ML19261B204

LER 79-007/03L-0 on 790109:during Sys Component Test, Residual Heat Removal Pump D Would Not Start.Caused by Motor Switch Being in Off Position

ML19261B204
Person / Time
Site:	Brunswick
Issue date:	02/07/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19261B202	List: ML19261B201 ML19261B204
References
LER-79-007-03L, LER-79-7-3L, NUDOCS 7902140165
Download: ML19261B204 (2)

Text

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? 60 NUMBER EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h o 7 l RHR pump "D" would not start during the LPCI/RHR System Component Test (P.T. 8.1.3).

o 3  ; The Motor Control Center (MCC) circuit breaker was found in the open circuit positionI o 4 I without the charging spring compressed. This would not allow the breaker to close 1 o s ; and the motor to start. (Technical Specification 3.5.3.2) l o e l l o 7 I l o e I 80 7 6 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE o 9 lC Fj @ lX l @ lZ l@ l C l Kl T l B l R l K l@ y@ Zl@

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o l A switch controlling the small electric motor which is used to compress the breake*

l i 13 ) ; charging spring was found in the off position. The charcine sprine is used m nukk1vi

, 7 l close the breaker contacts, therefore providing power to the circuit. The charcine I i 3 l motor switch was turned on, and the Periodic Test completed sar*j actorils. Fire I i 4 l protection modifications are being installed in the MCC breaker area by (Cont'd.) l 7 8 9 80 STA S  % POWER OTHE R ST ATUS otSCO RY DISCOVERY DESCRIPTION i 5 lE l@ 0l9l6l@l NA l lBl@l Periodic Test i ACTIVITY CO TENT RELE ASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION oF RELEASE 7

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LER CONTINUATION -- RO# 1-79-7 Facility: BSEP Unit #1 Event Date 1/9/79 construction personnel. It is believed the charging motor switch had inadvertently been turned off . Construction personnel have been asked to be extremely aware of their surroundings while working. This is considered an isolated event, and no further corrective action is required.