ML18024B349

RO 50-259/511:on 800201,w/Unit 1 in Cold Shutdown & Units 2 & 3 Operating Normally,Discovered Potential Loss of Secondary Containment If Primary Containment Purging Is Conducted During Hot Standby.Caused by Pressure Surge

ML18024B349
Person / Time
Site:	Browns Ferry
Issue date:	02/01/1980
From:	Abercrombie H TENNESSEE VALLEY AUTHORITY
To:
References
NUDOCS 8002210372
Download: ML18024B349 (3)

Text

HFGULATOR NFORMAT ION DISTRIBUTION l'EM (RIDS)

ACCT.SSION NBH: 8002210372 OOC ~ DA TK: 80/02/01 NOTAHIZED: NO -

DOCKET '0

-FACIL:50~259 Browns Ferry Nuclear Power Stationg Unit lr Tennessee

'i. 05000259 owns Fer r y, Nuc ear Power Stat i on~ Uni t Tennessee 05000260 UT 0

0 2~ AUTHOR AFF 1

ow'ns Ferry Nuclear Power Station< Unit 3i Tennessee ILIAT ION 05000296 A EHCROMIE>H ~ l'ennessee Valley Authori ty, HECIP ~ NAME RECIPIENT'FF ILIA T ION Hegion'i At lantana Of f ice of the Dir ecto>

SUBJECT:

RO 50 259/511:on 800201<w/Uni t 1 in cola shutaown 8 Units 2 3 operating nor mal I yidi scoverea potential loss o f secondary containment should primary containmerit purging be conducted during hot standby, Caused by pressure surge in sys DISTHIBUTION COOK: M007S COPIES RECEIVED+LTR Tl TLE: LER (Backf i t) g ENCI ~ SIZE: /

NOTES; RECIPIENT COPIES RECIPIENT COPIES ID C 0 ARE L T l'R ENCI. IO CODE/NAME LTTR KNCL INTERN L~: 0 HKG FILE 02 NRC PDH 0 AEOD MPA NSIC R IRELAND S HANAUER EXTERNAL.: 03 LPOR TOTAL NUMBER OF COPIES REQUIRED: LTTR 10 ENCL

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AtIteita, Georgia 30303 l!FZQ 50-Z5P/8XX Exported us Ter Kchnicak S~>Affixation S.7.2.A.P ge~ of Occvzrence: Febmem t,, 1980 'Khan o$ Occurrence:

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~erhnf.cai Speci%.ection XaoarX~. 3 7 C X Conditions Prior ta Occurrence gait L'a coM ebutdcwa for refueliag. Unit 2 4n nanna'peratiaa at K~C36 PNe Qnf.t 9 at 850 XEI'+ noxea1. aperaticm Edentification and Descry tCcm of Occurrence Analyses by aur &Vision af Engineering Design persanneX have inMcoked a p:>~nCVX Ioas of seoondnrv ~mecsitment shouEB prW~ry conteQneot porgy.ng.

be cooductecf during hot standby or power operations concurrent arith a Eoss crE caoinnt acct.4r.zt A trent Cnuse of Occurrence 8bnuEd purgtng bi conducteC as stated abave aa8 a lass o% cooEant eccideat occur, the pressure surge M Che ductmrR aeeacifetecf ~fth the purging ryrtem couM came Tailors am~ daeapers ar XaXtuxe of the dectvarR.

Other ReIeted Events Coxxective Actfon Taken oz %fanned 0d gg~~

UntiE this enaEyses can ba ~~ Xxaed and ita Wyatt asses

~ Cf55 purge operation

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~DR not be peaaitred ez.cent. r tm e coId ehutcfcma roadfrfon