05000267/LER-1979-051-03, /03L-0:on 791017,at 5% Power,Sys 21 Loop 1 Surge Tank Level Decreased to Low Level Setpoint,Tripping Loop 1 Bearing Water Pumps & Making Circulators Inoperable.Caused by Procedural Inadequacy & Operator Error

/03L-0:on 791017,at 5% Power,Sys 21 Loop 1 Surge Tank Level Decreased to Low Level Setpoint,Tripping Loop 1 Bearing Water Pumps & Making Circulators Inoperable.Caused by Procedural Inadequacy & Operator Error

ML19210E329
Person / Time
Site:	Fort Saint Vrain
Issue date:	11/16/1979
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19210E328	List: 05000267/LER-1979-051, Forwards LER 79-051/03L-0 05000267/LER-1979-051-03, /03L-0:on 791017,at 5% Power,Sys 21 Loop 1 Surge Tank Level Decreased to Low Level Setpoint,Tripping Loop 1 Bearing Water Pumps & Making Circulators Inoperable.Caused by Procedural Inadequacy & Operator Error
References
LER-79-051-03L, LER-79-51-3L, NUDOCS 7912040341
Download: ML19210E329 (1)

LER-1979-051, /03L-0:on 791017,at 5% Power,Sys 21 Loop 1 Surge Tank Level Decreased to Low Level Setpoint,Tripping Loop 1 Bearing Water Pumps & Making Circulators Inoperable.Caused by Procedural Inadequacy & Operator Error

Event date:
Report date:
2671979051R03 - NRC Website

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LICENSEE EVENT REPORT CONTROL BLOCK: l l

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60 61 DOCKET NUM8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

['o'TTl l on october 17, 1979, while operating at 5% reactor power, System 21 Loop 1 surge tank o

o a l level decreased to the low level trip setpoint which tripped the Loop 1 bearing water l l pumps, making Loop 1 circulators inoperable per Fort St. Vrain Technical Specification l o

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