ML19270F366

LER 79-007/03L-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

ML19270F366
Person / Time
Site:	North Anna
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: ML19270F357 ML19270F364 ML19270F366
References
LER-79-007-03L, LER-79-7-3L, NUDOCS 7902060313
Download: ML19270F366 (2)

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[} 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

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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 C9 n' egenA,_ p r Occurrg_ _

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

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'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 '

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• 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 e a-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.

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.Ac t i o.n T a.k e.n. t.o_ P.re e. _n_.-_curre.nce.

No further action required.