ML19339A663

LER 80-021/03L-0:on 800924,ST Revealed That Indication for SV-2671A - G Control Switches Was Lost.Caused by Short in Coil of Dymo Type Solenoid Valve Which Blew Common Fuse in Control Circuit for All Seven Valves.Common Fuse Replaced

ML19339A663
Person / Time
Site:	Peach Bottom
Issue date:	10/24/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-80-021-03L-01, LER-80-21-3L-1, NUDOCS 8011040486
Download: ML19339A663 (1)

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1 Mr. Boyce rt. Grier, Director No. 2-80-21/3L 0 I Cffice of Inspection & Enforcement, Region i I U.S. Nuclear Regulatory Correnission j 631 Park Avenue King of Prussia, PA 19106 Cear Mr. Griers This LZR ccacens the loss of primary contai:: ment air cample flow due to a defective coil in S7-2671A. Govermfre Technical Specification is 3.6.c.2.

O.S. NUCLEAA REGULATo V CoMastSSION LICENSEE EVENT REPORT

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90 Gl QQcatT 44.t. Sam av ENt cascairtioN aNo Pace AstE Cons (QUENCEs h i: ;I I Vhile at full tower, ST revealed that indication for 57-26711 thm G  ;

!. 21 1 control switch was lost. Investigation revealed that all radioactive gas  ;

io .I t sampler inboard isolation valves (S7-2671A th m G) were closed. 37-26711 f I 4rI was electrically isolated and valved out of service. hinine 6 valves  ;

i: 5i 1 were opened zwstoring system to ser71ce within several hours. Continued  ;

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, ,: i ! Cause of railure was a short in the coil of the Dymo Type solenoid g Wl valve. S7-2671 A, which blev a eccinon fuse in the centrol circuit for y i ;i l all -even valves. The cenznon fhse was replaced before rot t mimr system  ;

6.i:il to service. S7-26711 was retumed to service after replacing defective t i.,,jl coil. 7nvestigation continues.

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