ML19338F840

LER 80-025/03L-0:on 800917,indication for SV-3978A - G Control Switches Was Lost.Caused by Short in Coil of Dymo Type Solenoid Valve Which Blew Common Fuse in Control Circuit for All Sevel Valves.Fuse Replaced

ML19338F840
Person / Time
Site:	Peach Bottom
Issue date:	10/17/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-80-025-03L, LER-80-25-3L, NUDOCS 8010270375
Download: ML19338F840 (1)

Text

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N,. j 2f/3L-o Mr. Jup.e 11. Ge ier , u ireuve Office of Inspection & Enforcement, Regicn i U.S. Nuc lear R egulatory Comissicn 631 Park Avenue King of Prussia, PA 1 %o6 Dear Mr. Griar  ;

6 This LER concerns the loss of pri=ary centairment air sample flow due to a defective coil in s7-397 0. Governing Technical Specification is 3 6.C.2.

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we VJ twe4T DAf t 16 RtPQH f g A T E EVENT oESCRiPTioN ANo PRosAsLE CONSEQUENCES @

la32!f While at full ocwer, operater found that indication for 57-3978A thru G  !

control switch was lost. Investigation revealed that all radioactive gas

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yl sampler outboard isolation valves (57-3978A thru G) were closed.s7-397 D  !

g3, was olectrically isolated and valved out of service. Remaining 6 valves  !

A1 were opened restoring system to service within several hours. Continued loi,!I operation permitted by Tech Spec 3 0.C.2. Centaira nt mcp pump 3 were f r

,a.4 i f operable and outputs were nor=al. Similar occurrence:LER 2-80-19/3L.

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f ' '-' O) iiial l Cause of f111ure wai a short in the coil of the Dymo *vre solenoid  !

lM ii.il l valve. 57-3978'). which blew a coz:x:2cn fuse in the centrol circuit fer  !

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Q r.d t.i il all sevel valves. The cet=: son fase was replaced before returnir# system  ! j

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_ i, ;ial to service. 57-3978D was returned to service after replacir4 defective  !

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