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Category:Annual Report
MONTHYEARML22349A6282022-12-15015 December 2022 Enclosure 4 - 2021 Annual Report (Filed 2/23/2022, Includes 2021 Form 10-K) ML20353A3602020-12-17017 December 2020 Enclosure 4 - 2019 Annual Report (Filed 2/28/2019 Includes 2019 Form 10-K) ML20353A3692020-09-30030 September 2020 Enclosure 11 - 10-Q Filed Period 09/30/2020 ML20353A3682020-06-30030 June 2020 Enclosure 10 - 10-Q Filed Period 06/30/2020 ML20353A3672020-03-31031 March 2020 Enclosure 9 - 10-Q Filed Period 03/31/2020 ML20353A3722020-03-31031 March 2020 Enclosure 14 - Schedule 14C Information for Union Electric Company - March 2020 ML20353A3662020-02-28028 February 2020 Enclosure 8 - 10-K Filed 02/28/2020 ML17362A0592017-12-14014 December 2017 Enclosure 4: Ameren Corp - 2016 Annual Report (Filed 02/28/2017 Includes 2016 Form 10-K) ULNRC-06400, Enclosure 4: Ameren Corp - 2016 Annual Report (Filed 02/28/2017 Includes 2016 Form 10-K)2017-12-14014 December 2017 Enclosure 4: Ameren Corp - 2016 Annual Report (Filed 02/28/2017 Includes 2016 Form 10-K) ML17362A0692017-09-30030 September 2017 Enclosure 11: Ameren Corporation - 10-Q Filed Period 09/30/2017 ULNRC-06400, Enclosure 11: Ameren Corporation - 10-Q Filed Period 09/30/20172017-09-30030 September 2017 Enclosure 11: Ameren Corporation - 10-Q Filed Period 09/30/2017 ML17362A0682017-06-30030 June 2017 Enclosure 10: Ameren Corporation - 10-Q Filed Period 06/30/2017 ULNRC-06400, Enclosure 10: Ameren Corporation - 10-Q Filed Period 06/30/20172017-06-30030 June 2017 Enclosure 10: Ameren Corporation - 10-Q Filed Period 06/30/2017 ML17362A0662017-03-31031 March 2017 Enclosure 9: Ameren Corporation - 10-Q Filed Period 03/31/2017 ULNRC-06400, Enclosure 9: Ameren Corporation - 10-Q Filed Period 03/31/20172017-03-31031 March 2017 Enclosure 9: Ameren Corporation - 10-Q Filed Period 03/31/2017 ULNRC-06400, Enclosure 3: 2017 Proxy Statement of Ameren Corporation2017-03-15015 March 2017 Enclosure 3: 2017 Proxy Statement of Ameren Corporation ULNRC-06400, Enclosure 14: Schedule 14C Information for Union Electric Company - March 20172017-03-15015 March 2017 Enclosure 14: Schedule 14C Information for Union Electric Company - March 2017 ML17362A0582017-03-15015 March 2017 Enclosure 3: 2017 Proxy Statement of Ameren Corporation ML17362A0722017-03-15015 March 2017 Enclosure 14: Schedule 14C Information for Union Electric Company - March 2017 ML17362A0652017-02-28028 February 2017 Enclosure 8: Ameren Corporation - 10-K Filed Period 02/28/2017 ULNRC-06400, Enclosure 8: Ameren Corporation - 10-K Filed Period 02/28/20172017-02-28028 February 2017 Enclosure 8: Ameren Corporation - 10-K Filed Period 02/28/2017 ML16348A3782016-12-13013 December 2016 Enclosure 4 - 2015 Annual Report (Include 2014 Form 10-K) ULNRC-06341, Callaway Plant Unit 1 - Enclosure 4 - 2015 Annual Report (Include 2014 Form 10-K)2016-12-13013 December 2016 Callaway Plant Unit 1 - Enclosure 4 - 2015 Annual Report (Include 2014 Form 10-K) ML15363A3192015-12-22022 December 2015 Enclosure 4, 2015 Ameren 2014 Annual Report (Filed 03/02/2015 Includes 2014 Form 10-K) ULNRC-06272, Callaway, Unit 1 - Enclosure 4, 2015 Ameren 2014 Annual Report (Filed 03/02/2015 Includes 2014 Form 10-K)2015-12-22022 December 2015 Callaway, Unit 1 - Enclosure 4, 2015 Ameren 2014 Annual Report (Filed 03/02/2015 Includes 2014 Form 10-K) ULNRC-06203, 10 CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions2015-03-31031 March 2015 10 CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions ULNRC-06110, Annual Radioactive Effluent Release Report2014-04-0202 April 2014 Annual Radioactive Effluent Release Report ML13002A1942012-12-27027 December 2012 Ameren Corp 2011 Annual Report ULNRC-05944, Ameren Corp 2011 Annual Report2012-12-27027 December 2012 Ameren Corp 2011 Annual Report ULNRC-05944, Ameren Corp United States Securities and Exchange Commission Schedule 14A2012-12-27027 December 2012 Ameren Corp United States Securities and Exchange Commission Schedule 14A ML13002A1932012-12-27027 December 2012 Ameren Corp United States Securities and Exchange Commission Schedule 14A ULNRC-05944, Ameren Corp 10-Q Quarterly Report Pursuant to Sections 13 or 15(d).02012-11-0909 November 2012 Ameren Corp 10-Q Quarterly Report Pursuant to Sections 13 or 15(d).0 ML13002A1862012-11-0909 November 2012 Ameren Corp 10-Q Quarterly