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TAC:MF4682, Technical Specifications End States, NEDC-32988-A (Approved, Closed) |
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Category:Letter type:GO
MONTHYEARGO2-24-004, License Amendment Request to Revise Emergency Plan2024-01-30030 January 2024 License Amendment Request to Revise Emergency Plan GO2-24-003, Relief Requests for the Columbia Generating Station Fifth Ten-Year Interval Inservice Testing2024-01-29029 January 2024 Relief Requests for the Columbia Generating Station Fifth Ten-Year Interval Inservice Testing GO2-24-005, Docket No. 50-397 Supplement to Reply to a Notice of Violation; EA-21-1702024-01-0808 January 2024 Docket No. 50-397 Supplement to Reply to a Notice of Violation; EA-21-170 GO2-23-136, Guarantee of Payment of Deferred Premium2023-12-20020 December 2023 Guarantee of Payment of Deferred Premium GO2-23-135, Notice of Readiness for Supplemental Inspection2023-12-14014 December 2023 Notice of Readiness for Supplemental Inspection GO2-23-130, Reply to a Notice of Violation; EA-23-0542023-12-14014 December 2023 Reply to a Notice of Violation; EA-23-054 GO2-23-105, Licensing Basis Document Update and Biennial Commitment Change Report2023-12-12012 December 2023 Licensing Basis Document Update and Biennial Commitment Change Report GO2-23-107, Application to Revise Technical Specifications to Adopt TSTS-584, Eliminate Automatic RWCU System Isolation on SLC Initiation2023-12-0505 December 2023 Application to Revise Technical Specifications to Adopt TSTS-584, Eliminate Automatic RWCU System Isolation on SLC Initiation GO2-23-126, Docket No. 50-397 Voluntary Response to Regulatory Issue Summary 2023-012023-11-28028 November 2023 Docket No. 50-397 Voluntary Response to Regulatory Issue Summary 2023-01 GO2-23-121, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-11-27027 November 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation GO2-23-097, In-Service Inspection Summary Report for the Twenty-Sixth Refueling Outage (R26)2023-09-0606 September 2023 In-Service Inspection Summary Report for the Twenty-Sixth Refueling Outage (R26) GO2-23-100, Technical Specification Section 5.6.4 Post Accident Monitoring Instrumentation 14-Day Report for Inoperable Suppression Pool Level Indication2023-08-31031 August 2023 Technical Specification Section 5.6.4 Post Accident Monitoring Instrumentation 14-Day Report for Inoperable Suppression Pool Level Indication GO2-23-056, Application to Revise Technical Specifications to Adopt TSTF-230, Add New Condition B to LCO 3.6.2.3, RHR Suppression Pool Cooling2023-08-29029 August 2023 Application to Revise Technical Specifications to Adopt TSTF-230, Add New Condition B to LCO 3.6.2.3, RHR Suppression Pool Cooling GO2-23-093, Supplement to Reply to a Notice of Violation: EA-21-1702023-07-27027 July 2023 Supplement to Reply to a Notice of Violation: EA-21-170 GO2-23-068, Notification of Completion of Commitments Required Prior to Entry Into the Period of Extended Operation2023-07-19019 July 2023 Notification of Completion of Commitments Required Prior to Entry Into the Period of Extended Operation GO2-23-090, Reply to a Notice of Violation2023-07-12012 July 2023 Reply to a Notice of Violation GO2-23-073, Notification of NPDES Permit Issuance2023-06-26026 June 2023 Notification of NPDES Permit Issuance GO2-23-072, Cycle 27 Core Operating Limits Report2023-06-0505 June 2023 Cycle 27 Core Operating Limits Report GO2-23-055, Independent Spent Fuel Storage Installation, 2022 Annual Radiological Environmental Operating Report2023-05-15015 May 2023 Independent Spent Fuel Storage Installation, 2022 Annual Radiological Environmental Operating Report GO2-23-006, License Amendment Request to Clean-Up Operating License and Appendix a Technical Specifications2023-05-0101 May 2023 License Amendment Request to Clean-Up Operating License and Appendix a Technical Specifications GO2-23-053, 2022 Annual Environmental Operating Report2023-04-26026 April 2023 2022 Annual Environmental Operating Report GO2-23-057, 2022 Annual Radioactive Effluent Release Report2023-04-25025 April 2023 2022 Annual Radioactive Effluent Release Report GO2-23-012, Application to Revise Technical Specifications to Adopt Tstf-541, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position2023-03-27027 March 2023 Application to Revise Technical Specifications to Adopt Tstf-541, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position GO2-23-041, Generation Station - Level of Financial Protection - Annual Reporting Requirement2023-03-15015 March 2023 Generation Station - Level of Financial Protection - Annual Reporting Requirement GO2-23-038, Plant Decommissioning Fund Status Report2023-03-15015 March 2023 Plant Decommissioning Fund Status Report GO2-23-034, Report of Changes or Errors in Emergency Core Cooling System Loss of Coolant Accident Analysis Models Pursuant to 10 CFR 50.462023-03-13013 March 2023 Report of Changes or Errors in Emergency Core Cooling System Loss of Coolant Accident Analysis Models Pursuant to 10 CFR 50.46 GO2-23-035, Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling2023-03-0909 March 2023 Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling GO2-23-019, Emergency Plan - Summary of Changes and Analysis for Revision 68 of the EP-012023-02-0808 February 2023 Emergency Plan - Summary of Changes and Analysis for Revision 68 of the EP-01 GO2-22-131, Guarantee of Payment of Deferred Premium2022-12-19019 December 2022 Guarantee of Payment of Deferred Premium GO2-22-122, Response to Request for Additional Information Related to License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2022-11-28028 November 2022 Response to Request for Additional Information Related to License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b GO2-22-076, Status of License Renewal Commitments2022-10-31031 October 2022 Status of License Renewal Commitments GO2-22-110, Supplement to License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactor2022-10-17017 October 2022 Supplement to License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactor GO2-22-096, Supplement to License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2022-10-0404 October 2022 Supplement to License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b GO2-22-085, Docket No. 50-397, Evacuation Time Estimate Analysis2022-08-30030 August 2022 Docket No. 50-397, Evacuation Time Estimate Analysis GO2-22-075, Response to Request for Additional Information Related to Revised Pressure-Temperature Limit Curves2022-07-11011 July 2022 Response to Request for Additional Information Related to Revised Pressure-Temperature Limit Curves GO2-22-072, Summary of Changes and Analysis for Revision 57 of PPM 13.14.4 - Emergency Equipment Maintenance and Testing2022-07-11011 July 2022 Summary of Changes and Analysis for Revision 57 of PPM 13.14.4 - Emergency Equipment Maintenance and Testing GO2-22-042, Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Colling Using the Consolidated Line Item Improvement Process2022-05-25025 May 2022 Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Colling Using the Consolidated Line Item Improvement Process GO2-22-062, Registration of Spent Fuel Cask Use2022-05-19019 May 2022 Registration of Spent Fuel Cask Use GO2-22-049, Supplement to Licensing Amendment Request to Adopt 10CFR50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Rectors2022-05-10010 May 2022 Supplement to Licensing Amendment Request to Adopt 10CFR50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Rectors GO2-22-054, Independent Spent Fuel Storage Installation, 2021 Annual Radiological Environmental Operating Report2022-05-0909 May 2022 Independent Spent Fuel Storage Installation, 2021 Annual Radiological Environmental Operating Report GO2-22-056, Registration of Spent Fuel Cask Use2022-04-21021 April 2022 Registration of Spent Fuel Cask Use GO2-22-055, 2021 Annual Environmental Operating Report2022-04-20020 April 2022 2021 Annual Environmental Operating Report GO2-22-048, 2021 Annual Radioactive Effluent Release Report2022-04-15015 April 2022 2021 Annual Radioactive Effluent Release Report GO2-22-045, Registration of Spent Fuel Cask Use2022-04-0606 April 2022 Registration of Spent Fuel Cask Use GO2-22-044, Level of Financial Protection - Annual Reporting Requirement2022-03-21021 March 2022 Level of Financial Protection - Annual Reporting Requirement GO2-22-038, Docket No. 50-397, Report of Changes or Errors in Emergency Core Cooling System Loss of Coolant Accident Analysis Models Pursuant to 10 CFR 50.462022-03-0909 March 2022 Docket No. 50-397, Report of Changes or Errors in Emergency Core Cooling System Loss of Coolant Accident Analysis Models Pursuant to 10 CFR 50.46 GO2-22-031, Response to Audit Plan and Online Reference Portal Request2022-02-15015 February 2022 Response to Audit Plan and Online Reference Portal Request GO2-22-011, Docket No. 72-35; Independent Spent Fuel Storage Installation, 2021 Annual Effluent Release Report2022-02-0808 February 2022 Docket No. 72-35; Independent Spent Fuel Storage Installation, 2021 Annual Effluent Release Report GO2-22-001, License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2022-02-0303 February 2022 License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b GO2-22-012, Independent Spent Fuel Storage Installation - Biennial 50.59/72.48 Report2022-01-24024 January 2022 Independent Spent Fuel Storage Installation - Biennial 50.59/72.48 Report 2024-01-08
