05000338/LER-1979-007-03, /03L-0 on 781116:during Normal Operation,Fire Door S54-5 Between Unit 1 Emergency Switchgear Room & Cable Vault Was Sprung & Would Not Make a Tight Seal,Evidently Due to Attempt to Free It While Stuck

From kanterella
(Redirected from ML19270F366)
Jump to navigation Jump to search
/03L-0 on 781116:during Normal Operation,Fire Door S54-5 Between Unit 1 Emergency Switchgear Room & Cable Vault Was Sprung & Would Not Make a Tight Seal,Evidently Due to Attempt to Free It While Stuck
ML19270F366
Person / Time
Site: North Anna Dominion icon.png
Issue date: 02/01/1979
From: Cartwright W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19270F358 List:
References
LER-79-007-03L, LER-79-7-3L, NUDOCS 7902060313
Download: ML19270F366 (2)
v • d • e


LER-1979-007, /03L-0 on 781116:during Normal Operation,Fire Door S54-5 Between Unit 1 Emergency Switchgear Room & Cable Vault Was Sprung & Would Not Make a Tight Seal,Evidently Due to Attempt to Free It While Stuck
Event date:
Report date:
3381979007R03 - NRC Website
v • d • e

text

.um uc -iw FVEf:T imPO.n

..; ( 1l {')

[( ]. l l

.l-oiv-rm ;r on im i t U c u: : n r "

'ui>.,

.nm et:

["9 { o q,

,. l ',i

!^[Ml['lh.I).lO'A0}Ul-,0 lU I" I.0 l u l-I0d!i IryI Il- !l Il l 1.,K U,. I l b-

'Y 1

s 1

m, m

m t t IN ' }

7 l,.l ] [)l0 }.5 J O l 0 [9 } 3 l ' p y 0 J J l1 l (, 17 lH j{)l ol 4 of d j' n l n.a:

n i-

.o s

u (F.)

tutuii mm,,

ir.

o [g fj l Duing non al oim a tion, f i c.

d r %'

S.

b o i '. ' n !!a i l.1 1:-

mc.: m:y wi t chm o rv _

J g, j j and cable vaul t v i', d i ( c o'.+ n. ' n o t iunctional_ in that i t v: q s p re;.ri, no t ta l;

>ng j

p p j [ t h r.- la tch to i;ie up with th.3 ". ! r i f tijlate t7 ciurw a tjH:t sotil. J his rowlt ! in

.J g g ;de:'rar!ation of the con t rol rco, fi re br o.f ary av! pr{li ' i s o pn; m s m,'/e l o; > >

h fire j

[ g ; j j u : Lc h ',y c. ta t i o:. d.

Thi, evm.' did nol,icopardi/r-th: h; :d t h and safa t ' 0F th" l

p - l g [p r ::ral publ ic.

P,

- table pursuant 1. T.S. 6.0 9.h j

l'.

s c

( ;

Ct f-(, a

( (

r

.' I i t

i i

I t i1 1-I:

1-1 F.:

is

.t;

('

r i

.[I 6.i' i

t1' Iit i f

a *

!,f f

f1]

__ j 7 l [d]

[ 0_ l 3 l I! l l. l [Oj al i

(.

/ g ].'

.l

64' F-r

['T ie

,T i

ii;r

. F.1 1

(.)

!1 Il t f_,

t.

I; ' ' 61.

i/

(P l n..b H-c H__)

[ Z jp.)

[ ZJO l 0 J. 0 l. O ! U !

[ )'.j 6')

[ U ip)

[ L lf')

[ ). l.9 l 9 j 0 l(. ')

\\

/

\\

l D ',

iI.

iti; t'1i\\r f3.]l I'jl l ;

i 6 i 6

0 3 r 2* li! > 3 r f 21', '.l y l)D C i!:1..' S LUr'b anrl (lijr ;;

... ;t t, [. p[ t.o f,

t.,

! !) 7 )

li. ' f l'i! li. )ll.Il II b e, L i

[} pi ) [ den it ua', sprung.

The door un, rmovc d ami ten orarily reinforced e:ith an:;1" imn; j j j,q jalso, a sheof of repaseal v:as installed in l b door b W acn th7 insulation.

T!", dnnr j 97.] lv: s reinstalled, seal replaced and adjust M for prcper closing.

l [F)

/

I' l*lr>'(V f'

{,. _ )

f ;.1: It, il -

,is

't:

(s t e

't 51/ I t s/

ra /fe e-'Y f

. >.' l ; 6 s [.l Pli;

.A L...

