ML15160A715

Nuclear Regulatory Commission Plan for the Audit of NextEra Energy, Inc.'S Flood Hazard Reevaluation Report Submittal Relating to the Near-Term Task Force Recommendation 2.1 - Flooding for Duane Arnold Energy Center

ML15160A715
Person / Time
Site:	Duane Arnold
Issue date:	06/17/2015
From:	Minarik A Japan Lessons-Learned Division
To:	Vehec T NextEra Energy Duane Arnold
Minarik A, NRR/JLD, 415-6185
References
TAC MF3683
Download: ML15160A715 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 June 17, 2015 Mr. Thomas A. Vehec Site Vice President NextEra Energy Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324-9785

SUBJECT:

NUCLEAR REGULATORY COMMISSION PLAN FOR THE AUDIT OF NEXTERA ENERGY DUANE ARNOLD, LLC'S FLOOD HAZARD REEVALUATION REPORT SUBMITTAL RELATING TO THE NEAR-TERM TASK FORCE RECOMMENDATION 2.1-FLOODING FOR DUANE ARNOLD ENERGY CENTER (TAC NO. MF3683)

Dear Mr. Vehec:

This letter documents the U.S. Nuclear Regulatory Commission (NRC) staff's plan to perform a regulatory audit of NextEra Energy Duane Arnold, 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 Duane Arnold Energy Center (DAEC). This technical audit will be performed consistent with NRC Office of Nuclear Reactor Regulation, Office Instruction LIC-111, "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 DAEC FHRR submitted by letter dated March 10, 2014 (ADAMS Accession No. ML14072A019). Specifically, the audit will provide the NRC staff with a better understanding of the analyses of the flooding hazards presented in the DAEC 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 any potential technical concerns. The details of this audit have been discussed with Mr. Ken Putnam of your staff.

T. Vehec If you have any questions, please contact me at (301) 415-6185 or by e-mail at anthony.minarik@nrc.gov.

Sincerely, An~narik, roject Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Docket No. 50-331

Enclosure:

Audit Plan cc w/encl: Distribution via Listserv

NRC PLAN FOR THE AUDIT OF NEXTERA ENERGY DUANE ARNOLD. LLC'S FLOOD HAZARD REEVALUATION REPORT SUBMITTAL RELATING TO THE NEAR-TERM TASK FORCE RECOMMENDATION 2.1-FLOODING FOR DUANE ARNOLD ENERGY CENTER 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).

As an enclosure to a letter dated March 10, 2014, NextEra Energy Duane Arnold, LLC (NextEra, the licensee), submitted its Flood Hazard Reevaluation Report (FHRR) for Duane Arnold Energy Center (DAEC) (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML14072A020). The NRC staff has begun its review of the aforementioned submittals and plans to conduct a regulatory audit of NextEra 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 DAEC 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 several meetings that are to be determined, as necessary.

Enclosure

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. Additionally the NRC staff has identified some initial information that it needs to complete its review of the DAEC FHRR. These items are included in Enclosure 2.

Other information needs will be discussed as audit meetings are scheduled.

NRC AUDIT TEAM Title Team Member Affiliation Team Leader, NRR/JLD Anthony Minarik NRC Branch Chief, NRO/DSEA Chris Cook NRC Technical Lead Mike Lee NRC Technical ManaQer Mike WillinQham NRC Technical Support Rajiv Prasad Pacific Northwest National Laboratory LOGISTICS The audit meetings will be coordinated with NextEra 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.

T. Vehec If you have any questions, please contact me at (301) 415-6185 or by e-mail at anthony.minarik@nrc.gov.

Sincerely, IRA/

Anthony J. Minarik, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Docket No. 50-331

Enclosure:

Audit Plan cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC JLD R/F RidsNRRJLD Resource SBreithaupt, NRO MShams, NRR MWillingham, NRO AMinarik, NRR CCook, NRO ARivera, NRO KErwin, NRO MFranovich, NRR JBowen, NRR RidsNrrDorllpl3-1 BHarvey,NRO RidsNrrPMDuaneArnoldResource ADAMS Accession No.: ML15160A715 OFFICE NRR/JLD/JHMB/PM NRR/JLD/JHMB/LA NRR/JLD/JHMB/BC NRR/JLD/JHMB/PM NAME AMinarik Slent MShams AMinarik DATE 06/16/15 06/10/15 06/16/15 06/17/15 OFFICAL RECORD COPY