[Table view] Category:License-Application for Facility Operating License (Amend/Renewal) DKT 50
MONTHYEARGO2-24-004, License Amendment Request to Revise Emergency Plan2024-01-30030 January 2024 License Amendment Request to Revise Emergency Plan GO2-23-107, Application to Revise Technical Specifications to Adopt TSTS-584, Eliminate Automatic RWCU System Isolation on SLC Initiation2023-12-0505 December 2023 Application to Revise Technical Specifications to Adopt TSTS-584, Eliminate Automatic RWCU System Isolation on SLC Initiation GO2-23-056, Application to Revise Technical Specifications to Adopt TSTF-230, Add New Condition B to LCO 3.6.2.3, RHR Suppression Pool Cooling2023-08-29029 August 2023 Application to Revise Technical Specifications to Adopt TSTF-230, Add New Condition B to LCO 3.6.2.3, RHR Suppression Pool Cooling GO2-23-012, Application to Revise Technical Specifications to Adopt Tstf-541, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position2023-03-27027 March 2023 Application to Revise Technical Specifications to Adopt Tstf-541, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position GO2-23-035, Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling2023-03-0909 March 2023 Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling GO2-22-042, Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Colling Using the Consolidated Line Item Improvement Process2022-05-25025 May 2022 Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Colling Using the Consolidated Line Item Improvement Process GO2-22-001, License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2022-02-0303 February 2022 License Amendment Request to Adopt TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b GO2-21-133, License Amendment Request to Adopt 10 CFR 50.69, Risk Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors2021-11-0909 November 2021 License Amendment Request to Adopt 10 CFR 50.69, Risk Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors GO2-21-016, License Amendment Request to Change Technical Specification 3.4.11 Reactor Coolant System Pressure and Temperature Limits2021-10-13013 October 2021 License Amendment Request to Change Technical Specification 3.4.11 Reactor Coolant System Pressure and Temperature Limits GO2-21-042, License Amendment Request to Adopt TSTF-546, Revise APRM Channel Adjustment Surveillance Requirement2021-05-0808 May 2021 License Amendment Request to Adopt TSTF-546, Revise APRM Channel Adjustment Surveillance Requirement GO2-20-104, On-Site Cooling System Sediment Disposal2020-12-21021 December 2020 On-Site Cooling System Sediment Disposal GO2-20-108, License Amendment Request to Adopt TSTF-439, Elinate Second Completion Times Limitng Time from Discovery of Failure to Meet an LCO2020-12-0202 December 2020 License Amendment Request to Adopt TSTF-439, Elinate Second Completion Times Limitng Time from Discovery of Failure to Meet an LCO GO2-20-095, Application to Revise Technical Specifications to Adopt TSTF-582, 'Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements2020-09-24024 September 2020 Application to Revise Technical Specifications to Adopt TSTF-582, 'Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements GO2-20-063, Exigent License Amendment Request for Extension of Implementation Period for Amendment 255 Change to Control Room Air Conditioning System2020-04-15015 April 2020 Exigent License Amendment Request for Extension of Implementation Period for Amendment 255 Change to Control Room Air Conditioning System GO2-20-052, Exigent License Amendment Request for One-Time Change to Completion Times for Inoperable Electrical Distribution Systems2020-04-15015 April 2020 Exigent License Amendment Request for One-Time Change to Completion Times for Inoperable Electrical Distribution Systems GO2-20-004, Application to Revise Technical Specifications to Adopt TSTF-564, Safety Limit MCPR2020-01-27027 January 2020 Application to Revise Technical Specifications to Adopt TSTF-564, Safety Limit MCPR GO2-20-008, License Amendment Request to Revise Technical Specifications to Adopt TSTF-566, Revise Actions for Inoperable RHR Shutdown Cooling Subsystems Using the Consolidated Line Item Improvement Process2020-01-27027 January 2020 License Amendment Request to Revise Technical Specifications to Adopt TSTF-566, Revise Actions for Inoperable RHR Shutdown Cooling Subsystems Using the Consolidated Line Item Improvement Process GO2-19-090, License Amendment Request to Revise Technical Specifications to Adopt TSTF-563, Revise Instrument Testing Definitions to Incorporate the Surveillance Frequency Control Program2019-08-15015 August 2019 License Amendment Request to Revise Technical Specifications to Adopt TSTF-563, Revise Instrument Testing Definitions to Incorporate the Surveillance Frequency Control Program GO2-19-053, License Amendment Request to Remove Operating License Condition 2.C.(11) and Attachment 32019-03-27027 March 2019 License Amendment Request to Remove Operating License Condition 2.C.(11) and Attachment 3 GO2-19-027, License Amendment Request for Licensing Basis Change to Control Room Air Conditioning System2019-02-25025 February 2019 License Amendment Request for Licensing Basis Change to Control Room Air Conditioning System GO2-17-137, License Amendment Request to Update Appendix B to the Renewed Facility Operating License to Incorporate 2017 Biological Opinion2017-12-18018 December 2017 License Amendment Request to Update Appendix B to the Renewed Facility Operating License to Incorporate 2017 Biological Opinion GO2-17-181, License Amendment Request to Revise Technical Specifications to Adopt TSTF-551, Revise Secondary Containment Surveillance Requirements2017-12-12012 December 2017 License Amendment Request to Revise Technical Specifications to Adopt TSTF-551, Revise Secondary Containment Surveillance Requirements GO2-17-038, License Amendment Request to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control.2017-10-23023 October 2017 License Amendment Request to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control. GO2-17-028, License Amendment Request for Change to Technical Specification 3.5.1, ECCS-Operating.2017-07-25025 July 2017 License Amendment Request for Change to Technical Specification 3.5.1, ECCS-Operating. GO2-17-009, License Amendment Request - Revise Technical Specification 5.5.12 for Permanent Extension of Type a Test and Type C Leak Rate Test Frequencies2017-03-27027 March 2017 License Amendment Request - Revise Technical Specification 5.5.12 for Permanent Extension of Type a Test and Type C Leak Rate Test Frequencies GO2-17-062, License Amendment Request to Revise Technical Specifications to Adopt TSTF-523, Revision 22017-03-27027 March 2017 License Amendment Request to Revise Technical Specifications to Adopt TSTF-523, Revision 2 GO2-16-119, License Amendment Request for One-Time 7 Day Extension of Completion Time for TS Condition 3.5.1.A, 3.6.1.5.A, and 3.6.2.3.A2016-11-0808 November 2016 License Amendment Request for One-Time 7 Day Extension of Completion Time for TS Condition 3.5.1.A, 3.6.1.5.A, and 3.6.2.3.A ML16243A5152016-08-30030 August 2016 License Amendment Request for Reclassifying Quality Group of Low Temperature Portions of Reactor Water Cleanup System ML16244A8332016-08-30030 August 2016 License Amendment Request for Reclassifying Quality Group of Low Temperature Portions of Reactor Water Cleanup System - Drawing M523-1-3, Revision 10, Flow Diagram Reactor Water Clean-up System Radwaste Bldg. ML16210A5282016-07-28028 July 2016 Request for