05000317/LER-1979-032-03, /03L-0:on 790806,12 Charging Pumps Placed Out of Svc Due to Low Suction Pressure.Caused by Faulty Pressure Indicating Switch 1-PC-224Y.Internal Parts of Switch Replaced & Pump Returned to Svc

/03L-0:on 790806,12 Charging Pumps Placed Out of Svc Due to Low Suction Pressure.Caused by Faulty Pressure Indicating Switch 1-PC-224Y.Internal Parts of Switch Replaced & Pump Returned to Svc

ML19253B063
Person / Time
Site:	Calvert Cliffs
Issue date:	08/31/1979
From:	Heibel R, Rizzo P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19253B062	List: 05000317/LER-1979-032, Forwards LER 79-032/03L-0 05000317/LER-1979-032-03, /03L-0:on 790806,12 Charging Pumps Placed Out of Svc Due to Low Suction Pressure.Caused by Faulty Pressure Indicating Switch 1-PC-224Y.Internal Parts of Switch Replaced & Pump Returned to Svc
References
LER-79-032-03L, LER-79-32-3L, NUDOCS 7909140444
Download: ML19253B063 (1)

LER-1979-032, /03L-0:on 790806,12 Charging Pumps Placed Out of Svc Due to Low Suction Pressure.Caused by Faulty Pressure Indicating Switch 1-PC-224Y.Internal Parts of Switch Replaced & Pump Returned to Svc

Event date:
Report date:
3171979032R03 - NRC Website

text

NRC F ORM 366 U. b. NUL.L t AH h WULA10H Y COMMintuN (7 ??)

LICENSEE EVENT REPORT CONTROL BLOCK: l l

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8 60 61 DOCKET NUMBER tid 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h o

2 l At 0945.12 charoinn nirn was niaced nur nf service because.of nump trios due to l

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I low suction pressure and unsuccessful attempts to restart the puros and maintain l

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I it in operation.

Placina this oumo out of service reduced the number of ooerable 1

I chargino cumps to one (as number 11 charoino cumo was isolated because of a packing i

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Ileak). #11 charcina pumo was reoaired and olaced back into service at 1530 on 8/6/79,1 o

s l briGCin0 the number of ODerable Dumos to two as reOuired bV I.S.3.1.2.4.

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l charging pumo remained operable durino event. This is not a recetitive occurrence.

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in'dicatino switch: 1-PC-224Y. This Ashcroft nodel 1379 TAXEF was recaired by I

i replacement of gauge internals which were worn. This is being considered as an

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l isolated failure and no further corrective action is to be taken.

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