ML20042B823

LER 82-005/03L-0:on 820215,loop 2 Steam Generator Penetration Rupture Disk 1 Leak Alarm Pressure Switch Found Isolated.Caused by Closed Pressure Switch Isolation Valve.Valve Opened

ML20042B823
Person / Time
Site:	Fort Saint Vrain
Issue date:	03/17/1982
From:	Fuller C PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20042B822	List: ML20042B821 ML20042B823
References
LER-82-005-03L, LER-82-5-3L, NUDOCS 8203260187
Download: ML20042B823 (1)

Text

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u.STNUCLEAR REGULATORY COMMISSION NRC PcRu ass 87 77)

• LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI CONTROL BLOCK: l i

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60 68 OOCKET NUMBER 68 69 hvENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10l2l lWith the reactor shutdown and PCRV pressurized to greater than 100 psia, the Loop 2 1 g o 3 3, isteam generator penetration rupture disk No.1 leak alarm oressure switch was found l lOiAi l isolated which could have allowed omssure between the ruuture disk and its associated l g irelief valve to exceed the 5 psig limit specified in LC0 4.2.7(d). This is reportable l l O l6 l per fort St. Vrain Technical Specification AC 7.5.2(b)3. No accompanying occurrences. I l 0 l 7 lN I o affect on public health or safety. Redundant system operable. l 1

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h li lO l lThe reason for the pressure switch isolation valve being closed is not known. Valve I ii li i rias re-opened, safety system piping vented, and alarm cleared. No'further corrective _1 g pction is anticipated or required. .I l

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