Amendment to Emergency Plan GO2-16-087, License Amendment Request for Changes to Technical Specification 2.1.1, Reactor Core SLs2016-07-12012 July 2016 License Amendment Request for Changes to Technical Specification 2.1.1, Reactor Core SLs GO2-16-096, License Amendment Request to Revise Operating License and Technical Specifications for Measurement Uncertainty Recapture Power Uprate2016-06-28028 June 2016 License Amendment Request to Revise Operating License and Technical Specifications for Measurement Uncertainty Recapture Power Uprate GO2-16-079, Erratum for License Amendment Request to Modify Technical Specification Surveillance Requirement (SR) 3.4.3.1 and SR 3.4.4.1 Safety/Relief Valves (Srvs) Setpoint Lower Tolerance2016-05-18018 May 2016 Erratum for License Amendment Request to Modify Technical Specification Surveillance Requirement (SR) 3.4.3.1 and SR 3.4.4.1 Safety/Relief Valves (Srvs) Setpoint Lower Tolerance GO2-16-046, License Amendment Request to Modify Technical Specification Surveillance Requirement (SR) 3.4.3.1 and SR 3.4.4.1 Safety/Relief Valves (Srvs) Setpoint Lower Tolerance2016-05-10010 May 2016 License Amendment Request to Modify Technical Specification Surveillance Requirement (SR) 3.4.3.1 and SR 3.4.4.1 Safety/Relief Valves (Srvs) Setpoint Lower Tolerance GO2-16-047, License Amendment Request to Revise Technical Specifications to Adopt TSTF-522, Revision 02016-03-0303 March 2016 License Amendment Request to Revise Technical Specifications to Adopt TSTF-522, Revision 0 GO2-15-070, Application for Technical Specification Change (TSTF-427) to Add LCO 3.0.9 on the Unavailability of Barriers Using the Consolidated Line Item Improvement Process2015-09-0202 September 2015 Application for Technical Specification Change (TSTF-427) to Add LCO 3.0.9 on the Unavailability of Barriers Using the Consolidated Line Item Improvement Process GO2-16-112, License Amendment Request for Reclassifying Quality Group of Low Temperature Portions of Reactor Water Cleanup System - Drawing M523-3, Revision 10, Flow Diagram Reactor Water Clean-up System Radwaste Bldg.2015-06-17017 June 2015 License Amendment Request for Reclassifying Quality Group of Low Temperature Portions of Reactor Water Cleanup System - Drawing M523-3, Revision 10, Flow Diagram Reactor Water Clean-up System Radwaste Bldg. GO2-15-075, Exigent License Amendment Request - Extension of Implementation Period for Amendment 232 Changing Technical Specification Table 3.3.1.1-1 Function 7 Scram Discharge Volume Water Level-High.2015-05-15015 May 2015 Exigent License Amendment Request - Extension of Implementation Period for Amendment 232 Changing Technical Specification Table 3.3.1.1-1 Function 7 Scram Discharge Volume Water Level-High. GO2-15-007, License Amendment Request for Adoption of Technical Specification Task Force Traveler-425, Revision 32015-03-17017 March 2015 License Amendment Request for Adoption of Technical Specification Task Force Traveler-425, Revision 3 ML14336A0062014-11-17017 November 2014 License Amendment Request for Technical Specification Change to Safety Limit Minimum Critical Power Ratio ML14268A2332014-09-0404 September 2014 Erratum for License Amendment Request for Adoption of Technical Specifications Task Force (TSTF) Traveler TSTF-423, Revision 1, Using the Consolidated Line Item Improvement Process GO2-14-126, License Amendment Request to Revise Technical Specification Surveillance Requirement for the Ultimate Heat Sink2014-08-22022 August 2014 License Amendment Request to Revise Technical Specification Surveillance Requirement for the Ultimate Heat Sink ML14234A4572014-08-12012 August 2014 License Amendment Request for Adoption of Technical Specification Task Force (TSTF) Traveler TSTF-423, Revision 1, Using the Consolidated Line Item Improvement Process GO2-14-103, Proposed Revision to License Amendment Request to Adopt TSTF-493, Revision 4, Option a, and Response to Request for Additional Information2014-06-19019 June 2014 Proposed Revision to License Amendment Request to Adopt TSTF-493, Revision 4, Option a, and Response to Request for Additional Information ML14086A3892014-03-18018 March 2014 License Amendment Request to Revise Technical Specifications to Adopt TSTF-535, Revision 0 ML13316A0092013-10-31031 October 2013 License Amendment Request for Change to Emergency Core Cooling Systems Surveillance Requirements GO2-13-138, License Amendment Request for Adoption of TSTF-493, Revision 4, Option a2013-10-0202 October 2013 License Amendment Request for Adoption of TSTF-493, Revision 4, Option a ML13247A6592013-07-25025 July 2013 License Amendment Request for Adoption of Technical Specification Task Force Traveler TSTF 477, Revision 3 GO2-13-002, License Amendment Request to Implement Prnm/Arts/Mellla - Revised Reports2013-01-0707 January 2013 License Amendment Request to Implement Prnm/Arts/Mellla - Revised Reports GO2-12-003, License Amendment Request to Make Administrative and Editorial Changes to Technical Specifications and the Operating License2012-01-0909 January 2012 License Amendment Request to Make Administrative and Editorial Changes to Technical Specifications and the Operating License 2024-01-30
[Table view] Category:Technical Specification
MONTHYEARGO2-23-107, Application to Revise Technical Specifications to Adopt TSTS-584, Eliminate Automatic RWCU System Isolation on SLC Initiation2023-12-0505 December 2023 Application to Revise Technical Specifications to Adopt TSTS-584, Eliminate Automatic RWCU System Isolation on SLC Initiation GO2-23-006, License Amendment Request to Clean-Up Operating License and Appendix a Technical Specifications2023-05-0101 May 2023 License Amendment Request to Clean-Up Operating License and Appendix a Technical Specifications GO2-23-035, Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling2023-03-0909 March 2023 Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling GO2-22-042, Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Colling Using the Consolidated Line Item Improvement Process2022-05-25025 May 2022 Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Colling Using the Consolidated Line Item Improvement Process GO2-21-016, License Amendment Request to Change Technical Specification 3.4.11 Reactor Coolant System Pressure and Temperature Limits2021-10-13013 October 2021 License Amendment Request to Change Technical Specification 3.4.11 Reactor Coolant System Pressure and Temperature Limits GO2-20-004, Application to Revise Technical Specifications to Adopt TSTF-564, Safety Limit MCPR2020-01-27027 January 2020 Application to Revise Technical Specifications to Adopt TSTF-564, Safety Limit MCPR ML19343C0352019-12-0505 December 2019 Rev. 111 to Licensee Controlled Specifications Manual - Part 2 of 2 GO2-19-098, License Amendment Request to Revise Technical Specifications to Adopt TSTF-529, Clarify Use and Application Rules2019-09-12012 September 2019 License Amendment Request to Revise Technical Specifications to Adopt TSTF-529, Clarify Use and Application Rules GO2-19-123, Supplemental Information Related to Exigent License Amendment Request for Change to Technical Specification 3.8.7 Distribution Systems-Operating2019-08-19019 August 2019 Supplemental Information Related to Exigent License Amendment Request for Change to Technical Specification 3.8.7 Distribution Systems-Operating GO2-19-119, Exigent License Amendment Request for Change to Technical Specification 3.8.7 Distribution Systems - Operating2019-08-15015 August 2019 Exigent License Amendment Request for Change to Technical Specification 3.8.7 Distribution Systems - Operating ML17355A6562017-12-21021 December 2017 Technical Specification Bases GO2-17-181, License Amendment Request to Revise Technical Specifications to Adopt TSTF-551, Revise Secondary Containment Surveillance Requirements2017-12-12012 December 2017 License Amendment Request to Revise Technical Specifications to Adopt TSTF-551, Revise Secondary Containment Surveillance Requirements GO2-17-194, Supplement to License Amendment Request to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control2017-11-15015 November 2017 Supplement to License Amendment Request to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control GO2-17-022, Supplement to License Amendment Request to Revise Technical Specifications to Adopt TSTF-522 Revision 02017-01-19019 January 2017 Supplement to License Amendment Request to Revise Technical Specifications to Adopt TSTF-522 Revision 0 GO2-16-119, License Amendment Request for One-Time 7 Day Extension