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MONTHYEARML14141A6402014-05-21021 May 2014
NRR E-mail Capture - NRC Pre-application Presentation for June 3, 2014 Meeting
Project stage: Request
ML14188C4402014-07-22022 July 2014
6/3/2014 Summary of Meeting with Luminant Generation Company LLC to Discuss Proposed Modifications to Technical Specifications to Install Backup Transformer XST1A for Comanche Peak, Units 1 and 2
Project stage: Meeting
2014-05-21
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Category:Meeting Summary
MONTHYEARML24019A0342024-01-30030 January 2024
Public Meeting Summary - 01-04-2024 - Comanche Peak LRA - Structures Monitoring Program
ML23255A0622023-09-18018 September 2023
Summary of August 7, 2023, Presubmittal Meeting with Vistra Operations Company LLC to Discuss the Proposed LAR to Relocate Refueling Operations TS 3.9.3, Nuclear Instrumentation, to the Technical Requirements Manual
ML23132A1572023-05-18018 May 2023
Summary of the License Renewal Environmental Audit (EPID Number: L-2022-LNE-004) (Docket Numbers 50-445 and 50-446)
ML23103A3002023-04-14014 April 2023
Summary of March 28, 2023, Presubmittal Meeting with Vistra Operations Company LLC to Discuss Proposed LAR to Take Exception to RG 1.81, Rev. 1, Shared Emergency and Shutdown Electric Systems for Multi-Unit Nuclear Power Plants,
ML23081A5232023-04-12012 April 2023
Public Scoping Meeting for Environmental Review of Comanche Peak Nuclear Power Plant (Cpnpp), Unit Nos. 1 and 2 License Renewal Application
ML23101A0432023-04-12012 April 2023
April 6, 2023, Summary of Meeting with Vistra Operations Company LLC to Discuss Proposed Alternative Regarding Inservice Testing of Various Thermal Relief Valves for Comanche Peak Nuclear Power Plant, Unit Nos. 1 and 2
ML22151A1842022-06-22022 June 2022
License Renewal Application May 26, 2022 Pre-submittal Public Meeting Summary
ML22147A0932022-06-0606 June 2022
2021 Annual Assessment Public Meeting Summary
ML22020A1782022-01-31031 January 2022
Summary of Conference Call Regarding the Fall 2021 Steam Generator Tube Inspections
ML21259A1492021-10-26026 October 2021
CPNPP, Unit Nos. 1 and 2 - Meeting Summary for Environmental Pre Submittal Meeting for Initial License Renewal Application on September 21, 2021
ML21259A1402021-10-0505 October 2021
Meeting Summary for Safety Pre Submittal Meeting for Initial License Renewal Application on September 21, 2021
ML21140A3892021-05-24024 May 2021
Riv Column 1 EOC 2020 Public Meeting Summary
ML21130A6832021-05-20020 May 2021
Summary of April 7, 2021, Presubmittal Meeting with Vistra Operations Company LLC Regarding the Proposed Exemption Request to Defer the Annual Force-On-Force Exercise for Comanche Peak Nuclear Power Plant, Unit Nos. 1 and 2
ML21124A0072021-05-10010 May 2021
Meeting Summary for Environmental Pre-Submittal Meeting for Initial License Renewal Application
ML21110A0602021-05-0707 May 2021
Summary of April 6, 2021, Meeting with Vistra Operations Company LLC to Defer the Biennial Emergency Planning Exercise for Comanche Peak Nuclear Power Plant, Unit Nos. 1 and 2
ML21099A2752021-04-15015 April 2021
Summary of Teleconference with Vistra Operations Company LLC to Discuss Proposed LAR to Adopt TSTF-505, Rev. 2, to Provide Risk-Informed Extended Completion Times for Comanche Peak, Units 1 and 2
ML20351A2592021-01-0505 January 2021
Summary of November 12, 2020, Teleconference with Vistra Operations Company LLC Proposed License Amendment Request for One-Time TS Revision to Replace Station Service Water Pump
ML20189A2832020-07-0707 July 2020
Summary of Region IV Annual Assessment Public Meeting
ML20115E3932020-04-30030 April 2020
Summary of April 6 and 7, 2020, COVID-19 Related Presubmittal Teleconferences with Vistra Operations Company LLC to Discuss Licensing Actions Supporting the Comanche Peak Unit No. 2 Spring 2020 Refueling Outage
ML20044D3052020-02-26026 February 2020
Summary of Teleconference with Vistra Operations Company, LLC to Discuss a Proposed License Amendment Request for Changes to Certain Emergency Action Levels for Comanche Peak Nuclear Power Plant, Unit Nos. 1 and 2 (EPID L-2020-LRM-000
ML19352E3172020-01-0808 January 2020
Summary of Teleconference with Vistra Operations Company LLC to Discuss a Proposed License Amendment Request to Change TS 3.8.1, AC Sources - Operating for Comanche Peak Nuclear Power Plant, Unit Nos. 1 and 2
ML19311C2122019-11-13013 November 2019
