ML20023B812

LER 83-028/03L-0:on 830331,after Completion of Surveillance Test on Solid State Protection Sys Train a & Review by Maint Supervisor,Sys Declared Inoperable to Troubleshoot Possible Problem W/Safety Injection Reset Time Delay

ML20023B812
Person / Time
Site:	Cook
Issue date:	04/29/1983
From:	Palmer R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20023B804	List: ML20023B803 ML20023B812 ML20023B815 ML20023B819
References
LER-83-028-03L-01, LER-83-28-3L-1, NUDOCS 8305060406
Download: ML20023B812 (2)

Text

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EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h t o 121 l AFTER THE COMPLETION OF A SURVEILLANCE TEST ON THE SOLID STATE PROTECTION S

!a iJi IA (SSPS), A REVIEW BY THE INSTRUMENT MAINTENANCE SUPERVISOR FOUND IT NECESSARY T0 t

! o # 411 DECLARE THE SYSTEM IN0PERABLE TO TROUBLESHOOT A POSSIBLE PROBLEM WITH THE ' SAFETY I .

1. o # sl l INJECTION RESET TIME DELAY RELAY (TD1). THIS CONDITION IS NON-CONSERVATIVE WITH I

!oIs1IRESPECT TO TECHNICAL SPECIFICATION 3.3-1 ITEM 22. THE ACTION REQUIREMENTS WERE MET. I l012IITHIS IS THE FIRST OCCURRENCE OF THIS TYPE. PUBLIC HEALTH AND SAFETY WERE NOT AFFECTED.;

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!.IoilTHE PORTION OF THE SURVEILLANCE TEST PERTAINING TO TD1 WAS IINEDIATELY R lii [UNDER THE DIRECTION OF THE INSTRUMENT MAINTENANCE SUPERVISOR WITH NO PROBLEMS BEING t

, ,,i lF0UND. THIS POSSIBLE PROCLEM WITH TDI WOULD NOT HAVE PREVENTED A SAFETY INJECTION $I)4 i #2i 1 HOWEVER, IT WOULD HAVE PREVENTED MANUALLY RESETTING THE SI, IF AN SI WAS INITIATED. THEl ii4i 4tSSPS 9 TRAIN A WAS DECLARED OPERABLE AND RETURNED TO SERVICE ON 3-31-83. (SEE S SYdU$ *. POWER CTHER STATUS DISCO RY DISCOVERY DESCRIPTION

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NAME OF PREPARER R. A. PALMER Psoys: 616-465-5901

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ATTACHMENT TO LER# : 83-028/03L-o SUPPLEMENT TO CAUSE DESCRIPTION THE PORTION OF THE SURVEILLANCE TEST PERTAINING TO TD1 WAS IMMEDIATELY RETESTED 5 TIMES UNDER THE DIRECTION OF THE INSTRUMENT MAINTENANCE SUPERVISOR WITH NO PROBLEMS BEING FOUND. THIS POSSIBLE PROBLEM WITH TD1 WOULD NOT HAVE PREVENTED A SAFETY INJECTION (SI). HOWEVER, IT WOULD HAVE PREVENTED MANUALLY RESETTING THE SI, IF AN SI WAS INITIATED.

THE SSPS TRAIN A WAS DECLARED OPERABLE AND RETURNED TO SERVICE ON 3-31-83.

ON 4-21-83 THE SURVEILLANCE TEST WAS AGAIN PERFORMED SATISFACTORILY.

DURING THE UPCOMING REFUELING OUTAGE TD1 AND THE ASSOCIATED LATCHING RELAY (K-602) WILL BE INSPECTED. AN UPCATED LER WILL BE SUBMITTED IF ANYTHING UNUSUAL IS FOUND.