ML19329F970

RO-80-029/01T-0:on 800627,pressurizer Power Operated Relief Valve PCV-2456 Inadvertently Opened in Mode 3 Following Valve Maint Activities.Corrective Action Will Be Taken Pending Completion of Investigation

ML19329F970
Person / Time
Site:	North Anna
Issue date:	06/27/1980
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
References
NUDOCS 8007110420
Download: ML19329F970 (1)

Text

............,...........n.y........, ................ . .........

. .

...................f.........................

_ _ _

..

. .

)

- -

[ p)- -; 4

• ___

"-

'

.

_

~ *g  ;

~

. ---- -

.

T ~~

IN @. .(HT CQNTAINS-

-

-

USNRC REGION :*

PQQRfQlMIIIYIbN ATL ANTA. GE O.:".It.

.

s

' Virginia Electric and Power Company 80 JllN 27 P l ** (M '.I.,r

-North Anna'Pewer Station.' Unit %.12 ..

Docket No.~50-339 tNPF-7 ~'

. .. 2 24 Neur Repartable ~ Event >

.

~

'

-

-

~

Written Folloucup[ ~ -

{-

Event: Pressurf 2er power operated relief valve inadvertently opensd in Mcde 3 following valve maintenace activities.

LEll/R0 80-029/01T4 Unit. 2 pressurizer power:oparated relief valve designed FCV-2456 opente inadvertently shile being placed in sarvica follcuing corrective maintenance

,[ . Initial aparator action. closed tha. upstream motor operated isolation valve

.

.I.IOV-2535, thereby'tarninating: pressure relief.

.This avant is beinc~ repotted in accordance with NRC latter of Hay 7.

kS80, 'Section II :K.3.3.; position' (ah " Future failures of a relief valve to close should be reported promptly to the NRC."

.

1 At the timesof the.* Reportable Event, Unit I was in Mcde 1 and Unit 2

' was maintalaing. Hot Star.~dby.

~ '

corrective action to be taken is.pending completion of further investi-

'

gation.

3 .i 4 i

I

'

,

l' . . . -

x

/ '

i y .

~

Director I

- u, L

-

D*Puty Director

,;

. p . .< .~..: . ' Ass't to Director

- Admin. Otttoep

. .

~.

.; .7._. w , ;y ,

< .

_ h0NS Chier f Y. .t RCES Chief

'y.Y%. y'.

.

a- rd ', , ., . ~. ;'i . e .

c '

I. ,4 ..~ -

ppMS Chier

'~b .

' -

14 - - Sfgda Chier i

i

. . . ~ . . :ws r w ;n . % AOfftoer n

• '

u t@.ANA.  ?- ..aw.- En o itsa

,

4 ry w. 7; rg .f . y . .. . . ,.

. .

g<

. - ;. .-. :- . ,i.. . ep. ,

-

.n

,3, . :,.m

.f

<

. . .

.

. . : ,.g . .3

. , . . 3 .:- . . .. , e

. : J . .p_ .

<

. . . ,

.

.

ocQ, i

,

. n a x: .p p . p:e.. . ..:.m _ u ,r.

. z.. ,

wy:

3

. -:., x.. - g g n. ..

. . m.n . .

"

2 i

f . - . 6 .. .n. p:*r .. . ~ - ....

-

m: ., - - wam /O ..

l

, . , , . .. w:.n f l .

. ..>:-

.t. ,.

.

'

.w 9. x .~. .,:.e3..f. :. _,;y . ~; .a . y,.c.;:.. ..

..

' .. .

.

. , ~.~ . u: ;W yAraw- ;;.ty %.W .

'

.

.

{[~ W.

.

..

l

.

. . , .

.

'

i i

. -.. .. .

.

c 8]

..' .%m:e,. m . ... .W :.. W? 2:a ??: . . . ' .- -

V

'

n+. ..

3 _ .t .,.y . . s . g y ;n. y;, c , o ,

.

. . ~>u -

.g;i 3 ' '

. .

.

• .

• .

.

'

,

* ,r~ q. q .y -

- s n.q , ,-*

.- -- 8 0 0 7:1:10N .:Mw. ~ki{ . ,-g.: : . .~ - .- -= m  :.; .

( .n. w...- w . m p . 5 .I - . . , . .

e 4sw+

. , . . ..

• :.r.4 9; . ~.

.

. ; u?._.2

-

..

-

l

,

- . - . . - _ _ - _ ~__--.-__-__-