05000368/LER-1981-012-03, /03L-0:on 810303,loop Two Svc Water Header Engineered Safety Feature Isolation Valve 2CV-1406-2 Would Not Open from Control Room.Caused by Valve Operator Torquing Out Due to Valve Stem Binding

/03L-0:on 810303,loop Two Svc Water Header Engineered Safety Feature Isolation Valve 2CV-1406-2 Would Not Open from Control Room.Caused by Valve Operator Torquing Out Due to Valve Stem Binding

ML19350C219
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/26/1981
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19350C218	List: 05000368/LER-1981-012, Forwards LER 81-012/03L-0 05000368/LER-1981-012-03, /03L-0:on 810303,loop Two Svc Water Header Engineered Safety Feature Isolation Valve 2CV-1406-2 Would Not Open from Control Room.Caused by Valve Operator Torquing Out Due to Valve Stem Binding
References
LER-81-012-03L, LER-81-12-3L, NUDOCS 8103310597
Download: ML19350C219 (1)

LER-1981-012, /03L-0:on 810303,loop Two Svc Water Header Engineered Safety Feature Isolation Valve 2CV-1406-2 Would Not Open from Control Room.Caused by Valve Operator Torquing Out Due to Valve Stem Binding

Event date:
Report date:
3681981012R03 - NRC Website

text

-

O hRC FORM 364 U.S. NUCLE AR REGULATORY COMMisssON LICENSEE EVENT REPORT EXHIBIT A

.h CONTROL BLOCst: l l 1 l l 1 l

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATaoNi i

Q l AlR l Al N10 l 2 Igln0 l0 l - 10 l 0 l 0l 0} 0 l-l 0 l0 lg l1 l 1l1 l 1 [gl l lg S 9 46CIN188 coo (

84 i

L.C ENSE Nuutt.

26 26 tac tmA 35 g W g# cat Se CON'T

• l,v"l"c' $10 l 5 p l010 l316 18 l@l0131013 I 8l1 @l013121618 l1 l@

po i

4 to 61 pocatt voeg.

ed 43 EvtNTD.TE 34 ib ME,0.Y Dait a

EVENT OESCRIPTION ANO PRQS AS([ CONSEOVENCES EE) IDurino Mode 1 operation, while performino a Containment Cooler monthiv

.1 isurveillance test, the Loop Two Service Water Header ESF Isolation Valve, i m.,

o, i2CV-1406-2, would not open from the Control Room.

Tne valve was placed i

'in its ES position, returning the Loop Two Service Water Header to oper-i g

o,

iable status.

Loop One remained operable. There have been no similar i

o.

o > Ioccurrences.

Reportable oer T.S.6.9.1.9.b.

1 roTr1 I l

'ES"

'!cs sNcEs s'f7,.

J07:1.

u o~iurcout l WI Al@ [E_J@ [B_j@ IV I A ll IV 10 lP l@- [Aj@ [.Zj @

o,

@ ;,;,;... -$, ~, v[..

",i"A';'4[

"d'"

"';'s"

~

.,8 1 1 1 L-J l 01112 I l,d, 1 013 I L_LJ L,, 1 10_j 1

n n

a z.

n n

u

$Waird" a"v.'c.:Wir,2 "i0. 't"JiT

• "'.T!N,.

n'#O

'A"c M '

A'!M;,

LB_J@LZj@

LZ_J@

LZJO

! 01010 @!0 i L!JJ@

itLJO LA_J@ lRl1l0l2l@

ou.,

33 M

JS 36 31 ao en 4;

43 44 4,

CAUSE DESCRIPTION AND CORRECOVE ACTIONS 27 Naintenance investigation revealed that the valve stem was binding, causing

. o L.t.u } ithe valve operator to torque out.

The valve was lubricated and exercised i tand returned to service.

i

, s 1 i

i i

i.

o,-sa st.rus @ EsS370v' '

o.scove., cesea.,no @

' v'.'E' T,ows.

i LEJ@ Lol7161@l NA I - LB.J@l survet11ance Test 1

' 5 u

a a

as a

.!,,,,,, - car,,,,.

ov.,1o,.crmtv @ l toc.nou o, cu.u @

.euisio on.nu.se [2_j @ Q'*1 NA l

NA l

i 6

' ',,u.so.t n,o,,0.o mc...

a v.,

l0101 Ol@LZ.J@l NA l

i >

'., so ~d',.uu'.'.esone..,1,

~"

=

u.

10 l 010 l@l NA-l i.

- 'go, oa,f,.,c,i},.ciurv g 8 LJJ@l NA l

,l,a,I@d'7..,1,,@

• '""E Nac UsE ONLY v

i NA i iiiiiiiiiiiii

= o Chris N. Shively Nh%b3M o,,,,,,,,,

, goy,,

810.s'310 59 F