05000311/LER-1981-007-03, /03L-0:on 810423,while Attempting to Start Auxiliary Feedwater Pump 22,relay Flags for Phases a & C on Breaker 2B1D Found Dropped.Caused by Drifting of Wipe on Trip Latch.Wipe of Trip Latch Reset

/03L-0:on 810423,while Attempting to Start Auxiliary Feedwater Pump 22,relay Flags for Phases a & C on Breaker 2B1D Found Dropped.Caused by Drifting of Wipe on Trip Latch.Wipe of Trip Latch Reset

ML18086A506
Person / Time
Site:	Salem
Issue date:	05/11/1981
From:	Steele W Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18086A505	List: 05000311/LER-1981-007, Forwards LER 81-007/03L-0.Detailed Event Analysis Encl 05000311/LER-1981-007-03, /03L-0:on 810423,while Attempting to Start Auxiliary Feedwater Pump 22,relay Flags for Phases a & C on Breaker 2B1D Found Dropped.Caused by Drifting of Wipe on Trip Latch.Wipe of Trip Latch Reset
References
LER-81-007-03L, LER-81-7-3L, NUDOCS 8105190161
Download: ML18086A506 (1)

LER-1981-007, /03L-0:on 810423,while Attempting to Start Auxiliary Feedwater Pump 22,relay Flags for Phases a & C on Breaker 2B1D Found Dropped.Caused by Drifting of Wipe on Trip Latch.Wipe of Trip Latch Reset

Event date:
Report date:
3111981007R03 - NRC Website

text

NRC FORM 366 (7-77J.

U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK:..____.. _ _.___. _ _.,,__.l._-__.10 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI 6

~IN IJ Is IG Is 12 10L ol ol -I ol ol ol ol ol -I ol 0101 41 ll ll ll ll©I I 10 7

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LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 58 CON'T

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60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 hEPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

I While attempting to start the No. 22 Auxiliary Feedwater Pump, it was discovered that the relay flags for phases A and Con Breaker 2BlD (the pump's feeder breaker)

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had dropped.

Action Statement 3.7.1.2 was entered at 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />.

Investigation [QJ]J revealed that the breaker would not latch closed.

Previous similar occurrence:

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79-18 ITEJ IIill 7

8 9 [ill]

7 B

SYSTEM CODE IE IB I@

9 10 LERIRO CVENTYEAR REPORT I 8 11 I NUMBER 21 22

CAUSE

CAUSE COMP.

COMPONENT CODE SUB CODE I c I KIT I BIR I KI@ ~

CODE SUBCODE

~@ ~@

11 12 13 1B 19 SEQUENTIAL OCCURRENCE REPORT REPORT NO.

CODE TYPE I I 1010111 1.....-1 10131 L!:..J 23 24 26 27 28 29 30 VALVE SUB CODE L:J@

20 l.=J 31 ACTION FUTURE EFFECT SHUTDOWN

~

ATTACHMENT NPRD-4 PRIME COMP.

SUPPLIER REVISION NO.

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32 COMPONENT MANUFACTURER BO TAKEN ACTION ON PLANT METHOD HOURS ~ SUBMITTED FORM SUB.

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33 34 35 36 37 40 41 42 I GI o 1 s P I@

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS@

43 44 47 o::::IIJ I The wipe of the breaker's trip latch had drifted out of adjustment.

The wipe of the ITTIJ ITTIJ rrm trip latch was reset to the correct travel.

The breaker was tested satisfactory and the Action Statement terminated at 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> on April 23, 1981.

7 8

9 FACILITY IJO' STATUS

% POWER OTHER STATUS v:::;

METHOD OF

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DISCOVERY DISCOVERY DESCRIPTION ~

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0p....c....e~r::..=a~t~o~r_;,O_b~s~e~r~v~a~t_i_o~n..;__ _______ ~

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9 10 12 1"3 ACTIVITY CONTENT

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RELEASED OF RELEASE AMOUNT OF ACTIVITY~

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l£J@) UJ@..... I _N_A ______

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9 10 11 45 46 80 44 LOCATION OF RELEASE @

NA 44 45 80 PERSONNEL EXPOSURES r.;;:;.,

NUMBER

~TYPE

DESCRIPTION

ITI2J I oJ ol 9.lU~-N=A_,__ _____________________

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9 11 12 13 80 PERSONNEL INJURIES

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NUMBER DESCRIPTION6 ETIJ I cl ol ol@

NA 7

8 9 11

~12:;----===--------------------------------------8-"0 LOSS OF OR DAMAGE TO FACILITY 143' TYPE

DESCRIPTION

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NA 7

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1~0:;----"-=-----------------------------------------....180 PUBLICITY C°\\

ISSUED~DESCRIPTION~

NRC USE ONLY IIITJ W~

A I I I I I I I I I I I I I ~

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W. J. Steele PHONE:_6_0_9_-_9_3_5_-_0_9_9_B ____ _

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