ML20093M144
| ML20093M144 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 10/03/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NCR-2102, NCR-2285, NCR-2535, NUDOCS 8410190413 | |
| Download: ML20093M144 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 37401 400 Chestnut Street Tower II
\\D E October 3,1984 BLRD-50-438/83-02 U.S., Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNIT 1 - FAILURE OF AIR COMPRESSOR MOTOR -
INGERSOLL RAND - BLRD-50-438/83 FOURTH INTERIM REPORT The subject deficiency was initially reported to NRC-OIE Inspector P. E. Fredrickson on December 9,1982 in accordance with 10 CFR 50.55(e) as NCR 2102. This was followed by our interim reports dated January 7 and May 26,1983 and January 9, 1984. Related NCRs 2285 and 2535 had also been reported and are now being included as part of this 50.55(e) concern.
Enclosed is our fourth interim report. We expect to submit our next report on or about April 22, 1985.
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 k
& fy r
L. M. Mills, Manager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Op.ations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 8410190413 841003 PDR ADOCK 05000 0FFICLtL COPY S
An Equal Opportunity Empicyer I !
ENCLOSURE f
BELLEFONTE NUCLEAR PLANT UNIT 1 FAILURE OF AIR COMPRESSOR MOTOR - INGERSOLL RAND NCRs 2102, 2285 AND 2535 BLRD-50-438/83-02 10.CFR 50.55(e)
' FOURTH INTERIM REPORT Description of S3riciency
-During performance of a fbnctional test on stationary air compressor motor 1RJ-EMOT-002-B, the motor failed during an attempted restart. This was the second instance of this type of failure on this type and size motor (nonconformance report %42). NCRs 2289 und 2S39 dNJ.Sadh the thlF.! Atd fourth failures mspectively, of the same size and type motor.
Bellefonte.is the only TVA nuclear plant to use this size motor and system configuration.
Interim Progress TVA has determined that the environmental conditions in which the compressors were operated contributed to the cited failures. Accordingly, the compressor motors will be replaced with totally enclosed, fan-cooled, class IE, QA motors. In addition, dedicated service-air compressors are being installed to avoid using safety-related essential air compressors for construction service air requirements. However, TVA has not determined if other factors may have contributed to these motor failures. Consequently, TVA is still investigating this deficiency and will supply a final report when the root cause(s) and actions mquired to prevent recurrence have been established.
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