Report Pursuant to Sections 13 or 15(d).0 ML13002A1852012-08-0808 August 2012 Ameren Corp 10-Q Quarterly Report Pursuant to Sections 13 or 15(d) ULNRC-05944, Ameren Corp 10-Q Quarterly Report Pursuant to Sections 13 or 15(d)2012-05-10010 May 2012 Ameren Corp 10-Q Quarterly Report Pursuant to Sections 13 or 15(d) ML13002A1842012-05-10010 May 2012 Ameren Corp 10-Q Quarterly Report Pursuant to Sections 13 or 15(d) ML13002A1832012-02-28028 February 2012 Ameren Corp 10-K Annual Report Pursuant to Section 13 and 15 (D) Filed on 2/28/2012 Filed Period 11/23/2011 ULNRC-05944, Ameren Corp 10-K Annual Report Pursuant to Section 13 and 15 (D) Filed on 2/28/2012 Filed Period 11/23/20112012-02-28028 February 2012 Ameren Corp 10-K Annual Report Pursuant to Section 13 and 15 (D) Filed on 2/28/2012 Filed Period 11/23/2011 ML13331A5712011-11-25025 November 2011 Enclosure to ULNRC-06038 - 10 CFR 50.59 Summary Report for November 25, 2011 to May 28, 2013 ML0816504352008-07-21021 July 2008 Allegation Program Annual Trends Report Cy 2007 ULNRC-05378, CFR 50.46 Annual Report, ECCS Evaluation Model Revisions2007-03-0707 March 2007 CFR 50.46 Annual Report, ECCS Evaluation Model Revisions ULNRC-05268, Annual Financial Report2006-03-28028 March 2006 Annual Financial Report ULNRC-05141, Annual Environmental Operating Report2005-04-19019 April 2005 Annual Environmental Operating Report ULNRC-05136, Union Electric Company Annual Financial Report2005-03-21021 March 2005 Union Electric Company Annual Financial Report ML0414604542004-05-21021 May 2004 Annual Radioactive Effluent Release Report ML0414604242004-05-21021 May 2004 Annual Radioactive Effluent Release Report ULNRC-04991, 2003 Annual Radioactive Effluent Release Report2004-04-27027 April 2004 2003 Annual Radioactive Effluent Release Report ULNRC-04963, Annual Financial Report for 20022004-03-19019 March 2004 Annual Financial Report for 2002 ULNRC-04826, Union Electric Annual Financial Report2003-03-18018 March 2003 Union Electric Annual Financial Report ULNRC-04751, 10CFR50.46 Annual Report ECCS Evaluation Model Revisions2002-10-14014 October 2002 10CFR50.46 Annual Report ECCS Evaluation Model Revisions 2022-12-15
[Table view] Category:Letter type:ULNRC
MONTHYEARULNRC-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 ULNRC-06847, Supplement to Relief Request from Requirements of ASME BPV Code, Section XI, Subsection Iwl Regarding Examination and Testing of the Unbonded Post-Tensioning System (Relief Request C3R-01)2023-12-21021 December 2023 Supplement to Relief Request from Requirements of ASME BPV Code, Section XI, Subsection Iwl Regarding Examination and Testing of the Unbonded Post-Tensioning System (Relief Request C3R-01) ULNRC-06849, License Renewal Resolution for Commitments 34 and 35 Perform Evaluation of Crack Initiation and Propagation in Steam Generator Divider Plate and Tube-To-Tubesheet Welds2023-12-20020 December 2023 License Renewal Resolution for Commitments 34 and 35 Perform Evaluation of Crack Initiation and Propagation in Steam Generator Divider Plate and Tube-To-Tubesheet Welds ULNRC-06844, Request for Exemption from Specific Requirements in 2023 Security Rule, Enhanced Weapons, Firearms Background Checks, and Security Event Notification2023-12-0707 December 2023 Request for Exemption from Specific Requirements in 2023 Security Rule, Enhanced Weapons, Firearms Background Checks, and Security Event Notification ULNRC-06827, Supplement to License Amendment Request Regarding Support System Requirements for Residual Heat Removal and Control Room Air Conditioning Systems Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 (LDCN 22-0029)2023-11-20020 November 2023 Supplement to License Amendment Request Regarding Support System Requirements for Residual Heat Removal and Control Room Air Conditioning Systems Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 (LDCN 22-0029) ULNRC-06824, Response to Request for Additional Information Regarding Operating Quality Assurance Manual (Oqam) Revision 36A2023-08-17017 August 2023 Response to Request for Additional Information Regarding Operating Quality Assurance Manual (Oqam) Revision 36A ULNRC-06830, Transmittal of Updated Technical Specification Markup and Clean Pages for License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak2023-08-15015 August 2023 Transmittal of Updated Technical Specification