ML19256C829
| ML19256C829 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 07/31/1979 |
| From: | Liza Cunningham, Higginbotham L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-79-294, NUDOCS 7910150012 | |
| Download: ML19256C829 (1) | |
Text
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PRELIMINARY NOTIFICATION July 31, 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-79-294 This oreliminary notification constitutes EARLY notice of events of POSSIBLE e]
safety or public interest sionificance.
The information oresented is as initially received without verification or evaluation and is basicElly all that is known by IE staff on this date.
Facility: Commonwealth Edison Company, Dresden Units 2/3 (DNS S0-237 & 50-249) Morris, Illinois Subiect:
DISCHARGE OF CHLORINE FROM OVERFL0h' 0F S0DIUM HYP0CLORITE TANK TO GROUND NEAR UNIT 2/3 CRIB HOUSE On July 31, 1979, a discharge of less than 500 gallons of sodium hypochlorite occurred as a result of overflow of the tank located in the Unit 2/3 crib-house.
The 10% solution discharged in puddles to the ground surrounding the cribhouse.
The overflow resulted from back flushing of the service water line because of an open valve or a stuck check valve.
The licensee plans to wash the puddles to the Unit 2/3 condenser intake where the solution will be further diluted in the cooling lake.
Samples of chlorine residuals will be taken.
The licensee declared a Generating Stations Emergency Plan alert.
This discharge did not involve an of fsite release and no radiation releases were involved in this occurrence.
Unit 2 was shutdown and Unit 3 was in operation at the time of this occurrence.
The EPA and State of Illinois have been informed.
Tne licensee and Region III do not plan to issue a press release but will respond to inquiries.
NRC, Region III (Chicago) received notification of this occurrence by telephone from the Nuclear Division Manager on duty at 7:40 a.m on July 31, 1979.
Contact:
LJCunningham, IE x28183 LBHigginbotham, IE x28188 Distribution:
Transmitted H St Chairman tiendrie Commissioner Bradford S. J. Chil k, SECY Com.issioner Kennedy Commissioner Ahearne C. C. Kammerer, CA Com-issioner Gilinsky ACRS (For Distribution)
Transmitted:
MNSB P. Bldg '27 6 V. Stello, IE L. V. Gossick, EDO H.
P..
Denton, NRR Region 1(i H.
L. Ornstein, EDO R. c. DeYoung, NRR J. J. Fouchard, PA R. J. Mattson, NRR N. M. Haller, MPA D. Vassallo, NRR (MAIL)
R. G. Ryan, OSP D. Eisenhut, NRR J. J. Cummings, OIA H. K. Shapar, ELD SS Bldg R. Minogue, SD W. J. Dircks, NMSS
- 5. Levine, RES PRELIMINARY NOTIFICATION Q
/ 4. I 7910150 N
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