PNO-III-80-111, on 800609,during Power Operation,Operator Found Improper Breaker Lineup of Main Control Board.Lineup Was Immediately Corrected.Licensee Is Investigating
| ML19351D554 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 06/10/1980 |
| From: | James Smith, Warnick R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| References | |
| PNO-III-80-111, NUDOCS 8010100408 | |
| Download: ML19351D554 (1) | |
,
N Date* 6/10/80-
.o PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURENCE--PNO-III-80-111 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance.
The information presented is as initially received without verification or evaluation and is basically all that is known by IE staff as of this date.
Facility: Wisconsin Electric Power Company Point Beach 1 and 2 (Docket Nos. 50-26.6; 50-301)
Two Creeks, WI
Subject:
BREAKER LINEUP ERROR ON ESF BUSES During a routine walkdown of the main control board on June' 9, 1980, a reactor
' operator discovered the two ESF buses, A0-5 and A0-6, were tied together and the breaker that normally feeds A0-5 was open. The Technical Specifications do not permit reactor operation with this configuration.
Upon identification the misalignment was immediately corrected.
At the time this was discovered Unit I was operating at 80% power and Unit 2 was operating at 100% power.
The two emergency diesel generators were each lined up to supply their respective ESF bus and would have supplied emergency power if required.
The licensee is investigating when and how the misalignment occurred. The resi-dent inspector is following this matter closely.
Neither the licensee nor Region III plan to make a news r,elease at this time.
The State of Wisconsin is being notified'.
The licensee informed the NRC resident inspector of the matter at 8:30 a.m.
on June 10, 1980. Following discussion of the reportability of the event, the licensee notified the NRC operations center via the Red Phone, t
Rld
Contact:
J. D. Smith, RIII, 414/755-2300 R. F. Warnick RIII, 932-2565 dlW R, F. Heishman, RIII, 932-2540 Distribution:
Transmitted H St. b) '
Chairman Ahearne Commissioner Hendrie S. J. Chilk SECY Coranissioner Gilinsky Comissioner Bradford C. C. Kamerer, CA Commissioner Kennedy (For Distribution)
Transmitted:
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W. J. Dircks, EDO H. R. Denton, NRR C. Michelson, AE0D R. H. Vollmer, NRR Landow (6 min /page)
J. J. Fouchard, PA R. J. Mattson, NRR J. J. Cummings, 0IA N. M. Haller, MPA D. F. Ross, NRR R. G. Ryan, OSP D. Eisenhut, NRR MAIL H. K. Shapar, ELD S. H. Hanauer R. Mirogue SD IE:X00S Lilste Bldg. /ro6 Document Mgt. Br. (For PDR/LPE J. G. Davis, NMSS Regional Offices R. J. Budnitz, RES W:.~~ - f: 07
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