05000260/LER-1978-017, Forwards LER 78-017/03L-0

Forwards LER 78-017/03L-0

ML18024A496
Person / Time
Site:	Browns Ferry
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: 05000260/LER-1978-017, Forwards LER 78-017/03L-0 05000260/LER-1978-017-03, /03L-0:on 781004,drywell Oxygen Concentration Was Not Reduced to 4% within 24 H Period After Placing Reactor in Run Mode.Caused by Personnel Safety Considerations During Repair of Inner Drywell Air Lock Repairs
References
NUDOCS 7810300168
Download: ML18024A496 (2)

LER-1978-017, Forwards LER 78-017/03L-0

Event date:
Report date:
2601978017R00 - NRC Website

text

REGULATOR NFORMATXON DXSTRIBUTION STEM DOCKET NBR: 050-260 BROWNS 2

RECXPIENT:

O'REILLY, J.P.

ORIGINATOR: FOX, H.S.

COMPANY NAME: TN VALLEY AUTH

SUBJECT:

LERI78-017/03L-0 on 781004:

Drywell DOC DATE:

781025 ACCESSXON NBR: 7810300168 COPXES RECEIVED:

LTR 1

ENCL 1

SIZE:

1+2 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.

DISTRIBUTION CODE!

A002 DISTRIBUTIO< TITLEt INCIDENT REPORTS NOTARXZED BR C~~

NRC PDR

'I S

E I NIPC I I 8

C SYSTE"S BR I NOYAK/CHECK EEB AD FOR ENG

~ PLANT SYSTEMS BR

~ HANAUFR

AD FOR PLANT,SYSTEHS I AD FOR SYS R

PROJ REACTnR SAFETY RR ENGINEERING BR KREGER/ J ~

COLLINS

~ POWER SYS BR K SEYFRIT/IE

",LPDR

,. NSIC

ACRS, ENCL' W/e ENCL W/ENCL W/ENCL

".I/2 ENCL W/3 ENCL 0/FNCL W/ENCL W/ENCL W/ENCL W/l NCL t4/ENCL W/ENCL W/ENCL w/ENCL W/FNCL W/ENCL W/ENCL

'l4/ENCL w/ENCL W/ENCL W/i6 ENCL" FOR ACTION

~

ORBI 3 BC TOTAL NUHRER QF. COPIES REOUIREnt LTR ENCL NOTES:

~

~

~

C I

TENNESSEE VALLEYAUTHORITY 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 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 Program Control 7g-(op<

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