United States Nuclear Regulatory Commission - Protecting People and the Environment

SCE&G
A SCANA COMPANY

   Stephen A. Byrne
Vice President, Nuclear Operations
803.345.4622
   March 15, 2001
RC-01-0060

Document Control Desk
U. S. Nuclear Regulatory Commission
Washington, DC 20555

Gentlemen:

Subject: VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO.50/395
OPERATING LICENSE NO. NPF-12 FINAL REPORT PURSUANT TO 10 CFR PART 21 (SSH 2000-001)

South Carolina Electric & Gas (SCE&G) submits this letter in accordance with the requirements of 10 CFR 21.21 (a)(2) as a final report of an identified defect which was potentially associated with a substantial safety hazard.

On 10/12/00, at 0630 hours, visual inspection revealed small amounts of boron buildup on the weld between the vessel nozzle and the hot leg pipe. Within hours, the suspect area was cleaned and a dye penetrant (PT) examination of the pipe identified a 4 inch indication at the weld between the hot leg piping and the reactor vessel nozzle. The weld is located approximately 3 feet from the vessel in pipe near the nozzle. The indication was located about 17" from the top of the pipe. This pipe has a nominal inside diameter of 29 inches and is approximately 2.5 inches thick.

Subsequent ultrasonic examination from the inside diameter identified an axial flaw less than 3 inches long. The same examination determined that the original indication was not the source of the leak.

The interim 10 CFR Part 21 report (RC-00-0368) was submitted to allow additional evaluation and cause determination.

NUCLEAR EXCELLENCE - A SUMMER TRADITION!

SCE&G I Virgil C. Summer Nuclear Station ? P.O. Box 88 ? Jenkinsville, South Carolina 29065 ? T (803)345.5209 ? www.scana.com

SC E&G Engineering review of the Root Cause Evaluation Report for potential 10 CFR Part 21 concerns, has determined that a Significant Safety Hazard did not exist. Attached is the engineering justification for this position.

Should you have any questions, please call Mr. Jeffrey Pease at (803) 345-4124.

Very truly yours,



Stephen A. Byrne

JWP/SAB/dr
Attachment

cc: N. O. Lorick
N. S. Cams
T. G. Eppink
R. J. White
L. A. Reyes
K. R. Cotton
J. B. Knotts, Jr.
NRC Resident Inspector
G. G. Williams
NSRC
RTS (SSH 2000-001)
File (818.18)
DMS (RC-00-0060)

Attachment 1 PDF Icon

 

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