of Completion Time for TS Condition 3.5.1.A, 3.6.1.5.A, and 3.6.2.3.A2016-11-0808 November 2016 License Amendment Request for One-Time 7 Day Extension of Completion Time for TS Condition 3.5.1.A, 3.6.1.5.A, and 3.6.2.3.A GO2-16-086, Application to Revise Technical Specifications to Adopt TSTF-545, Revision 32016-07-14014 July 2016 Application to Revise Technical Specifications to Adopt TSTF-545, Revision 3 GO2-16-096, License Amendment Request to Revise Operating License and Technical Specifications for Measurement Uncertainty Recapture Power Uprate2016-06-28028 June 2016 License Amendment Request to Revise Operating License and Technical Specifications for Measurement Uncertainty Recapture Power Uprate ML15355A4812015-12-21021 December 2015 Revision 87 to Technical Specification Bases GO2-15-070, Application for Technical Specification Change (TSTF-427) to Add LCO 3.0.9 on the Unavailability of Barriers Using the Consolidated Line Item Improvement Process2015-09-0202 September 2015 Application for Technical Specification Change (TSTF-427) to Add LCO 3.0.9 on the Unavailability of Barriers Using the Consolidated Line Item Improvement Process GO2-15-108, Provides Affected Technical Specification Pages Supporting License Amendment Request for Adoption of Technical Specification Task Force (TSTF) Traveler TSTF-423, Revision 1, Using the Consolidated Line Item Improvement Process2015-08-11011 August 2015 Provides Affected Technical Specification Pages Supporting License Amendment Request for Adoption of Technical Specification Task Force (TSTF) Traveler TSTF-423, Revision 1, Using the Consolidated Line Item Improvement Process GO2-15-075, Exigent License Amendment Request - Extension of Implementation Period for Amendment 232 Changing Technical Specification Table 3.3.1.1-1 Function 7 Scram Discharge Volume Water Level-High.2015-05-15015 May 2015 Exigent License Amendment Request - Extension of Implementation Period for Amendment 232 Changing Technical Specification Table 3.3.1.1-1 Function 7 Scram Discharge Volume Water Level-High. GO2-15-007, License Amendment Request for Adoption of Technical Specification Task Force Traveler-425, Revision 32015-03-17017 March 2015 License Amendment Request for Adoption of Technical Specification Task Force Traveler-425, Revision 3 GO2-14-139, Attachment 6 - GNF-001N8896-R3-NP, Gnf Additional Information Regarding the Requested Changes to the Technical Specification SLMCPR, Columbia Cycle 232014-10-31031 October 2014 Attachment 6 - GNF-001N8896-R3-NP, Gnf Additional Information Regarding the Requested Changes to the Technical Specification SLMCPR, Columbia Cycle 23 GO2-14-126, License Amendment Request to Revise Technical Specification Surveillance Requirement for the Ultimate Heat Sink2014-08-22022 August 2014 License Amendment Request to Revise Technical Specification Surveillance Requirement for the Ultimate Heat Sink ML14010A0302014-02-11011 February 2014 Issuance of Amendment No. 227, Request to Adopt Technical Specification Task Force (TSTF)-477, Revision 3, Adding an Action Statement for Two Inoperable Control Room Air Conditioning Subsystem ML14010A2902013-12-30030 December 2013 Columbia, 10 CFR 50.71 Maintenance of Records Licensing Basis Document Update ML13247A6592013-07-25025 July 2013 License Amendment Request for Adoption of Technical Specification Task Force Traveler TSTF 477, Revision 3 GO2-13-043, Request for Technical Specification Interpretation Regarding the Offsite Power Supplies to the Onsite Class 1E AC Power Distribution System2013-03-13013 March 2013 Request for Technical Specification Interpretation Regarding the Offsite Power Supplies to the Onsite Class 1E AC Power Distribution System ML12011A1492011-12-14014 December 2011 Columbia, Technical Specification (TS) Basis, Rev. 69, Licensee Controlled Specifications (LCS) Rev. 67 and Operational Quality Assurance Program Description (Oqapd), Rev. 44 ML1013903692010-05-11011 May 2010 Columbia Generating Station, License Amendment Request to Change Technical Specifications in Support of Prnm/Arts/Mella Implementation GO2-09-011, License Amendment Request to Revise Control Rod Notch Testing Frequency Using the Consolidated Line Item Improvement Process (CLIIP) for TSTF-4752009-01-14014 January 2009 License Amendment Request to Revise Control Rod Notch Testing Frequency Using the Consolidated Line Item Improvement Process (CLIIP) for TSTF-475 ML0826100562008-09-30030 September 2008 Tech Spec Pages for Amendment No. 210 Revised TS 3.3.5.2 RCIC System Instrumentation, and TS 3.5.2 ECCS-Shotdown to Increase Storage Tank Level GO2-08-124, License Amendment Request for Proposed Changes to Columbia Technical Specification 3.3.3.1; Change Group 1 Primary Containment Isolation Valves Reactor Water Level Isolation Signal from Level 2 to Level 12008-09-0909 September 2008 License Amendment Request for Proposed Changes to Columbia Technical Specification 3.3.3.1; Change Group 1 Primary Containment Isolation Valves Reactor Water Level Isolation Signal from Level 2 to Level 1 ML0822506802008-07-16016 July 2008 Columbia - License Amendment Request for Changes to Technical Specifications Involving Core Operating Limits Report and Scram Time Testing GO2-08-071, License Amendment Request for Adoption of TSTF-484, Use of TS 3.10.1 for Scram Time Testing Activities2008-05-0707 May 2008 License Amendment Request for Adoption of TSTF-484, Use of TS 3.10.1 for Scram Time Testing Activities GO2-07-123, License Amendment Request to Technical Specifications Associated with Condensate Storage Tank Level2007-08-0808 August 2007 License Amendment Request to Technical Specifications Associated with Condensate Storage Tank Level GO2-07-116, Request for Amendment to Technical Specification to Modify Requirements Regarding Control Room Envelope Habitability Using the Consolidated Line Item Improvement Process (CLIIP)2007-07-30030 July 2007 Request for Amendment to Technical Specification to Modify Requirements Regarding Control Room Envelope Habitability Using the Consolidated Line Item Improvement Process (CLIIP) GO2-07-112, License Amendment Request for Proposed Changes to Technical Specifications: Miscellaneous Administrative Changes Including Adoption of Approved TSTF Travelers 284, 479, and 4852007-07-30030 July 2007 License Amendment Request for Proposed Changes to Technical Specifications: Miscellaneous Administrative Changes Including Adoption of Approved TSTF Travelers 284, 479, and 485 GO2-07-111, License Amendment Request for Proposed Changes to Columbia Technical Specifications: Adoption of Approved Generic Technical Specification Changes Associated with Containment Isolation Valves2007-07-30030 July 2007 License Amendment Request for Proposed Changes to Columbia Technical Specifications: Adoption of Approved Generic Technical Specification Changes Associated with Containment Isolation Valves GO2-07-109, License Amendment Request to Technical Specifications Associated with Condensate Storage Tank Level2007-07-26026 July 2007 License Amendment Request to Technical Specifications Associated with Condensate Storage Tank Level ML0709204712007-05-0101 May 2007 Technical Specification Pages - Issuance of Amendment No. 204 AC and DC Electrical Power ML0706400652007-03-23023 March 2007 Technical Specification, AC Sources - Operating 3.8.1 GO2-07-024, GO2-07-024 - Columbia Generating Station - Exigent License Amendment Request - Amend Operating License to Revise TS 3.6.1.7 Suppression Chamber-to-Drywell Vacuum Breakers2007-02-0202 February 2007 GO2-07-024 - Columbia Generating Station - Exigent License Amendment Request - Amend Operating License to Revise TS 3.6.1.7 Suppression Chamber-to-Drywell Vacuum Breakers GO2-06-061, Request for Amendment to Technical Specifications Surveillance Requirements for the Suppression Chamber-to-Drywell Vacuum Breakers and the Drywell-to-Suppression Chamber Bypass Leakage Test2006-04-18018 April 2006 Request for Amendment to Technical Specifications Surveillance Requirements for the Suppression Chamber-to-Drywell Vacuum Breakers and the Drywell-to-Suppression Chamber Bypass Leakage Test GO2-06-042, Revised Technical Specification Bases Change (for Information) and Summary of Commitments Associated with the License Amendment Requests for Extension of Diesel Generator Completion Time2006-03-20020 March 2006 Revised Technical Specification Bases Change (for Information) and Summary of Commitments Associated with the License Amendment Requests for Extension of Diesel Generator Completion Time GO2-05-184, Supplement to the License Amendment Request for a One-Time Extension to Technical Specification 3.7.12005-11-15015 November 2005 Supplement to the License Amendment Request for a One-Time Extension to Technical Specification 3.7.1 ML0507000912005-03-0909 March 2005 Technical Specification Pages (Amd. 190) Re Elimination of Requirements to Provide Monthly Operating Reports & Annual Occupational Radiation Exposure Reports GO2-04-137, Request for Amendment to Technical Specifications for One-Time Extension of Containment Leak Rate Test Interval2004-08-0505 August 2004 Request for Amendment to Technical Specifications for One-Time Extension of Containment Leak Rate Test Interval ML0415405452004-05-19019 May 2004 Application for Amendment of Facility Operating for Extension of Diesel Generator Completion Time GO2-02-192, Request for Amendment to TS 4.2.1 and 5.6.5.b, Corrections to Original Submittal2002-11-27027 November 2002 Request for Amendment to TS 4.2.1 and 5.6.5.b, Corrections to Original Submittal 2023-05-01