Markup and Clean Pages for License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak ULNRC-06223, Minor Correction to License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Test Frequencies (LDCN 2020-0004)2023-07-25025 July 2023 Minor Correction to License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Test Frequencies (LDCN 2020-0004) ULNRC-06799, Submittal of Licensee Event Report 2022-003-01, Class 1E Electrical Air Conditioning System Thermal Expansion Valve Failure Resulted in Condition Prohibited by Technical Specifications2023-07-13013 July 2023 Submittal of Licensee Event Report 2022-003-01, Class 1E Electrical Air Conditioning System Thermal Expansion Valve Failure Resulted in Condition Prohibited by Technical Specifications ULNRC-06821, Post-Audit Follow-Up Information in Support of Callaway'S License Amendment Request and Proposed Exemption to Allow Use of Framatome Gaia Fuel (LDCN 22-0002) (EPID L-2022-LLA-0150 and EPID L-2022-LLE-00301)2023-06-21021 June 2023 Post-Audit Follow-Up Information in Support of Callaway'S License Amendment Request and Proposed Exemption to Allow Use of Framatome Gaia Fuel (LDCN 22-0002) (EPID L-2022-LLA-0150 and EPID L-2022-LLE-00301) ULNRC-06822, Additional Information Regarding Request for NRC Approval of Operating Quality Assurance Manual (Oqam) Revision 36a2023-06-14014 June 2023 Additional Information Regarding Request for NRC Approval of Operating Quality Assurance Manual (Oqam) Revision 36a ULNRC-06815, Request for NRC Approval of Operating Quality Assurance Manual, Revision 36a2023-06-0505 June 2023 Request for NRC Approval of Operating Quality Assurance Manual, Revision 36a ULNRC-06818, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate .2023-06-0505 June 2023 Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate . ULNRC-06816, Withdrawal of Previously Submitted Enclosures Regarding License Amendment Request for Adoption of Alternative Source Term and Revision of Technical Specifications (LDCN 21-0015)2023-05-0909 May 2023 Withdrawal of Previously Submitted Enclosures Regarding License Amendment Request for Adoption of Alternative Source Term and Revision of Technical Specifications (LDCN 21-0015) ULNRC-06812, Submittal of 2022 Annual Radiological Environmental Operating Report2023-04-27027 April 2023 Submittal of 2022 Annual Radiological Environmental Operating Report ULNRC-06806, Submittal of Radiological Emergency Response Plan, Revision 552023-04-12012 April 2023 Submittal of Radiological Emergency Response Plan, Revision 55 ULNRC-06807, Submittal of Single Positive Test Forms2023-04-0303 April 2023 Submittal of Single Positive Test Forms ULNRC-06798, Submittal of Status of Plant Decommissioning Funding and ISFSI Decommissioning Funding Plan2023-03-30030 March 2023 Submittal of Status of Plant Decommissioning Funding and ISFSI Decommissioning Funding Plan ULNRC-06801, CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions2023-03-30030 March 2023 CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions ULNRC-06804, Submittal of Nuclear Property Insurance Reporting2023-03-29029 March 2023 Submittal of Nuclear Property Insurance Reporting ULNRC-06751, Application to Revise Technical Specifications to Adopt TSTF-501-A, Rev. 1, Relocate Stored Oil & Lube Oil Volume Values to Licensee Control2023-03-29029 March 2023 Application to Revise Technical Specifications to Adopt TSTF-501-A, Rev. 1, Relocate Stored Oil & Lube Oil Volume Values to Licensee Control ULNRC-06803, Submittal of Response to Request for Additional Information Regarding Results of Steam Generator Tube In-Service Inspection2023-03-29029 March 2023 Submittal of Response to Request for Additional Information Regarding Results of Steam Generator Tube In-Service Inspection ULNRC-06805, Transmittal of Special Report 2023-02 Non-Functionality of Containment Hydrogen Analyzer Channel for Greater than 30 Days2023-03-21021 March 2023 Transmittal of Special Report 2023-02 Non-Functionality of Containment Hydrogen Analyzer Channel for Greater than 30 Days ULNRC-06802, Special Report 2023-01 (PAM Report); Non-Functionality of a Post-Accident Monitoring Instrument2023-03-0909 March 2023 Special Report 2023-01 (PAM Report); Non-Functionality of a Post-Accident Monitoring Instrument ULNRC-06795, Submittal of Fitness for Duty Reports for 2022, Including Single Positive Test