ML14105A366

Arkansas Nuclear One, Units 1 and 2: Required Response 2 to March 12, 2012, Request for Information (Rfi), Enclosure 2, Recommendation 2.1, Flood Hazard Evaluation Report

ML14105A366
Person / Time
Site:	Arkansas Nuclear
Issue date:	04/14/2014
From:	Browning J G Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
0CAN041402
Download: ML14105A366 (5)

Text

0CAN041402

April 14, 2014

U.S. Nuclear Regulatory Commission

ATTN: Document Control Desk

11555 Rockville Pike

Rockville, MD 20852

SUBJECT:

Required Response 2 to March 12, 2012, Request for Information (RFI), , Recommendation 2.1, Flood Hazard Evaluation Report

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 (NTTF) Review of Insights from the Fukushima Dai-ichi Accident

, dated March 12, 2012 (0CNA031208)

(ML12053A340) 2. Entergy letter to NRC, Entergy's Response to NRC RFI Pursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects of Recommendations 2.1 and 2.3 of the NTTF Review of Insights from the Fukushima Dai-ichi

Accident, dated June 8, 2012 (0CAN061202) (ML12164A567) 3. Entergy letter to NRC, Assistance in Obtaining Information on Dams

, dated September 30, 2013 (0CAN091302) (ML13275A067) 4. NRC letter to Entergy, Supplemental Information Related to RFI Pursuant toTitle 10 of the Code of Federal Regulations 50.54(f) Regarding Flooding Hazard Reevaluations for Recommendation 2.1 of the NTTF Review of Insights fron the Fukushima Dai-ichi Accident

, dated March 1, 2013 (0CAN031302) (ML13044A561) 5. Entergy letter to NRC, Required Response 2 to March 12, 2012, Request for Information (RFI), Enclosure 2, Recommendation 2.1, Flood Hazard

Evaluation Report

, dated March 12, 2014 (0CAN031401) (ML14071A459) 6. NRC email to Entergy, Request for Additional Information - Proposed Extension Request Regarding Response 2 to March 12, 2012, Request for Information, Enclosure 2, Recommendation 2.1, Flood Hazard

Reevaluation Report

, dated March 24, 2014 (0CNA031412)

(ML14083A683)

Entergy Operations, Inc.

1448 S.R. 333 Russellville, AR 72802

Tel 479-858-3110 Jeremy G. Browning Site Vice President Arkansas Nuclear One

0CAN041402 Page 2 of 3

Dear Sir or Madam:

On March 12, 2012, the NRC issued Reference 1 requesting information pursuant to Title 10 of

the Code of Federal Regulations 50.54(f). Enclosure 2 of that letter contained specific

requested Information associated with NTTF Recommendation 2.1 for flooding. By Reference 2

Entergy Operations, Inc. (Entergy) committed to submit the flood hazard evaluation for

Arkansas Nuclear One (ANO), Units 1 and 2 as a Category 2 site by March 12, 2014.

In September 2013 (Reference 3), Entergy requested the assistance of the NRC to obtain

information from three Districts of the United States Army Corps of Engineers (USACE) to

support the flood hazard reevaluation at ANO. Pursuant to the guidance in Reference 4,

Entergy requested a revision to its commitment for submittal of the flood hazard reevaluation

report to six months after USACE data is received (Reference 5).

By email dated March 24, 2014 (Reference 6), an NRC request for additional information (RAI)

was forwarded to Entergy associated with the revised commitment of Reference 5 as follows:

The NRC staff requests that Entergy provide a more detailed breakdown of the activities and analyses that remain to be conducted, as well as the associated schedule for those activities and analyses. The NRC staff suggests that a Gantt chart or similar format would be an effective means of communicating the schedule information.

The NRC and ANO personnel discussed this request in phone conversation on March 25, 2014.

The NRC suggested ANO review similar information provided to the NRC by the Cooper and

Ft. Calhoun nuclear facilities. Following review, the ANO version of a Gantt chart did not

contain the level of detail provided by the aforementioned facilities. Therefore, remaining

activities were loaded as inputs into a work scheduling database to produce detail similar to that

previously provided to the NRC by other facilities.

The attachment to this letter provides a chart containing the information that Entergy believes provides the necessary response to the RAI.

This letter contains no new regulatory commitment. 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 April 14, 2014.

Sincerely,

ORIGINAL SIGNED BY JEREMY G. BROWING

JGB/dbb

Attachment:

Detailed Breakdown of Remaining Activities - Flood Hazard Reevaluation

0CAN041402 Page 3 of 3

cc: Mr. Marc L. Dapas Regional Administrator

U. S. Nuclear Regulatory Commission

Region IV

1600 East Lamar Boulevard Arlington, TX 76011-4511 NRC Senior Resident Inspector

Arkansas Nuclear One

P. O. Box 310

London, AR 72847 U. S. Nuclear Regulatory Commission

Attn: Mr. Peter Bamford

MS O-8B3

One White Flint North

11555 Rockville Pike

Rockville, MD 20852

Attachment to 0CAN041402 Detailed Breakdown of Remaining Activities - Flood Hazard Reevaluation

ANO RAI A NANO RAI ANO Schedule for RAI response

ANO RAI.01 ANO RAI.01 ANO Flood Hazard Evaluation Project

ANO RAI.02 ANO RAI.02 ANO Prob Max Flood on Arkansas River

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ANO RAI.03 ANO RAI.03 Dams Analysis

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ANO RAI.04 ANO RAI.04 ANO Combined Events

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ANO RAI.05 ANO RAI.05 Reevaluation Report

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