ML17103A440
| ML17103A440 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 04/14/2017 |
| From: | Lauren Gibson Japan Lessons-Learned Division |
| To: | Vehec T Nextera Energy |
| Gibson L, NRR/JLD, 415-1056 | |
| References | |
| CAC MF3686 | |
| Download: ML17103A440 (3) | |
Text
OFFICIAL USE ONLY-SECURITY-RELATED INFORMATION UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Thomas A. Vehec Site Vice President NextEra Energy Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324-9785 April 14, 2017
SUBJECT:
CORRECTION TO DUANE ARNOLD ENERGY CENTER - STAFF ASSESSMENT OF RESPONSE TO 10 CFR 50.54(f) INFORMATION REQUEST
- FLOOD-CAUSING MECHANISM REEVALUATION (CAC NO. MF3686)
Dear Mr. Vehec:
By letter dated April 3, 2017, (Agencywide Documents Access and Management (ADAMS)
Accession Nos. ML17076A193 (public) and ML17076A192 (non-public)), the U.S. Nuclear Regulatory Commission (NRC) provided its staff assessment of the Flood Hazard Reevaluation Report submitted by NextEra Energy Duane Arnold, LLC (NextEra, the licensee). One sentence in the cover letter inadvertently named Exelon instead of NextEra. The sentence should read, The NRC staff has no additional information needs at this time with respect to NextEra's 50.54(f) response related to flooding." This letter replaces the previous cover letter with no additional changes. There were no changes to the enclosures.
By letter dated March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued a request for information pursuant to Title 1 O of the Code of Federal Regulations, Section 50.54(f)
(hereafter referred to as the 50.54(f) letter). The request was issued as part of implementing lessons learned from the accident at the Fukushima Dai-ichi nuclear power plant. Enclosure 2 to the 50.54(f) letter requested licensees to reevaluate flood-causing mechanisms using present-day methodologies and guidance. By letter dated March 10, 2014(ADAMS Accession No. ML14072A019), NextEra responded to this request for Duane Arnold Energy Center (Duane Arnold).
By letter dated March 31, 2016 (ADAMS Accession No. ML16084A767), the NRC staff sent the licensee a summary of its review of Duane Arnold's reevaluated flood-causing mechanisms.
The enclosed staff assessment provides the documentation supporting the NRC staff's conclusions summarized in the letter. As stated in the letter, because local intense precipitation and streams and rivers at Duane Arnold are not bounded by the plant's current design basis, additional assessments of the flood hazard mechanisms are necessary. transmitted herewith contains Security-Related Information. When separated from Enclosure 1, this document is decontrolled.
OFFICIAL USE ONL Y-SECURITV-RELATED INFORMATION
OFFICIAL USE ONLY-SECURITY-RELATED INFORMATION The NRC staff has no additional information needs at this time with respect to NextEra's 50.54(f) response related to flooding.
This staff assessment closes out the NRC's efforts associated with CAC Nos. MF3686.
If you have any questions, please contact me at (301) 415-1056 or e-mail at Lauren.Gibson@nrc.gov.
Docket No. 50-331
Enclosures:
1. Staff Assessment of Flood Hazard Sincerely, Lauren K. Gibson, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation Reevaluation Report (Non-public, security-related information)
- 2. Staff Assessment of Flood Hazard Reevaluation Report (public) cc w/encl: Distribution via Listserv
ML17103A440 OFFICE NRR/JLD/JHMB/PM NRR/JLD/LA NAME LKGibson Slent DATE 4/13/17 4/14/17 RidsOgcMailCenter Resource RidsOpaMail Resource RidsAcrsAcnw_MailCtr Resource CCook, NRO RidsRgn3MailCenter Resource RidsNrrLASLent ACampbell, NRO MWillingham, NAO NSanfilippo, NRR
- via email NRR/JLD/JHMB/BC NRR/JLD/JHMB/PM NSanfilippo LKGibson 4/14/17 4/14/17