator Licensing Examination 05000483/2025301
ML24212A2822024-08-0202 August 2024
Regulatory Audit Summary Concerning Review of Request No. C3R-01 for Proposed Alternative to ASME Code, Section XI Requirements for Containment Building Inspections
IR 05000483/20240022024-07-18018 July 2024
And Independent Spent Fuel Storage Installation Integrated Inspection Report 05000483/2024002 and 07201045/2024001
ML24185A1032024-07-16016 July 2024
2024 Biennial Problem Identification and Resolution Inspection Report
ULNRC-06892, Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC00062024-06-26026 June 2024
Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC0006
ULNRC-06891, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00052024-06-26026 June 2024
Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0005
ULNRC-06884, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00022024-06-12012 June 2024
Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0002
ULNRC-06886, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00042024-06-12012 June 2024
Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0004
ULNRC-06885, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00032024-06-12012 June 2024
Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0003
ML24144A0492024-06-11011 June 2024
Requests for Relief from ASME OM Code Pump and Valve Testing Requirements for Fifth 120-Month Inservice Testing Interval
ML24158A5222024-06-0606 June 2024
Application to Revise Technical Specifications to Adopt Tstf-569, Rev. 2, Revise Response Time Testing Definition (LDCN 24-0008)
ML24178A1132024-06-0606 June 2024
Ameren Missouris Intent to Adopt Revision 1 to Amendment 0 of Certificate of Compliance No. 1040 as Applicable to the ISFSI at the Callaway Plant Site
ML24143A1632024-05-23023 May 2024
Independent Spent Fuel Storage Installation Registration of Dry Spent Storage Canister HGMPC0001
ULNRC-06882, Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC00122024-05-16016 May 2024
Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC0012
ML24137A2342024-05-16016 May 2024
Independent Spent Fuel Storage Installation - Registration of Dry Spent Fuel Storage Canister HGMPC0011
ML24122A1502024-05-0707 May 2024
Audit Plan to Support Review of Steam Generator License Renewal Response to Commitment Nos 34 and 35
ULNRC-06877, Final Safety Analysis Report Revision OL-27 and Technical Specification Bases Revision 252024-05-0606 May 2024
Final Safety Analysis Report Revision OL-27 and Technical Specification Bases Revision 25
IR 05000483/20244022024-05-0606 May 2024
Security Baseline Inspection Report 05000483/2024402 (Full Report)
IR 05000483/20240112024-05-0101 May 2024
NRC Post-Approval Site Inspection for License Renewal (Phase 2) Report 05000483/2024011
ULNRC-06856, CFR 50.59 and 10 CFR 72.48 Summary Report2024-05-0101 May 2024
CFR 50.59 and 10 CFR 72.48 Summary Report
ULNRC-06869, Submittal of Callaway, Unit 1, 2023 Annual Radiological Environmental Operating Report2024-04-30030 April 2024
Submittal of Callaway, Unit 1, 2023 Annual Radiological Environmental Operating Report
ML24122A1132024-04-30030 April 2024
Submittal of Callaway, Unit 1, 2023 Annual Radioactive Effluent Release Report
ULNRC-06876, Registration of Dry Spent Fuel Storage Canister HGMPC00102024-04-25025 April 2024
Registration of Dry Spent Fuel Storage Canister HGMPC0010
ML24108A1082024-04-17017 April 2024
Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC0009
ULNRC-06871, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00072024-04-17017 April 2024
Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0007
ULNRC-06872, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00082024-04-17017 April 2024
Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0008
ULNRC-06866, Submittal of Cycle 26 Commitment Change Summary Report2024-04-17017 April 2024
Submittal of Cycle 26 Commitment Change Summary Report
IR 05000483/20240012024-04-16016 April 2024
Integrated Inspection Report 05000483/2024001
IR 05000483/20244042024-04-0909 April 2024
Cyber Security Inspection Report 05000483/2024404
ML24088A3212024-04-0101 April 2024
Notification of Commercial Grade Dedication Inspection (05000483/2024013) and Request for Information
ML24086A5132024-03-26026 March 2024
CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions
ULNRC-06863, Submittal of Annual Exposure Report for 20232024-03-20020 March 2024
Submittal of Annual Exposure Report for 2023
ML24079A1622024-03-19019 March 2024
Re Nuclear Property Insurance Reporting
ML24066A1932024-03-0707 March 2024
2024 Callaway Plant Notification of Biennial Problem Identification and Resolution Inspection and Request for Information
ULNRC-06852, Owners Activity Reports (OAR-1 Forms) for Cycle/Refuel 262024-03-0505 March 2024
Owners Activity Reports (OAR-1 Forms) for Cycle/Refuel 26
IR 05000483/20230062024-02-28028 February 2024
Annual Assessment Letter for Callaway Plant Report 05000483/2023006
ML24052A3662024-02-26026 February 2024
Regulatory Audit Plan in Support of Proposed Alternative to ASME Code, Section XI Requirements for Containment Building Inspections
ULNRC-06858, Completion of License Renewal Activities Prior to Entering the Period of Extended Operation2024-02-21021 February 2024
Completion of License Renewal Activities Prior to Entering the Period of Extended Operation
ML24036A1712024-02-20020 February 2024
Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0079 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting))
ULNRC-06853, Submittal of 2023 Fitness for Duty Performance Data Per Per 10 CFR 26.7172024-01-29029 January 2024
Submittal of 2023 Fitness for Duty Performance Data Per Per 10 CFR 26.717
ML24008A0552024-01-19019 January 2024
Acceptance of Requested Licensing Action - Proposed Alternative to the Requirements of the ASME Code (EPID L-2023-LLR- 0061)
IR 05000483/20230042024-01-19019 January 2024
– Integrated Inspection Report 05000483/2023004
ML23353A1712024-01-18018 January 2024
Issuance of Amendment No. 237 to Clarify Support System Requirements for the Residual Heat Removal System and Control Room Air Conditioning System Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6
2024-09-11
[Table view] |
Text
Callaway Plant
.t
August 23, 2021
ULNRC-06683
U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555- 0001
10 CFR 50.90
Ladies and Gentlemen:
DOCKET NUMBER 50 -483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.
