05000293/LER-1978-054-03, /03L-0 on 781115:during Test of Reactor Water Level,Level Switches L1S-263-57A&B Observed to Trip at Values Greater than Specified in Tech Specs.Caused by Minor Setpoint Drift

/03L-0 on 781115:during Test of Reactor Water Level,Level Switches L1S-263-57A&B Observed to Trip at Values Greater than Specified in Tech Specs.Caused by Minor Setpoint Drift

ML20147C167
Person / Time
Site:	Pilgrim
Issue date:	12/08/1978
From:	Mathis C BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20147C160	List: 05000293/LER-1978-054, Forwards LER 78-054/03L-0 05000293/LER-1978-054-03, /03L-0 on 781115:during Test of Reactor Water Level,Level Switches L1S-263-57A&B Observed to Trip at Values Greater than Specified in Tech Specs.Caused by Minor Setpoint Drift
References
LER-78-054-03L, LER-78-54-3L, NUDOCS 7812180172
Download: ML20147C167 (1)

LER-1978-054, /03L-0 on 781115:during Test of Reactor Water Level,Level Switches L1S-263-57A&B Observed to Trip at Values Greater than Specified in Tech Specs.Caused by Minor Setpoint Drift

Event date:
Report date:
2931978054R03 - NRC Website

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V-] p ] l T)uring perforn.ance of routine surveil. ance test, Reactor Water Level (RpS/pCIS), 1cvel g j switches LIS.263-57A&ll were Observed 'to trip at values greater than those specified in 3 ]3 ) ; Table 3.2.A of t.he T.S.

These switches provide high water isolatfo. of the main steam yg lines when not 'in the run mode and reac tor pressure is greater than 880 pSIG.

Re-y ; dundant switches with proper setpoints were operable, therefore, public health and l

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