ML102000293

Request for Additional Information for the Review of the Hope Creek Generating Station License Renewal Application for Bolting and Flow Element

ML102000293
Person / Time
Site:	Hope Creek
Issue date:	08/03/2010
From:	Bennett Brady License Renewal Projects Branch 1
To:	Joyce T Public Service Enterprise Group
Cunanan, A DLR/RPB1 415-3897
References
TAC ME1832
Download: ML102000293 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 3,2010 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 BOLTING AND FLOW ELEMENT (TAC NO. ME1832)

Dear Mr. Joyce:

By letter dated August 18, 2009, as supplemented by letter dated January 23,2009, Public Service Enterprise Group Nuclear, LLC, submitted an application pursuant to Title 10 of the Code of Federal Regulations 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,

~/V Bennett M. Brady, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-354

Enclosure:

As stated cc w/encl: Distribution via Listserv

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE HOPE CREEK GENERATING STATION LICENSE RENEWAL APPLICATION FOR BOLTING AND FLOW ELEMENT (TAC NO. ME1832)

B.2.1.12w 02

Background:

The Generic Aging Lessons Learned (GALL) Report, aging management program (AMP)

XI.M18, "detection of aging effects" states that for both American Society of Mechanical Engineers code class bolting and for other pressure retaining bolting visual detection of leakage before the leakage become excessive is one acceptable way to inspect for loss of preload in bolting.

License renewal application (LRA) Section B.2.1.12 (Bolting Integrity) states that the program provides for managing cracking, loss of material and loss of preload by performing visual inspections for pressure retaining bolted joint leakage in the following environments: air indoor and outdoor, raw water, soil and treated water.

Issue:

It is not clear to the staff how visual inspection of bolting in a raw water or treated water environment would be capable of detecting loss or reduction of bolting preload since the environment would preclude capability to detect seepage or minor indications of leakage at bolted joints.

Reguests:

a)

Clarify what pressure joint bolting within the scope of the Bolting Integrity Program is exposed to the raw water and treated water environments; and b)

Explain how and on what frequency visual inspections are performed for submerged bolted joints and how those inspections would detect loss of preload in the bolting.

3.4.2.4-01

Background:

The GALL Report recommends GALL AMP XI.M7 "BWR Stress Corrosion Cracking" and XI.M2 "Water Chemistry" to manage aging of components susceptible to cracking and stress corrosion cracking. In LRA Table 3.4.2-4 (Page 3.4-50), the applicant states that it plans to manage the cracking/stress corrosion cracking of a class 1 flow element made of cast austenitic stainless steel (CASS) exposed to treated water (internal) > 482 of using the "Water Chemistry" AMP.

The AMR line item cites Notes E and 4. Note E indicates the LRA AMR is consistent with GALL Report item for material, environment and aging effects, but a different AMP is credited. Note 4 states, in part, that 'This CASS nozzle is not susceptible to thermal embrittlement because the nozzles were cast by a centrifugal casting method using low molybdenum stainless steel material (SA 351 CF 8)." (Page 3.4-60)

ENCLOSURE

- 2 Issue:

Endnote 4 addresses thermal embrittlement, not cracking/stress corrosion cracking. The GALL Report recommends both GALL AMP XI.M7 "BWR Stress Corrosion Cracking" and XI.M2 "Water Chemistry" to manage stress corrosion cracking. The applicant credits only AMP (Water Chemistry) to manage the aging of this item.

Request:

Please provide a justification as to why only Water Chemistry AMP is credited to manage the cracking and stress corrosion cracking of the CASS portion of the flow element. Please provide material composition information (e.g., a CMTR) of this flow element.

'.. ML102000293 OFFICE PM:DLR:RPB1 LA:DLR BC:DLR:RPB1 PM:DLR:RPB1 NAME B. Brady (A Cunanan for)

Y. Edmonds B. Pham B. Brady (B. Pham for)

DATE 08/03/10 08/02110 08/03/10 08/03/10

Letter to T. Joyce from B. Brady dated August 3,2010

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE HOPE CREEK GENERATING STATION LICENSE RENEWAL APPLICATION FOR BOLTING AND FLOW ELEMENT (TAC NO. ME1832)

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