ML17329A096

Final NPDES Notification Re Exceeding Heat Addition Effluent Limitation on 910701-05 on Outfall 001 & 002. Cause Under Investigation.Power Reduction Initiated on 910705 to Meet Limitations

ML17329A096
Person / Time
Site:	Cook
Issue date:	07/11/1991
From:	Walters W INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	Morley F MICHIGAN, STATE OF
References
NUDOCS 9107240110
Download: ML17329A096 (3)

Text

ACCELERATED DISTRIBUTION DEMONS~TION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:9107240110 DOC.DATE: 91/07/11 NOTARIZED-NO DOCKET FACIL:50-315 Donald C.Cook Nuclear Power Plant, Unit 1, Indiana&05000315 50-316 Donald C.Cook Nuclear Power Plant, Unit 2, Indiana 6 05000316 AUTH.NAME AUTHOR AFFILIATION WALTERS,W.E.

Indiana Michigan Power Co.(formerly Indiana 6 Michigan Ele RECIP.NAME RECIPIENT AFFILIATION MORLEY,F.Michigan, State of

SUBJECT:

Informs that final evaluation of thermal discharge performance data on July 10 has revealed that heat addition effluent limitation was exceeded on 910701-05.Cause of exceedances currently being investigated.

'ISTRIBUTION CODE: IE23D COPIES RECEIVED:LTR 2 ENCL 8 SIZE: TITLE: Environmental Event Report (per Tech Specs)NOTES R D RECIPIENT ID CODE/NAME PD3-1 LA COLBURN,T.

INTERNAL: NRR/DREP/PEPB9D OGC/HDS2 RGN3 EXTERNAL: NRC PDR COPIES LTTR ENCL RECIPIENT ID CODE/NAME PD3-1 PD NRR/PMAS/KLRB12 PE: 'Q RGN2/DRS/EPRPB NSIC COPIES LTTR ENCL D D D NOTE TO ALL"RIDS" RECIPIENTS:

D D PLEASE HELP US TO REDUCE WASTE!CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT.20079)TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!TOTAL NUMBER OF COPIES REQUIRED LTTR 13 ENCL~0

~4 J*0 C j't~q l Indiana Michigan Power Company One Summit Square P.O.Box 60 Fort Wayne, IN 46801 219 425 2111 Fred Morley, District Supervisor Surface Water Quality Division Michigan Department of Natural Resources 621 North 10th Street P.0.Box 355 Plainwell, Michigan 49080 INDIANA NICHIGAN POMfER July ll, 1991

Dear Mr.Morley:

RE: NPDES Permit No.MI0005827 Cook Nuclear Plant Bridgman, Michigan Final evaluation of thermal discharge performance data on July 10 has revealed that the heat addition effluent limitation of 15.5 x 10 BTU/hr.was exceeded on July 1 through 5, 1991, on Outfalls 001 and 002.July 1 2 3 4 5 15.624 x 109 15.817 x 109 15.646 x 109 15.522 x 109 15.599 x 109 BTU/hr.BTU/hr.BTU/hr.BTU/hr.BTU/hr.The cause of the exceedances is currently being investigated.

Elevated Lake Michigan water temperatures and fouled condensers are thought to be contributing factors.Power reduction was initiated on July 5 to meet the heat addition limitation when we initially became aware of this developing situation.

We will continue to investigate the cause and monitor this condition to ensure compliance.

Very truly yours, W.E.Walters Executive Assistant WEW/sdb/018 c: A.B.Davis-NRC Region III J.A.Isom-NRR Resident Inspector Dr.T.E.Murley-NRR NRC Document Control 9i07240iiO 9i07ii'PDR ADOCK 05000315 FDF" gpfP