ML13109A551

Email, Draft Request for Information Core Plate Hold Down Bolt Stress Analysis

ML13109A551
Person / Time
Site:	Cooper
Issue date:	04/19/2013
From:	Lynnea Wilkins Plant Licensing Branch IV
To:	Mccutchen E Nebraska Public Power District (NPPD)
Wilkins L
Shared Package
ML13109A548	List: ML13109A551
References
TAC ME9550
Download: ML13109A551 (1)

Text

From: Wilkins, Lynnea To: McCutchen, Edward L.

Cc: Lent, Susan; Burkhardt, Janet

Subject:

DRAFT: RAIs for Cooper Nuclear Station Re: Core Plate Hold Down Bolt Stress Analysis (ME9550)

Date: Friday, April 19, 2013 3:14:08 PM Attachments: ME9550 Email RAIs 2.docx Ed, By letter dated January 16, 2012, the Nebraska Public Power District (NPPD or the licensee), submitted a report on the stress analysis of the Cooper Nuclear Station (CNS) core plate rim bolts. This report was submitted in accordance with License Renewal Commitment NLS2009100-1, as documented in NUREG-1944, whereby the licensee committed to perform an analysis of the CNS core plate rim bolts to demonstrate the adequacy of the bolts considering the loss of bolt pre-load experienced during the period of extended operation (PEO) and submit this analysis at least two years prior to entering the PEO.

The NRC staff has determined that additional information specified in the attached Request for Additional Information (RAI) is needed for the staff to complete its evaluation.

Please contact me if a clarifying teleconference is needed for the attached RAI.

Thanks Lynnea Lynnea Wilkins, Project Manager Fort Calhoun Station, Unit 1 Cooper Nuclear Station Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation US Nuclear Regulatory Commission Phone: 301-415-1377