[Table view] Category:Bases Change
MONTHYEARGO2-23-035, Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling2023-03-0909 March 2023 Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling GO2-21-016, License Amendment Request to Change Technical Specification 3.4.11 Reactor Coolant System Pressure and Temperature Limits2021-10-13013 October 2021 License Amendment Request to Change Technical Specification 3.4.11 Reactor Coolant System Pressure and Temperature Limits ML19343C0352019-12-0505 December 2019 Rev. 111 to Licensee Controlled Specifications Manual - Part 2 of 2 GO2-19-123, Supplemental Information Related to Exigent License Amendment Request for Change to Technical Specification 3.8.7 Distribution Systems-Operating2019-08-19019 August 2019 Supplemental Information Related to Exigent License Amendment Request for Change to Technical Specification 3.8.7 Distribution Systems-Operating ML17355A6562017-12-21021 December 2017 Technical Specification Bases GO2-16-086, Application to Revise Technical Specifications to Adopt TSTF-545, Revision 32016-07-14014 July 2016 Application to Revise Technical Specifications to Adopt TSTF-545, Revision 3 GO2-16-096, License Amendment Request to Revise Operating License and Technical Specifications for Measurement Uncertainty Recapture Power Uprate2016-06-28028 June 2016 License Amendment Request to Revise Operating License and Technical Specifications for Measurement Uncertainty Recapture Power Uprate ML15355A4812015-12-21021 December 2015 Revision 87 to Technical Specification Bases GO2-15-070, Application for Technical Specification Change (TSTF-427) to Add LCO 3.0.9 on the Unavailability of Barriers Using the Consolidated Line Item Improvement Process2015-09-0202 September 2015 Application for Technical Specification Change (TSTF-427) to Add LCO 3.0.9 on the Unavailability of Barriers Using the Consolidated Line Item Improvement Process GO2-15-007, License Amendment Request for Adoption of Technical Specification Task Force Traveler-425, Revision 32015-03-17017 March 2015 License Amendment Request for Adoption of Technical Specification Task Force Traveler-425, Revision 3 GO2-14-139, Attachment 6 - GNF-001N8896-R3-NP, Gnf Additional Information Regarding the Requested Changes to the Technical Specification SLMCPR, Columbia Cycle 232014-10-31031 October 2014 Attachment 6 - GNF-001N8896-R3-NP, Gnf Additional Information Regarding the Requested Changes to the Technical Specification SLMCPR, Columbia Cycle 23 GO2-14-126, License Amendment Request to Revise Technical Specification Surveillance Requirement for the Ultimate Heat Sink2014-08-22022 August 2014 License Amendment Request to Revise Technical Specification Surveillance Requirement for the Ultimate Heat Sink ML14010A2902013-12-30030 December 2013 Columbia, 10 CFR 50.71 Maintenance of Records Licensing Basis Document Update ML13247A6592013-07-25025 July 2013 License Amendment Request for Adoption of Technical Specification Task Force Traveler TSTF 477, Revision 3 GO2-13-043, Request for Technical Specification Interpretation Regarding the Offsite Power Supplies to the Onsite Class 1E AC Power Distribution System2013-03-13013 March 2013 Request for Technical Specification Interpretation Regarding the Offsite Power Supplies to the Onsite Class 1E AC Power Distribution System ML12011A1492011-12-14014 December 2011 Columbia, Technical Specification (TS) Basis, Rev. 69, Licensee Controlled Specifications (LCS) Rev. 67 and Operational Quality Assurance Program Description (Oqapd), Rev. 44 ML1013903692010-05-11011 May 2010 Columbia Generating Station, License Amendment Request to Change Technical Specifications in Support of Prnm/Arts/Mella Implementation GO2-07-112, License Amendment Request for Proposed Changes to Technical Specifications: Miscellaneous Administrative Changes Including Adoption of Approved TSTF Travelers 284, 479, and 4852007-07-30030 July 2007 License Amendment Request for Proposed Changes to Technical Specifications: Miscellaneous Administrative Changes Including Adoption of Approved TSTF Travelers 284, 479, and 485 GO2-07-024, GO2-07-024 - Columbia Generating Station - Exigent License Amendment Request - Amend Operating License to Revise TS 3.6.1.7 Suppression Chamber-to-Drywell Vacuum Breakers2007-02-0202 February 2007 GO2-07-024 - Columbia Generating Station - Exigent License Amendment Request - Amend Operating License to Revise TS 3.6.1.7 Suppression Chamber-to-Drywell Vacuum Breakers GO2-06-042, Revised Technical Specification Bases Change (for Information) and Summary of Commitments Associated with the License Amendment Requests for Extension of Diesel Generator Completion Time2006-03-20020 March 2006 Revised Technical Specification Bases Change (for Information) and Summary of Commitments Associated with the License Amendment Requests for Extension of Diesel Generator Completion Time 2023-03-09
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Text
W. Grover Hettel Columbia Generating Station P.O. Box 968, PE23 Richland, WA 99352-0968 Ph. 509.377.8311 l F. 509.377.4150 wghettel@energy-northwest.com August 22, 2014 GO2-14-126 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001
Subject:
COLUMBIA GENERATING STATION, DOCKET NO. 50-397 LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK
Dear Sir or Madam:
Pursuant to 10 CFR 50.90 and 10 CFR 50.91(a)(6), Energy Northwest hereby requests a license amendment to revise the Columbia Generating Station (Columbia) Technical Specification (TS) Surveillance Requirement (SR) for the ultimate heat sink (UHS). The revision will clarify that spray pond level is the average of the level in both ponds. This amendment is requested to align the SR with the design basis of the UHS spray ponds.
The design of the UHS is such that it is difficult to meet the current SR when only one service water pump is in operation without overflowing a spray pond resulting in a net loss of water inventory, which may challenge the ability of the UHS to provide sufficient inventory for 30 days. However, if the SR is not met, a plant shutdown is required.
Therefore, Energy Northwest requests a timely review of this application. contains an evaluation of the proposed changes and includes a no significant hazards determination and environmental consideration. Attachment 2 contains the marked up version of the proposed changes to the Columbia TS. contains the proposed Columbia TS Bases changes (for information only). contains the clean version of the proposed changes to the Columbia TS.
This letter and its enclosures contain no regulatory commitments.
Approval of the proposed amendment is requested within six weeks of the date of the submittal. Once approved, the amendment will be implemented within 10 days.
The proposed change has been evaluated in accordance with 10 CFR 50.91(a)(1) using criteria in 10 CFR 50.92(c) and it has been determined that this change involves no significant hazards consideration.
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 1 of 12 Evaluation of Proposed Change 1.0
SUMMARY
DESCRIPTION This evaluation supports a License Amendment Request (LAR) to revise the Columbia Generating Station (Columbia) Technical Specification (TS) Surveillance Requirements for the ultimate heat sink (UHS). The Surveillance Requirement (SR) will be revised from Verify the water level of each UHS spray pond is 432 ft 9 inches mean sea level to Verify the average water level in the UHS spray ponds is 432 feet 9 inches mean sea level.
