ML20099K934
| ML20099K934 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 11/07/1984 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-84, REF-PT21-85-011-000 PT21-85-011-000, PT21-85-11, NUDOCS 8411290629 | |
| Download: ML20099K934 (2) | |
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w TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II BLRD-50-438/84-52 BLRD-50-439/84-48 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 UNITS 1 AND 2 - DEFECTIVE WIRING CONNECTIONS IN AUMA MOTOR OPERATORS - BLRD-50-438/84-52 AND BLRD-50-439/84 FIRST INTERIM REPORT The subject deficiency was initially mported to NRC-0IE Inspector P. E. Fredrickson on October 12, 1984 in accordance with 10 CFR 50.55(e) as NCR 3527. Enclosed is our first interim report. We expect to submit our next report on er about March 8,1985. We consider 10 CFR Part 21 applicable to this deficiency.
If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY
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7 J. W. Hufham, Manager Licensing and Regulations 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 Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 h
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 DEFECTIVE WIRING CONNECTIOS IN AUMA MOTOR OPERATORS BLRD-50-438/84-52, BLRD-50-439/84-48 10 CFR 50.55(e)
NCR 3527 FIRST INTERIM REPORT
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Description of Deficiency A condition was idestified at Bellefonte Nuclear Plant (BLN) in which vendor-installed wires had fallen out of their respective terminal lugs on the motor operators for valves 1-KE-IFCV-056-B and 1-KE-IFCV-537-B. Further investigation has revealed that a variety of deficiencies exist with the vendor wiring connections in the motor operators of all 16 of the essential raw cooling water (ERCW) system strainer backwash valves. These deficiencies include bad or incomplete crimps, wrong terminal lug sizes, misapplication of crimping tools, and improper insertion of wire into terminal barrels.
The affected valves are located in the intake pumping station (IPS) at BLN.
There are eight valves per unit. The valves and motor operators were supplied to TVA by the Jamesbury Corporation, Worcester, Massachusetts. The motor operators were manufactured by Auma Actuators, Incorporated, Germany.
Interim Progress TVA is still in the process of investigating the possible corrective actions for the subject deficiency.
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