05000324/LER-1980-066-03, /03L-0:on 800905,during Normal Operation Low Suction Pressure for RHR SW a Loop Observed.Caused by Tripped Circuit Breaker to Motor Cooler Outlet Valves. Breaker Reset & Sys Returned to Svc

/03L-0:on 800905,during Normal Operation Low Suction Pressure for RHR SW a Loop Observed.Caused by Tripped Circuit Breaker to Motor Cooler Outlet Valves. Breaker Reset & Sys Returned to Svc

ML19351D527
Person / Time
Site:	Brunswick
Issue date:	10/03/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19351D526	List: 05000324/LER-1980-066, Forwards LER 80-066/03L-0 05000324/LER-1980-066-03, /03L-0:on 800905,during Normal Operation Low Suction Pressure for RHR SW a Loop Observed.Caused by Tripped Circuit Breaker to Motor Cooler Outlet Valves. Breaker Reset & Sys Returned to Svc
References
LER-80-066-03L-01, LER-80-66-3L-1, NUDOCS 8010100341
Download: ML19351D527 (1)

LER-1980-066, /03L-0:on 800905,during Normal Operation Low Suction Pressure for RHR SW a Loop Observed.Caused by Tripped Circuit Breaker to Motor Cooler Outlet Valves. Breaker Reset & Sys Returned to Svc

Event date:
Report date:
3241980066R03 - NRC Website

text

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l LICENSEE EVENT REPORT CONTROL BLOCK:

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l lh' (PLEASE PRINT 03 TYPE ALL REEUIRED INFCRMATIONI 6

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8 60 61 DOCKET NUM8E R 68 69 EVENT DATE 74 75 REPoRTDATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 7

lDuring normal operation, the low suction pressure annunciator for the "A" loop of RHR l o 2 o a 15W was received. While investigating this problem, it was determined that the RHR l

l Service Water Pump 2A and 2C could not be started due to low suction pressure, thus l

o 4 gmaking "A" loop of RHR service water inoperable. This event did not affect the health l o 3 f g a go i gor safety of the public.

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l Technical Specifications 3.J.1.1, 6.9.1.9b l

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CODE TYPE No.

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f, i o lThe low suction-pressure was caused by a tripped circuit breaker to the motors' cooler i i i toutlet valves, which failed open and created a low suction pressure at the sensing I

, 7 l point. The breaker was r$ set. closed and the system returned to normal. This is the i

, 3 lfirst time this breaker has tripped; however. the circuit will be thoroughly checked l

y land a supplement issued if any problem is found.

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8 9 80 STA

% PowE R oTHER STATUS 015 ) RY OlSCOVERY D'ESCRIPTION W@ l 0l 0l 3l@l NA l

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i PERSONNEL EXPOSURES NUM8ER TYPE

DESCRIPTION

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NuMBE R 1010l0l@l NA l

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8 9 11 12 80 Loss OF OR DAMAGE To FAC1LlTY.

TYPE

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DESCRIPTION

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919-457-9521 0

PREPARER PHONE:

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