05000316/LER-1980-028-03, /03L-0:on 800709,testing of Motor Driven Auxiliary Feedwater Pump During Blackout Conditions Showed Two Safety Injection Relay Timers Exceeded Tech Spec Allowed Tolerance.Caused by Instrument Drift

/03L-0:on 800709,testing of Motor Driven Auxiliary Feedwater Pump During Blackout Conditions Showed Two Safety Injection Relay Timers Exceeded Tech Spec Allowed Tolerance.Caused by Instrument Drift

ML17331A408
Person / Time
Site:	Cook
Issue date:	07/29/1980
From:	Rischling J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17331A407	List: 05000316/LER-1979-026-03, While Reviewing Axial Power Distribution Monitoring Sys,Two Occasions Were Discovered in Which Only One Detector Scan Was Printed Out. Cause Undetermined.Investigation Closed 05000316/LER-1980-028, Forwards LER 80-028/03L-0 & Updated LER 79-026/03X-1 05000316/LER-1980-028-03, /03L-0:on 800709,testing of Motor Driven Auxiliary Feedwater Pump During Blackout Conditions Showed Two Safety Injection Relay Timers Exceeded Tech Spec Allowed Tolerance.Caused by Instrument Drift
References
LER-80-028-03L, LER-80-28-3L, NUDOCS 8008040094
Download: ML17331A408 (1)

LER-1980-028, /03L-0:on 800709,testing of Motor Driven Auxiliary Feedwater Pump During Blackout Conditions Showed Two Safety Injection Relay Timers Exceeded Tech Spec Allowed Tolerance.Caused by Instrument Drift

Event date:
Report date:
3161980028R03 - NRC Website

text

NRg FORM $66 (7.77)

L(CENSEE EVENT REPORT 7

8 CON'T 7

8

'1 Q1 (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 0

0 0

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0 CONTROL BLOCK:

I M I C

C 2

Q2 0

0 9

LICENSEE CODE 14 15 p

p p Q3 4

I I I I QR~Q5 25 26 LICENSE TYPE 30 57 CAT 58 LICENSE NUMBER REPORT ~LQB 0

5 0

0 0

3 1

6 7

0 7

0 9

8 0

6 0

7 2

9 QB 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT OESCRIPTION ANO PROBABLE CONSEQUENCES 010 AFTER THE INSTALLATION OF AN ADDITIONALMOTOR DRIVEN AUX FEEDWATER PUMP (MDAFP)

SUBSEQUENT TESTING OF THE WEST MDAFP DURING BLACKOUT

~p4

~OS

~OB CONDITIONS REVEALED THAT TWO SAFETY INJECTION RELAY TIMERS EXCEEDED THE TOLERANCE ALLOWED BY T.S. 4.8.1.1.2.C.2.

THE AFFECTED PUMPS WERE THE 2W-RHR PUMP AND THE 2

W-CCW PUMP.

~OB 7

8 80 SYSTEM

CAUSE

CAUSE COMP.

VAI.V5 CODE CODE SUBCODE COMPONENTCODE SUBCODE SUBCOQE

~EG Q1'EQ72

~A R

E L

A 1

S 8 L~JGR LiJI 7

8 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERIRP EVENT YEAR REPORT NO.

CODE TYPE NO.

Q17 REPQRT

~80

~

~02 8

~~

~03

~L

~0 21 22 23 24 26 27 28 29 30 31 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDA PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS

+22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER Q79 ~Q79

~Q20

~Q27 Q23

~Q24 PJQ25 33 34 35 36

~

37 40 41 42 43 44 47 CAUSE OESCRIPTION ANO CORRECTIVE ACTIONS +27 THE 2W-RHR PUMP START TIME EXCEEDED THE T.S.

ALLOWABLE VALUE BY 4 PER-CENT WHILE THE 2W-CCW PUMP EXCEEDED THE T.S.

ALLOWANCE BY 1.3 PERCENT.

THE TIMER RELAYS ARE MANUFACTURED BY AGASTAT, MODEL NO. 7012.

THE, TIMERS WERE READJUSTED TO WITHIN ALLOWABLE VALUES.

THIS EVENT WAS 4

ATTRIBUTED TO INSTRUMENT DRIFT",AND NO FURTHER ACTION IS PLANNED.

CT3 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ

~ZO ~ZQ NA 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION QSB

~ll ~00 0

Q37 ~Z Q39 NA 7

8 9

11 12 13 PERSONNEL INJURIES LOCATIONOF RELEASE Q 45 7

8 9

FACILITY

~SP METHOD OF STATUS

% POWER OTHER STATUS ~

DISCOVERY DISCOVERY DESCRIPTION Q32 1

5 H

Q25 ~00 0

Q29 NA

~EQ37 DESIGN CHANGE TEST 8

9 10 12 13 44 45 46 80 80 80 80 7

8 9

11 12 LOSS QF QR DAMAGE TO FACILITYQ43 TYPE

DESCRIPTION

Z Q42 NA 7

8 9

10 PUBLICITY IS ED DESCRIPTIONQ p

~NQ44 8

9 10 J. L. Rischling NAME OF PREPARER 68 69 616-465-5901 PHONE 80 NRC USE ONLY 80 o

0 0

80