ML19259C012

LER 79-019/03L-0 on 790501:during Surveillance Testing of Normally Open Primary Containment Isolation Valves,Four Oxygen Analyzer Sys Isolation Valves Failed to Close.Caused by Binding of Pistons in Valve Bodies.Valve Parts Rebuilt

ML19259C012
Person / Time
Site:	Peach Bottom
Issue date:	05/30/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-019-03L, LER-79-19-3L, NUDOCS 7906070252
Download: ML19259C012 (1)

Text

I -

~

Mr. a oyce H. Or ter, Direc ter Off6cc of Inspection (, En f orc eae.i t , Region I

.No.  :-79-19/3L QQl U.S. M iese legulatory Coreni ssion g 0 63, para avenue Kirg of Prussia, PA IN6 O Cs '

Ce ar Mr . Ge f er :

F1' $ ' l t3 g This L.E.R refers to the failure of four primary containment oxygen

1. ~

sample system isolation valves. The applicable Technical Specification is section 3.7.D.1.

i u s muctran ascutaroav cc .i.uss.o.. .

LICENSEE EVENT REPOAT cr.r'iut ncc. i. tease mur on ryn att agownso ,%.oncar.ov f ! ! ! I IQ gj [p, l e. I s 19 15 1 2 l 10 I 'h I? IO ., .

, . . . . . . . . . -, ..@h IO I In IO_.l .)

., m. m. . I@l I ! m! .s' .I.i .l ?. (* - - -I l) r.o., ,

Fl ""' lL@l0 s.14 f3.m . o 13 12 17 17 (JiO15'O 'l I 7 19 .C l 015n !)~r.,e 10 7 '9 I/]

l.

r s.... . a ,. ....,s

(.as r :ssematem aso paosasta ecNst%ssets @

,.i i During surveillance testing of normally open primary containment isola-t i

. , . , Qion velves, four oxygen analyser system isolation valves SV2671 A,5,3

• m r_and.2978C failed to close. The manual _ isolation valves were_i_mmediately __

j [ y g elosed until repairs were completed in accordance with Tech. Spec. 3.7D.2. J l QT, ) L Safety st_gnificance is minimal since the redundant _ isolation valves were '

i l DE L operable and the size of the valves are smati (%"). Previous occurrence r: m .t-- I.ZR 2-78-45/3L.O.

?? cui,' ,.W%  :. ....,,,.  :::a og

{] lStDl@ W @ @ l V I A l L I V I E l X l'h lJ Q' L3Jf;-

,. n . . .. .-,s....<

.r w

.g,,

LI7I9l

(--J l01139!

y iO f J { 1 1 1 b 1 f

. . n. , .~..a.~.,

.. -,v. c. ;

, o. , .~ _... ... . .

v. .+ . , .

l Aj[ [1]@ W@ [.,L!@ [0 l 01.0 U0 I

L.1,J @ [,I,,,j @ W@ lA I$ l 3i5 s .

u.e..: a e.n : :anvenvg a;ricss @

]71 Four "_ Atkomstic Valve Co. "Dvmo" Tvoe solenoid valves failgd to close l g ,_ due to binding of the pistons in the valve modies. Valve internals L.m g _ including saat disk, piston ring, and piston rod link were rebuilt. The E1 L_ valves were checked for proper operation and placed in service.

O-] L -

l ,

.:n ,-w.

.. v.s,.,, sa.. -

, c . n .. . r r , e;j)  ;

} R [g,J TJ l 019 I 5 lh N/A '

I [],,,Jh Surveillance Test *

. , s,..

. . .. .c. c

....w. r o. .c r.v. . h

l r

.< e 4.c d

[E LJ@ L,t_J@l N/A l N/A I

4. 8%

c,~... ~~ ~/P iT diqjd di N/A i

s. ..

. s.o

LO1_0_i,0j@l N/A I 9

gl y/4 i c

I I \

g- 1 N/A uTM/ CF  ! ' ' '

l M. J. Coon M 020 15)' 8'4 i _

. ip /

i 7906070A OR