Summary of November 5, 2019, Teleconference with Vistra Operations Company LLC to Discuss a Proposed License Amendment Request to Change TS 3.8.1, Ac Sources - Operating for Comanche Peak Nuclear Power Plant, Unit Nos. 1 and 2
ML18275A3142018-10-16016 October 2018
Summary of September 17, 2018, Public Teleconference with Vistra Operations Company, LLC, on Proposed Changes to the Emergency Plan for Comanche Peak Nuclear Power Plant, Unit Nos. 1 and 2
ML17137A1742017-05-22022 May 2017
Summary of Conference Call Regarding the Spring 2017 Steam Generator Tube Inspections
ML16194A4962016-07-12012 July 2016
Summary of Annual Performance Assessment Meeting and Public Open House Regarding Comanche Peak Nuclear Power Plant 2015 Performance
ML15191A2282015-07-27027 July 2015
7/9/2015 Summary of Pre-submittal Meeting with Luminant Generation Company LLC to Discuss Submittal for License Amendment Request to Revise Technical Specification 3.8.1 for Comanche Peak Nuclear Power Plant, Units 1 and 2 (TACs MF6311 and
ML15191A2512015-07-0909 July 2015
July 9, 2015 Public Meeting: Comanch Peak Pre- Application Meeting, Emergency Diesel Generator Voltage and Frequency Technical Specification Changes
ML14188C4402014-07-22022 July 2014
6/3/2014 Summary of Meeting with Luminant Generation Company LLC to Discuss Proposed Modifications to Technical Specifications to Install Backup Transformer XST1A for Comanche Peak, Units 1 and 2
ML13067A0292013-03-15015 March 2013
2/28/13 - Summary of Meeting Via Conference Call with Luminant to Discuss Generic Safety Issue 191, Assessment of Debris Accumulation on PWR (Pressurized-Water Reactor) Sump Performance, for Comanche Peak, Units 1 and 2
ML12341A0812012-12-18018 December 2012
Summary of 11/15/12 Meeting with Luminant Generation Company LLC to Discuss Indirect License Transfers for Comanche Peak Nuclear Power Plant, Units 1 and 2
ML12332A3652012-12-18018 December 2012
Summary of Meeting with Luminant Generation Company LLC, to Discuss License Amendment Request for Approval of Revised Spent Fuel Criticality Analysis to Update Comanche Peak, Units 1 and 2, Technical Specifications (TAC Nos. ME8896-ME8897)
ML12283A3502012-10-25025 October 2012
Summary of 9/13/12 Meeting with Luminant Generation Company LLC to Discuss Proposed License Request for Approval of Revised Spent Fuel Criticality Analysis to Update Comanche Peak, Units 1 and 2, Technical Specifications
ML12229A5042012-09-19019 September 2012
8/6/2012 Summary of Conference Call with Luminant to Discuss Proposed License Amendment Request to Revise Technical Specification 3.8.1, AC Sources - Operating, to Support Installation of Backup Transformer at Comanche Peak, Units 1 and 2
ML12188A6972012-07-18018 July 2012
6/26/12 Summary of Meeting with Luminant Generation Company LLC to Discuss Proposed License Amendment Request to Revise TS 3.8.1, AC Sources - Operating, to Support Installation of Backup Transformer at Comanche Peak, Units 1 and 2 (TAC ME8
ML12072A3432012-03-12012 March 2012
3/6/2012 Summary of Meeting with Luminant Generation Company, LLC Regarding Planned Modifications to Resolve Fire Protection Circuit Interactions
ML1125904822011-10-14014 October 2011
Summary of Meeting with Luminant to Discuss Comanche Peak, Units 1 and 2, Proposed Request to Adopt Risk-Informed Technical Specification Task Force Initiative 8a, Relocate LCOs for RPS and ESFAS Instrumentation to Licensee Control
ML1114001482011-05-23023 May 2011
Summary of Conference Call on 4/14/2011 with Nrr/Dci/Csgb Regarding the Spring 2011 Steam Generator Tube Inspections
ML1114003142011-05-19019 May 2011
Summary of Public Meeting with Luminant Generation Company on Comanche Peak Nuclear Power Plant, Units 1 and 2, to Discuss 2010 End of Cycle Performance Assessment
ML1108004622011-03-28028 March 2011
3/17/11 Summary of Closed Meeting with Luminant Generation Company Via Conference Call to Discuss Generic Request for Additional Information Pertaining to Its Cyber Security Submittal
ML1101908002011-01-18018 January 2011
Summary of Meeting with Luminant Generation Company LLC Regarding a Preliminary Finding with Moderate Safety Significance
ML1034205662010-12-22022 December 2010
Memo Summary of the November 3, 2010, Public Meeting with the United States - Advanced Pressurized Water Reactor Design Centered Working Group to Discuss Inspections, Test, Analyses, and Acceptance Criteria, Conceptual Design Information.
