ML103440599

Request for Additional Information for the Review of the Hope Creek Generating Station License Renewal Application for Drywell Shell

ML103440599
Person / Time
Site:	Hope Creek
Issue date:	01/03/2011
From:	Bennett Brady License Renewal Projects Branch 1
To:	Joyce T Public Service Enterprise Group
Brady, Bennett - 301/415-6363
References
TAC ME1832
Download: ML103440599 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 January 3, 2011 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC P.O. Box 236 Hancocks Bridge, NJ 08038

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE HOPE CREEK GENERATING STATION LICENSE RENEWAL APPLICATION FOR DRYWELL SHELL (TAC NO ME1832)

Dear Mr. Joyce:

By letter. dated August.18, 2009, Public Service Enterprise Group Nuclear, LLC, submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54 (10 CFR Part 54) for renewal of Operating License No. NPF-57 for the Hope Creek Generating Station. The staff of the U.S. Nuclear Regulatory Commission (NRC or the staff) is reviewing this application in accordance with the guidance in NUREG-1800, "Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants." During its reView, the staff has identified areas where additional information is needed to complete the review. The staff's request for additional information is included in the Enclosure. Further requests for additional information may be issued in the future.

Items in the enclosure were provided to John Hufnagel and other members of your staff, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-2981 or bye-mail at bennett.brady@nrc.gov.

Sincerely, Bennett M. Brady, Project Manager Projects Branch f Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-354

Enclosure:

As stated cc w/encl: See next page

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE HOPE CREEK

. GENERATING STATION LICENSE RENEWAL APPLICATION FOR DRYWELL SHELL (TAC NO ME1832)

RAI 8.2.1.28-3

Background:

In a conference call on June 21, 2010, the applicant stated that the drains at the bottom of the drywell have been inspected previously and no debris were found that could clog the drains.

Also, in response to RAI B.2.1.28-1, the applicant stated that Hope Creek will perform one-time UT thickness measurements of the drywell shell in the area below the penetration sleeve J13 to demonstrate that significant loss of material due to corrosion had not occurred on the drywell shell and therefore, it can be concluded that water is not trapped in the two inch annular space between the drywell shell and concrete shield wall. The applicant also stated in its response to RAI B.2.1.28-1 that the UT thickness measurements taken from inside the drywell in 2007 and 2009 were greater than the nominal design thickness of the drywell shell.

During the refueling outage in October 2010, the applicant observed leakage through penetrations J13 and J14. In addition, UTthickness measurements of the drywell shell in the area below penetrations J13 and J14 indicated an area of interest with slightly lower drywell shell thickness readings. Furthermore, the applicant determined that all of the four drains at the bottom of the drywell, including the one directly below penetration J13 and J14, were blocked.

Request; The applicant is requested to provide the following information:

1. Plans and schedule for removing the blockage of the four drains at the bottom of the drywell. If the blockage cannot be removed, provide details of alternative measures such as conducting coredrills from inside the drywell or torus room to remove water that may be trapped in the annular space between the drywell shell and concrete shield wall.

2. Revision to enhancements 9 and 10 to increase the number and frequency of UT examinations to establish a corrosion rate and projected loss of drywell thickness before the period of extended operation. The staff believes that UT examination during each IWE inspection period (every other refueling outage) may not provide enough data points to establish the corrosion rate.

3. Plans and schedule for examination and investigation to find the source of the leakage, and repair of the leak.

ENCLOSURE

January 3, 2011 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC P.O. Box 236 Hancocks Bridge, NJ 08038

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE HOPE CREEK GENERATING STATION LICENSE RENEWAL APPLICATION FOR DRYWELL SHELL (TAC NO ME1832)

Dear Mr. Joyce:

By letter dated August 18, 2009, Public Service Enterprise Group Nuclear, LLC, submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54 (10 CFR Part 54) for renewal of Operating License No. NPF-57 for the Hope Creek Generating Station. The staff of the U.S. Nuclear Regulatory Commission (NRC or the staff) is reviewing this application in accordance with the guidance in NUREG-1800, "Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants." During its review, the staff has identified areas where additional information is needed to complete the review. The staff's request for additional information is included in the Enclosure. Further requests for additional information may be issued in the future.

Items in the enclosure were provided to John Hufnagel and other members of your staff, and a mutually agreeable date for the response is within 30 days from the date of. this letter. If you have any questions, please contact me by telephone at 301-415-2981 or bye-mail at bennett.brady@nrc.gov.

Sincerely, IRA!

Bennett M. Brady, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-354

Enclosure:

As stated cc w/encl: See next page DISTRIBUTION:

See next page ADAMS Accession No.: ML103440599 OFFICE PM:DLRRPB1 LA:DLR BC:DLRRPB1 PM:DLRRPB1 NAME BBrady SFigueroa BPham BBrady DATE 12/16/10 12/30/10 1103/11 OFFICIAL RECORD COpy

Letter to T. Joyce from B. Brady dated January 3, 2011

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE HOPE CREEK GENERATING STATION LICENSE RENEWAL APPLICATION FOR DRYWELL SHELL (TAC NO ME1832)

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