RENEWED FACILITY OPERATING LICENSE NPF-30 TRANSMITTAL OF DOCUMENTS IDENTIFIED FROM NRC AUDIT OF LICENSE AMENDMENT REQUEST REGARDING RISK-INFORMED APPROACH TO CLOSURE OF GENERIC SAFETY ISSUE 191 (EPID L -2021-LLA-0059)
References:
- 1. Ameren Missouri letter ULNRC-06526, " Request for License Amendment and Regulatory Exemptions for a Risk -Informed Approach to Address GSI-191and R espond to GL 2004- 02 (LDCN 19- 0014)," dated March31, 2021 (ADAMS Accession No. ML21090A185)
- 2. Ameren Missouri letter ULNRC-06651, " 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)," dated J ul y 22, 2021( ADAMS Accession No. ML21203A193)
- 3. NRC letter from Mr. M. L. Chawla to Mr. F. M. Diya, " Callaway Plant, Unit No. 1 -Audit Plan and Setup of Online Reference Portal f or License Amendment Request Regarding Risk -Informed Approach for Closure of Generic Safet y Issue-191 (EPID L-2021-LLA-0059)," dated July 23, 2021 (ADAMS Accession No. ML21197A063)
In the letter identified as Reference 3, the Nuclear Regulatory Commission staff transmitted its plan for audit of the Union Electric Company (Ameren Missouri) combined request for regulatory exemptions and license amendment that was proposed for addressing GSI -191 and responding to Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors," for the Callaway pl ant. The combined
.t 8315 County Road 459 : Steedman, MO 65077: AmerenMissouri.com.t
.t ULNRC-06683 August 23, 2021 Page 2of 4 request was submitted in the letter identified as Reference 1, and has been supplemented by the letter identified as Reference 2.
During the conduct of the audit, the audit team identified certain information as being necessar y for anal ysis of the combined request. This information consists of inputs to, and calculational output results of, the CASA Grande software that is used to implement the risk -informed "RoverD" method for addressing concerns about accident -generated debris in the Callaway Plant containment and its potential effects on sump performance and core cooling as described in References 1 and 2.
The requested information is hereby provided in the enclosures to this letter. Enclosure 1 contains break frequencies from NUREG-1829, loss-of-coolant accident (LOCA) data, and the Callaway Plant non-isolable weld break locations that are input to CASA Grande. Enclosure 2 contain s the CASA Grande debris generation and transport output data for the crit ical weld break locations. Enclosure 3 contains the debris generation and transport output data for breaks at each of the non-isolable weld locations that was obtained using CASA Grande at a reduced resolution for break orientation and break sizeincrements. The Enclosure 3 data is provided in order to allow the NRC staff to validate the process that was used to identify the critical weld break locations.
This letter does not contain new commitments.
If there are an y questions, please contact Mr. Tom Elwood at 314-225-1905.
I declare under penalt y of perjury that the foregoing is true and correct.
Sincerel y,
Steve J. Meyer Manager, Regulatory Affairs
Executed on: ___________________
Enclosures:
Enclosure 1 - Calla way Baseline Weld Input
Enclosure 2 - CAL RoverD Results Baseline (Critical Breaks)
Enclosure 3 - CAL RoverD Results Baseline (Non -Isolable Breaks)
ULNRC-06683 August 23, 2021 Page 3of 4 cc: Mr. Scott A. Morris Regional Administrator U. S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511
Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077
Mr. M. Chawla Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 08B1A Washington, DC 20555- 0001
ULNRC-06683 August 23, 2021 Page 4of 4 Index and send hardcopy to QA File A160.0761
Hardcopy:
Certrec Corporation 6500 West Freeway, Suite 400 Fort Worth, TX 76116 (Certrec receives ALL attachments as long as they are non -safeguards and may be publicly disclosed.)
Electronic distribution for the following can be made via Responses and Reports ULNRC Distribution:
F. M. Di ya B. L. Cox F. J. Bianco S. P. Banker B. L. Jungmann E. C. Olson S. M. Lange S. J. Meyer R. C. Wink T. B. Elwood R. J. Andreasen NSRB Secretar y STARS Regulator y Affairs Mr. Jay Silberg ( Pillsbury Winthrop Shaw Pittman LLP)
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