Implementation of this LAR will result in no physical modification to the plant. This proposed change has no adverse effect on the plant or plant safety.
2.0 DETAILED DESCRIPTION 2.1 Background 2.1.1 Service Water The standby service water (SW) system is described in Section 9.2.7 of Columbias Final Safety Analysis Report (FSAR) (Reference 1) and includes vertical SW pumps located adjacent to the two spray ponds in two separate pump houses. The pumps discharge to independent piping systems which serve emergency core cooling system (ECCS) equipment, auxiliary plant equipment, and reactor shutdown cooling equipment.
The list of equipment cooled by SW is contained in FSAR Table 9.2-4. During the normal and emergency shutdown modes of operation, water is circulated from the spray ponds to the equipment requiring cooling, and returned to the ponds. The SW system dissipates heat through the use of an oriented spray ring header system at the ponds.
A spray ring bypass is provided that allows water to be returned directly to the pond through use of manually operated isolation valves to allow control of pond temperature during cold weather operations.
2.1.2 UHS The UHS is described in Section 9.2.5 of Columbias FSAR and consists of two concrete spray ponds. The design basis function of the UHS is to provide a source of water for the SW system for 30 days and to absorb the heat transferred to it from the plant via the SW system during that time period without exceeding its design temperature.
The spray ponds provide suction and discharge points for the redundant pumping and spray facilities of the SW system. The pond and pump house arrangements are shown in FSAR Figure 9.2-7. Standby service water loop A draws water from pond A, cools
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 2 of 12 the Division 1 equipment, and discharges through a spray ring into pond B for heat dissipation. Similarly, SW loop B draws water from pond B, cools Division 2 equipment, and discharges through a spray ring into pond A. The water then returns to the initial pond through a 30 inch diameter siphon line. Figure 1 contains a simplified sketch of the UHS and SW system.
The ponds were licensed such that the combined water volume of the spray ponds is adequate to provide cooling water for 30 days of operation, assuming maximum evaporation and drift losses.
Each pond is 250 feet long by 250 feet wide by 15 feet deep. The floor of each pond is located at an elevation of 420 feet mean sea level. The design of the spray ponds includes a non-isolable 30 inch siphon line connecting both spray ponds to automatically transfer water from one pond to the other. A majority of the siphon line is buried; however, sections of the line are not buried and are submerged in the spray ponds after penetrating the spray pond walls. In each spray pond, the submerged siphon line includes a ninety degree elbow which then directs the siphon line downward terminating 18 inches above the floor of the spray ponds. The siphon line between the two ponds is designed to transfer 10,500 gpm without overflowing one of the spray ponds. The siphon line assures that the entire inventory of water in the ponds is available to either loop and that makeup water added to one pond is available to the other. The siphon line allows transfer of colder water from the bottom of the spray pond in which the sprays are operating to the pond from which the operating pump is taking suction. This arrangement provides an effective dispersion of the heat being absorbed by the water inventory. The siphon allows a single train of SW access to the full 30 day supply provided by the two SW ponds.
2.2 Circumstances Necessitating the Change The existing language in SR 3.7.1.1 requires verification that the level in each spray pond is greater than or equal to 432 feet 9 inches (432.75 feet) mean sea level. Due to the design of the spray ponds and SW system, it is difficult to meet this requirement in each pond when only one SW pump is in operation.
Normal level in the spray ponds is maintained less than 433.5 feet. The high level alarm is at 434.25 feet. The pond overflow is at 434.5 feet. Figure 2 contains a depiction of the spray pond levels.
With one SW pump in operation, the level in the associated pond drops approximately 9-11 inches (0.75-0.92 feet) while the level in the other pond rises by an equivalent amount for a total differential level of 18-22 inches (1.50-1.83 feet). In order to meet the minimum level of 432.75 feet when one SW pump is in operation, the normal level in the ponds would need to be maintained slightly above 433.5 feet. Once the SW pump starts, the level in the pond providing the pump suction will drop to approximately
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 3 of 12 432.75 feet. However, the level in the other pond will rise by an equivalent amount -
potentially exceeding the overflow resulting in a loss of inventory out of the ponds. A loss of inventory may affect the ability of the UHS to meet the design and licensing requirement to provide 30 days of cooling.
With both SW pumps in operation, the levels in the ponds are equalized. However, if one SW pump becomes inoperable for any reason, the UHS may have to be declared inoperable since SR 3.7.1.1 may not be met due to this phenomenon. With the UHS inoperable for this reason, TS 3.7.1 Condition C would be entered with the Required Action to be in Mode 3 in 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and Mode 4 in 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
Additionally, certain plant conditions result in an automatic start of only one SW pump.
If this occurs, SR 3.7.1.1 may not be met and the UHS would be declared inoperable as described above.
The SW system is not normally in operation. However, SW is operated monthly to support other TS surveillances (for instance the monthly diesel generator surveillances.)
In these instances, both SW pumps would have to be put in operation to ensure pond level remains above the required minimum level resulting in excess wear on the pumps.
Prior to Amendment 149, the Columbia TS contained SR 4.7.1.3.a to verify the water level of the ultimate heat sink is within the limits of the Limiting Condition for Operation (LCO) 3.7.1.3. This LCO specified that the ultimate heat sink shall be operable with a minimum water level at elevation 432 feet 9 inches mean sea level. Amendment 149 approved the conversion to Improved Technical Specifications (ITS) (Reference 2).
Columbia SR 3.7.1.1 is based on NUREG-1434 (Reference 3) SR 3.7.1.1 Rev. 1, which requires verification of the water level of each [UHS] cooling tower basin In the LAR for the ITS conversion (Reference 4), Energy Northwest erroneously proposed SR 3.7.1.1 to require verification of the water level of each UHS spray pond The LAR should have proposed SR 3.7.1.1 require verification of the average water level in the UHS spray ponds. This error was discovered on August 14, 2014. Actions were immediately instituted to ensure the minimum pond level is maintained in each pond in accordance with the requirements of SR 3.7.1.1. Additionally, this issue was entered into the Energy Northwest corrective action program.
2.3 Description of Proposed Columbia Technical Specification Changes The Surveillance Requirement (SR) to verify spray pond level will be revised to remove the reference to each spray pond and replace it with the average water level in the ponds.
Specifically, SR 3.7.1.1 will be revised from Verify the water level of each UHS spray pond is 432 ft 9 inches mean sea level to Verify the average water level in the UHS spray ponds is 432 feet 9 inches mean sea level.
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 4 of 12
3.0 TECHNICAL EVALUATION
3.1 Water Inventory Energy Northwest proposes to revise the SR to verify the average water level in the UHS spray ponds is greater than or equal to 432 feet 9 inches (432.75 feet) mean sea level. The spray pond siphon line provides for transfer of water between the two ponds.
As long as pond level remains above the siphon (elevation 421.5 feet), water flows between the ponds. The siphon line was tested during startup to confirm that the siphon would not break until the water level reached the bottom of the siphon line in the suction pond. Level changes induced by the operation of a single pump are acceptable as long as the inventory remains within the pond structure. Since the ponds can communicate with each other, the true measure of adequate pond inventory is obtained by averaging the level of the two ponds.
For instance, with the level in the spray ponds maintained at or slightly below 433.25 feet, the level change due to a single SW pump start is acceptable. That is, the level in the pond with the operating pump will drop to approximately 432.25 feet while the level in the other pond will rise to approximately 434.25 feet. There is a net conservation of water inventory between the two ponds.
The characteristics of the siphon line are reflected in the UHS calculation for mass loss (Reference 5). The calculation contains conservative assumptions for the siphon differential pressure. FSAR Table 9.2-1 provides the minimum pond capacity (two ponds at elevation 432 feet 9 inches) as 11,920,000 gallons. FSAR Table 9.2-6 documents the spray pond water losses 30 days after the design basis loss of coolant accident) as 9,387,000 gallons. The inventory of water remaining in the spray ponds after 30 days must be greater than or equal to 2,260,000 gallons. The results show that the amount of water available over the minimum requirement is 273,000 gallons demonstrating that sufficient inventory is available for 30 days.