Forms2023-01-24024 January 2023 Submittal of Fitness for Duty Reports for 2022, Including Single Positive Test Forms ULNRC-06794, Submittal of Fitness for Duty Program Data for 20222023-01-24024 January 2023 Submittal of Fitness for Duty Program Data for 2022 ULNRC-06787, Response to Request for Additional Information Regarding License Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015)2022-12-0808 December 2022 Response to Request for Additional Information Regarding License Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015) ULNRC-06781, License Amendment Request 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 (LDCN 22-0029)2022-12-0101 December 2022 License Amendment Request 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 (LDCN 22-0029) ULNRC-06780, Additional Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505, LDCN 20-0072022-11-30030 November 2022 Additional Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505, LDCN 20-007 ULNRC-06772, 10 CFR 50.59 and 10 CFR 72.48 Summary Report2022-11-23023 November 2022 10 CFR 50.59 and 10 CFR 72.48 Summary Report ULNRC-06777, Operating Quality Assurance Manual (Oqam) Revision 362022-11-16016 November 2022 Operating Quality Assurance Manual (Oqam) Revision 36 ULNRC-06779, ULNRC-06779: Contesting of Green NCV 05000483/2022010-03, Failure to Perform Required Inservice Testing of Residual Heat Removal Heat Exchanger Pneumatically (Air) Operated Outlet and Bypass Valves2022-11-14014 November 2022 ULNRC-06779: Contesting of Green NCV 05000483/2022010-03, Failure to Perform Required Inservice Testing of Residual Heat Removal Heat Exchanger Pneumatically (Air) Operated Outlet and Bypass Valves ULNRC-06765, License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Testing Frequencies (LDCN 2020-0004)2022-11-0303 November 2022 License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Testing Frequencies (LDCN 2020-0004) ULNRC-06773, Results of Steam Generator Tube In-Service Inspection2022-11-0101 November 2022 Results of Steam Generator Tube In-Service Inspection ULNRC-06775, Submittal of Non-Functionality of Loose-Part Detection System Channel for Greater than 30 Days2022-10-27027 October 2022 Submittal of Non-Functionality of Loose-Part Detection System Channel for Greater than 30 Days ULNRC-06771, Correction to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections (LDCN 21-0013)2022-10-25025 October 2022 Correction to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections (LDCN 21-0013) ULNRC-06770, Cycle 25 Commitment Change Summary Report2022-10-19019 October 2022 Cycle 25 Commitment Change Summary Report 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) ULNRC-06767, Presentation Information for Pre-Application Meeting Regarding New License Amendment Request for Use of Framatome Fuel Assemblies2022-09-0606 September 2022 Presentation Information for Pre-Application Meeting Regarding New License Amendment Request for Use of Framatome Fuel Assemblies ULNRC-06764, Revised Response to Request for Additional Information Regarding License Amendment Request for Adoption Off Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015)2022-09-0101 September 2022 Revised Response to Request for Additional Information Regarding License Amendment Request for Adoption Off Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015) ULNRC-06763, Supplement to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspection (LDCN 21-0013)2022-09-0101 September 2022 Supplement to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspection (LDCN 21-0013) ULNRC-06762, Submittal of Owner'S Activity Reports (OAR-1 Forms) for Cycle/Refuel 252022-08-25025 August 2022 Submittal of Owner'S Activity Reports (OAR-1 Forms) for Cycle/Refuel 25 ULNRC-06758, Union Electric Co. - Renewed Facility Operating License NPF-30, Withdrawal of License Amendment Request and Exemption Request Regarding Transition to Framatome Fuel (LDCN 22-0002)2022-08-0404 August 2022 Union Electric Co. - Renewed Facility Operating License NPF-30, Withdrawal of License Amendment Request and Exemption Request Regarding Transition to Framatome Fuel (LDCN 22-0002) ULNRC-06755, Response to Requests for Additional Information for Proposed Revision to Radiological Emergency Response Plan Regarding Response and Notification Goals2022-07-13013 July 2022 Response to Requests for Additional