ML20054G489
| ML20054G489 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 06/08/1982 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8206210604 | |
| Download: ML20054G489 (2) | |
Text
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TENNESSEENALLEY AUTHORITY
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3I ATTfdl'OdGA, TENNESSEE 374o1 400 Chest g Street Tower II e\\*
g$ 'psq \\D June 8, 1982 BLRD-50-438/82-37 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLAhT UNIT 1 - FAILURE OF B.I.F. BUTTERFLY VALVE SEATS -
BLRD-50-438/82 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Celenjak on May 11, 1982 in accordance with 10 CFR 50.55(e) as NCR 1819 Enclosed is our first interim report. We expect to submit our next report by November 1, 1982. We consider 10 CFR Part 21 applicable to this deficiency.
If you have any questions concerning this matter, please get in touch with R.'H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY ps u L. M. Mills, Manager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission l
Washington, DC 20555 e.
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,.-JDk An Equal Opportunity Employer
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ENCLOSURE ~
BELLEFONTE NUCLEAR PLANT UNIT 1 FAILURE OF B.I.F. BUTTERFLY VALVE SEATS NCR 1819 BLRD-50-438/82-37 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency The following butterfly valves, manufactured by BIF, a unit of General Signal Corporation, West Warwicke, Rhode Island, which are used in the Essential Air System were determined to be leaking in excess of an acceptable rate.
BIF Serial -
UNID Number Mark No.
Contract No.
Item No.
Number 1 RJ-VTAC-50B 3BWO471-00-20 76K38-86163-3 577 N-49445-10 1 RJ-VTA C-44B 3BWO471-00-15 76K38-86163-3 576 N-49444-7 1RJ-VTAC-27A 3BWO471-00-15 76K38-86163-3 576 N-49444-2 Further investigation revealed that the rubber seats had failed because of,
- damage, i.e.,
the seats were cut and portions were missing.. The cause of the damage was not apparent.
Interim Progress The manufacturing representative has visited the site and reviewed the problem. The valves will be returned to BIF. They will determine the cause of the failure and modify / repair the valves as required.
TVA has requested BIF to furnish a listing of all valves of this type furnished to TVA.
TVA will provide additional information upon receipt of this listing and the cause of the failure from BIF.
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