ML19308B720

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Advises of Occurence of 90 Day Reportable Event:On 780329, ECCS Activated & Injected Water Into Rcs.Caused by RC-R2 Opening When Vital Bus 2-1V de-energized.Defective Sync Board for 2-1V Inverter Replaced
ML19308B720
Person / Time
Site: Crane 
Issue date: 04/14/1978
From: Geoffrey Miller
METROPOLITAN EDISON CO.
To:
References
TASK-TF, TASK-TMR NUDOCS 8001160789
Download: ML19308B720 (1)


Text

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SUBJECT:

NOTIFICATION OF OCCURRENCE'0F A 90 DAY REPORTABLE EVEilT UtlIT 2 -

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J. G, HERBEIfl L. L. LAWYER G. J. TROFFER 1.

DATE OF OCCURRENCE: EMarck 29, l'9783 2.

TIfiE OF OCCURRENCE:

1437 3.

EVENT NUMBER:

78-22/99X 4.

THIS EVENT IS CONSIDERED REPORTABLE UNDER TECil. SPEC. 3.5.2 Action b.

6.9.2 5.

DESCRIPTIONOFOCCURRENCE(ATTACHPAGESIFREQUIRED):

The ECCS was activated and injected water into the R.C.S., due to RC-R2 opening when Vital Bus 2-1V de-energized.

6.

IMMEDIATE CORRECTIVE ACTION:

Vital Bus 2-lV was re-energized by closing the Alternate Source 480 V A.C. Supply Breaker, thus closing RC-R2, and RCS Pressure Low Channels 2 and 3 for Safety Injection Actuation A & B were bypassed allowing plant recovery.

J.

POSSIBLE LONG TERM ACTION:

Replaced defective Sync Board for 2-lV Inverter. Provide status indication for RC-R2.

8.

R. W. Bensel TO WRITE DRAFT 90 DAY REPORT BY (NAME)

April 14, 1978

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G.P. Miller. /, d l y' 7 9

Unit 2 Superintende / Station Superintendent GPM:pls cc:

M. B. Bezilla J. B. Logan C. W. Smyth l

-W. W. Cotter G. P. Miller M. J. Stromberg R. W. Dubiel J. P. O'Hanlon Control Room Unit'2 l

'J. R. Floyd W. E. Potts GRC Secretary J. F. Hilbish J. L. Seelinger Office File R. M. Klingaman M. R. Shaffer Training Department G. A. Kunder D. M. Shovlin Preparer R. W. Bensel k

I 8001160

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