Information for Proposed Revision to Radiological Emergency Response Plan Regarding Response and Notification Goals ULNRC-06754, Response to Request for Additional Information Regarding Licensee Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications2022-07-0505 July 2022 Response to Request for Additional Information Regarding Licensee Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications ULNRC-06739, Post-Audit Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505 (LDCN 20-0007)2022-06-30030 June 2022 Post-Audit Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505 (LDCN 20-0007) ULNRC-06752, Evacuation Time Estimates Report2022-06-27027 June 2022 Evacuation Time Estimates Report ULNRC-06753, Presentation Information for Pre-Submittal Meeting Regarding Updated Spent Fuel Criticality Safety Analysis2022-06-23023 June 2022 Presentation Information for Pre-Submittal Meeting Regarding Updated Spent Fuel Criticality Safety Analysis ULNRC-06750, Submittal of Cycle 26 Core Operating Limits Report (COLR)2022-06-13013 June 2022 Submittal of Cycle 26 Core Operating Limits Report (COLR) 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). 2024-01-29
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Union Electric One Ameren Plaza 1901 Chouteau Avenue P0 Box 66149 St. Louis, MO 63166-6149 October 14, 2002 314 621.3222 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station PI-137 Washington, DC 20555-0001 ULNRC-04751 Ladies and Gentlemen:
DOCKET NUMBER 50-483 WAmerME UNION ELECTRIC COMPANY UF CALLAWAY PLANT 10CFR50.46 ANNUAL REPORT ECCS EVALUATION MODEL REVISIONS Attachment 1 to this letter describes changes to the Westinghouse ECCS Large Break and Small Break Loss of Coolant Accident (LOCA) Evaluation Models for Callaway during the time period from October 2001 to October 2002. Attachment 2 provides an ECCS Evaluation Model Margin Assessment which accounts for all peak cladding temperature (PCT) changes resulting from the resolution of prior issues as they apply to Callaway. There are no PCT changes since the last 10CFR50.46 report. References 1-16, listed on the next page, include prior 10CFR50.46 reports.
The PCT values determined in the Large Break and Small Break LOCA analyses of record, when combined with all PCT margin allocations, remain below the 2200°F regulatory limit. As such, no reanalysis is currently planned.
Should you have any questions regarding this letter, please contact us.
Very truly yours, f.L John D. Blosser Manager-Regulatory Affairs GGY/jdg Attachments bD asubsidiaryof Ameren Corporation
ULNRC-04751 October 14, 2002 Page 2
References:
- 1) ULNRC-2141 dated 1-19-90
- 2) ULNRC-2373 dated 2-28-91
- 3) ULNRC-2439 dated 7-19-91
- 4) ULNRC-2664 dated 7-16-92
- 5) ULNRC-2822 dated 7-15-93
- 6) ULNRC-2892 dated 10-22-93
- 7) ULNRC-3087 dated 10-19-94
- 8) ULNRC-3101 dated 11-23-94
- 9) ULNRC-3295 dated 11-22-95
- 10) ULNRC-3499 dated 11-27-96
- 11) ULNRC-3552 dated 3-21-97
- 12) ULNRC-3761 dated 3-6-98
- 13) ULNRC-3975 dated 3-5-99
- 14) ULNRC-4146 dated 11-4-99
- 15) ULNRC-4338 dated 11-2-00
- 16) ULNRC-4551 dated 11-2-01
ULNRC-04751 October 14, 2002 Page 3 cc: U. S. Nuclear Regulatory Commission (Original and I copy)
Attn: Document Control Desk Mail Station P 1-137 Washington, DC 20555-0001 Mr. Ellis W. Merschoff Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Jack N. Donohew (2 copies)
Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Station 7E1 Washington, DC 20555-2738 Manager, Electric Department Missouri Public Service Commission PO Box 360 Jefferson City, MO 65102
Attachment I ULNRC-04751 ATTACHMENT ONE CHANGES TO THE WESTINGHOUSE ECCS EVALUATION MODEL AND PCT PENALTY ASSESSMENTS Page 1 of 4
Attachment 1 ULNRC-04751 TABLE OF CONTENTS
- 1. REFILL Hot Wall Delay Model Generic Input Values
- 2. LOCBART Rod-Average Oxidation Error
- 3. Inclusion of Required NOTRUMP Version 38.0 Input Variables in SPADES
- 4. Use of NOTRUMP Subcooled Steam Table Routines in SPADES
- 5. Accumulator Line Friction Factor in the NOTRUMP Evaluation Model
- 6. Improved Code I/O and Diagnostics and General Code Maintenance Page 2 of 4
Attachment I ULNRC-04751
- 1. REFILL HOT WALL DELAY MODEL GENERIC INPUT VALUES Various discrepancies were identified in the generic input values that are used with the REFILL hot wall delay model, which is presently incorporated as a module in BASH.