ML1016501752010-06-21021 June 2010
6/10/10 Summary of Closed Meeting with Luminant Generation Company, LLC to Discuss Comanche Peak Nuclear Power Plant, Units 1 and 2 Implementation Plan/Information Pertaining to Defensive Strategy for Cyber Security Submittal
ML1013906402010-05-19019 May 2010
Summary of Public Meeting with Luminant Generation Company on Comanche Peak Nuclear Power Plant, Units 1 and 2, 2009 Performance
ML0924401642009-09-14014 September 2009
Meeting Summary, Pre-Application Meeting on with Luminant Generation Company LLC to Dicuss Future Amendment Request to Revise Comanche Peak Units 1 and 2 Startup Transformer Completion Times
ML0919705782009-07-31031 July 2009
Summary of Category 1 Meeting with Luminant Generation Company LLC, Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors
ML0918303012009-07-0202 July 2009
Summary of Annual Performance Assessment Meeting for Comanche Peak Steam Electric Stations
ML0729204682007-10-29029 October 2007
09/25/2007, Summary of Meeting Between the U.S. Nuclear Regulatory Commission Staff and Strategic Teaming and Resource Sharing Representatives to Discuss License Renewal Activities
ML0720005052007-07-31031 July 2007
Summary of Meeting with Txu Generation Company LP to Discussed Regarding the Plans for Methodology Transition and Power Uprate
ML0717200702007-06-20020 June 2007
Summary of Meeting with Txu Power Regarding Comanche Peak Steam Electric Stations End-of-Cycle Assessment for 2006
ML0612204362006-05-18018 May 2006
Attachment 3 to Comanche Peak Conference Call
2024-01-30
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 July 22, 2014 LICENSEE: Luminant Generation Company LLC FACILITY: Comanche Peak Nuclear Power Plant, Units 1 and 2
SUBJECT:
SUMMARY
OF JUNE 3, 2014, PRE-LICENSING PUBLIC MEETING WITH LUMINANT GENERATION COMPANY LLC TO DISCUSS THE PROPOSED LICENSE AMENDMENT REQUEST FOR A ONE-TIME EXTENSION OF COMPLETION TIME FOR LCO 3.8.1 FOR THE INSTALLATION OF AN ALTERNATE TRANSFORMER FOR OFFSITE POWER SOURCE (TAC NOS.
MF3909 AND MF3910)
On June 3, 2014, a public meeting was held between the U.S. Nuclear Regulatory Commission (NRC), and representatives of Luminant Generation Company LLC (Luminant, the licensee), at NRC Headquarters, Rockville, Maryland. The meeting notice and agenda, dated May 2, 2014, is located in the Agencywide Documents Access and Management System (ADAMS) under Accession No. ML14122A089. The purpose of the meeting was to discuss the proposed license amendment request (LAR) for a one-time extension of the Completion Time (CT) for Limiting Conditions for Operation (LCO) 3.8.1, "AC [Alternating Current] Sources- Operating," to complete the plant modification for installation of an alternate transformer for offsite AC power sources at Comanche Peak Nuclear Power Plant (CPNPP), Units 1 and 2.
