|
---|
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] |
Text
II t JKUTI _,'EST February 3, 2014 G02-14-014 NMx Javdk'+cokoma Gernov Staon P.O. Bk06 8r. PEO4.WA 6835466 Ph.
I F. 0O.377.4150 10 CFR 50.54(f)U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Subject
References:
COLUMBIA GENERATING STATION, DOCKET NO. 60-3O7 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING NRC BULLETIN 201201 1) NRC Bulletin 2012-01, "Design Vulnerability In Electrc Power System," dated July 27, 2012 2) Letter, G02-12-152, dated October 25, 2012, AL Javornk (Energy Northwest) to NRC, "Response to NRC Bulletin 2012-01, Design Vulnerability in Electric Power System" 3) Letter dated December 20,2013, MG Evans (NRC) to ME Reddemann (Energy Northwest), "Request for Additional Information Regarding Response to Bulletin 2012-01, Design Vulnerability in Electric Power System" 4) Letter dated October 9, 2013, AR Pietrangelo (NEI) to MA Satodus (NRC), "Industry Initiative on Open Phase Condition"
Dear Sir or Madam:
By Reference 1, NRC requested that licensees submit information confirming compliance with 10 CFR 50.55a(h)(2), 10 CFR 50.55a(h)(3), and Appendix A to 10 CFR 50, General Design Criteria 17 or principal design criteria specified in the updated final safety analysis report and address the two issues related to their electric power systems. Reference 2 documents Energy Northwest's response.Via Reference 3, the Nuclear Regulatory Commission (NRC) requested additional information related to the Energy Northwest submittal.
Transmitted herewith in Attachment I is the response to the request for additional information (RAI).As a result of Reference 4, Energy Northwest intends to follow the industry schedule for the open phase condition initiative.
Attachment 2 provides additional details regarding this commitment.
Should you have any questions or require additional information regarding this matter, please contact Ms. LL Williams, Licensing Supervisor, at (509) 377-8148.
RESPONSE TO REQUEST FOR ADDITlONAL INFORMATION REGARDING NRC BULLETIN 201201 Page2 1 declare under penalty of pejury that the foregoing is true and correct. Executed on the date of this eter.Respectfuly, AJavorlk vice Presdent, Enginerin Aftchments:
as sated cc: NRC Region IV fAmftat NRC NRR Project Manager NRC Senior PmWWhpde9W AJ Rapac; -BPA/1 399 (w/o Enclosr 1)WA Hordn -Wkin & Strawn (wo Enclosure
- 1)
I RESPONSE TO REMOET FOR ADDITONAL INFORMATION REGARDN NRC BULLETIN 201201 Attachment 1 Page 1 of 2 1. Provide a summary of all interim corrective actions that have been taken since the January 30,2012, event at Byron Station, Unit 2, to ensure that plant operators can promptly diagnose and respond to open phase conditions on the ofute power circuits for Class-1 E vital buses until permanent corrective actions are completed.
Based upon an Operating Exerience (OE) evaluation of the applicabiity of the Byron Unusual Event to Columbia Generating Station (Columbia) the following interim correction actions have been taken to ensure plant operators can promptly diagnose and respond to open phase conditions (OPC): Interim Corrective Actions o On shift crews were briefed on means of identifying OPC with existing plant monitoring equipment and that operator manual action may be required to respond to OPC.o Shiftly monitoring of voltage on Individual phases of offsite power sources was Increased from one to three times per shift.o Visual survey of condition of phase conductors on offslte power sources added to operator rounds.o The annunciator response procedure for undervoltage alarms was revised to include additional actions to check for OPC in theý offite power system.o The abrional electrical grid procedure was revised to provide actions In response to OPC in offsite power sources including enabling trip logic if the resulting voltage from OPC as sensed at the engineered safety feature (ESF) 4.16kV bus with off-Ite power connected is below the relay setting.o The Byron event was included In operator continuing training..
o Additional voltage alarm modules were installed to alert operators of gross voltage unbalance or loss of phase at the point of Interconnection by providing this input to the existing main control room trouble alarms.o The Division 3 ESF 4.16 kV switchgear undervoltage monitoring was augmented from monitoring two phases to monitoring all three phases of the safety bus in the degraded voltage protection system to aid In detecting degraded voltage on a single phase. Similar monitoring already existed on the Division I and 2 ESF 4.16 kV switchgear.
AFPONSE TO REIJUST FOR ADDITIONAL ON MT1ON REGAROING NRC SULLUEN 2012401 Attachment 1 Page 2 of 2 2. Provide a status and schedule for completion of plant design changes and modifications to resolve issues with an open phase of electric power.Clumb's strategy for resolving the open phase event vulneabity In the long term is based upon providing defense-i-depth features for protecting the 4.1 kV ESF switchgear bus from the effects of an open phase condition in the offsite power interconnections to the station which are part of the general design criteria (GDC)17 offslte power circuits Status o Columbia and its transmission operator are investigating options being researched by several vendors to detect OPC faults.o Columbia is engaged in the development of the NEI OPC Guidance Document, as well as development of enhancements to software tools being used to analyze OPC faults.o Columbia is actively monitoring industry preliminary design and testing activities and will conduct ite testing to ensure the design selected for Columbia will provide accurate detectioný without oompromising nuclear safety.o Columbia has commissioned screening studies to determine vulnerability and consequences of OPC faults.* Schedule o Columbia is committed to the generic schedule provided in the Industry OPC initiative outlined in the Nuclear Energy Institute (NEI) letter to the Nuclear Regulatory Commission (NRC) dated October 9,2013, Industry Initiative on Open Phase Condition'.
o Columbia Intends to meet the milestones of this schedule with one exception; a deviation to the December 2016 implementation milestone will be required to accommodate outage scheduling.
Additional deviations may be required due to software and hardware availability, manufacturer's delivery capabilities, licensing delays, etc.o Any additional deviations from the Industry OPC Initiative schedule will be documented through the forthcoming deviation/exemption process addressed in the NEI OPC Guidance Document.
b ~, RESPONSE TO REQUEST FOR ADDITlONAL IFORMATiN REGARDOING NRC BULLETIN 2012-01 Attachment 2 Page 1of 1 List of Commitment.
The following table identifies the regulatory commitments in this document.
Any other statements in this submittal, including intended or planned actions, are provided for information purposes and are not considered to be regulatory commitments.
CommitmentScheduled Date Energy Northwest will follow the milestone schedule established in the NEI Letter to NRC, "Industry Initiative on Open Phase Condition", dated October 9, 2013 with the December 31, 2017 exception of the December 31, 2016 milestone for implementation of design changes.Energy Northwest will Implement design changes associated with the Open Phase Condition Initiative by the completion of Pror to startup from refueling outage 23 (R-23). R-23 Dicusslon:
Energy Northwest's project plan to meet this commitment is scheduled to support final equipment installation in the Spring 2017 (R-23) refueling outage. Field installation activities will complete May 2017 with a monitoring period to follow. Completion of any design adjustments identified due to monitoring and enabling all "active" actuation features will be completed no later than December 31, 2017.Any additional deviations from the Industry OPC Initiative schedule will be documented through the forthcoming deviation/exemption process addressed in the NEI OPC Guidance Document.