This issue was resolved by replacing the use of generic values with expressions that were derived based on the IMP database and utilize appropriate plant-specific information.
These changes were determined to be a closely related group of Non-Discretionary Changes in accordance with Section 4.1.2 of WCAP-1 3451, "Westinghouse Methodology for Implementation of 10CFR50.46 Reporting," October 1992. In a typical PWR calculation, the hot wall delay period represents a very minor portion of the large break LOCA transient. Replacing the use of generic values with IMP-based expressions was determined to have a negligible effect on results and will be treated as a 0°F PCT effect for 10CFR50.46 reporting purposes.
- 2. LOCBART ROD-AVERAGE OXIDATION ERROR An error was discovered in LOCBART whereby the calculation of the rod-average oxidation incorrectly includes elevations below the bottom of the active fuel. As discussed below, it was determined that correcting this error would either have a negligible effect on, or would result in a reduction in, the rod-average oxidation, so LOCBART updates will be deferred to a future code release. When corrected, this error correction will represent a Non-Discretionary Change in accordance with Section 4.1.2 of WCAP-13451. For typical near-BOL calculations, correcting this error would have a negligible effect on the rod-average oxidation. For calculations beyond BOL, correcting this error would result in a reduction in the rod-average oxidation. In either case, existing analysis results remain conservative.
- 3. INCLUSION OF REQUIRED NOTRUMP VERSION 38.0 INPUT VARIABLES IN SPADES Following the release of NOTRUMP Version 38.0, which introduced several new input variables to the Evaluation Model, it became necessary to update the SPADES code to reflect these new input variables. These input variables are required to activate the revised model features incorporated into the NOTRUMP Version 38.0 code. This change was determined to be a Discretionary Change in accordance with Section 4.1.1 of WCAP-13451. This change simply introduces the new input parameters required by the release of NOTRUMP Version 38.0 to SPADES. The revised NOTRUMP model PCT effects have previously been assessed, and this change to SPADES does not introduce an additional PCT impact.
Page 3 of 4
Attachment 1 ULNRC-04751
- 4. USE OF NOTRUMP SUBCOOLED STEAM TABLE ROUTINES IN SPADES A review of SPADES calculation methodology determined that subcooled fluid node properties were being calculated based on steam tables that were inconsistent with those of NOTRUMP. As a result, slight differences in fluid node conditions could be seen between SPADES and NOTRUMP. The SPADES code has been modified to utilize the NOTRUMP subcooled steam table properties. This reduces perturbations incurred during the steady-state simulation period with NOTRUMP resulting from differences in subcooled steam table properties. This revision was determined to be a Discretionary Change in accordance with Section 4.1.1 of WCAP-13451. The nature of this change leads to an estimated PCT impact of 00 F.
- 5. ACCUMULATOR LINE FRICTION FACTOR IN THE NOTRUMP EVALUATION MODEL The current input for the NOTRUMP evaluation model uses a dimensionless value of 0.013 for line loss friction factor in the accumulator injection lines. This is based on fully developed, turbulent flow in the general pipe size range for accumulator injection lines applicable to Westinghouse designed NSSSs. However, in small break LOCA during accumulator injection, the flow seldom obtains velocities high enough to support the fully developed, turbulent flow value. Taking this into account yields a friction factor on the order of 0.016. This revision was determined to be a Discretionary Change in accordance with Section 4.1.1 of WCAP-13451. The nature of this change leads to an estimated PCT impact of 00 F.
