United States Nuclear Regulatory Commission - Protecting People and the Environment

GE Nuclear Energy

General Electric Company
175 Curtner Ave., San Jose, CA 95125

August 23, 2002
02-05NRC.DOC
MFN 02-049

Document Control Desk
United States Nuclear Regulatory Commission
One White Flint North
11555 Rockville Pike
Rockville, Maryland 20852-2738

Subject: Main Steam Line Valve Out-of-Service

This letter provides notification of a Reportable Condition under 10CFR 21.21(d) and as an interim report per 21.21(a)(2) for other plants that may be determined to be affected. The basis for this conclusion is that a 1988 GE Nuclear Energy (GE) analysis for Brunswick Units 1 and 2 full power operation with one Main Steamline Isolation Valve (MSIV) Out of Service (OOS) provided to Carolina Power and Light (CP&L) did not adequately address the increased flow induced vibratory loads on the MSIVs to assure they would be able to perform their required safety function which could result in potential offsite exposures in excess of those in 10CFR100.11.

If you have any questions, please call me at (408)925-5362.

Sincerely,

Jason. S. Post, Manager
Engineering Quality and Safety Evaluations

cc: S.D. Alexander (NRC-NRR/DISP/PSIB) Mail Stop 6 F2
G.C. Cwalina (NRC-NRR/DISP/PSIB) Mail Stop 6 F2
J.F. Klapproth (GE-NE)
H.J.. Neems (GE-NE)
PRC File

Attachment: 1. Reportable Condition Evaluation per 21.21(d)

Attachment PDF Icon

 

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