ML20064M141
| ML20064M141 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 02/08/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8302150473 | |
| Download: ML20064M141 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II February 8, 1983 aw BLRD-50-438/83-11
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-3 U.S. Nuclear Regulatory Connaission
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Region II 3
Attn: Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 cm C
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNIT 1 - GENERAL ELECTRIC MOTORS EXCEED RATED LOAD
- BLRD-50-438/83 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on January 10, 1983 in accordance with 10 CFR 50.55(e) as NCR 1976. Enclosed is our first interim report. We expect to submit our next report by July 25, 1983 If you have any questions, please get in touch with R. H. Shell at FTS 858-2683.
Very truly yours, TENNESSEE VALLEY AUTHORITY
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L. M. Mills, Manager Nuclear Licensing i
Enclosure cc: Mr. Richard C. DeYoung, Director (Enclosure) l Office of Inspection and Enforcement U.S. Nuclear Regulatory Comunission Washington, D.C.
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8302150473 830208 l
05000 38
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' ENCLOSURE
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NCR 1976 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency Current readings taken on two 150 hp General Electric (GE) induction motors supplied by Ingersoll. Rand (I-R), Chamblee, Georgia, exceeded their nameplate value of 195 amperes. The increased current could be partially attributegtoTVAoperatingthecomgressorsatadischargepressureof 110 lb/in instead of the 100 lb/in originally specified in the contract.
Interim Progress A calibrated oscillograph measurement indicating a 20% current' variation was taken on an identical compressor-motor combination. An average current reading of 2g8 amperes was taken at the same time at a discharge pressure of 110 lb/in. TVA will forward this additional information to I-R for their technical review and consnent.
TVA has ex'perienced two previous failures of other compressor motors of the same type at the site and h'as documented these failures in NCRs 1942 and 2102. The preliminary findings M the GE motor-repair facility personnel is that it appears that neither previous failure was caused by overload, unbalance, or single-phasing.
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