ML20076F076
| ML20076F076 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 05/25/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8306010405 | |
| Download: ML20076F076 (2) | |
Text
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y TENNESSEE VALLEY AUTHegh C pe-CH ATTANOOGA, TENNESSEE 374ot 400 Chestnut Street Tow II 4
4g. /9 May 25 9
BLRD-50-438/82-37 BLRD-50-439/83-08 U.S. Nuclear Regulatory Comission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - FAILURE OF B.I.F. BUTTERFLY VALVE SEATS - BLRD-50-438/82-37, BLRD-50-439/83 FOURTH INTERIM REPORT The subject deficiency was initially reporte(! to NRC-0IE Inspector R. V. Crlenjak on May 11, 1982 in accordance with 10 CFR 50.55(e) as NCR 1819 This was followed by our interim reports dated June 8, and October 29, 1982 and February 8, 1983 Related NCRs 2170, 2186, and 2187 were included in our second interim report. NCR 2231 has since been reported and is now being included as part of this 50.55(e) concern.
Enclosed is our fourth interim report. We expect to submit our next report l
by August 1, 1983 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 D SW
\\
fyt.L.M. Mills, Manager i
Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Comission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1
1100 Circle 75 Parkway, Suite 1500 OFFICIAt coy,/.
Atlanta, Georgia 30339
[g Y 8306010405 830525 PDR ADOCK 05000438 S
PDR j/s An Equal Opportunity Employer
l...
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 1 FAILURE OF B.I.F. BUTTERFLY VALVE SEATS NCRs 1819, 2170, 2186, 2187,2231 BLRD-50-438/82-37, BLRD-50-439/83-08 10 CFR 50.55(e)
FOURTH INTERIM REPORT Description of Deficiency The following butterfly valves, manufacttared by Basics Inflow Incorporated (BIF) a unit of General Signal Corporation, W st Warwicke, Rhode Island, e
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 1RJ-VTAC-50B 3BWO471-00-20 76k38-86163-3 577 N-49445-10 1RJ-VTAC-44B 3BWO'471-00-15 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 deficient valves, along with a sample of other BIF valves of the same design and vintage, were returned to BIF in the "as supplied" condition for inspection and testing. The valves have passed the testing, however, the l
test results have not been formally transmitted to TVA. TVA will submit a l
final report on this deficiency upon receipt, review, and acceptance of BIP's l
test report.
t
,