ML20248L024

PNO-78-028:on 780209,main Station Transformer Experienced Fault on B Phase.Fault Resulted in generator-turbine- Reactor Trip.Cleanup & Changeout of B Phase of Main Transformer in Progress

ML20248L024
Person / Time
Site:	Point Beach
Issue date:	02/10/1978
From:	Klingler G, Nolan F, Sniezek J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-78-028, PNO-78-28, NUDOCS 9806100380
Download: ML20248L024 (1)

Text

T08 04AA/.M^/A- (V) f*Y $ fet/AdM-PRELIMINARY NOTIFICATION I/

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(~ February 10, 1978 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-78-28 This preliminary notification constitutes EARLY notice of an event of POSSI3LE 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 on this date.

Facility: Wisconsin Electric Power Company, Point Beach Unit 1 (DN50-266),TwoCreeks,WI

Subject:

UNIT SHUTDOWN - STATION MAIN TRANSFORMER FAULT The licensee reported that at 5:21 p.m., on February 9,1978, the main station transformer experienced a fault on the "B" phase. The fault resulted in a generator-turbine-reactor trip. Cleanup and changeout of the "B" phase of the main transformer is in progress. A spare phase is onsite. The changeout is expected to keep the generator off the line for 4 days. The reactor is in hot shutdown.

The licensee plans to issue a press release. The State df Wisconsin 3

has been notified. ,,

Region III (Chicago) received notification of this event by telephone

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) from the Assistant to the Plant Manager at 8:30 a.m., on February 10,

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1978.

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Contact:

GKlingler, IE x28019 FNolan, IE x28019 JSniezek, IE x28019 Distribution: TransmittedHSt3l/2 d Chairman Hendrie Commissioner Bradford -

Commissioner Kennedy S. J. Chilk, SECY C. C. Kamerer, CA Comissionor Gilinsky (For Distribution)

Transmitted: MNBB'.A P Bldg 2.-l 1 b E. Vol IE L. V. Gossick, EDO

5. H. Hanauer, ED0 E. G. Case, NRR Region A'33 J. J. Fouchard, PA SS Bldg L ky (MAIL)

R. Hartfield, MIPC C. V. Smith, NMSS T. J. McTiernan, 0IA )

l R. G. Ryan, OSP R. Minogue, SD  !

H. K. Shapar, ELD n .

PRELIMINARY NOTIFICATION l

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