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	Issue date	Title	Topic
ML23288A000	7 December 2023	Issuance of Amendment No. 272 to Adopt TSTF-541, Revision 2, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position	Ultimate heat sink Water Inventory Control Surveillance Frequency Control Program
ML23083B401	27 April 2023	Issuance of Amendment No. 271 to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling	Surveillance Frequency Control Program
ML23013A081	15 March 2023	Issuance of Amendment No. 270 Revision to Technical Specifications to Adopt TSTF 505, Revision 2, Provide Risk-Informed Extended Completion Times-RITSTF Initiative 4B	Safe Shutdown Reactor Vessel Water Level High Radiation Area Ultimate heat sink Water Inventory Control Internal Flooding Probabilistic Risk Assessment FLEX Fukushima Dai-Ichi Surveillance Frequency Control Program Scram Discharge Volume Large early release frequency Maintenance Rule Program Offsite Circuit
ML22340A689	20 December 2022	Regulatory Audit Summary in Support of Review for LAR to Revise Technical Specifications to Adopt TSTF-505, Rev. 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4B	Probabilistic Risk Assessment
ML22308A096	15 December 2022	Issuance of Amendment No. 269 License Amendment to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors	Safe Shutdown High winds Internal Flooding Probabilistic Risk Assessment FLEX Large early release frequency
ML22263A445	23 November 2022	Issuance of Amendment No. 268 to Revise Technical Specification 3.4.11 RCS Pressure and Temperature (P/T) Limits	Anticipated operational occurrence Hydrostatic Finite Element Analysis Pressure and Temperature Limits Report
ML22098A064	9 May 2022	Issuance of Amendment No. 267 to Adopt Technical Specifications Task Force (TSTF) 546, Revision 0, Revise APRM Channel Adjustment Surveillance Requirement	Surveillance Frequency Control Program Fuel cladding Power change
ML21293A164	13 January 2022	Issuance of Amendment No. 266 License Amendment Request to Remove License Condition 2.C.(34) and Revise License Condition 2.C.(35)	Aging Management License Renewal
ML21273A167	22 November 2021	Issuance of Amendment No. 265 Adoption of TSTF-439, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO	Safe Shutdown Time of Discovery Anticipated operational occurrence Surveillance Frequency Control Program Maintenance Rule Program Offsite Circuit
ML21053A316	3 March 2021	Issuance of Amendment No. 264 to Revise Technical Specification to Adopt Traveler TSTF-582, Revision 0, Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements	Water Inventory Control Surveillance Frequency Control Program Fuel cladding Offsite Circuit
ML21005A178	25 January 2021	Issuance of Amendment No. 263 to Revise Technical Specifications to Adopt TSTF-566, Revise Actions for Inoperable RHR Shutdown Cooling Subsystems Using the Consolidated Line Item Improvement Process	Surveillance Frequency Control Program
ML20302A026	15 December 2020	Issuance of Amendment No. 262 to Revise Technical Specifications to Adopt TSTF-564, Safety Limit MCPR	Reactor Vessel Water Level Anticipated operational occurrence Fuel cladding
ML20242A002	4 September 2020	Issuance of Amendment No. 261 Revise Technical Specification 3.8.7, Distribution Systems - Operating (Exigent Circumstances)	Safe Shutdown Anticipated operational occurrence Probabilistic Risk Assessment Surveillance Frequency Control Program
ML20135H084	29 June 2020	Issuance of Amendment No. 260 Revise Technical Specifications to Adopt TSTF-563, Revision 0, Revise Instrument Testing Definitions to Incorporate the Surveillance Frequency Control Program	Shutdown Margin Probabilistic Risk Assessment Surveillance Frequency Control Program Large early release frequency Pressure Boundary Leakage
ML20136A347	22 June 2020	Issuance of Amendment No. 259 Revise Technical Specifications Per TSTF-529, Revision 4, Clarify Use and Application Rules	Time of Discovery
ML20125A080	12 May 2020	Issuance of Amendment No. 258 Changes to Technical Specification Limiting Conditions for Operation 3.8.4 and 3.8.7 (Exigent Circumstances)	Safe Shutdown Anticipated operational occurrence Probabilistic Risk Assessment Emergency Lighting Surveillance Frequency Control Program Pandemic COVID-19
ML20113E984	4 May 2020	Issuance of Amendment No. 257 to Extend Implementation Date for Amendment No. 255 Control Room Air Conditioning System (Exigent Circumstances)	Operator Manual Action Pandemic Coronavirus COVID-19
