ML20070A677
| ML20070A677 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 12/01/1982 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8212090323 | |
| Download: ML20070A677 (2) | |
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DUKE POWER GOMPANY P.O. box 23189 CHAMLOTTE, N.C. 28242 IIAL H. TUCKER TELEPHO.TE (704) 37MMI vice rammenry, s,uma..m..m 3
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'g's Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission h
Region II 101 Marietta Street, Suite 3100
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Atlanta, Georgia 30303 Re: Catawba Nuclear Station Unit 2 Docket No. 50-414
Dear Mr. O'Reilly:
Pursuant to 10 CFR 50.55e, please find attached a followup to Significant Deficiency Report SD 414/82-16.
Very truly yours, 0
M Hal B. Tucker RWO/php Attachment cc: Director Mr. Robert Guild, Esq.
Office of Inspection & Enforcement Attorney-at-Law U. S. Nuclear Regulatory Commission P.O. Box 12097 Washington, D. C. 20555 Charleston, South Carolina 29412 Mr. P. K. Van Doorn Palmetto Alliance NRC Resident Inspector 2135 Devine Street Catawba Nuclear Station Columbia, South Carolina 29205 l
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B212090323 821201 PDR ADOCK 05000414 S
CATAWBA NUCLEAR STATION REPORT NUMBER: SD 414/82-16-Follow up REPORT DATE: December 1,1982 FACILITY: Catawba Nuclear Station Unit 2 IDENTIFICATION OF DEFICIENCY:
Large Arc Strike located on the body of a Borg-Warner Corporation valve (Duke Item 9J-220).
INITIAL REPORT:
On August 3, 1982, H. Dance, NRC Region II was notified of the subject deficiency by W. O. Henry, J. H. Lanier, M. Childers, and E. D. Lindsay of Duke Power Company, Charlotte, NC 28242 COMP 0NENT AND/0R SUPPLIER:
The valve in question is a four inch, stainless steel, ASME Class 1, electric motor operated gate valve manufactured by Borg-Warner Corporation, Nuclear Valve Division (Duke Item 9J-220).
DESCRIPTION OF DEFICIENCY:
During the cleaning process, before installation of valve, a large arc strike was discovered on the valve body. NCI 15136 indicated the arc strike was on valve when received at Catawba site. This arc strike was not detected during receiving inspection, because the area was covered by shipping materials. The arc strike appears to be of significant depth.
ANALYSIS OF SAFETY IMPLICATIONS:
This valve was designated for active valve Safety Injection System application 2 nil 62A. Had this arc strike gone undetected and assuming failure of pressure boundary at arc strike area, safety injection flow could potentially be less than the required design value.
CORRECTIVE ACTION:
The deficient valve has been replaced by an equivalent valve of the same Duke item number. The valve in question is to be returned to Borg-Warner Corporation, NVD for further investigation. The investigation is not complete at this time.
A follow-up report will be submitted by July 1, 1983.
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