ML20040F858
| ML20040F858 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 01/20/1982 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-81 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8202100381 | |
| Download: ML20040F858 (2) | |
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TENNESSEE VALLEY AUTHORITY kC CH ATTANOOG A, TENNESSEE 37401
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' January 20j2199g g 4 q 00 BLRD-50-438/82-04 BLRD-50-439/82-04 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II - Suite 3100 101 Mariet,ta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - BONNET STUDS IMPROPERLY TORQUED ON DECAY HEAT REMOVAL VALVES - BLRD-50-438/82-04, BLRD-50-439/82 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on December 22, 1981 in accordance with 10 CFR 50.55(e) as NCR 1686. Enclosed is our first interim report. We expect to submit our next report by April 22, 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 L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure) e-g Office of Inspection and Enforcement g
U.S. Nuclear Regulatory Commission y
9 Washington, DC 20555 g
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1Q 20 An Equal 00portunity Employer
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j ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1'AND 2 BONNET STUDS IMPROPERLY TORQUED ON DECAY HEAT. REMOVAL VALVES BLRD-50-438/82-04, BLRD-50-439/82-04 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency The following Borg-Warner gate valves (furnished on contract 77K38-86163-8) were found by field inspection to have bonnet. studs which were torqued to values less than required by the applicable vendor drawing (i.e., 160-200 foot-pounds). The valves were manufactured by Borg-Warner of. Van Nuys, California.
Borg-Observed Warner Torque Mark No.
Item No.
Drawing No.
Serial No.
(Ft Lbs) 4 3AWO412-ND-35 636 80140 RB 26165*
50-100 26166 20-100 26167 20-100 26168*
0-180 3AWO412-ND-45 638 80130 RD 26598 20-180
" Valves in operation The other valves (26599, 26600, and 26601) referenced on NCR 1686 have been determined to be acceptable.
Interim Progress f
The valves which are installed and operational have been retorqued to the required value. TVA is investigating the cause of the deficiency.in order to determine the necessary course of action. TVA will provide additional information on this deficiency in our next report.
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