05000237/LER-1978-057-03, /03L-0 on 781013:2-1402-4b Flow Test Valve Failed to Close Fully Against Pump Pressure.Caused by Value Being Inadequately Lubricated

/03L-0 on 781013:2-1402-4b Flow Test Valve Failed to Close Fully Against Pump Pressure.Caused by Value Being Inadequately Lubricated

ML20027A331
Person / Time
Site:	Dresden
Issue date:	11/09/1978
From:	Achterberg J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17173A365	List: 05000237/LER-1978-057, Forwards LER 78-057/03L-0 05000237/LER-1978-057-03, /03L-0 on 781013:2-1402-4b Flow Test Valve Failed to Close Fully Against Pump Pressure.Caused by Value Being Inadequately Lubricated
References
LER-78-057-03L, LER-78-57-3L, NUDOCS 7811160115
Download: ML20027A331 (2)

LER-1978-057, /03L-0 on 781013:2-1402-4b Flow Test Valve Failed to Close Fully Against Pump Pressure.Caused by Value Being Inadequately Lubricated

Event date:
Report date:
2371978057R03 - NRC Website

text

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U.S. NUCLEAR 4 REGULATORY cOf.l?.tl5SION LICENSEE EVENT REPORT CONTROL BLOCK: l l

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lh (PLEASE PR:NT OH TYPE ALL REQUIRED INFCRMATIONI l

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'J LICENSEE CODE 14

5 LictP.SE NL?.?4ER 25 2t>

LICENn TYPE JQ 57 CAT 63 CON'T l3!11 se$RC, l L@l 0151010 ] O l 21317 l@l 1 l 01 I l 317 l 8 l@l 111 l 01917 l 8 l@

d u3 61 DOCKET NU?.tC ER na 63 EVENT C ATE 74 75 REPCRT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

ol2l l During normal operation, the 2-1402-4B flow test valve failed to close fully against l 5 a i3 ; l pump pressure while performing DOS 1400-1, core spray system pump operability.

The l

1 o l.1 l l core spray pump was secured and the vs.ve closed fully.

Safety significance was l

1Oisl l minimal since the valve is normally closed during core spray operation.

This event

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6 o Is } l occurred again on 10/23/78 and 10/24/78.

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SY S TE '.1

CAUSE

CAU E COMP.

VALVE CODE CODE SUSCCOE COMPONENT CODE SUSCODE SUSCOOE L IV lE lX l@ Q@ l Xl@

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oi9i 4

3 1;

i; te 13 03 CEOUENTI AL OCOURAENCE RE* ORT REVISION gem ao s'.'EN T Y E A R R EPOR T NU.

CODE TYPE N O.

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33 33 36 37 40 41 42 43 44 4y CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 i i e o l l Vlv. stem not adequately lubricated.

Vlv. onerator disassembled and no anomalies I

.i j l found. After reassembiv viv. was.successfully cveled.

Bkr. contactors were cleaned I

,i l and checked torque sw. settings were verified prior to cycling. V1v. 1402-4B was I

i,;3l l scheduled for lubrication in Oct, but failed before lube performed. All frequently

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, i4, l operated accessible ECCS vivs. will be lubed on a 6 mo. program.

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% PoWE R oTH ER STATUS DIS V RY DISCOVERY EScaiPTION NA l

l B!@l' Surveillance testing I

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=ELEAsEo p.,etEASE l

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116i l ZI(30) l Z @l NA 4 3 1C 11 44 45 30 PERSC?dNEL EXPOSURE 3 1

NUMdER TYPE

DESCRIPTION

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1. ERSON"JE L INJUPIE3 NUYBER OESCRIPTION

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ESCR,PTioN @ 6 NRC USE ONLY

, Su E 8 'l LHfbl

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