ML19209C954
| ML19209C954 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 09/28/1979 |
| From: | Galen Smith, Stohr J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| References | |
| PNO-I-79-003, PNO-I-79-3, NUDOCS 7910180508 | |
| Download: ML19209C954 (1) | |
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'. ;v PRELIMINARY NOTIFICATION Date: September 28, 1979 PRELIMINARY OTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-T-79-03 This preliminary notification constitutes EARLY notice of events of POSSIBLE Tafety or publ,,i_q i_nteres t s iuniticance. "The intornat' ion oresente'd Ts as in'i'tial.ly, received without verification or. evaluation and is basically all that is known by IE s taff on this date'.
r,a,,,cy,1,i ty,:
Mainc Yankee Nuclear Power Station Wiscusset, Maine Docket No. 50-309 p
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UNSCHEDULED REl.EA.',E OF RADIOACTIVE MATERIAL
$N lin unscheduled gaseous release occurred at 1:05 a.n., September 20, 1979, during venting of a Sately Injection (ST) Tank.
I.ack of adeouate coordination between personnel venting the $1 Tank and the operator at the ' Waste Gas Storage Dru:n reiui ted in blowing out a loop: seal and venting gas in the s torage drum to the drIr: cry Vent Stack.
Three hundred cubic feet of ges was released over a 3 min:.Le period with the following rajor isotopic concentrations:
X0-133, 5.D E-1 uCi/cc: Xe-131m. 4.46 E-2 uti/cc: and Kr-85, 5.1 E-2 uC1/cc.
No release rate 1mits or other Technical 5pecificaion limits were exceeded.
Media interest is expected because of the general concern with respect to nuclear reactor facilities.
The State of Maine has been informcd.
A press release is not planne-J by the 1itensee or NRC at this tire.
Rw;1on I (Philadelphia) received notification of this matter by telephone from t,e licensee at 1:55 p.m. on September 28, 1979.
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Erith, R:, M S-12r.0 Nsnribution:
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'.. J. Fcuchard, FA R. J. Mattson,.!RP Landow (5 nin/page)
N. M. Haller, MFA D. Vassalio, NRR J. J. C_unm,_ngs, CIA
- -;. (i. Ryan, 05P D. Eisenhut, NRR
- w. K. Shapar, ELD 55 Bldg (MAIL)
W. J. Dircks, NM55 R. Minogue, SD P.cgion II S. Levine, RES IE:XOOS Recion ill-~~ '
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