ML20248H611

PN0-78-090:on 980421,Unit 1 Shutdown Commenced Due to SG Tube Leak.Unit 1 Will Be Placed in Cold Shutdown Condition, Portion of RCS Drained & SG Leak Tested to Identify Leaking Tubes for Repair.Estimated Duration of 2 Weeks for Shutdown

ML20248H611
Person / Time
Site:	Oconee
Issue date:	04/24/1978
From:	Klingler G, Nolan F, Sniezek J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
References
PNO-78-090, PNO-78-90, NUDOCS 9806080167
Download: ML20248H611 (1)

Text

u

@ hhUOO R Ocp>3 W PRELIMINARY NOTIFICATION a isNh [( h

) April 24, 1978 h PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-78-90 This preliminary notification constitutes EARLY notice of an event +

of POSSIBLE_ safety or public interest significance. The information presented is as initially received without verification or evaluation and is basically all that is known by IE staff as of this date.

FACILITY: Duke Power Company Oconee, Unit No.1 Docket Number 50-269 Oconee County, South Carolina

SUBJECT:

STEAM GENERATOR TUBE LEAK A Unit No.1 shutdown comenced at 12:15 p.m. on April 21 due to a steam generator tube leak of 0.32 gpm. The unit will be placed in cold i shutdown condition, a portion of the reactor coolant system drained, and  ;

the steam generator leak tested to identify the leaking tube (s) for i repair. The estimated duration of the shutdown is two wee,ks. ,

There has been no media interest. A news release was issued on April 21 by the licensee. The NRC does not plan to issue a news release. The

( State of South Carolina has been notified.

Region II (Atlanta) received notification of this occurrence by telephone '

from the licensee at 4:20 p.m. on April 21. This information is current as of 8:00 a.m. on April 24.

GKlingler, IE x28019 FNolan, IE x28019 JSniezek, IE x28019

Contact:

Distribution: Transmitted H St /D ; 03 Chairman Hendrie Commissioner Bradford Commissioner Kennedy S. J. Chilk, SECY C. C. Kammerer, CA Commissioner Gilinsky (For Distribution)

Transmitted: MNBB /0 0 b P Bldg /0 5 O E. Volge IE l L. V. Gossick, ED0 E. G. Case, NRR Region ~ /070 7 S. H. Hanauer, EDO J. J. Fouchard, PA SS Bldg /b 'Of (MAIL) l N. M. Haller, MPA C. V. Smith,'NMSS T. J. McTiernan, OIA R. G. Ryan, OSP R. Minogue, SD H. K. Shapar, ELD

~

PRELIMINARYNOTIFICATiON ' l ]

C9

(

98 60 67 780424 PNO-78-090 PDR I

_ _ _ _ _ _ _ _ _ _