05000267/LER-1981-035-03, /03L-0:on 810511,w/plant at 70% Thermal Power During a Diesel Generator Set Surveillance Test,B Engine Tripped & Declutched.Caused by Failed Exhaust Temp Switch. Switch Repaired.Test Completed.Generator Returned to Svc

/03L-0:on 810511,w/plant at 70% Thermal Power During a Diesel Generator Set Surveillance Test,B Engine Tripped & Declutched.Caused by Failed Exhaust Temp Switch. Switch Repaired.Test Completed.Generator Returned to Svc

ML20009E701
Person / Time
Site:	Fort Saint Vrain
Issue date:	06/10/1981
From:	Gehm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20009E687	List: 05000267/LER-1981-035, Forwards LER 81-035/03L-0.Detailed Event Analysis Also Encl 05000267/LER-1981-035-03, /03L-0:on 810511,w/plant at 70% Thermal Power During a Diesel Generator Set Surveillance Test,B Engine Tripped & Declutched.Caused by Failed Exhaust Temp Switch. Switch Repaired.Test Completed.Generator Returned to Svc
References
LER-81-035-03L, LER-81-35-3L, NUDOCS 8107280370
Download: ML20009E701 (1)

LER-1981-035, /03L-0:on 810511,w/plant at 70% Thermal Power During a Diesel Generator Set Surveillance Test,B Engine Tripped & Declutched.Caused by Failed Exhaust Temp Switch. Switch Repaired.Test Completed.Generator Returned to Svc

Event date:
Report date:
2671981035R03 - NRC Website

text

U. S. NUCLE AI) RE2ULATORY COMMISSION NRClIOdty 8777#

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• I o i 2 I l On May 11. 1981, with the olant ooeratine at 70': thermal never and 2 30 MJe. durino l

10131 I normal surveillance testing on " A" diesel generator set, f ailure of the tempe rature l

[Ol. 1 I switch for "B" engine exhaust manifold resulted in a trip and declutch of "B" engine. l l

l 0 I s I l Degraded.aode of LCO 4. 6. l(d).

Reportable per Fort St. Vrain Technical Specification l l0(6l l AC 7. 5. 2(b)2. No accompanving occurrence.

No effect on public health or s'afety.

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