/

a l'+

1~/

1i f. 3 0

[;

' ll. fir t 0 ' 'i T !. i 1'1[/

(

le t [

N. ',' J.'. ; t, -

I t

1 11 44 4'

t

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

/

b

's 11 1^/

1.1 FO

.t IN
i; lip' n umn: w m
- o b.

lk_lS.b.9.b!___

_... __. _ _)

/

0 D lb 1/

E- )

D.

I : i f'/ C i t i f Y L

'1 i

[iTTl ['Z lR{

NA j

1; o - ' i e

Iz'_ b.. _ ! ! !'M'J ~ ~. O,

790206 03(3 l ) l _l _LI I I l.l I.L]:

r.

k.d.

U"

]

cs..,

r, a i

r u.

W. R. Cart.cright-

_70_ _3 4_94 M 61 _. - _.. __ S ru er o. rm rean n.

runs

Virginia Electric and Po 2r Co:,,m y Port h Anna Pot >r S tclion, Un i t i;o. 1 At t ach. 'o t:

Pac ' 1 o f 1 Dack"'- I:n. 50-x, INport l'a. 79-007/0 1 -0 D e s c.r_i o t.i o n of ixent.

~

Do 1-lfr79 duris.arol op era: i', fire door SS/rb us discor an d not functional in accord ace with loch. <,

3.7.7.1 and 3.7.15.

TE m >ar ua s functional in tha t it was able to close thu opening; hr, m e, the or i a s p n n";

and would not p.fr.!L the latch to i2Ee up uite the stiih platt e:, Leblishing a tight seal, further inve,tigation revea h d the door hed appar a th h:co;c stu k and in an alie:..pt to fr ec the door it was sprung.

Prohahle C n' egenA,_ p r Occurrg_ _

9 The CoC ol Roaa habi tability sys tm, required by T.S. 3.7.7.1 c.d the pen'tra tion f ire barriers required by T.S. 3.7.15 are provided to m >;re cco-tinuous occupancy of the area dur;.y and a f t r na t<:rcl phenc ana, fi r; and

! !i ' ', i l e s it '

'll a5 for all postula te ' decidDuls UhiCh IRy or I;iy not relel%J radioac tivity to th; environs in this cane, door SL4-5 is u:ed b Ch as a pre wure envelopo houndary and a penetration fire h wrier to assucc co inuous ocCujianCy of the control roon Drea during aii.ident COniliibiid Uith t h'

  • naling cap :bility of l' e doa) reduced, its chiliLy to serve as a f ire and pressure larrier uo s do? < t'"J.

A fire Uotth en st i n d s per T.S. 3.7.15 and the 1/"" steel sliding door as placed across in c:netration.

A tr icpm ~y seal was installed around the sliding doer thus restc i; 9 the Control 100:1 pressure envelope and penetration fire barrier lhe health and sd ie[y of op0ral.Ing person::al dnd the general publiC udre ni,t elid':n" ;D 'd.

Ca H.S e During norc;al use, the door apparently becam stuck and during cn a ttemt to f ree the door, it was sprung.

Im diato Cm rective Action:

A fire watch Uis cla tioncJ uithin one hour as required by T.S. 3.7.15.

The steel sliding dooc was placed act es the penetra tica and a t'sporar,, seal was installed around the slic'.ng door.

ine fire watch was discontinued afLer the twpotary seal

's installed.

Door S54-5 was re.:

ed and Lahen to the weldinj shop for repairs.

The outer shin was removed from the door and t he door was reinforced with 1 1/2" x 1/C" angle iron.

The insula tion was rm. aved and a sheet of rer.eal was placed in the door i etweea the layers of insulation.

The door uns rensembled ar.d reinstalled.

Th. door scal was replaced e 4 adjusted, th du c -W u - > ' fm

,r, s

ea-Scheduled CotrecLive AcIion:

A new door is on order frcm Keyhoe Construction Company and the curiont door, S54-5, will be replaced upon its receipt.

.Ac t i o.n T a.k e.n. t.o_ P.re e. _n_ f Re

.-_curre.nce.

No further action required.

Retrieved from "https://kanterella.com/w/index.php?title=05000338/LER-1979-007-03,_/03L-0_on_781116:during_Normal_Operation,Fire_Door_S54-5_Between_Unit_1_Emergency_Switchgear_Room_%26_Cable_Vault_Was_Sprung_%26_Would_Not_Make_a_Tight_Seal,Evidently_Due_to_Attempt_to_Free_It_While_Stuck&oldid=4850951"