ML20151V205

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PNO-77-083:on 770511,unplanned Release of Radioactivity in Liquid Occurred.Plant Personnel Investigating to Determine Cause.Monitoring of Turbine Bldg Sump & Yard Drainage Sys Continuing
ML20151V205
Person / Time
Site: Oconee  Duke Energy icon.png
Issue date: 05/12/1977
From: Gower G, Roy G, Thompson D
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-77-083, PNO-77-83, NUDOCS 9809140159
Download: ML20151V205 (1)


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-._.PREL_IMINARY NOTIFICATION May 12, 1977 PRELIMINA2Y NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-77-83 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 on this date.

Facility: Oconee Nuclear Station Duke Power Company Subject-UNPLANNED RELEASE OF RADI0 ACTIVITY IN LIQUID EFFLUENTS On May 12, 1977, Oconee Station personnel informed Region II that an unplanned release of rc2ioactivity in liquid occurred on May 11, 1977.

According to Oconee personnel, above-nermal levels of radioactivity were i

released from a turbine building sump, to the Kaowee River via a yard drainage system. Oconee personnel stated that no technical specifi-catiou release limits were exceeded.

,l l The cause of the abnormal levels of radioactivity are not known at this time. Ocoree personnel are currently investigating to determine the j

cause of the incident. Oconee perJonnel indicate that monitoring of the i

Turbine Building Sump and Yard Drainage System is continuing.

i' Duke has made a press release concerning the incident. A copy of this release is attached. State of South Carolina radiological protection officials and Clemson University officials have been notified according to Oconee personnel.

Region II inspectors will be on site May 13 to followup on this incident.

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pntact: GCGower, IE x27261 GWRoy, IE x27261 DThompson, IE x27541 Distribution: Transmitted H St Yf[M Chairman Rowden C.' C. Kammerer, CA G. F. Murphy, JCAE Commissioner Kennedy S. J. Chilk, SECY H. H. Whiteside, SCNR Commissioner Gilinsky H. R. Myers, HCEE Transmitted: HNBB I d' P Bldg

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SS Bldg 9.'!.f L. V. Gossick, EDO E. G. Case, NRR C. V. Smith, NMSS S. H. Hanauer, EDO Q/

j J. A. Harris, PA

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W. G. Mcdonald, MIPC Luge (MAIL)

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R. G. Ryan, OSP T. J. McTiernan, OIA Region >p u, IEfj H. K. Shapar, ELD M'R m -

PRELIMINARY NOTIFICATION

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9009140159 770512 PDR I&E PNO-77-083 PDR

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