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| Issue date | Title | Topic | |
|---|---|---|---|
| GO2-23-105, Licensing Basis Document Update and Biennial Commitment Change Report | 12 December 2023 | Licensing Basis Document Update and Biennial Commitment Change Report | Aging Management License Renewal |
| ML21349B353 | 15 December 2021 | Attachment 4: Technical Specification Bases, Revision 124 | |
| ML21349B338 | 15 December 2021 | 10 CFR 50.71 Maintenance of Records Licensing Basis Document Update and Biennial Commitment Change Report | Aging Management License Renewal |
| ML21349B352 | 15 December 2021 | Attachment 4: Licensee Controlled Specifications, Revision 122 | Safe Shutdown Unanalyzed Condition Time of Discovery High winds Reactor Vessel Water Level Ultimate heat sink Grab sample Fire Barrier Safe Shutdown Earthquake Post Accident Monitoring Coatings Met Tower Operator Manual Action Functionality Assessment FLEX B.5.b Missed surveillance Scram Discharge Volume Excess Flow Check Valve Operability Determination Battery sizing Earthquake Turbine Missile Operability Assessment Power Uprate Measurement Uncertainty Recapture |
| GO2-21-041, Report of Changes or Errors in Emergency Core Cooling System Loss of Coolant Accident Analysis Models Pursuant to 10 CFR 50.46 | 15 March 2021 | Report of Changes or Errors in Emergency Core Cooling System Loss of Coolant Accident Analysis Models Pursuant to 10 CFR 50.46 | |
| GO2-20-039, Energy Northwest to EFSEC, Fish Entraiment Characterization Final Report | 26 February 2020 | Energy Northwest to EFSEC, Fish Entraiment Characterization Final Report | Biofouling |
| GO2-19-136, Seismic Probabilistic Risk Assessment Response to NRC Request for Information Pursuant to 10 CFR 50.54(F)Regarding Recommendation 2.1 of the Near-Term Task Force (NTTF) Review of Insights from the Fukushima Dai-Ichi | 26 September 2019 | Seismic Probabilistic Risk Assessment Response to NRC Request for Information Pursuant to 10 CFR 50.54(F)Regarding Recommendation 2.1 of the Near-Term Task Force (NTTF) Review of Insights from the Fukushima Dai-Ichi | Safe Shutdown Ultimate heat sink Mission time Internal Flooding Probabilistic Risk Assessment FLEX Fukushima Dai-Ichi Seismically rugged Scram Discharge Volume Large early release frequency Severe Accident Management Guideline Earthquake |
| GO2-19-100, Report of Full Compliance with Phase 1 and Phase 2 of June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order No. EA-13-109) | 20 August 2019 | Report of Full Compliance with Phase 1 and Phase 2 of June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order No. EA-13-109) | |
| GO2-19-035, Energy Northwest to Energy Facility Site Evaluation Council, Columbia Generating Station Fish Entrainment Study Interim Report | 7 February 2019 | Energy Northwest to Energy Facility Site Evaluation Council, Columbia Generating Station Fish Entrainment Study Interim Report | Biofouling |
| ML18285A450 | 18 April 2018 | 1175ENWCGS, Revision 00, Computational Fluid Dynamics Analysis of Perforated Intake Screens at Columbia Generating Station. | |
| GO2-17-139, Technical Specifications Section 5.6.4 Post Accident Monitoring Instrumentation Report | 3 August 2017 | Technical Specifications Section 5.6.4 Post Accident Monitoring Instrumentation Report | Post Accident Monitoring |
| ML17072A036 | 10 March 2017 | Endangered Species Act Section 7(a)(2) Biological Opinion, and Magnuson-Stevens Fishery Conservation Act Essential Fish Habitat Response for Renewing the Operating License for Columbia Generating Station, Richland, Washington | Grab sample Offsite Dose Calculation Manual Incorporated by reference Annual Radiological Environmental Operating Report License Renewal |
