ML19256C830
| ML19256C830 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 07/31/1979 |
| From: | Bryan S, Klinger G, Nolan F NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-79-296, NUDOCS 7910150014 | |
| Download: ML19256C830 (1) | |
Text
PRELIMINARY NOTIFICATION July 31, 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-79-295 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest sionificance.
The information presented is as initially received without verification or evaluation and is basically all that is known by IE staf f on this date.
4 Facility: Commonwealth Edison Company, Dresden Unit 2 (DN 50-237) Morris, Illinois Subiect:
PLANT SHUTDOWN TO CORRECT EXCESSIVE UNIDENTIFIED DRYWELL LEAKAGE The unit was removed from service on July 31, 1979, to correct excessive unidentified drywell leakage.
A cooldown is in progress, and a hydrostatic test will be conducted to identify the location of the leak which is suspected of being in the A Recirculation Pump Seal Leak Detection line.
The unit had been operating at
'ced loads since July 27, 1979, when the leakage rate reached a maximum o s.6 gpm (TS Limit less than or equal to 5.0 gpm), and drywell inspections had been made on July 27 and 28,1979, to identify and correct, if possible, the leakage problem.
At the time of shutdown the unit was operating at about 60% power, the leakage rate was about 3.5 gpm ar.d no operating problems were being encountered.
The duration of this snutdown is estimated to be 2 - 3 days.
The tesident inspector closely monitored tr.e licensee's actions regarding this matter.
The licensee's plans regarding a press release are unknown.
RIII will consider issuing a press release.
The State of Illinois is being notified.
RIII was notified of this matter by the resident inspector at 6:30 p.m. on July 30, 1979.
Contact:
GKlingler, IE x28019 FNolan, IE x28019 SEBryan, IE x28019 Distribution:
Transmitted H St Cnairman hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kammerer, CA Com.issioner Gilinsky ACRS (For Distribution)
Transmitted:
MNSB P. Bldg - C5 V. Stello, IE L. V. Gossick, EDO H. R. Denton, NRR Region lll H.
L. Ornstein, EDO R. C. DeYoung, NRR J. J. Fcuchard, PA R. J. Mattson, NRR N. M. Haller, MPA D. Vassallo, NRR (MAIL)
R. G. Ryan, OSP D. Eisenhut, NRR J. J. Cummings, 0IA H. K. Shapar, ELD SS Bldg R. Minogue, SD W. J. Dircks, NMSS S. Levine, RES 437 7 %
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PRELIMINARY NOTIFICATION 7 91015 0O/9 g