05000269/LER-1978-008-03, /03L-0:on 780315,valve 1FDW-108 Failed to Close. Failure Has Occurred Previously.Caused by Apparent Inability to Withstand Environ.Valves FDW-106 & 108 Will Be Replaced W/Valves of Appropriate Design

/03L-0:on 780315,valve 1FDW-108 Failed to Close. Failure Has Occurred Previously.Caused by Apparent Inability to Withstand Environ.Valves FDW-106 & 108 Will Be Replaced W/Valves of Appropriate Design

ML19316A384
Person / Time
Site:	Oconee
Issue date:	04/11/1978
From:	Ken Wilson DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19316A379	List: 05000269/LER-1978-008-03, /03L-0:on 780315,valve 1FDW-108 Failed to Close. Failure Has Occurred Previously.Caused by Apparent Inability to Withstand Environ.Valves FDW-106 & 108 Will Be Replaced W/Valves of Appropriate Design ML19316A378 ML19316A381
References
LER-78-008-03L, LER-78-8-3L, NUDOCS 7912110645
Download: ML19316A384 (1)

LER-1978-008, /03L-0:on 780315,valve 1FDW-108 Failed to Close. Failure Has Occurred Previously.Caused by Apparent Inability to Withstand Environ.Valves FDW-106 & 108 Will Be Replaced W/Valves of Appropriate Design

Event date:
Report date:
2691978008R03 - NRC Website

text

. - ____.

O

.gr==ses u.s.uuctemecutarna co.uission LICENSEE EVENT REPORT EXHIBIT A cournot stoex: l l

l l

l l

l@

teteAss ramr on tves ALL r.souinto iNFCRMAnoN) i Io I i I l S P l N f lE l 1 l@15010 l-l 0 l 0l0 l010 l -l0 l 0 l@ 4l1 l1 l ll 1l@

l lg 7

8 9 WCEN144 CC04 le wCIN54 NyM.6A a$

3 WC&M&4 ry,g A

$7 CA r b, cowr [y'*$ lL l@l 0 l 5 l 0l 0l0 l 2 l 61 9@l 013 11 l 5 l 718 @l 0 l 4 l1 11 l 7 l8 l@

ao

.i coc=aruuu.an

=

=

aviar omre a

a aercaroara so Eveur cascairnon Ano racenste ccNssouescas @ from th Io t 2I l At 0830, after a sample was taken e 1B OTSG, 1FDW-108 failed to i

{

ITTT1I close. The redundant isolation valve 1FDW-107 operated properly main-i 1

g[ taining containment integrity.

Since containment integrity was not i

io t si l jeopardized, the health and safety of the public were not endangered.

' o is l l [o lil l g

10idj l l

.o

'ce'u" Ts!

MM.

c l H l J l @ {@ l B l @ lV ( A l L l V l E l X lg lf;l,g,=",g c=

co.,a==o.

su, "

ja}9l I

8 9

to ii 12 13 18 19

Q 6

IV emf TEAR A

Ar NQ.

Oct ry e,a'84f40 1718 I l-l 1010181 1-l 10 l 3 l lL l g

l(il y=

q u

u u

u a

u

n a

u u

u E=N "*Sc"E cEIt E "E

'E!O'r"rE' po'l".SO..

"d" se g is g'?7isL9,TY3

=

ouas L e e Li i e Lz i s s e

,i, oi oi o i

.,e i

cAuss esseniencN ANo cOaRECOVE AcDON3 @

li to 1 l The initial corrective action was lubrication and cycling of valve.

g; Failure of this type has occurred on several occasions, evidently gl indicating that this valve simply cannot withstand the necessary Ii,3i [

environment. Therefore, the valves (FDW-106 and -108) uill be replaced i i i.1 I in the future with valves of anorooriate design.

e s 480*EM QT1*tM sTATV3 as my i

• i s 1 [E_J@ l ll 0l 0 l@l 033COV E3CMirTI NA l

l B gl Observation cuEng roue"uwsampling, 8.jny,r, co'j r.,r

's is 4

• e

=

ou,o,.criviry @ l aitaAss II Is I W @o en astiass(,_Z,J@l Nn,r,,,,,,,,,,,,g 9c NA l

l

' nasc=='e*t n,esO s so essen me= @

wwween rm R l 0101 Ol@l Zl@l NA l

n ase== e't'iaudlu encaime @

no

.u...

li_LaJ l oI of oI@l NA 7

8 9 ii 2

l

'/d's *

• I'i I il 1 @ I,*'c".',**o',,'" " @

l NA

~.u '*r.

g enemme= @

.uuro sac use ent.v 12 t al L!U61 NA i

i iriiri,ii,ir a s o

1

)

nauscammeranen K. R. Wilson (704)373-8197 twene:

7912110 [ff