ML15148A677

Nuclear Regulatory Commission Plan for the Audit of Luminant Generation Company, Llc'S Flood Hazard Reevaluation Report Submittal Relating to the Near-Term Task Force Recommendation 2.1 - Flooding for Comanche Peach Nuclear Power Plant

ML15148A677
Person / Time
Site:	Comanche Peak
Issue date:	06/11/2015
From:	Minarik A J Japan Lessons-Learned Division
To:	Flores R Luminant Generation Co
Minarik A J, NRR/JLD, 415-6185
References
TAC MF1099, TAC MF1100
Download: ML15148A677 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Rafael Flores Senior Vice President and Chief Nuclear Officer Attention: Regulatory Affairs Luminant Generation Company, LLC P.O. Box 1002 Glen Rose, TX 76043 June11,2015 SUBJECT: NUCLEAR REGULATORY COMMISSION PLAN FOR THE AUDIT OF LUMINANT GENERATION COMPANY, LLC.'S FLOOD HAZARD REEVALUATION REPORT SUBMITTAL RELATING TO THE NEAR-TERM TASK FORCE RECOMMENDATION 2.1-FLOODING FOR COMANCHE PEAK NUCLEAR POWER PLANT, UNITS 1AND2 (TAC NOS. MF1099 AND MF1100) Dear Mr. Flores: This letter documents the U.S. Nuclear Regulatory Commission (NRC) staff's plan to perform a regulatory audit of Luminant Generation Company, LLC's (the licensee) supporting calculations for the Flood Hazard Reevaluation Report (FHRR) submittal related to the Near-Term Task Force Recommendation 2.1, Flooding for Comanche Peak Nuclear Power Plant, Units 1 and 2 (Comanche Peak). This technical audit will be performed consistent with NRC Office of Nuclear Reactor Regulation, Office Instruction LIC-111, and "Regulatory Audits," dated December 29, 2008 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML082900195). The audit will be conducted over multiple sessions, as needed, and the NRC staff will develop an audit summary report to document its observations and conclusions within 90 days of the final audit session. The audit will provide the NRC staff with a better understanding of the Comanche Peak FHRR, which was submitted by letter dated March 12, 2013 (ADAMS Accession No. ML 13074A058). Specifically, the audit will provide the NRC with a better understanding of the analyses of the flooding hazards presented in the Comanche Peak FHRR. The audit is intended to support completion of the staff's review of the FHRR and the subsequent issuance of a Staff Assessment. The enclosed audit plan outlines the process that will allow the NRC staff to identify additional information potentially necessary for licensees to supplement their FHRRs and resolve potential technical concerns. The details of this audit have been discussed with Mr. Carl Corbin of your staff.

R. Flores -2 -If you have any questions, please contact me at (301) 415-6185 or by e-mail at Anthony.Minarik@nrc.gov. Docket Nos.: 50-445 and 50-446 Enclosure: Audit Plan cc w/encl: Distribution via Listserv Sincerely, Anthony J. Minarik, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation NRC PLAN FOR THE AUDIT OF LUMINANT GENERATION COMPANY, LLC'S NUCLEAR OPERATIONS. INC.'S FLOOD HAZARD REEVALUATION REPORT SUBMITTAL RELATING TO THE NEAR-TERM TASK FORCE RECOMMENDATION 2.1-FLOODING FOR COMANCHE PEAK NUCLEAR POWER PLANT, UNITS 1 AND 2 BACKGROUND AND AUDIT BASIS: By letter dated March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information to all power reactor licensees and holders of construction permits in active or deferred status, pursuant to Title 10 of the Code of Federal Regulations (10 CFR), Section 50.54(f) "Conditions of license" (hereafter referred to as the "50.54(f) letter"). The request was issued in connection with implementing lessons-learned from the 2011 accident at the Fukushima Dai-ichi nuclear power plant, as documented in The Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident. Recommendation 2.1 of that document recommended that the staff issue orders to all licensees to reevaluate seismic and flooding for their sites against current NRC requirements and guidance. Subsequent Staff Requirements Memoranda associated with Commission Papers SECY 11-0124 and SECY-11-0137, instructed the NRC staff to issue requests for information to licensees pursuant to 10 CFR 50.54(f). By letter dated March 12, 2013, Luminant Generation Company, LLC, (Luminant, the licensee) submitted its Flood Hazard Reevaluation Report (FHRR) for Comanche Peak Nuclear Power Plant, Units 1 and 2 (Comanche Peak) (Agencywide Documents Access and Management System Accession No. ML 1307 4A058). The NRC staff has begun its review of the aforementioned submittals and plans to conduct a regulatory audit of Luminant to aid in its review of the licensee's FHRR. REGULATORY AUDIT SCOPE AND METHODOLGY: The areas of focus for the regulatory audit is the information contained in the Comanche Peak FHRR submittal, and all associated and relevant supporting documentation used in the development of the aforementioned document including, but not limited to, methodology, process information, calculations, computer models, etc. The audit will be conducted and completed over a small number of meetings that are to be determined, as necessary. Enclosure

-2 -INFORMATION AND OTHER MATERIAL NECESSARY FOR THE REGULATORY AUDIT: The information required for the audit is the licensee's models and supporting calculations, as well as documentation related to the storm surge and site specific probable maximum precipitation analyses. Other information needs will be discussed as audit meetings are scheduled. NRC AUDIT TEAM: Title Team Member Affiliation Team Leader, NRR/JLD Vic Hall NRC Branch Chief, NRO/DSEA Chris Cook NRC Branch Chief, NRR/JLD Aida Rivera-Varona NRC Technical Lead Nebiyu Tiruneh NRC Technical Manaqer Laura Quinn-Willinqham NRC Technical Support David Watson Oak Ridge National Laboratory Technical Support Scot DeNeale Oak Ridge National Laboratory LOGISTICS: The audit meetings will be coordinated with Luminant staff. DELIVERABLES: The NRC team will develop an audit summary report to convey the audit results. The report will be placed in ADAMS within 90 days of the completion of the final audit session, and will be publicly available. The information discussed in the audit may be included, fully or in part, in the development of the NRC technical staff's assessments as a result of the FHRR review.

R. Flores -2 -If you have any questions, please contact me at (301) 415-6185 or by e-mail at Anthony.Minarik@nrc.gov. Docket Nos.: 50-445 and 50-446 Enclosure: Audit Plan cc w/encl: Distribution via Listserv DISTRIBUTION: PUBLIC JLD R/F RidsNRRJLD Resource SBreithaupt, NRO CCook, NRO JBowen, NRR MShams, NRR ARivera, NRO RidsNrrDorllpl4-1 ADAMS Accession No.: ML15148A677 Sincerely, IRA/ Anthony J. Minarik, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation MWillingham, NRO KErwin, NRO BHarvey, NRO VHall, NRR MFranovich, NRR RidsNrrComanchePeak Resource OFFICE NRR/JLD/JHMB/PM NRR/JLD/JHMB/LA NRR/JLD/JHMB/BC NRR/JLD/JHMB/PM NAME AMinarik (TGovan for) Slent MShams AMinarik DATE 05/29/15 05/29/15 06/01/15 06/11/15 OFFICAL RECORD COPY