| ML16337A109 | 7 December 2016 | Interim Staff Response to Reevaluated Flood Hazards Submitted in Response to 10 CFR 50.54(f) Information Request; Flood-Causing Mechanism Reevaluation | FLEX Fukushima Dai-Ichi |
| ML16333A094 | 7 December 2016 | Current Design Basis Flood Hazards for Use in the MSA | |
| GO2-16-104, LAR to Change EAL Scheme | 28 July 2016 | LAR to Change EAL Scheme | |
| ML16214A372 | 28 July 2016 | Summary of Radiological Calibration Turbine Building Ventilation System Exhaust Monitor TEA-RIS-13 | |
| GO2-16-024, Technical Specifications Section 5.6.4 Post Accident Monitoring Instrumentation Report | 25 January 2016 | Technical Specifications Section 5.6.4 Post Accident Monitoring Instrumentation Report | Post Accident Monitoring |
| GO2-16-001, Independent Spent Fuel Storage Installation, (ISFSI) - Transmittal of the Biennial 50.59/72.48 Report | 20 January 2016 | Independent Spent Fuel Storage Installation, (ISFSI) - Transmittal of the Biennial 50.59/72.48 Report | Half scram Post Accident Monitoring Cyber Security |
| ML15355A486 | 21 December 2015 | Revision 87 to Licensee Controlled Specifications (LCS) | Safe Shutdown Unanalyzed Condition Time of Discovery Reactor Vessel Water Level High Radiation Area Grab sample Fire Barrier Safe Shutdown Earthquake Post Accident Monitoring Coatings Met Tower Operating Basis Earthquake Operator Manual Action Functionality Assessment Missed surveillance Scram Discharge Volume Excess Flow Check Valve Operability Determination Battery sizing Earthquake Turbine Missile Grace period Operability Assessment |
| GO2-15-110, Enclosure 2, Revision 2 to 001N6043.5-NP, Energy Northwest Columbia Generating Station Jet Pump 17/18 Riser Evaluation at 106% Rated Core Flow (115 Mlbs/Hr), Non-Proprietary | 31 August 2015 | Enclosure 2, Revision 2 to 001N6043.5-NP, Energy Northwest Columbia Generating Station Jet Pump 17/18 Riser Evaluation at 106% Rated Core Flow (115 Mlbs/Hr), Non-Proprietary | Non-Destructive Examination Safe Shutdown Earthquake MELLLA Earthquake EVT-1 Flow Induced Vibration |
| ML14335A158 | 25 March 2015 | Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-13-109 (Severe Accident Capable Hardened Vents) | Safe Shutdown Safe Shutdown Earthquake FLEX Tornado Generated Missile Fukushima Dai-Ichi Design basis earthquake Containment Hardened Vent Battery sizing Earthquake Scaffolding |
| GO2-15-045, Seismic Hazard and Screening Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(F) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident | 12 March 2015 | Seismic Hazard and Screening Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(F) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident | Unanalyzed Condition Safe Shutdown Earthquake Probabilistic Risk Assessment Operating Basis Earthquake Fukushima Dai-Ichi License Renewal Earthquake Seismic Walkdown Report |
| GO2-15-039, TIA XXXX-XX, Tower Makeup System Unresolved Issue | 6 March 2015 | TIA XXXX-XX, Tower Makeup System Unresolved Issue | Safe Shutdown Ultimate heat sink Tornado Missile Safe Shutdown Earthquake Operating Basis Earthquake Tornado Missile Protection Earthquake Backfit |
| ML14176A961 | 24 June 2014 | Submittal of Non-Proprietary BWROG Technical Product, BWROGTP-11-006 - ECCS Containment Walkdown Procedure, Rev 1 (January 2011), as Formally Requested During the Public Meeting Held on April 30, 2014 | Fire Barrier Coatings Foreign Material Exclusion |