ML19234A016	26 August 2019	Issuance of Amendment No. 254 Change to Technical Specification 3.8.7, Distribution Systems - Operating (Exigent Circumstances)	Safe Shutdown Anticipated operational occurrence Probabilistic Risk Assessment FLEX
ML19063A579	20 June 2019	Issuance of Amendment No. 253 Renewed Facility Operating License and Technical Specification Clean-Up	Shutdown Margin Water Inventory Control Surveillance Frequency Control Program Scram Discharge Volume Overtravel
ML18317A005	27 November 2018	Correction to Safety Evaluation Pages 5 and 24 for Amendment No. 199 Dated November 27, 2006 Related to Alternative Source Term	Water Inventory Control Squib Severe Accident Management Guideline
ML18283A125	8 November 2018	Issuance of Amendment No. 252 Update Appendix B to Renewed Facility Operating License to Incorporate the 2017 Biological Opinion
ML18255A350	30 October 2018	Issuance of Amendment No. 251 Revision to the Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control	Shutdown Margin Reactor Vessel Water Level High Radiation Area Stroke time Anticipated operational occurrence Water Inventory Control Post Accident Monitoring Hydrostatic Probabilistic Risk Assessment Surveillance Frequency Control Program Scram Discharge Volume Fuel cladding Pressure Boundary Leakage
ML18100A199	2 May 2018	Issuance of Amendment No. 249 Change to Technical Specification 3.5.1 ECCS - Operating (CAC No. MG0015; EPID L-2017-LLA-0277)	Surveillance Frequency Control Program
ML17290A127	30 October 2017	Columbia Generating Station - Issuance of Amendment No. 245 Re: Request for a One-Time Extension of the Residual Heat Removal Train A Completion Time (CAC No. MF8794; EPID L-2016-LLA-0016)
ML17188A230	28 August 2017	Issuance of Amendment No. 244 Emergency Action Level Scheme Change to Nuclear Energy Institute 99-01, Revision 6	High winds Ultimate heat sink Water Inventory Control Operating Basis Earthquake Spent Fuel Pool Instrumentation Earthquake Fuel cladding
ML17187A257	24 July 2017	Columbia Generating Station - Issuance of Amendment No. 243 Re: Adoption of Technical Specifications Task Force Traveler TSTF 545, Revision 3 (CAC No. MF8148)
ML053130319	5 July 2017	Current Facility Operating License NPF-21, Technical Specifications, Revised 11/01/2017
ML17131A071	27 June 2017	Columbia Generating Station - Issuance of Amendment No. 242 Re: Reduction of Reactor Steam Dome Pressure Specified in the Technical Specification 2.1.1, "Reactor Core SLs (Safety Limits)" (CAC No. MF8116)
ML17095A117	11 May 2017	Columbia Generating Station - Issuance Of Amendment No. 241 Re: Measurement Uncertainty Recapture (CAC No. MF8060)
ML17052A125	9 March 2017	Issuance of Amendment No. 240 Request to Modify Technical Specification Surveillance Requirement 3.4.3.1 and 3.4.4.1 Safety/Relief Valve Setpoint Lower Tolerance	Anticipated operational occurrence Probabilistic Risk Assessment Surveillance Frequency Control Program
ML16357A646	31 January 2017	Issuance of Amendment No. 239, Adopt Technical Specification Task Force (TSTF)-522, Revision 0, Revise Ventilation System Surveillance Requirements to Operate for 10 Hours Per Month	Surveillance Frequency Control Program
ML16253A025	3 November 2016	Issuance of Amendment No. 238, Adopt Technical Specification Task Force Traveler TSTF-425, Revision 3, Relocate Surveillance Frequencies to Licensee Control - RITSTF Initiative 5b	Reactor Vessel Water Level High Radiation Area Post Accident Monitoring Internal Flooding Hydrostatic Probabilistic Risk Assessment Squib Surveillance Frequency Control Program Large early release frequency Spiral reload Overtravel Pressure Boundary Leakage Offsite Circuit Backfit
ML16020A031	16 February 2016	Issuance of Amendment No. 237, Adopt TSTF-427, Revision 2, Allowance for Non Technical Specification Barrier Degradation on Supported System Operability, Using Consolidated Line Item Improvement Process	High winds Fire Barrier Internal Flooding Probabilistic Risk Assessment Large early release frequency Turbine Missile
ML15216A266	3 February 2016	Issuance of Amendment No. 236, Adoption of Technical Specification Task Force Traveler TSTF-423, Revision 1, Technical Specifications End States, as Part of Consolidated Line Item Improvement Process	Safe Shutdown Ultimate heat sink Probabilistic Risk Assessment Large early release frequency Offsite Circuit Backfit
ML15154A800	11 June 2015	Issuance of Amendment No. 235, Extension of Implementation Period for Amendment 232 Changing Technical Specification Table 3.3.1.1-1, Function 7, Scram Discharge Volume Water Level - High (Exigent Circumstances)	Commercial Grade Dedication Scram Discharge Volume