A list of meeting attendees is provided in Enclosure to this meeting summary.
Meeting Summary The discussion was based on the following meeting materials/handouts:
- Slides provided by Luminant, "Comanche Peak - Modification of Offsite Power Supplies to Improve Reliability," dated June 3, 2014 (ADAMS Accession No.ML14141A640)
Background
The NRC previously issued Amendment No. 160 for Facility Operating Licenses NPF-87 and NPF-89 by letter dated September 18, 2013 (ADAMS Accession No. ML13232A143), to revise Technical Specification (TS) 3.8.1 to extend the CT for Required Action A.3, "Restore required offsite circuit to OPERABLE status," from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 14 days (to be used twice) while completing the plant modification to install transformer XST1A. The licensee completed a portion of the modification and used only one of the approved CT extensions. During the installation, the licensee inadvertently cut the wrong offsite power cable resulting in total loss of offsite power to both units and efforts to complete the plant modification were terminated.
The purpose of this meeting was for the licensee to discuss the following:
- Provide a background of the plant modification, including the activities to be performed under the proposed LAR.
- Describe the cut-cable event, root cause analysis, and corrective actions implemented to preclude reoccurrence.
- Describe the strategies for the proposed defense-in-depth risk management and for completing the modifications.
- Schedule for the submittal of the proposed LAR.
Results of Discussion:
- The NRC staff asked how long it normally takes to transfer the offsite power from the main start-up (ST) transformer to the alternate ST transformer. The licensee stated that, based on past experience, all actions to transfer the offsite power from main to alternate transformer can be completed in about 12 to 14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br />.
- The NRC staff asked why the ST transformers XST2 and XST2A serving Unit 1 did not need Tap Boxes but ST transformers serving Unit 2 did. The licensee stated that the cables for Unit 2 were too short and that the Tab boxes were needed to extend the length of the cables.
- The NRC staff asked about the status of the corrective actions as a result of the cut-cable event. The licensee stated that majority of the corrective actions have been completed and confirmed that all remaining corrective actions will be completed before implementing the proposed modification.
- The NRC asked if the proposed LAR will be based on a risk-informed approach.
The licensee stated that the proposed LAR will be based on deterministic principles and not submitted as a risk-informed licensing action.
- The licensee stated that the proposed LAR will be submitted to the NRC staff for review by July 15, 2014, and would request approval by January 15, 2015, so that it can implement the modification in March 2015.
- The NRC staff expressed concern about the tight schedule and requested that the licensee expedite the submittal.
No Public Meeting Feedback Forms were received for this meeting.
Please direct any inquiries to me at (301) 415-3016, or balwant.singal@nrc.gov.
Sincerely,
~~cg~~
Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv
LIST OF ATTENDEES MEETING WITH LUMINANT GENERATION COMPANY LLC REGARDING ONE-TIME EXTENSION OF LIMITING CONDITION FOR OPERATION 3.8.1 COMANCHE PEAK NUCLEAR POWER PLANT. UNITS 1 AND 2 DOCKET NOS. 50-445 AND 50-446 JUNE 3. 2014 Name Title Organization Vijay Goel Electrical Engineer NRR Khadijah Hemphill Reactor Systems Engineer NRR Jacob Zimmerman Chief, Electrical Engineering Branch NRR Peter Snyder General Engineer NRR Balwant Singal Senior Project Manager NRR Tim Hope Manager, Regulatory Affairs Luminant Generation Company LLC (Luminant)
Todd Evans Project Manager Luminant Tamera Ervin- Walker Principal Engineer, Nuclear Luminant Nathan Larson Risk & Reliability Engineer Luminant Tom McCool Vice President Engineering and Luminant Support Enclosure
ML14188C440 OFFICE NRRIDORULPL4-1/PM N RRIDORULPL4-1/PM NRR!DORULPL4-1/LA NRRIDSS/STSB/BC NAME SGoetz BSingal JBurkhardt REIIiott DATE 7/9/14 7/9/14 7/9/14 7/10/14 OFFICE NRRIDE/EEEB/BC N RRIDORULPL4-1/BC NRR!DORLILPL4-1/PM NAME JZimmerman MMarkley (PBamford for) BSingal DATE 7/14/14 7/22/14 7/22/14
