ML17332A696

NPDES Noncompliance Notification:On 950301,bypass Discharge from Turbine Room Sump Through Emergency Over Flow Piping Into Intake Forebay to Lake Michigan

ML17332A696
Person / Time
Site:	Cook
Issue date:	03/20/1995
From:	Fitzpatrick E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
AEP:NRC:1208H, NUDOCS 9503270141
Download: ML17332A696 (4)

Text

R.IC) R.I "EY' PCCELERATED RIDS PROCESSING)

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9503270141 DOC.DATE: 95/03/20 NOTARIZED: NO DOCKET g FACIL:50-315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana M 05000315 50-316 Donald C. Cook Nuclear Power Plant, Unit 2, Indiana M 05000316 AUTH. NAME AUTHOR AFFILIATION P FITZPATRICK,E. Indiana Michigan Power Co. (formerly Indiana 6 Michigan Ele RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

NPDES noncompliance notification:on 950301,bypass discharge I from turbine room sump through emergency over flow piping into intake forebay to Lake Michigan.

DISTRIBUTION CODE: COOID COPIES RECEIVED:LTR ( ENCL ~ SIZE:

TITLE: Licensing Submittal: Environmental Rept Amdt 6 Related Correspondence NOTES RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR E CL ID CODE/NAME LTTR ENCL PD3-1 PD HICKMAN,J INTERN~FILE CENTER 01 OGC/HDS2 RGN3 'RSS/RPB EXTERNAL LITCO 'KERS i D NOAC 1 I NRC PDR D

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N NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM PI-37 (EXT. 504-2083 ) TO ELIMINATEYOUR NAME FROM DISTRIBUTIONLISTS FOR DOCUMENTS YOU DON'T NEEDI O

TOTAL NUMBER OF COPIES REQUIRED: LTTR 8 ENCL

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indiana Michigan

.,Power Company P.O. Box 16631 Columbus, OH 43216 March 20, 1995 AEP:NRC:1208H Docket Nos.: 50-315 50-316 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Gentlemen:

Donald C. Cook Nuclear Plant Units 1 and 2 TURBINE ROOM SUMP DISCHARGE This notification is forwarded for your information pursuant to Appendix "B" of the Donald C. Cook Nuclear Plant Environmental Technical Specifications. The subject of this notification concerns a by-pass discharge on March 1, 1995, from the turbine room sump (TRS) through emergency over flow piping into the intake forebay to Lake Michigan.

The cause of the discharge was due to a failure of the regulating valve (DRV-710) to open when signaled. The valve was eventually opened by defeating the air regulator to the valve and manually increasing the air pressure, forcing the valve to open. An action request has been initiated to repair DRV-710. Until DRV-710 is repaired, turbine room sump releases are being controlled by a manual isolation valve. The waters are sampled for pH and batch released via procedure 12-OHP 4021.062.001.

The pH range of the TRS water during the inadvertent discharge to the lake was 8.5 to 9.0. Outfalls 001 and 002 were analyzed for pH and outfall observations were performed at 0830 on March 1, 1995.

The pH for outfall 001 water was 8.2. An outfall observation of 1 was made, meaning that the water was free of any unusual characteristics of the discharge, i.e., unusual turbidity, color, oil film, floating solids, foams, settleable solids or deposits.

The pH for outfall 002 was 7.9, and an outfall observation of 1 was also made. The maximum estimated flow to the intake forebay was 0.016 million gallons. Five of the plant's seven circulating water pumps were on at the time of the by-pass.

As required by the Cook Nuclear Plant National Pollutant Discharge Elimination System (NPDES) Permit No. MI6005827, written 9503270141 950320 PDR ADOCK 05000315 S PDR

~ U. S. Nuclear Regulatory Commission AEP:NRC'1208H Page 2 notification of this event was provided on March 2, 1995, to the Surface Water Quality Division of the Michigan Department of National Resources. This type of discharge is included in the proposed NPDES permit under outfall OOH.

Should you have any questions or concerns regarding this notification, please contact Dane Mazzitti at (614) 223-2085.

Sincerely, E. E. Fitzpatrick Vice President pit cc: A. A. Blind G. Charnoff J. B. Martin NFEM Section Chief J. R. Padgett