The bottom of the pump sump is at elevation 408 feet 3 inches (408.25 feet) mean sea level, which is lower than the pond bottom to ensure sufficient pump suction submergence at the lowest possible pond water level.
Based on the above discussion, the design of the UHS and the SW system fully accounts for the presence and characteristics of the siphon line. The SR should be revised to be consistent with the analysis assumptions.
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 5 of 12 3.2 Siphon Line Inspections The siphon line is ASME Section III, Code Class 3 piping. The buried portion of the siphon line is included in Columbias Inservice Inspection (ISI) Program and is examined in accordance with ASME Section XI. The applicable edition and addenda for Columbia is the 2001 Edition through the 2003 Addenda. This line is classified in Code Category D-B, item D2.10, Pressure retaining components. In accordance with IWA-5244(b)(2), the pressure test of non-isolable buried Code Class 3 components consists of a test to confirm that flow during operation is not impaired. The quarterly SW operability testing demonstrates that adequate flow is being produced and that the line is not impaired during operation. Additional discussion of the ASME code inspection requirements for the siphon line is contained in Reference 6.
In September 2007, Energy Northwest contracted with Structural Integrity Associates, Inc. for performance of a long range guided wave (G-Scan') inspection of the siphon line. The G-Scan' system is a low frequency ultrasonic guided wave technique developed for the rapid survey of pipes to detect both internal and external corrosion.
Guided wave ultrasonic inspection uses multiple transducer arrays to direct sound energy in a circumferential mode, which creates torsional guided waves. These torsional waves propagate down the pipe and reflect off features such as welds, supports, or areas of wall loss. In addition to the G-Scan' piping interrogation, B-Scan ultrasonic inspection was used to measure the nominal wall thickness of each pipe segment. The Phoenix Ultrasonic B-Scan imaging system profiles the pipe wall in two dimensions, verifies original wall thickness, and profiles corrosion pitting. The inspection results indicated only minor corrosion throughout the siphon line. In September 2008, Energy Northwest performed ultrasonic thickness measurements of an elbow in the buried portion of the siphon line. The inspection results indicated that the minimum wall thickness was greater than nominal wall thickness.
Based on the fact that the siphon line is included in the ISI program and that recently performed inspections have revealed no issues with the integrity of the piping, no additional testing of the siphon line is proposed.
3.3 Impact on Submittals under Review by NRC The NRC is presently reviewing Energy Northwests LAR to adopt TSTF-423, Technical Specifications End States NEDC-32988-A (Reference 7). The proposed change to SR 3.7.1.1 does not rely on or credit any of the changes proposed in that LAR. The two submittals are not linked.
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 6 of 12
4.0 REGULATORY EVALUATION
4.1 Applicable Regulatory Requirements 10 CFR 50 Appendix A General Design Criteria (GDC):
- Criterion 44 - Cooling water. A system to transfer heat from structures, systems, and components important to safety, to an ultimate heat sink shall be provided. The system safety function shall be to transfer the combined heat load of these structures, systems, and components under normal operating and accident conditions.
- Criterion 45 - Inspection of cooling water system. The cooling water system shall be designed to permit appropriate periodic inspection of important components, such as heat exchangers and piping, to assure the integrity and capability of the system.
- Criterion 46 - Testing of cooling water system. The cooling water system shall be designed to permit appropriate periodic pressure and functional testing to assure (1) the structural and leak tight integrity of its components, (2) the operability and the performance of the active components of the system, and (3) the operability of the system as a whole and, under conditions as close to design as practical, the performance of the full operational sequence that brings the system into operation for reactor shutdown and for loss-of-coolant accidents, including operation of applicable portions of the protection system and the transfer between normal and emergency power sources.
The SW system satisfies GDC 44 by transferring heat from emergency and auxiliary loads to the SW spray ponds which comprise the UHS. As discussed above, UHS provides cooling water to the SW system during accident conditions for cooling of essential plant auxiliary components. UHS temperatures are maintained within limits by the use of oriented spray cooling nozzles connected to a ring header. Each SW subsystem pulls water from its respective spray pond and returns the water to the other spray pond, either through the spray ring header or directly to the pond. The water then returns to the initial pond through the 30 inch diameter siphon. The siphon line connecting the two ponds allows transfer of colder water from the bottom of the spray pond in which the sprays are operating to the pond from which the operating pump is taking suction. The proposed change has no adverse effect on the ability of the SW system or UHS to perform their design functions. The requirements of GDC 44 are satisfied.
The UHS is not normally operated. Its availability is ensured by periodic tests and inspections. The UHS design also incorporates provisions for accessibility to permit inservice inspection as required. Thus, the requirements of GDC 45 and 46 are satisfied.
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 7 of 12 4.2 Applicable Regulatory Guidance Regulatory Guide (RG) 1.27, Revision 2, January 1976, Ultimate Heat Sink for Nuclear Power Plants:
- Regulatory Position C.1 - The ultimate heat sink should be capable of providing sufficient cooling for at least 30 days (a) to permit simultaneous safe shutdown and cooldown of all nuclear reactor units that it serves and to maintain them in a safe shutdown condition, and (b) in the event of an accident in one unit, to limit the effects of that accident safely, to permit simultaneous and safe shutdown of the remaining units, and to maintain them in a safe shutdown condition.
- Regulatory Position C.3 - The ultimate heat sink should consist of at least two sources of water, including their retaining structures, each with the capability to perform the safety functions specified in regulatory position I, unless it can be demonstrated that there is an extremely low probability of losing the capability of a single source.
- Regulatory Position C.4 - The technical specifications for the plant should include provisions for actions to be taken in the event that conditions threaten partial loss of the capability of the ultimate heat sink or the plant temporarily does not satisfy regulatory positions 1 and 3 during operation.
The safety-related water supply is provided by two spray ponds designed to contain a 30 day supply of cooling water for safe shutdown of the plant during accident conditions.
The SW system circulates cooling water from the ponds to equipment required to shut down the plant from either a normal or accident condition and maintain it in a safe shutdown condition; it also discharges the warm return water through the spray system to dissipate the heat. There are two redundant SW loops, each serving an independent division of systems and equipment. Each loop takes water from one pond and returns it through the spray system in the alternate pond. If only one loop is in operation, water is transferred between the ponds through a siphon.
Limiting Condition for Operation (LCO) 3.7.1 requires the UHS be operable. Upon discovery of a failure to meet the LCO, the Required Actions of the associated Conditions shall be met. SR 3.7.1.1 contains the requirements for minimum spray pond inventory. Since the ponds are connected via the siphon line, the requirement that the average water level in the UHS spray ponds be greater than or equal to 432 feet 9 inches (432.75 feet) mean sea level ensures adequate water inventory is available to satisfy RG 1.27 requirements.
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 8 of 12 5.0 SIGNIFICANT HAZARDS CONSIDERATION Energy Northwest has evaluated whether or not a significant hazards consideration is involved with the proposed amendment by focusing on the three standards set forth in 10 CFR 50.92, "Issuance of amendment," as discussed below:
- 1) Does the proposed amendment involve a significant increase in the probability or consequences of an accident previously evaluated?
Response: No.
The proposed revision to SR 3.7.1.1 will clarify that spray pond level is the average of the level in both ponds. This amendment is requested to align the Surveillance Requirements with the design basis of the UHS spray ponds. The requested changes do not serve as initiators of any Columbia accident previously evaluated.
The existing UHS analysis utilizes the total water inventory in both ponds. The analysis demonstrates compliance with the RG 1.27 requirement for 30 days of inventory and is reflected in FSAR section 9.2.5. The accident probabilities are unaffected and the consequences remain unchanged.
Therefore there is no significant increase in the probability or consequences of an accident previously evaluated.
- 2) Does the proposed amendment create the possibility of a new or different kind of accident from any accident previously analyzed?
Response: No.
There are no postulated hazards, new or different, contained in this amendment.
Analysis has determined that these changes are bounded by existing evaluations.
Therefore, the proposed change does not create the possibility of a new or different kind of accident from any accident previously evaluated.
- 3) Does the proposed amendment involve a significant reduction in a margin of safety?
Response: No.
