05000289/LER-1978-019-03, /03L-0:on 780605,while Performing Procedure Sp 1303-5,control Fuse Opened & Valve RB-V-7 Did Not Operate.Caused by Failure of Voltage Spike Suppressor Across Coil of Auxiliary Relay,Causing Short Circuit

/03L-0:on 780605,while Performing Procedure Sp 1303-5,control Fuse Opened & Valve RB-V-7 Did Not Operate.Caused by Failure of Voltage Spike Suppressor Across Coil of Auxiliary Relay,Causing Short Circuit

ML19261F189
Person / Time
Site:	Crane
Issue date:	06/22/1978
From:	METROPOLITAN EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19261F187	List: 05000289/LER-1978-019, Forwards LER 78-019/03L-0 05000289/LER-1978-019-03, /03L-0:on 780605,while Performing Procedure Sp 1303-5,control Fuse Opened & Valve RB-V-7 Did Not Operate.Caused by Failure of Voltage Spike Suppressor Across Coil of Auxiliary Relay,Causing Short Circuit
References
LER-78-019-03L, LER-78-19-3L, NUDOCS 7910250609
Download: ML19261F189 (1)

LER-1978-019, /03L-0:on 780605,while Performing Procedure Sp 1303-5,control Fuse Opened & Valve RB-V-7 Did Not Operate.Caused by Failure of Voltage Spike Suppressor Across Coil of Auxiliary Relay,Causing Short Circuit

Event date:
Report date:
2891978019R03 - NRC Website

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60 61 OCCKET NUVBER 68 69 EV ENT D ATE 74 75 REPCRT CATE 80 EVENT DESCRIPTION A NO PRCB ABLE CONSECUENCES h D lWhile performing S? 1303-3.1 "Eeactor Building Coolan', and Isolaticn System Icgic j

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g l Channel & Cc=penent Test", the control fuse opened and F3-V-7 did not operate.

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g l threat to the health and safety of the puolic existed for the short period of time

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s] l the valve was out of service.

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g l represents a degraded mode under T.S. 3.6.6. LER 77-14 reported a similar event.

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I B 13e valve was retun.ed to full crerability within 2h heu s.

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