ML12164A567

Response to NRC Request for Information Per 10CFR50.54(f) Re Flooding Aspects of Recommendations 2.1 and 2.3 of the Near-Term Task Force Review of Insights from Fukushima Dai-ichi Accident

ML12164A567
Person / Time
Site:	Arkansas Nuclear
Issue date:	06/08/2012
From:	Schwarz C J Entergy Operations
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
0CAN061202
Download: ML12164A567 (5)

Text

0CAN061202

June 8, 2012

U.S. Nuclear Regulatory Commission

ATTN: Document Control Desk

11555 Rockville Pike

Rockville, MD 20852

SUBJECT:

Entergy's Response to NRC Request for Information (RFI)

Pursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects of

Recommendations 2.1 and 2.3 of the Near-Term Task Force

Review of Insights from the Fukushima Dai-ichi Accident

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, RFI Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima

Dai-ichi Accident , dated March 12, 2012 (0CNA031208) (ML12053A340) 2. NRC Letter to Entergy, Prioritization of Response Due Dates for Site Flooding Hazard Evaluations , dated May 11, 2012 (0CNA051203) (ML12097A509) 3. NRC letter, Endorsement of Nuclear Energy Institute (NEI) 12-07, "Guidelines for Performing Verification Walkdowns of Plant Flood Protection Features

," dated May 31, 2012

Dear Sir or Madam:

On March 12, 2012, the NRC issued Reference 1 to all power reactor licensees.

Enclosures 2 and 4 of Reference 1 contain specific requested actions, requested

information, and required responses associated with Recommendations 2.1 and 2.3 for

flooding evaluations and walkdowns. This letter provides Entergy Operations', Inc.

(Entergy's) 90-day response to Reference 1 for Arkansas Nuclear One (ANO). Entergy Operations, Inc.

1448 S.R. 333 Russellville, AR 72802

Tel 479-858-3110 Christopher J. Schwarz Vice President, Operations A rkansas Nuclear One

0CAN061202 Page 2 of 3

Recommendation 2.1: Flooding

The response date for ANO's flood hazard evaluation was identified in Reference 2 as

March 12, 2014, which corresponds to two years from the date of Reference 1.

Entergy plans to meet the requested date for the other required responses in of Reference 1. Specifically, an approach for developing an Integrated

Assessment for ANO will be submitted 60 days after NRC endorsement of the Integrated

Assessment Guidance. In addition, an Integrated Assessment report for ANO, if it is

necessary, will be submitted two years a fter the flood evaluation is submitted.

Recommendation 2.3: Flooding

For flooding Recommendation 2.3 (walkdowns), Enclosure 4 of Reference 1 states that

each licensee is to confirm that it will use the NRC-endorsed flooding walkdown

procedure or provide a description of the process it will use. Entergy confirms that it will

use the flooding walkdown procedure (NEI 12-07, Guidelines for Performing Verification Walkdowns of Plant Flood Protection Features) endorsed by Reference 3 as the basis for the flooding walkdowns at ANO.

Entergy plans to comply with the response timeline in Enclosure 4 of Reference 1.

Specifically, Entergy will submit a report documenting the results of its flooding design

basis walkdowns at ANO by November 27, 2012, which corresponds to 180 days after

NRC endorsement of the generic guidance.

The new commitments contained in this submittal are summarized in the attachment.

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

June 8, 2012.

Sincerely,

Original signed by Christopher J. Schwarz

CJS/nbm

Attachment:

List of Regulatory Commitments 0CAN061202 Page 3 of 3

cc: Mr. Elmo Collins Regional Administrator

U. S. Nuclear Regulatory Commission, Region IV

1600 East Lamar Boulevard Arlington, TX 76011-4511

U. S. Nuclear Regulatory Commission

Attn: Director, Office of Nuclear Reactor Regulation

One White Flint North

11555 Rockville Pike

Rockville, MD 20852

NRC Senior Resident Inspector

Arkansas Nuclear One

P.O. Box 310

London, AR 72847

U. S. Nuclear Regulatory Commission

Attn: Mr. Kaly Kalyanam

MS O-8 B1

One White Flint North

11555 Rockville Pike

Rockville, MD 20852

Attachment to 0CAN061202 List of Regulatory Commitments Attachment to 0CAN061202

Page 1 of 1

List of Regulatory Commitments The following table identifies those actions committed to by Entergy in this document. Any other

statements in this submittal are provided for information purposes and are not considered to be

regulatory commitments.

TYPE (Check One)

COMMITMENT ONE-TIME ACTION CONTINUING COMPLIANCE SCHEDULED COMPLETION DATE (If Required)

Submit flood hazard evaluation to the NRC. X March 12, 2014 An approach for developing an Integrated Assessment for Arkansas Nuclear One (ANO) will be submitted.

X 60-days after NRC endorsement of the

Integrated Assessment

Guidance An Integrated Assessment report for

ANO, if it is necessary, will be submitted

two years after the flood evaluation is

completed.

X March 12, 2016 (if necessary)

Entergy will use the flooding walkdown

procedure (Nuclear Energy Institute

12-07, Guidelines for Performing Verification Walkdowns of Plant Flood Protection Features) endorsed by Reference 3 as the basis for the flooding

walkdowns and plans to comply with the

response timeline in Enclosure 4 of

Reference 1 by submitting a report

documenting the results of its flooding

design basis walkdowns at ANO 180 days

after NRC endorsement of the generic

guidance. X November 27, 2012