| ML14064A311 | 11 March 2014 | Staff Assessment of the Seismic Walkdown Report Supporting Implementation of Near-Term Task Force Recommendation 2.3 Related to Fukushima Dai-Ichi Nuclear Power Plant Accident | Unanalyzed Condition Safe Shutdown Earthquake Fukushima Dai-Ichi Earthquake |
| ML13337A266 | 29 January 2014 | Interim Staff Evaluation and Audit Report Related to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) | Safe Shutdown High winds Reactor Vessel Water Level Ultimate heat sink Tornado Missile Safe Shutdown Earthquake Internal Flooding Operating Basis Earthquake Emergency Lighting Incorporated by reference FLEX B.5.b Tornado Generated Missile Fukushima Dai-Ichi Containment Hardened Vent Frazil ice Battery sizing Earthquake Hardened vent GOTHIC |
| ML14037A175 | 21 January 2014 | Independent Spent Fuel Storage Installation, Biennial Commitment Changes and 50.59/72.48 Report | Ultimate heat sink Anticipated operational occurrence Temporary Modification Fuel cladding |
| ML13357A322 | 21 December 2013 | Mega-Tech Services, LLC, Technical Evaluation Report Regarding the Overall Integrated Plan for Columbia Generating Station, TAC No.: MF0796 | Safe Shutdown High winds Reactor Vessel Water Level Ultimate heat sink Tornado Missile Safe Shutdown Earthquake Internal Flooding Operating Basis Earthquake Emergency Lighting Incorporated by reference FLEX B.5.b Tornado Generated Missile Fukushima Dai-Ichi Containment Hardened Vent Frazil ice Battery sizing Earthquake Hardened vent GOTHIC |
| GO2-13-151, NEDO-33813, Rev. 2, Technical Specification Change Support for Rhr/Lpci and LPCS Flow Rate. Long-Term LOCA Containment Response and ECCS/Non-LOCA Evaluations. | 30 September 2013 | NEDO-33813, Rev. 2, Technical Specification Change Support for Rhr/Lpci and LPCS Flow Rate. Long-Term LOCA Containment Response and ECCS/Non-LOCA Evaluations. | Safe Shutdown Anticipated operational occurrence MELLLA Power Uprate |
| ML13241A264 | 12 August 2013 | Enclosure 2 - Columbia Generating Station, Final Seismic Walkdown Summary Report (Public Version) | Safe Shutdown Safe Shutdown Earthquake Probabilistic Risk Assessment Locked High Radiation Area Scaffolding |
| ML13108A219 | 4 April 2013 | RWCU Regenerative Heat Exchanger Piping Repair Patch Analysis | Finite Element Analysis |
| ML13015A273 | 31 December 2012 | NEDO-33698, Rev 2, Columbia Generating Station Power Range Neutron Monitoring System Design Report on Computer Integrity, Test and Calibration, and Fault Detection | Temporary Modification |
| ML13015A272 | 31 December 2012 | NEDO-33685, Rev 2, Digital I&C-ISG-06 Compliance for Columbia Generating Station Numac Power Range Neutron Monitoring Retrofit Plus Option III Stability Trip Function. | Anticipated operational occurrence Commercial Grade Dedication MELLLA |
| ML12328A079 | 30 November 2012 | NEDO-33789, Revision 0, Numac Power Range Neutron Monitoring Components 268X1331TCG001, 268X1332TCG001, G002 268X1333TCG001, Qualification Summary for Energy Northwest (Enw) Columbia Generating Station (Cgs), Attachment 5 | |
| ML12328A078 | 31 October 2012 | NEDO-33751, Revision 3, Columbia Generating Station Power Range Neutron Monitoring System Reliability Analysis, Attachment 3 | |
| GO2-12-165, Initial Seismic Walkdown Summary Report, Enclosure 2 | 30 October 2012 | Initial Seismic Walkdown Summary Report, Enclosure 2 | Safe Shutdown Unanalyzed Condition Safe Shutdown Earthquake Probabilistic Risk Assessment Fukushima Dai-Ichi B.5.b Mitigating Strategies Earthquake Scaffolding |