- 6. IMPROVED CODE I/O AND DIAGNOSTICS AND GENERAL CODE MAINTENANCE Various changes in code input and output format have been made to enhance usability and help preclude errors in analyses. This includes both input changes (e.g., more relevant input variables defined and more common input values used as defaults) and input diagnostics designed to preclude unreasonable values from being used, as well as various changes to code output which have no effect on calculated results. In addition, various blocks of coding were rewritten to eliminate inactive coding, optimize the active coding, and improve commenting, both for enhanced usability and to facilitate code debugging when necessary. These changes were determined to be Discretionary Changes in accordance with Section 4.1.1 of WCAP-13451. The nature of these changes leads to an estimated PCT impact of 0°F.
Page 4 of 4
Attachment 2 ULNRC-04751 ATTACHMENT TWO ECCS EVALUATION MODEL MARGIN ASSESSMENT FOR CALLAWAY Page I of 6
Attachment 2 ULNRC-04751 LARGE BREAK LOCA A. ANALYSIS OF RECORD (AOR) PCT= 2014'F B. 1989 LOCA MODEL ASSESSMENTS + 10°F (refer to ULNRC-2141 dated 1-19-90)
C. 1990 LOCA MODEL ASSESSMENTS + 00 F (refer to ULNRC-2373 dated 2-28-9 1)
D. 1991 LOCA MODEL ASSESSMENTS + 10°F (refer to ULNRC-2439 dated 7-19-91)
E. 1992 LOCA MODEL ASSESSMENTS, MARGIN + 29 0 F ALLOCATIONS, AND SAFETY EVALUATIONS (refer to ULNRC-2664 dated 7-16-92 and ULNRC-2892 dated 10-22-93)
F. 1993 LOCA MODEL ASSESSMENTS - 650F (refer to ULNRC-2822 dated 7-15-93 and ULNRC-2892 dated 10-22-93)
G. 1994 LOCA MODEL ASSESSMENTS - 6cF (refer to ULNRC-3087 dated 10-19-94 and ULNRC-3101 dated 11-23-94)
H. 1995 LOCA MODEL ASSESSMENTS + 390 F (refer to ULNRC-3295 dated 11-22-95)
- 1. 1996 LOCA MODEL ASSESSMENTS + 0°F (refer to ULNRC-3499 dated 11-27-96)
J. 1997 LOCA MODEL ASSESSMENTS + 15°F (refer to ULNRC-3 552 dated 3-21-97)
K. 1998 LOCA MODEL ASSESSMENTS + 0°F (refer to ULNRC-3761 dated 3-6-98)
L. 1999 SAFETY EVALUATIONS + 300F 5 (refer to ULNRC-3 975 dated 3-5-99)
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Attachment 2 ULNRC-04751 LARGE BREAK LOCA (cont.)
M. 1999 LOCA MODEL ASSESSMENTS, MARGIN ALLOCATIONS, AND SAFETY EVALUATIONS I. LOCBART ZIRC-WATER OXIDATION ERROR +197 0 F (This PCT assessment is tracked separately since it will change depending on future margin allocations.)
- 2. NET CHANGE OF OTHER ALLOCATIONS -1390F1 (refer to ULNRC-4146 dated 11-4-99)
N. 2000 LOCA MODEL ASSESSMENTS AND MARGIN - 140 F ALLOCATIONS (refer to ULNRC-4338 dated 11-2-00)
- 0. 2001 LOCA MODEL ASSESSMENTS - 10°F (refer to ULNRC-4551 dated 11-2-01)
P. CURRENT LOCA MODEL ASSESSMENTS - + 0°F October 2002 LICENSING BASIS PCT + MARGIN ALLOCATIONS 21 100 F ABSOLUTE MAGNITUDE OF MARGIN ALLOCATIONS 250 F SINCE LAST LBLOCA 30-DAY REPORT (ULNRC-4146)
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.at Attachment 2 ULNRC-04751 SMALL BREAK LOCA A. ANALYSIS OF RECORD (AOR) PCT= 1528*F B. 1989 LOCA MODEL ASSESSMENTS +2290 F (refer to ULNRC -2141 dated 1-19-90)
C. 1990 LOCA MODEL ASSESSMENTS + 00 F (refer to ULNRC-2373 dated 2-28-91)
D. 1991 LOCA MODEL ASSESSMENTS "+ OOF (refer to ULNRC-2439 dated 7-19-9 1)
E. 1992 LOCA MODEL ASSESSMENTS AND SAFETY EVALUATIONS (refer to ULNRC-2664 dated 7-16-92) 2 F. 1993 LOCA MODEL ASSESSMENTS - 130F (refer to ULNRC-2892 dated 10-22-93)
G. 1993 SAFETY EVALUATIONS + 0-F 3 (refer to ULNRC-2822 dated 7-15-93)
H. BURST AND BLOCKAGE/TIME IN LIFE + 0F1 (This PCT assessment is tracked separately since it will change depending on future margin allocations.)
