ML19324B421

Followup Ro:On 890422,limiting Condition for Operation Initiated Re Two Inoperable Fire Barrier Seals in Common Augmented Offgas Bldg.Caused by Corrosion in Base Metal Hatch.Replacement Parts Obtained to re-establish Operation

ML19324B421
Person / Time
Site:	Brunswick
Issue date:	10/25/1989
From:	Harness J CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BSEP-89-0971, NUDOCS 8911060274
Download: ML19324B421 (2)

Text

7 fW

, is

.t ;

. CaroHna Power & Light Comparv .

trunFwick Nuclear Project

~

P. O. Box 10429 .

Southport, NC 28461-0429 October 25, 1989 -

. FILE: B09-135100 SERIAL:- BSEP/E9-0971 .

U.S. Nuclear Regulatory Commission a

' A'ITN: Document Control Desk

. Washington, DC' 20555 4

eA

,... BRUNSWICK STEAM ELECTRIC PLANT UNITS 1 AND 2 T;CKET NOS. 50-325 AND 50-324 LICENSE NOS. DPR-71 AND DPR 62 FOLLOW-UP'TO SPECIAL REPORT PER TECilNICAL SPFCIFICATION 3.7.8 AND PURSUANT TO TECllNICAL SPECIFICATION 6.9.2 (2-SR-89-001)

Gentlemen:-

'During' power operacion of Units 1 and 2 at or near 100 percent, a Limiting Condition for Operation (LCO) *.,as initiated, at 0420 hours0.00486 days <br />0.117 hours <br />6.944444e-4 weeks <br />1.5981e-4 months <br /> on April 22, 1989, for two inoperable fire barrier penetration seals in the units' common ,

Augmented Off-Gas (A0G) Buildinb. The subject penetration seals, A0-3-024 and A0-3-023, are located at the east and west equipment hatches, respectively, on ,

the . building 40-foot elevation, and provide access between the nitrogen storage tank room for the Containmant Atmosphere Dilutiot, System shared ty botn units, and the mechanical equipment room on the building 37-foot elevation. The seals were inoperable due to corrosion and rust-through of the

' base metal of each hatch. Prior to this discovery, operability of the seals had been functionally verified, on Augtrst 12, 1988, in accordance with Fire Barrier. Penetration Seals Augmented Off-Gas Bu.ilding Periodic Test (PT)-35.16.13. Subsequently, on November 9, 19i,3, a Work Request /.Tob Order was initiated following a routine housekeeping tour that identified surface rust and corrosion of thc hatches, but which did not affect operability of the subject seals.

On April 29, 1989, time specified seven-day time frame of the involved LCO was exceeded.g 0911060274 891025  ?

PDR ADOCK 05000324 5

-S PNV ;

9

ih.)Mf5:

y

.1 , ,

Y 3 ,

- u

$h. ;.h.g. Ok.. ., , ;a. l s @ ' '* .

.e m;u a

.n ).i gJ f.- -ec e, ,

, .f' f3 yt- . .,

.c m, ,

s

^

e

'v' 4

~

1 l

p', , .U. SE Nuclear Regulatory Ccomission' -

2- ,

i gt s , .o *

.c .  ;

.g 2 a"p?i (, , , -

, ,r

• pf<4. s , :Necessary', replacement parts have'been obtained.in order to reestablish. opera- .,

WV4 obility of;the hatches.-:The expected date for' completion of these repairs is on- t 6:, , or. beforr, March 22, 1990. - Until,the hatches are; repaired,' appropriately. l 6.' station 6d fire watchestwill remain in effect.

' ~ '

si s. .v. .m l s 1.-

I d

c. < 'j

, r /l -J ~ . Very truly yours, -

g. .. ,. ,

T y , ' yy. s rA

y, L , J.. L. Harness,' General. Manager '

yNF ,

brunswick Nuc1 car Project-'

?-

MJP/mcg- .

i s ' Enclosure >

+ ' ~

.cc Mr. : S L D. l Ebner.er

.g

.Hr.,E; G. Tourigny l P , 1 BSED: NRC' Resident Office I h 4 ks ( ,s.

}'t'i g e .", '

• i:

,n'9,. .'-

J 1 ,

[;

3 i

• , t 4 ,

. !. b;, L

?

[. .

i l

f/ k

+

,f . 7 4 '

(. , ' < r!;

> 'e ,I s

' d ) '. f' 5 r

..).

n s

?

l y5 .

Ig.'V lg- t

}

u ,

5l, _ _

d 5 Ig ,

J ' .'9 ,, ""I, s.m );;.

U,' f t , ) 'i j' '.'. ( . ;

~ ) 4,) .I

• 1

' ?,Y' ' . , .

, , . . . , + + - , , . , . . . - .' '