ML16260A060

Submittal of Flooding Hazard Re-evaluation Report, Required Response for Near-Term Task Force Recommendation 2.1

ML16260A060
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/14/2016
From:	Richard Anderson Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML16260A066	List: ML16260A060
References
OCAN091602
Download: ML16260A060 (2)

Text

• ~Entergy Entergy Operations, Inc.

1448 S.R. 333 Russellville, AR 72802 Tel 479-858-3110 Richard L. Anderson Site Vice President Arkansas Nuclear One OCAN091602 September 14, 2016 * --

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852

SUBJECT:

Flooding Hazard Re-evaluation Report- Required Response for Near-Term Task Force (NTTF) Recommendation 2.1 Arkansas Nuclear One - Units 1 and 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6

REFERENCES:

1. NRC letter to Entergy, RF/ Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the NTTF Review of Insights from the Fukushima Dai-ichi Accident, dated March 12,-2012 (OCNA031208) (ML12053A340)

2. Entergy letter to NRC, Required Response 2 to March 12, 2012, Request for Information, Enclosure 2, Recommendation 2.1, Flood Hazard Evaluation Report Arkansas Nuclear One - Units 1 and 2, dated March 12, 2014 (OCAN031401) (ML14071A459)

3. NRC letter to Entergy, Transmittal of Updated U.S. Army Corps of Engineers Flood Hazard Reevaluation (GAG Nos. MF3041 and MF3042),

• dated March 21, 2016 (OCNA031607) (ML16071A452)

4. NRC letter to Entergy, Transmittal of Updated U.S. Army Corps of Engineers Flood Hazard Reevaluation Information (GAG Nos. MF3041 and MF3042), dated May 27, 2016 (OCNA051607) (ML16147A389)

Dear Sir or Madam:

On March 12, 2012, the NRC issued Reference 1 requesting information associated with NTTF Recommendation 2.1 for flooding: By Reference 2 Entergy Operations, Inc. (Entergy) committed to submit the flood hazard evaluation six months after receipt of information from the Uni!ed States Army Corps of Engineers (L!~ACE) .. R~ferences 3 and 4 required Entergy to consider the USACE results and submit the flood h~zard re-evaluation report by September 17, 2016. The USACE performed the Probable Maximum Flood and Dam Failure analyses for the Arkansas River using USACE precipitation, hydrologic, and hydraulic models.

These model's results were used to perform Arkansas Nuclear One's flood hazard evaluation.

AD/ IJ

/\] ((_f_

OCAN091602 Page 2 of 2 The enclosed Arkansas Nuclear One Units 1 and 2 Flooding Hazard Re-evaluation Report addresses the following flood causing mechanisms: local intense precipitation, flooding in streams/rivers, dam breaches/failures, storm surge, seiche, tsunami, ice-induced flooding, channel migration or diversion, and combined effect flood. The report indicates that the hazards created by these mechanisms are screened out or are bounded by the current design basis with the exception of the loGal intense precipitation mechanism; however, interim actions are not required since the local intense precipitation does not challenge structures, systems, and components important to safety.

This letter contains no new regulatory commitments. Should you have any questions concerning the content of this letter, please contact Stephenie Pyle at 479.858.4704.

I declare under penalty of perjury that the foregoing is true and correct. Executed on September 14, 2016.

Sincerely, T~<ZL+~~

RLNnbm

Enclosure:

Arkansas Nuclear One Units 1 and 2 Flooding Hazard Re-evaluation Report cc: Mr. Kriss Kennedy Regional Administrator U.S. Nuclear Regulatory Commission, Region IV 1600 East Laniar Boulevard Arlington, TX 76011-4511 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 I- -~

London, AR 72847 U.S. Nuclear Regulatory Commission Attn: Mr. Thomas J. Wengert MS 08 B1A One White Flint North 11555 Rockville Pike Rockville, MD 20852 U. S. Nuclear Regulatory Commission Robert Bernardo Hazards Management Branch Japan Lessons-Learned Division MS 0-13F15M One White Flint North 11555 Rockville Pike Rockville, MD 20852