ML18024A496

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Forwards LER 78-017/03L-0
ML18024A496
Person / Time
Site: Browns Ferry Tennessee Valley Authority icon.png
Issue date: 10/25/1978
From: Fox H
TENNESSEE VALLEY AUTHORITY
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024A497 List:
References
NUDOCS 7810300168
Download: ML18024A496 (2)


Text

REGULATOR NFORMATXON DXSTRIBUTION STEM DOCKET NBR: 050-260 BROWNS 2 DOC DATE: 781025 RECXPIENT: O'REILLY, J.P. ACCESSXON NBR: 7810300168 ORIGINATOR: FOX, H.S. COPXES RECEIVED:

COMPANY NAME: TN VALLEY AUTH LTR 1 ENCL 1

SUBJECT:

SIZE: 1+2 LERI78-017/03L-0 on 781004: Drywell oxygen concentration was n'ot reduced to 4% w/in 24-hour period after placing reactor in run mode, due to personnel safety consid'erations during repair of inner drywell air lock repairs.

NOTARXZED DISTRIBUTION CODE! A002 DISTRIBUTIO< TITLE t INCIDENT REPORTS ENCL' FOR ACTION BR C~~ W/e ENCL ~ ORBI 3 BC W/ENCL NRC PDR W/ENCL

'I S E ".I/2 ENCL I NIPC W/3 ENCL I I 8 C SYSTE"S BR 0/FNCL I NOYAK/CHECK W/ENCL EEB W/ENCL AD FOR ENG W/ENCL

~ PLANT SYSTEMS BR W/l NCL

~ HANAUFR t4/ENCL AD FOR PLANT,SYSTEHS W/ENCL I AD FOR SYS R PROJ W/ENCL REACTnR SAFETY RR w/ENCL ENGINEERING BR W/FNCL KREGER/ J ~ COLLINS W/ENCL

~

POWER SYS BR W/ENCL K SEYFRIT/IE 'l4/ENCL

,LPDR

" w/ENCL

,. NSIC W/ENCL ACRS, W/i6 ENCL" TOTAL NUHRER QF. COPIES REOUIREnt LTR ENCL NOTES:

~ ~ ~

C I TENNESSEE VALLEY AUTHORITY CHATTANOOGA, TENNESSEE 87401 October 25, 1978 Mr. James P eilly, rector U.S. Nuc ar Reg lato Commission Offic of Inspect and Enforcement Reg n II 10 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANT UNIT 2 - DOCKET NO. 50-260 - FACILITY OPERATING LICENSE DPR-52 << REPORTABLE OCCURRENCE REPORT BFRO-50-260/7817 The enclosed report provides details concerning the drywell oxygen concentration which was not reduced to 4 percent within the 24-hour period subsequent to placing the reactor in the run mode. This report is submitted in accordance with Browns Ferry unit 2 Technical Specification 6.2.A.2.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. S. Fox Director of Power Production Enclosure (3) cc (Enclosure):

Director (3)

Office of Management Information a Program Control U.S. Nuclear Regulatory Commissio Washington, D.C. 20555 Director (40)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 An Equal Opportunity Employer 7g-(op< o (4E