ML20084R365

Telecopy Ro:On 730610,I-131 Release Rate Sample from 730607 Counted & Found to Exceed Limit.Cause Attributed to Steam Leakage Into Unit 2 Reactor Bldg from Cleanup Pump Seal Failure.Sample from 730608 Returned to Less than 30%

ML20084R365
Person / Time
Site:	Quad Cities
Issue date:	06/11/1973
From:	Kalivianakis N COMMONWEALTH EDISON CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084R350	List: ML20084R348 ML20084R365 ML20084R389
References
NUDOCS 8306150077
Download: ML20084R365 (2)

Text

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_O RERERENCE REFERENCE QUAD CITIES NUCLEAR POWER STATION UNITS O ONE AND TWO DOCKET NUMBERS 50-254 AND 50-265 DPR 29 AND 30, APPENDIX A SECTION 1.0. A.2 AND 3.8.B.3. A TECHNICAL SPECIFICATION O 3.8.B .3. A SPECIFIES THE RELEASE RATE LIMIT FOR 10 DINE-131 AND O PARTICULATES WITH HALF LIVES LONGER THAN 8 DAYS FROM THE REACTOR BUILDING VENTILATIONS STACK. THE NORMAL PRACTICE IS TO COUNT O THE SAMPLE CARTRIDGE 48 HOURS AFTER REMOVAL TO DETERMINE A PRELIMINAR O Y ESTIMATE OF THE RELEASE RATE. THE ACTUAL RELEASE RATE IS BASED ON THE RESULTS OF A 7 DAY COUNT. ON JUNE 10 1973 THE JUNE 7TH O SAMeLE WAS C0uNTED AND DuE TO AN INCREASE IN THE ACTIVITY FROM O THE UNIT WO REACTOR BUILDING IT IS ESTIMATED THAT THE LCO WAS n EXCEEDED BY ABOUT 50 PER CENT. THIS INCREASE WAS ATTRIBUTED U TO STEAM LEAKAGE INTO THE UNIT TWO BUILDING FROM A CLEAN UP O PUMP SEAL FAILURE. THE 48 HOUR COUNT OF THE JUNE 8 1973 SAMPLE HAS RETURNED TO LESS THAN 30 PER CENT OF THE LCO.

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