0CAN111402, Generic Letter (GL) 2004-02 Closure Extension

Generic Letter (GL) 2004-02 Closure Extension

ML14330A638
Person / Time
Site:	Arkansas Nuclear
Issue date:	11/26/2014
From:	Jeremy G. Browning Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
0CAN111402
Download: ML14330A638 (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 0CAN111402 November 26, 2014 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

Generic Letter (GL) 2004-02 Closure 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 Option, dated May 16, 2013 (0CAN051301) (ML13137A126)

2. 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 December 15, 2014. 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 was planned. 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 testing began earlier this year, but during testing it was determined that the test rig had to be completely reconfigured which resulted in a significant delay. The first round of small-scale testing has just recently been completed, and the small-scale test report is expected in late 2014. In addition to this delay, Entergys vendor experienced resource issues due to testing demands from the industry. Also, the Pressurized Water Reactor Owners Group (PWROG) has been performing in-vessel testing to provide plant-specific in-vessel fiber limits. The results of the PWROG testing are currently expected in spring of 2015.

0CAN111402 Page 2 of 2 After small-scale testing is complete the large-scale testing program is planned to commence which is expected to take several months to complete. Subsequent to successful large-scale testing, Entergy still needs to revise the downstream effects calculations. Therefore, an 18-month extension until June 15, 2016, is needed to complete the bypass re-testing and incorporate the results into ANO calculations.

In addition, Reference 2 remains applicable as supplemented by Reference 1. The defense-in-depth measures described in Reference 1 continue to remain in place.

Based on extension of the bypass re-testing completion, two additional commitments from Reference 1 also require revision and are included in the attachment.

This letter contains new regulatory commitments which are identified 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 November 26, 2014.

Sincerely, ORIGINAL SIGNED BY JEREMY 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: Ms. Andrea E. George MS O-8B1 One White Flint North 11555 Rockville Pike Rockville, MD 20852

Attachment to 0CAN111402 List of Regulatory Commitments

Attachment to 0CAN111402 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 June 15, 2016 incorporate results into Arkansas Nuclear One (ANO) calculations.

Complete the necessary insulation X 1R27 Spring 2018 replacements, remediation, or model refinements. 2R26 Fall 2018 Within six months of establishing a final X December 15, 2016 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.