ML19323D002

LER 80-018/03X-1: on 790630,w/reactor Operating at Approx 1.4%,dual Position Indication for HV-4153 Was Observed. Cause Not Determined.Investigation Revealed Problem Was Isolated Occurrence

ML19323D002
Person / Time
Site:	Fort Saint Vrain
Issue date:	05/09/1980
From:	Gahn J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19323C995	List: ML19323C994 ML19323D002
References
LER-80-018-03X, LER-80-18-3X, NUDOCS 8005190516
Download: ML19323D002 (1)

Text

NEC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7-77) '

LICENSEE EVENT REPORT 8006190516 O =~1-emCei 1 i i i i i ie 6

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80 7 4 60 61 00CK ET NUM8 E R EV ENT QATE s EVENT CESCRIPTION AND PROBABLE CONSEQUENCES h lo { 2 l lWith the reactor operating at approximatelv 1.4%, olant ope.ations oersonnel observed I go;3; j a dual position indication for HV-4153 (tie between circulating water system and ser- 1 io94l lvice water system). Subsequent investigation revealed the valve was closed, but not l 10 i s l I fully seated, and was not operable from its associated hand switch. Because of Final l lo is l l Safety Analysis Report references in basis of LCO 4.2.4, this is reportable under de- l 1017l I graded mode operation per Technical Specification AC 7.5.2(b)2. No accompanvine occur 4 i o i s ! t rence or probable consequences. No affect on public health or safetv. I 7 8 9 30 CE CCOE SL8C E COMPONENT CCDE SLBCCOE S E loIsl 7 8 I a I F l@ [E_j@ l B lh l V l A l L l V l E l X lh l B l@ [D_J 9 10 D @

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,,, SEQUENTIAL OCCURRENCE REPCRT R EVIS4CN LER RO EV ENT YE AR REPORT NO. CODE TYPE NO.

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40 41 42 CAUSE CESCRIPTION AND CORRECTIVE ACTIONS h l: l o i lCause of occurrence not determined. Subsequent attemots to evele the valve were suc- I giii;lcessful. Investigation by Electrical and Maintenance personnel re.vealed that this l lil2l l problem was an isolated occurrence. No valve ,aintenance was necess m . No further I til,l l corrective action is anticipated or recuired.

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$ $ %PCWER OTHER STATUS 315 RY DISCOVERY CESCRIPTICN l .15 l lC l@ l 0l 0 l 1l@l N/A l l A l@l Ocerator Observation l A TtVITY CC TENT RELEASED OP RELEASE AMOUNT OP ACTIVITY LOCATION OP RELEASE li Is 4l 3Iz l @ l 10zl@l N/A 7

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