ML20151X757
| ML20151X757 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/26/1977 |
| From: | Bidinger G, Higginbotham L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-77-134, NUDOCS 9809170235 | |
| Download: ML20151X757 (1) | |
Text
Pfl / ( A/l4%, i/r <' +f /M PREL1HINARY NOTIFICATION
. _ Jg y [p//j/
July 26, 1977 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-77 134 This preliminary notification constitutes EARLY notice of an hvent 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:
Duquesne Light Company (DN 50-334)
Beaver Valley Unit 1 Shippingport, Pennsylvania 3
Subject:
UNPLANNED RELEASE OF RADI0 ACTIVE MATERIAL "i.-
At 1:00 p.m., July 25, 1977, a. Primary Water Storage Tank overflowed during i
a filling operation and dumped 9000 gallons of slightly radioactive water onto the ground. The water contained Tritium at a concentration of 1.1x10-)
microcuries per milliter.
No other radioactive materials were present. A portion of this water (quantity unknown) flowed to the Ohio River via a storri drain. The remaining water settled into the ground underneath the tant.
Samples of river water taken downstream of the storm drain were analyzed and showed a tritium concentration of 2x10-5 microcuries per milliter, which is below the 10 CFR.Part 20 effluent release limit of 3x10-3 microcuries per milliter for tritium to unrestricted areas.
This unplanned release was caused by a valving error during the tank filling operations.
Media interest is expected because of close attention to releases of radioactive material from nuclear facilities. The Comonwealth of G.
W*
Pennsylvania has been informed. A press release will be made by the
/
NRC.
/
NRC, Region I, (Philadelphia) received notification of this occurrence by h
telephone from the Station Superintendent at 5:00' p.m., on July 25, 1977.
O j
GHBidinger, IE x27353 LBHigginbotham, IE x27347 2
Contact:
l Distribution: Transmitted H St I! Y ;
Comissioner Kennedy C'. C. Kamerer, CA G. F. Murphy, JCAE Comissioner Gilinsky S. J. Chilk, SECY H. H. Whitesi@,, SCNR H. R. Myers, HCEE t
Transmitted: MNBBh*8[S~
P Bldg /f f/ 7_
SSBldgf.',W L. V. Gossick, EDO E. G. C~ase,' ifRR C. V. Smith NMSS S. H. Hanauer, ED0 J. A. Harris, PA W. G. Mcdonald, MIPC Luge (MAIL)
E. Volgen
, IE H. K. Shapar, ELD Region
/jf0 R. G. Ryan, OSP T. J. McTiernan, OIA PRELIMINARY NOTIFICATION i
, ~, r "q 9809170235 770726 PDR I&E PNG-77-134 PDR
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