ML19323D016

LER 79-055/03X-1: on 791026,during Scheduled Surveillance Testing,Check Valve V-22370 Was Found to Be Stuck Open. Cause Not Identified.Valve Was Opened & Inspected,Then Cleaned & Lubricated

ML19323D016
Person / Time
Site:	Fort Saint Vrain
Issue date:	05/09/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19323D010	List: ML19323D008 ML19323D016
References
LER-79-055-03X-01, LER-79-55-3X-1, NUDOCS 8005190537
Download: ML19323D016 (1)

Text

NT.C FORM 366 U.S. NUCLEAR REGULATbRY COMMISSION 87 77)

LICENSEE EVENT REPORT [g%%

l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

CONTROL BLOCK: l i

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lh lo lil8 IC 7 9 10LICENSEE I r l sCOCE I V l 1 l@l 010 l- 10101010 14 15 LICENSE NUMBER l0 l- l010 l@l4 l1LICENSE 25 26 l1 1210 TYPE Jo l@l $7 CAT l

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i CON T lolil 3e[,c[ l L @l 0 l 5 l0 l 010 l 2 l 617 @ll 1012 l6 l 7 l9 l@l 0l REPORT 74 75 5l 0lDATE9l 8l 0l@80 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PRCBABLE CONSEQUENCES h lol2l l During scheduled surveillance testing, a check valve (V-22370) was found to be stuck [

l o 13 l lopen. This event degraded the firewater booster pumos for helium circulator drive. I I

I o I .: I l The reactor had been operated at power since the last demonstrated operability of the l l l

Io!sl l booster pumps . LCO 4.2.19 recuires that one booster pump be ooerable when the reactor l ,

1 I o 16 I l is at power. It must be assumed that the reactor was coerated at oower with degraded I l l

10171 l boos te r pucos. There was no ef fect uoon the health or safety of the public. Re- l l o i a I l dundant systems were available. Reportable per Technical Soecification AC 7.5.2(b)2. I 7 g 9 80 E CODE SUSC E COMPONENT CODE SUSC DE SU E i lo191 7 S l C l B l@ lE l@ lB l@ l Vl Al Ll Vl El X]h l Cl@ l Al@

9 10 11 12 13 18 19 20 l

,_ SEQUENTIAL OCCURRENCE REPCRT REVISION LE A RO EVENT YEAR REPORT NO. CCOE TYPE N O.

@ sug aer I 71 91 l-l 23 l Ol 51 Sl 24 I/l l 013 l l_XJ l-l l ll 21 22 26 27 23 29 30 31 32 T K N ANON O P NT VET MCURS S8 e FOR 8. SU #L E MANUF C RER <

l33X l@l34X l@ l35Z l@ l36 Zl@ l0l0l0l0l lYl@ l42 Nl@ l43Nl@ lW l0 l3 l047l @ !

31 40 41 44 I CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I i I a l l The cause of the valve malfunction was not identified. At the time of the event, the l l

I m Ivalve was rapped sharoly which freed it for operation. The valve was ocened and in- I 1il2l lspected, but no specific cause for sticking was found. The valve and shaf t were l l l1l l cleaned and lubricated. The valve is a Walworth 4 inch check valve, body Model WO8 l 1iI4 i Iwith a R13 disc. I 7 8 9 90 STA %PCWER CTHER STATUS 315 O RY DISCOVERY CESCRIPTICN l3l@lOperatorObservation l1 l 5 l l G l@ l0 l 0 l0 l@lN/A l l ACTIVITY CO TENT

• ELEASED ^P RELEASE AMCUNT OF ACTIVITY LOCATION CP RELEASE li l6 l l Z j h lZ lgl N/A l l N/A l 7 3 9 to 11 44 45 80 PERSCNNEL EXPCSURES NUMBER TYPE D ESCRIPTION

• l i l 71 10101 O l@l Z l@l N/A l

, ER$c~~EL

' % u'!,ES '2 8 NUVeER CESCRIPTICN lt la l8 l90 l 0 l 0 l@l12N/A 7 11 l

80 LOSS OF CR DAMAGE TO FACILITY TY8E OESCRIPTION li 191d l9 Z l@l10N/A 7

l 80 DE CRIPTION NRC USE CNLY ,

ISSUE 1:101 l N @l N/A I IIIIIIIIIIIIli

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