I. 1994 LOCA MODEL ASSESSMENTS -2820F 4 (refer to ULNRC-3087 dated 10-19-94 and ULNRC-3 101 dated 11-23-94)
J. 1995 LOCA MODEL ASSESSMENTS + 0°F (refer to ULNRC-3295 dated 11-22-95)
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Attachment Attachment 2 ULNRC-04751 SMALL BREAK LOCA (cont.)
K. 1996 LOCA MODEL ASSESSMENTS - + 300F 6 (refer to ULNRC-3499 dated 11-27-96)
L. 1997 LOCA MODEL ASSESSMENTS - + 0°F (refer to ULNRC-3552 dated 3-21-97)
M. 1998 LOCA MODEL ASSESSMENTS - + 0°F (refer to ULNRC-3761 dated 3-6-98)
N. 1999 SAFETY EVALUATIONS* +120°F 76 (refer to ULNRC-3975 dated 3-5-99) + 22-F
+ 401F5
- 0. 1999 LOCA MODEL ASSESSMENTS + 00 F (refer to ULNRC-4146 dated 11-4-99)
P. 2000 LOCA MODEL ASSESSMENTS - + 130F (refer to ULNRC-4338 dated 11-2-00)
Q. 2001 LOCA MODEL ASSESSMENTS - + 00 F (refer to ULNRC-4551 dated 11-2-01)
R. CURRENT LOCA MODEL ASSESSMENTS - + 00 F October 2002 LICENSING BASIS PCT + MARGIN ALLOCATIONS 1687 0 F ABSOLUTE MAGNITUDE OF MARGIN ALLOCATIONS 43 0 F*
SINCE LAST SBLOCA 30-DAY REPORT (ULNRC-3 101)
Per Section 3.5 of WCAP-13451, intentional changes to plant input parameters evaluated per IOCFR50.59 (such as the March 1999 safety evaluations) are not tracked against the IOCFR50.46 reporting requirements related to a significant change (i.e., > 500F).
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Attachment 2 ULNRC-04751 NOTES:
- 1. See Attachment I to ULNRC-3 101. The 1991 assessments have been eliminated as a result of the new SBLOCTA calculation. The Small Break Burst and Blockage penalty is a function of the base PCT plus margin allocations and has been reduced to 0°F since the total PCT has been reduced to a value below that at which burst would occur.
- 2. Addendum 2 to WCAP-10054 has been submitted to NRC. It references the improved condensation model (COSI) described in WCAP- 11767 and provides justification for application of this model to small break LOCA calculations. Union Electric tracks the Peak Cladding Temperature (PCT) change reported in ULNRC-2892 (+150°F/-150°F) as a permanent change to Callaway's calculated PCT. See WCAP-1 0054, Addendum 2, "Addendum to the Westinghouse Small Break ECCS Evaluation Model Using the NOTRUMP Code: Safety Injection into the Broken Loop and COSI Condensation Model," August 1994.
- 3. +4.0°F Cycle 6 crud deposition penalty has been deleted. A PCT penalty of 0°F has been assessed for 4 mils of crud, provided BOL conditions remain limiting. In the event that the SBLOCA cumulative PCT becomes >!1700°F, this issue must be reassessed.
- 4. Based on the limiting case clad heatup reanalysis with axial offset reduced from 30% to 20%, as discussed in ULNRC-3 101.
- 5. Based on a safety evaluation for a 5°F reduction in full-power Tavg (from 588.4°F to 583.4°F), a +30'F PCT penalty is established for LBLOCA and a +401F PCT penalty is established for SBLOCA.
- 6. The 1996 safety evaluation reported a +10°F PCT penalty for a feedwater temperature reduction from 4460F to 41 0°F. This is replaced by a new safety evaluation. The 1996 assessment is reduced from +40'F to +30'F and a new +22°F PCT penalty is established for SBLOCA associated with a feedwater temperature reduction from 446°F to 390'F.
- 7. See Amendment No. 128 dated October 2, 1998.
- 8. Included in this value is an estimated PCT benefit of I00°F associated with reducing the FQ limit from the AOR value of 2.5 to a value of 2.45 for core average burnups between 0 and 8000 MWd/MTU. After a bumup of 8000 MWd/MTU, the FQ limit returns to 2.5 with no PCT penalty. This applies for the current operating cycle as well as the next operating cycle.
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