ML20028C188

LER 82-102/03L-0:on 821209,during Surveillance Test on Automatic Load Sequence Timing Relays,Two Timers Exceeded Tech Spec Tolerance.Caused by Component Cooling Water Pump 2E Timer out-of-spec.Timers Calibr

ML20028C188
Person / Time
Site:	Cook
Issue date:	12/28/1982
From:	Palmer R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028C187	List: ML20028C186 ML20028C188 ML20028C191
References
LER-82-102-03L-01, LER-82-102-3L-1, NUDOCS 8301070181
Download: ML20028C188 (1)

Text

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S DOCKET NUM8ER EVENT DATE 74 7b REPORT DATE 80

' EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Oto IO I 2 l l DURING A SURVEILLANCE TEST ON THE AUTOMATIC LOAD SEQUENCE TIMING I R

o,,,; TIMERS WERE FOUND TO HAVE EXCEEDED THE TOLERANCE ALLOWED BY TECHNICAL SPECIFICATION l

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THESE ARE ESF TIMERS: CCW PUMP 2E EXCEEDED THE MAXIMUM ALLOWABL l

o ,si TIME BY 0.09 SECONDS AND THE CCW PUMP 2W EXCEEDED THE MAXIMUM ALLOW I

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, o es i l SECONDS. THE PUBLIC HEALTH AND SAFETY WERE NOT AFFECTED.

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h iiiollTHE CCW PUMP 2E TIMER OUT OF SPECIFICATION VALUE IS ATTRIBUTED TO INSTRUMENT DRIFT. I tiii1 lTHE TOGGLE SWITCH ASSEMBLY ON THE CCW PUMP 2W WAS FOUND TO NEED REALIGNMENT. i THE I

gI TIMERS WERE CALIBRATED AND VERIFIED TO OPERATE WITHIN THE ALLOWABLE LIMITS.

PRESENTLY i i , ,3i lAN ENGINEERING REVIEW IS BEING CONDUCTED ON A NEW TYPE OF SOLID STAT DEPENDINGl 0

iii411 N THE RESULTS OF THIS REVIEW, THE EXISITING RELAYS MAY BF RFPIACFD. l l 8 9 ST S *. POWE R

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, NAME OF PREPARER PHONE;

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