ML18024B229

RO 50-296/79-21:on 791208,w/load Approx 200 Mwe Following Return to Svc After Fuel Outage,Difficulty Occurred in Maintaining drywell-to-torus Pressure Differential.Caused by Leak Around Equipment Hatch Seal.Fasteners Retightened

ML18024B229
Person / Time
Site:	Browns Ferry
Issue date:	12/11/1979
From:	Abercrombie H TENNESSEE VALLEY AUTHORITY
To:
References
NUDOCS 8001140293
Download: ML18024B229 (4)

Text

REGULATORY ORMATION Ol'STRISUTION SYSl (RODS)

ACCESSION NBR:80011r10293 DOC ~ DATE: 79/12/11 NOTARIZED'O DOCKET PACiL:50 296 Browns Perry Nuclear Power Stat>onr Onlt 3i Tennessee 05000296 AOTH ~ NAME AUTHOR AFFILIATION ASPACROMBIEiH ~ L Tennessee Val ey Author f ty1 ABC lP ~ NAME'ECIPIEblT'FFILIATION

SUBJECT:

RO 50 296 /7921:on 791208rw/load approx 200 MNe following retur n to svc after fuel outageidifficulty occurred in ma i nta i ni ng drywell to.-torus pressure differential, Caused by leak a round equipment hatch seal,F'asteners ret19Rteneds DISTRIBUTION CODE: M007S COPIES RECEIVED;L'TR g ENCL + SIZE: L TifLEe LEA (Backfit)

NOTES:

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~ X gpss TOTAL NUMBER OF COPIES REQUIRED; LTTR 9 ENCL 0

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g, T, SUTHERLAND gs EFR9 58-296/792>.

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Reports aa8er Technics Spec~gcaaf g 7 2. < 3.

XCma ae accorxence-Technical ByeciHcatiaa. hxvaiva8: 4 7 4,,2.g Candicions Pfior ca Occurrence I

Unit f. ac 970 Kfe, end-of-core eoastcbwn ,Unit 2 st S39 NMe, Hmitd bF 2'eactor feed pump maintenance. Uakt 3 ibad at zpproxhuateiy 260 st HWe foilevJng return ter service af the unit- fracn re&xeHng, cmtage 163.5, k2/S/79 MC ia eeet p~reai I

Identifkaation and Descry tiom ef Qccnmence DHHmBy in maintaining de'yeeXX & Axus pxessuxe cKHerenchQ&mt. ~~catect problems*with dryva21 leakage . Farther invastigatfma. reveals exceask~e d~kX bc'ment par Yaebnicaf Speciff.cation 4 2 4 2 h(2)>

Leakage,existed Leak psch. %8eatiHed cu4 repaired ae 0839>> XZ(9t79>

within 45 C.

~et Cause of Occurrence I

I XeA am& southeast equipaumt hatch esaX due tc heaenad fsscenees.

Retaught'en%us of faateaers fmmeNeceXy texmfaated %esker.

other Rebated Events ', -',- ,

None I Corrective Act$.on Takeo, or Pkannnk '

Retightening cf fasteners corrected Xaahage ocher. corrective sctien is be%.ag eaKLskderod.

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