ML20236E520
| ML20236E520 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 05/31/1989 |
| From: | William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-PT21-89 CP-89-012, CP-89-12, TXX-89323, NUDOCS 8906070116 | |
| Download: ML20236E520 (1) | |
Text
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Log # TXX-89323 Fi1e # 10110 i
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90B.3 F:
Ref. # 10CFR50.55(e)
TUELECTRIC
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May 31. 1989 Wilham J. Cabill. Jr.
Earsuone s' ace base. tens
' U. S. Nuclear Regulatory Cottnission Attn: Document Control Desk Washington, D.
C..-
20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
J' DOCKET N05. 50-445 AND 50-446 BROWN B0 VERI HK CIRCUIT BREAKERS SDAR: CP 89-012 (lhTERIM REPORT)
Gentlemen:
On May 1.1989. TU Electric verbally notified the NRC of a potentially reportable deficiency under the provisions of 10CFR50.55(e) concerning an ASEA Brown Boveri 10CFR21 notification to TV Electric involving failure of two 5HK250 circuit breakers to close on conmand.
Appendix D of the ASEA Brown Boveri 10CFR21 Report indicates that TU Electric-has received either 'K-Line" or *HK" circuit breakers from ASEA Brown Boveri.
The failure of the 5HK250 circuit breakers described in the report was attributed to hardened and discolored iubricant on the breaker operating mechanism.
Further evaluation is required to establish the applicability and safety significance of this issue.
TV Electric will provide a final report on this issue prior to Unit 1 fuel load.
Sincerely, William J. Cahill. Jr.
WJH/vid c - Mr. R. D. Martin Region IV f
Resident Inspectors, CPSES (3) 8906070126 990331
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