ML15098A254	11 May 2015	Issuance of Amendment No. 234, Request to Revise Technical Specification 2.1.1.2 to Change Safety Limit Minimum Critical Power Ratio Values	Reactor Vessel Water Level Anticipated operational occurrence Minimum Critical Power Ratio MELLLA
ML15076A122	15 April 2015	Issuance of Amendment No. 233, Request to Revise Technical Specification Surveillance Requirement 3.7.1.1 Related to the Ultimate Heat Sink	Safe Shutdown Ultimate heat sink Mission time Tornado Generated Missile Earthquake
ML15042A464	27 March 2015	Issuance of Amendment No. 231, Request to Revise License Condition Related to Approval of Revised Cyber Security Plan Implementation Schedule	Cyber Security Significance Determination Process
ML15063A010	27 March 2015	Issuance of Amendment No. 232, Request to Revise Technical Specification Table 3.3.1.1-1 Function 7, Scram Discharge Volume Water Level - High	Reactor Vessel Water Level Anticipated operational occurrence Incorporated by reference Scram Discharge Volume
ML15030A501	1 February 2015	Issuance of Amendment No. 230, Revise Technical Specifications for One-Time Extension of Completion Time Required Actions Related to Residual Heat Removal System B Inoperability (Emergency Circumstances)	Probabilistic Risk Assessment Large early release frequency
ML14335A189	7 January 2015	Redacted, Issuance of Amendment No. 229, Revise Emergency Core Cooling Systems Surveillance Requirements for Low Pressure Core Spray and Low Pressure Coolant Injection Pump Flows
ML14290A360	12 November 2014	Issuance of Amendment No. 228, Request to Adopt Technical Specification Task Force (TSTF)-535, Revision 0, Revise Shutdown Margin Definition to Address Advanced Fuel Designs	Shutdown Margin Anticipated operational occurrence Power change
ML14010A030	11 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
ML13317B623	31 January 2014	Redacted - Issuance of Amendment No. 226, Technical Specification Changes to Support Installation of GE Hitachi Power Range Neutron Monitoring System; Implementation of Arts/Mellla	Safe Shutdown Shutdown Margin Reactor Vessel Water Level Safety Limit Minimum Critical Power Ratio Half scram Offsite Dose Calculation Manual Anticipated operational occurrence Safe Shutdown Earthquake Post Accident Monitoring Operating Basis Earthquake Operator Manual Action Cyber Security Incorporated by reference Scram Discharge Volume Annual Radiological Environmental Operating Report Process Control Program Feedwater Controller Failure MELLLA Operability Determination Overtravel Fuel cladding
ML13030A457	1 March 2013	Correction to Amendment Letter and Safety Evaluation Pages for Amendment No. 225, Administrative and Editorial Changes to Technical Specifications Related to Change in Software and to Adopt TSTF-GG-05-01 Revision 2 Writer'S Guide	Cyber Security
ML12269A254	29 January 2013	Issuance of Amendment No. 225, Administrative and Editorial Changes to Technical Specifications Related to Change in Software and to Adopt TSTF-GG-05-01 Revision 2 Writer'S Guide
ML12089A043	22 May 2012	Issuance of Renewed Facility Operating License No. NPF-21 for Columbia Generating Station. Columbia Lr Ltr to Applicant	Safe Shutdown Time of Discovery Shutdown Margin Reactor Vessel Water Level High Radiation Area Ultimate heat sink Grab sample Offsite Dose Calculation Manual Post Accident Monitoring Hydrostatic Squib Cyber Security Scram Discharge Volume Annual Radiological Environmental Operating Report Process Control Program Safeguards Contingency Plan Spiral reload Overtravel License Renewal Pressure Boundary Leakage Offsite Circuit Fire Protection Program Unidentified leakage Overspeed trip
ML12089A090	22 May 2012	Issuance of Renewed Facility Operating License No. NPF-21 for Columbia Generating Station Renewed License	Safe Shutdown Cyber Security Safeguards Contingency Plan License Renewal Fire Protection Program
ML120810235	23 April 2012	Issuance of Amendment No. 224, Adoption of Technical Specification Task Force (TSTF)-514, Revision 3, Revise BWR Operability Requirements and Actions for RCS Leakage Instrumentation	Grab sample Pressure Boundary Leakage
ML120800078	30 March 2012	Issuance of Amendment No. 223, Administrative Changes to Facility Operating License to Modify Existing License Conditions or Delete Obsolete License Conditions	Safe Shutdown Reactor Vessel Water Level Ultimate heat sink License Renewal Turbine Missile Fire Protection Program

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