ML19209A296

LER 79-025/03L-0:on 790829,during Tests,Reactor Vessel Relay 2E-K18 Failed.Caused by Worn Contact on GE Hfa Relay.Logic Channel Placed in Tripped Conditon & Relay Will Be Replaced During Refueling & Maint Outage

ML19209A296
Person / Time
Site:	Peach Bottom
Issue date:	09/28/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-025-03L, LER-79-25-3L, NUDOCS 7910030486
Download: ML19209A296 (1)

Text

~.t i c..-(.ge u t.%- k . s .,., i .e t)1 5.i'.: 6 t r,, Durir.& a routine avrve!!!a nce testieg, a relev to the P lo-!

of A?S fr.itiation failed to close prcperly ne gm rnir.g Tecte .c 4 ;

Specifications are section 3.2.5 and tatle 3.2.5.

h UClodE C i VE F4 7 AL POr t gg m,.m e - t. _ _

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• f 2'9 7.9b , c'O 9 12 6 ' &

5g.t.,*-. *_[]while at power and dur_ing a surveillance test of peactor vessel leve _

r T.~.. . ins _t rwnent a. tion (1su.3_-2_-3 .72b) . r.elay ( 7E-K18 ) fail.ed t o make contact.- - - - --

u. .. . -. _

-- - - -- - . - -j; .This relay _provides Reactor vessel Los Level Trir (-133 in.) to AO5

{linitiation logic. Safety consequences were minimal since the redundant

, I*3I8 c *nm*1 G l,_, was operable. _

b! . _.. . . . _ _ -

.I h 1.-_. . _ _ .- . - _ _ _ . -

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1'h{c ;0 48 c 4-r N {.~**man i . .c :c a *5 :5 Q1 i The cause of this occurrence was a wr,rn contact on a CE HFA relay. The g j (, logic ,has been placed in the tripped condition and the relay will Le

_, pp replaced during the current refueltag and maintenance outape.

%] 1 E. liJ L._

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e., M./J. Cooney, , - .. . ., (215) 861-5020 nwt en e etenut o -

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