ML17331A158

LER 80-021/03L-0:on 800429,while Performing Surveillance Test,Discovered Bistable for Steam Generator Water Level hi-hi Engineered Safety Feature Setpoint Exceeding Limit W/ Recurrence on 800430.Bistable Replaced & Calibr

ML17331A158
Person / Time
Site:	Cook
Issue date:	05/20/1980
From:	Rischling J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17331A156	List: ML17331A155 ML17331A157 ML17331A158
References
LER-80-021-03L, LER-80-21-3L, NUDOCS 8005270461
Download: ML17331A158 (2)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION lCENSEE EVENT REPORT "CONl ROL BLOCK: (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6 7 8 9 M I 0 LICENSEE CODE C C 2 Qs 14 15 0 0 0 0 0 0 LICENSE NUMBER 0 0 0 0 0 Qs 25 26 4 1 1 LICENSE TYPE 1 1 30 Q4~Qs 57 CAT 58 CON'T

~si """ ~LQso 8 0 0 0 3 1 SQ>~04 2 0~80 Qs 0 5 2 0 8 0 Qs DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 010 DURING NORMAL OPERATION WHILE PERFORMING A SURVEILLANCE TEST IT WAS DISCOVERED

~O3 THAT THE BISTABLE FOR STEAM GENERATOR WATER LEVEL Hi-Hi ESF SETPOINT TURBINE TRIP AND FEEDWATER ISOLATION) HAD DRIFTED HIGH EXCEEDING THE LCO VALUE. T.S.

TABLE 3.3-4 ITEM 5.a. THE APPLICABLE ACTION REQUIREMENT WAS MET.

~os

~OS 80 7 8 SYSTEM CAUSE CAUSE COMP. VAI.VF CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~SM Q>> E Q12 ~EQ>s

'13 1 M S T R 0 Q>s ~SQ>> ~ZQs 20 7 8 9 10 11 12 18 19 SEQUENTIAL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO. CODE TYPE NO.

QTs LERgRP Rssos~ ~80 Q ~02 i QZ ~03 QL U Uo

~ZQs'23 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATI'ACHMENT NPRDQ PRIME COMP. COMPONENT ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER TAIIEN ACTION pJQls ~ZQls ~ZQ20 LQ02" L~J026 F 1 8 P Q26 33 34 35 36 37 40 41 42 43 44 47 CAU E ESCRIPTION AND CORRECTIVE ACTION 027 THE BISTABLE WAS RECALIBRATED AND RETURNED TO SERVICE. ON APRIL 30, 1980, THE BISTABLE TRIP POINT WAS AGAIN CHECKED. THE SETPOINT HAD DRIFTED SIGNIFICANTLY AND THE BISTABLE (FOXBORO-MODEL 63 U-BC-OHEM-F) WAS REPLACED. THE NEW BISTABLE WAS CALIBRATED AND PLACED IN SERVICE.

3 4

7 8 9 80 FACILITY STATUS  % POWER OTHER STATUS Q METHOD OF DISCOVERY DISCOVERY DESCRIPTION 32 s ~<Qss ~l0 10 0

12 Qs NA 44 LAJQ>>

45 46 OPERATOR OBSERVATION 80 7 8 9 13 ACTIVITY CONTENT REL SED OF RELEASE AMOUNT OF ACTIVIT 036 LOCATION OF RELEASE 6 ~~ Q33 ~Z034 NA NA 7 8 9 10 44 45 80 PERSONNEL EXPOSURES 7,8 9 11 PERSONNEL INJURIES 12 13 80 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY 43 TYPE DESCRIPTION

~Z042 NA f0052 7y 7 8 9 10 80 ISSUED MQ44 PUBLICITY DESCRIPTION 0 N NRC USE ONLY 'O s

8 9 10 68 69 80 o 616-465-5901 0 NAME OF PREPARER J. L. RISCHLING IL 0

~ ~