| GO2-12-105, Submittal of Phase 2 Information in Support of License Amendment Request to Change Technical Specifications in Support of Prnm /Arts/Mellla Implementation; NEDO-33750, NEDO-33753; NEDO-33754: NEDO-33755; & NEDO-33758 | 31 July 2012 | Submittal of Phase 2 Information in Support of License Amendment Request to Change Technical Specifications in Support of Prnm /Arts/Mellla Implementation; NEDO-33750, NEDO-33753; NEDO-33754: NEDO-33755; & NEDO-33758 | MELLLA Earthquake |
| ML12102A238 | 13 June 2012 | Memo Conclusion of Informal Section 7 Consultation with U.S. Fish and Wildlife Service for Columbia Generating Station and Section 7 Consultation Report | License Renewal |
| ML121600017 | 11 June 2012 | Review of 60-Day Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 9.3 of the Near Term Task Force Review of Fukushima Dai-ichi Accident | Fukushima Dai-Ichi Earthquake |
| ML12101A395 | 4 May 2012 | Conclusion of Efh Consultation for Columbia Generating Station and Efh Consultation Report | License Renewal |
| ML12040A077 | 31 January 2012 | NEDO-33697, Revision 1, Columbia Generating Station Power Range Neutron Monitoring System Design Analysis Report | MELLLA |
| ML12040A074 | 31 January 2012 | NEDO-33685, Revision 1, Digital I&C-ISG-06 Compliance for Columbia Generating Station Numac Power Range Neutron Monitoring Retrofit Plus Option III Stability Trip Function | Anticipated operational occurrence Commercial Grade Dedication MELLLA |
| ML12040A076 | 31 January 2012 | NEDO-33694, Revision 1, Columbia Generating Station Power Range Neutron Monitoring System Diversity and Defense-in-Depth (D3) Analysis | Shutdown Margin Anticipated operational occurrence MELLLA |
| ML12040A080 | 31 January 2012 | NEDO-33507, Revision 1, Columbia Generating Station Aprm/Rbm/Technical Specifications / Maximum Extended Load Line Limit Analysis (Arts/Mellla) | Safe Shutdown Safety Limit Minimum Critical Power Ratio Anticipated operational occurrence Safe Shutdown Earthquake Feedwater Controller Failure MELLLA Earthquake Fuel cladding Power change Coast down GOTHIC |
| ML12040A079 | 31 January 2012 | NEDO-33698, Revision 1, Columbia Generating Station Power Range Neutron Monitoring System Design Report on Computer Integrity, Test and Calibration, and Fault Detection. Enclosure 2, Attachment 14 to List of Commitments and Enclosure 3 Are | Anticipated operational occurrence Commercial Grade Dedication Temporary Modification MELLLA Fuel cladding |
| ML12040A075 | 30 November 2011 | NEDO-33690, Revision 0, Columbia Generating Station Power Range Neutron Monitoring System Response Time Analysis Report | MELLLA |
| GO2-11-180, Response to Request for Additional Information Regarding the License Renewal Application | 10 November 2011 | Response to Request for Additional Information Regarding the License Renewal Application | Coatings Aging Management |
| ML112700069 | 26 September 2011 | Enclosure 2, Mfn 10-245 R4, Description of the Evaluation and Surveillance Recommendations for BWR/2-5 Plants | Shutdown Margin Anticipated operational occurrence Safe Shutdown Earthquake Probabilistic Risk Assessment Operating Basis Earthquake Channel-control blade interference Scram Discharge Volume Earthquake |
| GO2-11-072, 10 CFR 50.46 Report of Changes or Errors in ECCS LOCA Analysis Models | 5 April 2011 | 10 CFR 50.46 Report of Changes or Errors in ECCS LOCA Analysis Models | |
| ML102440342 | 19 August 2010 | Columbia Generating Station - Response to Request for Additional Information License Renewal Application | Safe Shutdown Fire Barrier Coatings VT-2 Zebra Mussel Aging Management Biofouling Fire Protection Program |