ML19331E018

LER 80-032/03L-0:on 800725,during Performance of Surveillance Procedure 6.2.2.2.1,isolation of HPCI Steam Line Occurred.Cause Not Fully Determined.Probable Cause Due to Transient in Common Sensing Line

ML19331E018
Person / Time
Site:	Cooper
Issue date:	08/22/1980
From:	Lawrence L NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19331E016	List: ML19331E015 ML19331E018
References
LER-80-032-03L, LER-80-32-3L, NUDOCS 8009050203
Download: ML19331E018 (1)

Text

.NRdFORM 366 U. S. NUCLE AR REGULATORY COMMISSION 31-fU ')lh LICENSEE EVENT REPORT CONTROL 8 LOCK: l l l l l l  ! (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 10 lil8 l3 N l E 7

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7 8 60 61 COCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBA8LE CONSEQUENCLS h I o 12 I Durine nerformance of surveillance procedurp 6_2_2_2_1_ AD A th e a r Teval hneefnnr1/ I I o i 31 Calibration Test, a HPCI isolation occurred at about the same time as NB,I-LIS-83A I 10141 kas returtud to service. The isolation was immediatelv repet and HPCI van nonrnhia_ l 10 I S I All remainine ECCS Systems were onerable. This event hnd nn efface nn niihlic han1*h I I o 16 I lana anforv. l 10171 l l 10181! l 7 8 9 00 SYSTEu CAUSE CAUSE COMP. VA LV E CODE CODE SUSCODE COVPONENT CODE SU8 CODE SUSCODE R lS l Fl @ IX l@ l C l @ lI l N l S l T l R I U l@ (_Sj @ [_Z_j @

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36 40 43 42 4J 47 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS Iilol The cause of the occurrence may have been caused bv a transient in the common sens- 1 I i 1 i 1 Ang line introduced by opening the isolation valve prior to the pressurizine val' e -

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NAVE OF PREPARER L. I. Lawrence PHONE:

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