The proposed changes revise the SR requirement for spray pond level. This change reflects the assumptions used in the UHS analysis and corrects an error introduced in a previous TS amendment. Therefore, the proposed change does not involve a significant reduction in the margin of safety.
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 9 of 12 Based on the above, Energy Northwest concludes that the proposed amendment does not involve a significant hazards consideration under the standards set forth in 10 CFR 50.92(c), and, accordingly, a finding of no significant hazards consideration is justified.
6.0 CONCLUSION
S Based on the considerations discussed above: (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the applicable regulations as identified herein, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.
7.0 ENVIRONMENTAL CONSIDERATION
Energy Northwest has determined that the proposed amendment would change requirements with respect to installation or use of a facility component located within Columbia's restricted area, as defined in 10 CFR 20, or would change an inspection or surveillance requirement. Energy Northwest has evaluated the proposed change and has determined that the change does not involve, (i) a significant hazards consideration, (ii) a significant change in the types or a significant increase in the amounts of any effluents that may be released offsite, or (iii) a significant increase in individual or cumulative occupational radiation exposure. Accordingly, the proposed change meets the eligibility criteria for categorical exclusion in accordance with 10 CFR 51.22(c)(9).
Therefore, pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need be prepared in connection with the proposed amendment.
8.0 REFERENCES
- 1. Energy Northwest, Columbia Generating Station, Final Safety Analysis Report Amendment 62
- 2. Letter dated March 4, 1997, from TG Colburn (NRC) to JV Parrish (WPPSS),
Issuance of Amendment for the Washington Public Power Supply System Nuclear Project No. 2 (TAC No. M94226)
- 3. NUREG-1434 Rev. 1, Standard Technical Specifications General Electric BWR/6 Plants
- 4. Letter GO2-95-265, dated December 8, 1995, from JV Parrish (WPPSS) to NRC, Request for Amendment to Technical Specifications
- 5. ME-02-92-41, Ultimate Heat Sink Analysis
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 10 of 12
- 6. Letter dated May 14, 2007, from CE Johnson (NRC) to JV Parrish (Energy Northwest), Columbia Generating Station - NRC Integrated Inspection Report 05000397/2007002
- 7. Letter GO2-14-112, dated August 12, 2014, from WG Hettel (Energy Northwest) to NRC, License Amendment Request for Adoption of TSTF-423, Revision 1, Using the Consolidated Line Item Improvement Process
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 11 of 12 Figure 1 - Simplified Diagram
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Page 12 of 12 Figure 2 - Spray Pond Levels SW PUMP 15 434'6" ELEV. 10 F
14.5' 434' 6" POND OVERFLOW E 14.25' 434' 3" HI LEVEL ALARM E 1' 3" T NORMAL OPERATING LE 13.0' TO 13.5' 433' 5 433' TO 433' 6" 13.0' LO LEVEL ALARM 420'0" 0
10.0' 430' TMU PUMP STARTS SW - LI - 1A INSTRUMENT ZERO SW SPRAY POND FLOOR 0' 420' LT. RANGE 822157.10LT SW PUMP PIT FLOOR MARCH 1992 408' 3" SSW
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Attachment 2 Proposed Columbia Technical Specification Changes (Mark-Up)
SW System and UHS 3.7.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME C. Required Action and C.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time of Condition A or B AND not met.
C.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> OR Both SW subsystems inoperable.
OR UHS inoperable for reasons other than Condition A.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.1.1 Verify the average water level of each in the UHS 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> spray ponds is 432 feet 9 inches mean sea level.
SR 3.7.1.2 Verify the average water temperature of each UHS 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> spray pond is 77°F.
SR 3.7.1.3 -------------------------------NOTE------------------------------
Isolation of flow to individual components does not render SW subsystem inoperable.
Verify each SW subsystem manual, power 31 days operated, and automatic valve in the flow path servicing safety related systems or components, that is not locked, sealed, or otherwise secured in position, is in the correct position.
Columbia Generating Station 3.7.1-2 Amendment No. 169 225
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Attachment 3 Proposed Columbia Technical Specification Bases Changes (for information only)
SW System and UHS B 3.7.1 BASES LCO The OPERABILITY of subsystem A (Division 1) and subsystem B (Division 2) of the SW System is required to ensure the effective operation of the RHR System in removing heat from the reactor, and the effective operation of other safety related equipment during a DBA or transient. Requiring both subsystems to be OPERABLE ensures that either subsystem A or B will be available to provide adequate capability to meet cooling requirements of the equipment required for safe shutdown in the event of a single failure.
A subsystem is considered OPERABLE when:
- a. The associated pump is OPERABLE; and
- b. The associated piping (including the suction piping and spray ring in the associated UHS spray pond), valves, instrumentation, and controls required to perform the safety related function are OPERABLE.
OPERABILITY of the UHS is based on a maximum water temperature of 77°F and a minimum average water level of each the ponds at or above elevation 432 feet 9 inches mean sea level and an average sediment depth of < 0.5 ft, consistent with the analysis of Ref. 2, and an OPERABLE siphon line between the two spray ponds. If a single loop of Service Water is in operation, the minimum allowable water level
( 432 ft 9 inches mean sea level) is determined by taking the arithmetic average of both ponds, provided the siphon line is OPERABLE.
The isolation of the SW System to components or systems may render those components or systems inoperable, but does not affect the OPERABILITY of the SW System if those component's or system's applicable LCO Conditions and Required Actions are entered. For example, if SW cooling to the LPCS pump motor was isolated, entry into LCO 3.5.1 or 3.5.2 Conditions and Required Actions, as applicable, would be sufficient and SW OPERABILITY would not be affected.
OPERABILITY of the High Pressure Core Spray (HPCS) Service Water (SW) System is addressed by LCO 3.7.2.
Columbia Generating Station B 3.7.1-3 Revision 75
SW System and UHS B 3.7.1 BASES ACTIONS (continued)
C.1 and C.2 If the SW subsystem cannot be restored to OPERABLE status within the associated Completion Time, or both SW subsystems are inoperable, or the UHS is determined inoperable for reasons other than Condition A, the unit must be placed in a MODE in which the LCO does not apply. To achieve this status, the unit must be placed in at least MODE 3 within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in MODE 4 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.
SURVEILLANCE SR 3.7.1.1 REQUIREMENTS Verification of the UHS spray pond level ensures adequate long term (30 days) cooling can be maintained. The water level is determined by taking the average of both ponds. The 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Frequency is based on operating experience related to trending of the parameter variations during the applicable MODES.
SR 3.7.1.2 Verification of the UHS spray pond temperature ensures that the heat removal capability of the SW System is within the assumptions of the DBA analysis. The 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Frequency is based on operating experience related to trending of the parameter variations during the applicable MODES.
SR 3.7.1.3 Verifying the correct alignment for each manual, power operated, and automatic valve in each SW subsystem flow path provides assurance that the proper flow paths will exist for SW operation. This SR does not apply to valves that are locked, sealed, or otherwise secured in position, since these valves were verified to be in the correct position prior to locking, sealing, or securing. A valve is also allowed to be in the nonaccident position and yet considered in the correct position, provided it can be automatically realigned to its accident position within the required time.
This SR does not require any testing or valve manipulation; rather, it involves verification that those valves capable of potentially being mispositioned are in the correct position. This SR does not apply to valves that cannot be inadvertently misaligned, such as check valves.
Columbia Generating Station B 3.7.1-5 Revision 73
LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT FOR THE ULTIMATE HEAT SINK Attachment 4 Proposed Columbia Technical Specification Changes (Clean)
SW System and UHS 3.7.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME C. Required Action and C.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time of Condition A or B AND not met.
C.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> OR Both SW subsystems inoperable.
OR UHS inoperable for reasons other than Condition A.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.1.1 Verify the average water level in the UHS spray 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> ponds is 432 feet 9 inches mean sea level.
SR 3.7.1.2 Verify the average water temperature of each UHS 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> spray pond is 77°F.
SR 3.7.1.3 -------------------------------NOTE------------------------------
Isolation of flow to individual components does not render SW subsystem inoperable.
Verify each SW subsystem manual, power 31 days operated, and automatic valve in the flow path servicing safety related systems or components, that is not locked, sealed, or otherwise secured in position, is in the correct position.
Columbia Generating Station 3.7.1-2 Amendment No. 169 225