ML12313A412

Completion of Commitments of Confirmatory Action Letter 3-11-001

ML12313A412
Person / Time
Site:	Davis Besse
Issue date:	11/07/2012
From:	Casto C Region 3 Administrator
To:	Lieb R FirstEnergy Nuclear Operating Co
References
CAL 3-11-001
Download: ML12313A412 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION REGION III 2443 WARRENVILLE ROAD, SUITE 210 LISLE, IL 60532-4352 November 7, 2012

CAL No. 3-11-001 Mr. Raymond Lieb Site Vice President

FirstEnergy Nuclear Operating Company

Davis-Besse Nuclear Power Station Mail Stop A-DB-3080 5501 North State Route 2 Oak Harbor, OH 43449-9760

SUBJECT:

COMPLETION OF COMMITMENTS OF CONFIRMATORY ACTION LETTER NO. 3-11-001

Dear Mr. Lieb:

This letter is in response to your May 30, 2012, letter informing the U.S. Nuclear Regulatory Commission (NRC) that FirstEnergy Nuc lear Operating Company (FENOC) had completed all actions required by the December 2, 2011, Confirmatory Action Letter (CAL), issued to the Davis-Besse Nuclear Power Station. The CAL (ML11336A355) confirmed the following commitments by FENOC to the NRC:

1. FENOC will provide the results of the root cause evaluation and corrective actions to the NRC, including any long-term monitoring requirements, by February 28, 2012.

2. FENOC will identify four shield building locations, which were core bored during this evaluation, for examination. These uncracked locations will be directly adjacent to locations that have been confirmed to be cracked. The four uncracked locations, as designated on FENOC drawing C-111A, are:

a. Adjacent to a flute shoulder [S9-666.0-12]; b. In a flute area [F4-1-666.0-3];

c. Adjacent to Main Steam Line penetration 39 [S7-652.0-6.5]; and

d. Adjacent to Main Steam Line penetration 40 [S9-650.0-9].

3. FENOC will examine the four core bore locations from Commitment 2 above with a borescope to verify cracking has not migrated to these core bores located in solid (i.e., uncracked) concrete, within 90 days following plant restart (Mode 2) from the 2011 mid-cycle outage.

4. FENOC will examine the crack interface to identify any changes by performing a core bore in a known crack area within the M ain Steam Line Room, within 90 days following plant restart (Mode 2) from the October 2011 mid-cycle outage.

R. Lieb

5. FENOC will identify two additional shield building locations, which were core bored during this evaluation, for examination. These uncracked locations will be directly adjacent to locations that have been confirmed to be cracked. The two uncracked locations, as designated on FENOC drawing C-111A, are:

a. In a flute area [F5-777.0-4]; and

b. Adjacent to a flute shoulder [S2-783.5-4.0].

6. FENOC will examine the four core bore locations from Commitment 2 along with the two core bore locations from Commitment 5 with a borescope to verify cracking has not migrated to these core bores located in solid (i.e., uncracked) concrete, during the seventeenth refueling outage currently scheduled to commence in 2012.

7. FENOC will examine the crack interface to identify any changes by examining either existing core bore locations with known cracks or by performing a core bore in a similar area:

a. Adjacent to a flute shoulder [S9-666.0-11[;

b. Near the top of the shield building [S9-785-22.5]; and

c. Adjacent to Main Steam Line penetration [core bore from Commitment 4].

On February 28, 2012, your root cause evaluation and proposed corrective actions associated with your root cause were provided to the NRC in fulfillment of Commitment No. 1 (Reference ADAMS Accession No. ML120600056). Additionally, the NRC received and reviewed changes contained in Revision 1 of your root cause report (ML12142A053).

Commitments No. 3 and 4 of the CAL were assessed in Section 1R13.2 of Inspection Report (IR) 05000346/2012002 (ML12116A209). Commitments No. 6 and 7 were assessed in Section 1R13.2 of IR 05000346/2012003 (ML12212A077). The remaining two commitments, Commitments No. 2 and 5, identified locations to be examined by the licensee. The NRC's assessment of Commitments No. 3 and 6 validated that Commitments No. 2 and 5 were completed. Inspectors ensured that the locations identified in Commitments No. 2 and 5 were the locations examined.

Based on our review of the CAL commitments and the results of our inspections, we consider Commitments No. 1 through 7 of the CAL to be closed and, therefore, conclude that FENOC has met all of the commitments contained in the December 2, 2011, CAL issued to Davis-Besse Nuclear Power Station. The NRC will continue to monitor the implementation of the corrective actions provided in your root cause evaluation.

R. Lieb

In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS), accessible from the NRC Web Site at http://ww.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely, /RA By Steven Reynolds Acting For/

Charles A. Casto Regional Administrator

Docket No. 50-346 License No. NPF-3 cc: Distribution via ListServ

R. Lieb

In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS), accessible from the NRC Web Site at http://ww.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely, /RA By Steven Reynolds Acting For/

Charles A. Casto Regional Administrator

Docket No. 50-346 License No. NPF-3 cc: Distribution via ListServ

DOCUMENT NAME: G:\DRPIII\DAVI\Davis-Besse CAL 3-11-001 Closure Letter.docx Publicly Available Non-Publicly Available Sensitive Non-Sensitive To receive a copy of this document, indicate in th e concurrence box "C" = Copy without attach/encl "E" = Copy with attach/encl "N" = No copy OFFICE RIII RIII RIII RIII NAME PSmagacz:dtp JCameron AMStone for DHills SReynolds DATE 1018/12 10/18/12 10/19/12 10/19/12 OFFICE RIII RIII NRR RIII NAME SWest SOrth PHiland by e-mail SReynolds for CCasto DATE 10/22/12 10/25/12 11/05/12 11/07/12 OFFICIAL RECORD COPY Letter to R. Lieb from C. Casto dated November 7, 2012

SUBJECT:

COMPLETION OF COMMITMENTS OF CONFIRMATORY ACTION LETTER NO. 3-11-001

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