ML17331A699

LER 81-006/03L-0:on 810316,during Automatic Load Sequence Surveillance Test,Safety Injection Sys Relay Timers Exceeded Tolerance Allowed by Tech Specs.Caused by Instrument Drift. Component Cooling Water Pump 2E Timer Replaced

ML17331A699
Person / Time
Site:	Cook
Issue date:	04/14/1981
From:	RISCHLING J L INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A873	List: ML17326A872 ML17331A699 ML17331A700
References
LER-81-006-03L-01, LER-81-6-3L-1, NUDOCS 8104210358
Download: ML17331A699 (1)

Text

NRC FORM 366 (7-77 I U.S.NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT[OOi3 7 8 CON'T~O 7 8 CONTROL BLOCK: Qi (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6 N 1 0 C C 2 Qs0 0 0 0 0 0 0 0 0 0 0 Qsl 1 1 1 1Q4~QE 9 LICENSEE'CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 Q60 5 0 0 0 3'6 Q70 3 1.6 8 1 8 P 4 1~8]QB 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABI.E CONSEQUENCES

+10 DURING A SURVEILLANCE TEST ON THE AUTOMATIC LOAD SEQUENCE TIMING RELAYS, TWO RELAY~03 TIMERS WERE FOUND TO HAVE EXCEEDED THE TOLERANCE ALLOWED BY T.S.4.8.1.1.2.C.2.4 THESE ARE SAFETY INJECTION SYSTEM TIMERS: THE SI PUMP 2N EXCEEDED THE MAXIMUM 6 ALLOWABLE TIME BY 0.04 SECONDS AND CCW PUMP 2E EXCEEDED THE MAX IMUM ALLOWABLE TIME o 6 BY 3.68 SECONDS.PREVIOUS OCCURRENCES INCLUDE: 50-316/80-28:

79-54, 21 AND 50 31 5/80 1 6 79 30~08 7 8 9 80 7 8 SYSTEM CAUSE CAUSE COMP.VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCOOE~EG Q>>E QEE~AQ73 R E L A Y S Q4~NQEE~Z Qs 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERIRO EVENT YEAR REPORT NO.CODE TYPE NO.Q17 REPoRT~81 U L0006J QW~03+L-Qo 21 22 23 24 26 27 28 29 30 31 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPR~PRIME COMP.COMPONENT TAKEN ACTION ON PLANT METHOD HOURS+22 SUBMITTED FORM SUB.SUPPLIER'ANUFACTURER

+EQER+ZQEE~ZQEO+Z 0 0 0 IT N Qn+YQEE+NQEE A 1 0 9 Qss 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q2I THE OUT-OF-SPECIFICATION VALUES OF THESE TWO TIMING RELAYS IS ATTRIBUTED TO INSTRUMENT DRIFT.THE CCW PUMP 2E TIMER IS BEING REPLACED AS IT EXPERIENCED EXCESSIVE DRIFT THE LAST TIME TESTED.THE SI PUMP 2N TIMER WAS READJUSTED TO WITHIN ALLOWABLE LIMITS.3 THESE TIMERS ARE MANUFACTURED BY AGASTAT MODEL NUMBER 701 2.AN ENG INEERING REV IEW 80 80 80 80 80 NRC USE ONLY o 7 80 Es 0 0 68 69 616 465 5901 4 IS IN PROGRESS CONCERNING THE T S ALLOWANCES AND THIS TYPE OF RELAY TIMERS 7 8 9 FACILITY~3O METHOD OF STATUS%POWER OTHER STATUS~OISCOVE RY DISCOVERY DESCRIPTION Q32[ll~j N Qss~00 0 Qss NA~GQEE SllRYEILLANCE TEST 7 8 9 10 12 13 44 45 46, ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY~LOCATION OF RELEASE Q~Z Q33~ZQ3.NA NA 7 8 9 10 11 44 45 I PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q3B~00 o QET~ZQER NA 7 8 9 11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION Qi~0,0 0 Q4o NA 7 8 9 11 12 LOSS OF OR DAMAGE TO FACILITY Q43 TYPE DESCRIPTION Z Q4, NA 8 9 10 PUBLICITY 7 8 9 10 J.L.Risch1ing e xo4azO'"'""""'"