05000348/LER-1978-037-03, Vacuum Pump Kept Tripping on Low Flow.Cause Not Stated.Vacuum Pump Replaced.Flow Trip Setpoint Not Adjusted.Design Change to Add Second Pump in Parallel Has Been Implemented

Vacuum Pump Kept Tripping on Low Flow.Cause Not Stated.Vacuum Pump Replaced.Flow Trip Setpoint Not Adjusted.Design Change to Add Second Pump in Parallel Has Been Implemented

ML19210D022
Person / Time
Site:	Farley
Issue date:	11/14/1979
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19210D012	List: 05000348/LER-1978-018-03, Diesel Generator IC Failed to Start.Caused by Solenoid Valves Sticking Due to Corrosion Particles.Air Start Solenoid Valves Cleaned & Tested.Design Change Implemented 05000348/LER-1978-037-03, Vacuum Pump Kept Tripping on Low Flow.Cause Not Stated.Vacuum Pump Replaced.Flow Trip Setpoint Not Adjusted.Design Change to Add Second Pump in Parallel Has Been Implemented ML19210D011
References
LER-78-037-03L, LER-78-37-3L, NUDOCS 7911200428
Download: ML19210D022 (1)

LER-1978-037, Vacuum Pump Kept Tripping on Low Flow.Cause Not Stated.Vacuum Pump Replaced.Flow Trip Setpoint Not Adjusted.Design Change to Add Second Pump in Parallel Has Been Implemented

Event date:
Report date:
3481978037R03 - NRC Website

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(>'t 6.8 LVLNIUAIL 74 7J 51[FOf tr DAIC b0 ON Ar:D PitODACLE CONSEOtJCf1LES h F VI:fJT [J iCitic T ITT37 l At 1150_the containment atmosphere particulate radioactivity monitoring system (R-ll) l

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FiiTril I flow. Tech. Spec. 3.4.6.1 requ!res R-ll and either R-12 or a containment air cooler l

gj l condensate level monitoring system to be operable. All Tech. Spec. requirements were [

jol7ll met.

R-ll and R-12 were returned to an operable status at 1540 6/13/78. Tlie healtly g and safety of the public were not affected.

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Flow rates were adiusted af ter initial tripping of the pump. !

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When the pump continued to trip on low flow it was replaced. The flow trip setpoint I

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