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 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 U. S. NUCLEAR REGULATORY COMMISSION (7-77 I LICENSEE EVENT REPORT CONTROL BLOCK: Qi (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6

[OOi3 7 8 9 N 1 0 C LICENSEE'CODE C 2 14 Qs0 15 0 0 0 0 0 0 LICENSE NUMBER 0 0 0 0 25 Qsl 26 1 1 LICENSE TYPE 1 1Q4~QE 30 57 CAT 58 CON'T 3' 1.

~O Q60 5 0 0 0 6 Q70 3 6 8 1 8 P 4 1 ~ 8 ] QB 7 8 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 MAXIMUM 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 80 7 8 9 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 7 8 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION Q17 LERIRO REPoRT EVENT YEAR

~81 21 22 U

23 24 REPORT NO.

L0006J26 QW 27

~03 28 CODE 29 TYPE

+L 30

31 NO.

Qo ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPR~ PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FORM SUB. SUPPLIER 'ANUFACTURER

+EQER +ZQEE 33 34

~ZQEO 35

+Z 36 37 0 0 0 IT 40 41 N

Qn +YQEE 42

+NQEE 43 44 A 1 0 9 Qss 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 4 IS IN PROGRESS CONCERNING THE T S ALLOWANCES AND THIS TYPE OF RELAY TIMERS 8 9

~

7 FACILITY ~3O METHOD OF STATUS  % POWER OTHER STATUS OISCOVE RY DISCOVERY DESCRIPTION Q32

[ll~j 7 8 9 N Qss ~00 10 0

12 Qss 13 NA 44

~GQEE 45 46, SllRYEILLANCE TEST 80 ACTIVITY CONTENT RELEASED OF RELEASE

~Z Q33 ~ZQ3.

AMOUNT OF ACTIVITY NA

~ NA LOCATION OF RELEASE Q 7 8 9 10 11 44 45 80 I PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q3B

~00 o QET~ZQER NA 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION Qi

~0,0 0 Q4o NA 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43 Z Q4, NA 8 9 10 80 PUBLICITY NRC USE ONLY o

7 7 8 9 10 68 69 80 Es

"'""""'" J. L. Risch1ing 616 465 5901 0 e xo4azO' 0