0CAN051606, Generic Letter 2004-02 Commitment Extension

Generic Letter 2004-02 Commitment Extension

ML16152A662
Person / Time
Site:	Arkansas Nuclear
Issue date:	05/31/2016
From:	Jeremy G. Browning Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
0CAN051606, GL-2004-02, TAC MF6536
Download: ML16152A662 (4)

Text

Entergy Operations, Inc.

1448 S.R. 333 Russellville, AR 72802 Tel 479-858-3110 Jeremy G. Browning Site Vice President Arkansas Nuclear One 0CAN051606 May 31, 2016 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

Generic Letter (GL) 2004-02 Commitment Extension Arkansas Nuclear One - Units 1 and 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6

REFERENCES:

1. Entergy Letter to NRC, GL 2004-02 Closure Extension, dated November 26, 2014 (0CAN111402) (ML14330A638)

2. NRC Letter to Pressurized Water Reactor Owners Group (PWROG), Request for Additional Information Re: PWROG Topical Report WCAP-17788, Comprehensive Analysis and Test Program for GSI-191 Closure, dated April 13, 2016 (TAC No. MF6536) (ML16070A255)

3. Entergy letter to NRC, GL 2004-02 Closure Option, dated May 16, 2013 (0CAN051301) (ML13137A126)

4. NRC Letter to Entergy, Arkansas Nuclear One, Units 1 and 2 - GL 2004-02 Supplemental Response, dated January 26, 2010 (0CNA011002) (ML100190320)

Dear Sir or Madam:

In accordance with Reference 1 Entergy Operations, Inc. (Entergy) committed to complete bypass re-testing and incorporate results into Arkansas Nuclear One (ANO) calculations to support closure of GL 2004-02 by June 15, 2016. Due to the reasons discussed below, it is necessary to extend this date.

In order to complete bypass re-testing, small-scale testing followed by large-scale testing is necessary. The purpose of the small-scale testing is to eliminate variables in order to reduce the amount of the more expensive large-scale testing. The small-scale test report was received on November 23, 2015. Also, the PWROG has performed in-vessel testing to provide plant-specific in-vessel fiber limits. The results from the PWROG have

0CAN051606 Page 2 of 2 been submitted to the NRC as WCAP-17788; however, the NRC has issued requests for additional information to the PWROG which are currently due in August 2016 (Reference 2).

In addition, Entergys vendor is experiencing resource issues due to testing demands from the industry and is not able to perform the large-scale testing for ANO until 2017.

Subsequent to successful large-scale testing, Entergy still needs to revise the downstream effects calculations. Therefore due to Entergys vendor schedule and the PWROG finalization of WCAP-17788, an extension until December 15, 2017, is needed to complete the large-scale bypass re-testing and incorporate the results into ANO calculations. This has been discussed with the NRR staff on May 23, 2016.

Reference 4 remains valid as supported by References 1 and 3, and the defense-in-depth measures described in Reference 3 continue to remain in place, thus providing a basis for the units safe continued operation in the interim period.

Based on extension of the bypass re-testing completion, two commitments from Reference 1 require revision and are included 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 May 31, 2016.

Sincerely, ORIGINAL SIGNED BY JERERMY G. BROWNING JGB/nbm

Attachment:

List of Regulatory Commitments cc: Mr. Marc 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. Stephen Koenick MS O8 B1A One White Flint North 11555 Rockville Pike Rockville, MD 20852

Attachment to 0CAN051606 List of Regulatory Commitments

Attachment to 0CAN051606 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 SCHEDULED (Check One) COMPLETION COMMITMENT DATE ONE-TIME CONTINUING (If Required)

ACTION COMPLIANCE Complete bypass re-testing and X December 15, 2017 incorporate results into Arkansas Nuclear One (ANO) calculations.

Complete the necessary insulation X 1R28 Fall 2019 replacements, remediation, or model refinements. 2R27 Spring 2020 Within six months of establishing a final X June 15, 2018 determination of the scope of insulation (expected date) replacement or remediation, or model refinements, Entergy will submit a final updated supplemental response to support closure of Generic Letter 2004-02 for ANO-1 and ANO-2.