AEP-NRC-2012-37, Submittal of Turbine Room Sump Ph Lower Limit Exceedance

Submittal of Turbine Room Sump Ph Lower Limit Exceedance

ML12158A101
Person / Time
Site:	Cook
Issue date:	05/15/2012
From:	Scarpello M Indiana Michigan Power Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
AEP-NRC-2012-37
Download: ML12158A101 (4)

Text

INDIANA MICHIGAN Indiana Michigan Power POWE1R0 One Cook Place Bridgman, MI 49106 A unit of American Electric Power IndianaMichiga nPower.com May 15, 2012 AEP-NRC-2012-37 10 CFR 50.4 Docket No: 50-315 50-316 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Donald C. Cook Nuclear Plant Units 1 & 2 SUBMITTAL OF TURBINE ROOM SUMP pH LOWER LIMIT EXCEEDANCE In a letter dated May 2, 2012, Indiana Michigan Power Company (I&M), the licensee for Donald C. Cook Nuclear Plant (CNP) Units 1 and 2, submitted a notification of Turbine Room Sump (Outfall 0OD) pH lower limit of 6.5 exceedance for Groundwater Permit GW 1810102 to the Michigan Department of Environmental Quality. On April 29, 2012, between 1756 hours0.0203 days <br />0.488 hours <br />0.0029 weeks <br />6.68158e-4 months <br /> and 1908 hours0.0221 days <br />0.53 hours <br />0.00315 weeks <br />7.25994e-4 months <br />, the Turbine Room Sump pH lower limit of 6.5 was exceeded. During this period of discharge, approximately 49,000 gallons of pH 6.13-6.52 water was discharged to the onsite absorption pond. Absorption pond pH value was 7.98, indicating the discharge had little effect on the ponds overall pH.

A copy of the notification is enclosed in accordance with CNPs Environmental Technical Specification, Part II- Nonradiological Environmental Protection Plan, Section 5.4.2.

This letter contains no new commitments. Should you have any questions, please contact Jon Harner, Environmental Manager, at (269) 465-5901, extension 2102.

Sincerely, Michael K. Scalpello Regulatory Affairs Manager

Enclosure:

Letter from J. H. Harner, Indiana Michigan Power Company, to K. Jordan, Michigan Department of Environmental Quality, "Indiana Michigan Power Company, Donald C. Cook Nuclear Plant, NPDES Permit No. M10005827, GW Permit No GW 1810102," dated May 2, 2012.

KMH/jmr cccA

U.S. Nuclear Regulatory Commission AEP-NRC-2012-37 Page 2 c: J. T. King - MPSC S. M. Krawec - AEP Ft Wayne MDEQ- RMD/RPS NRC Resident Inspector C. D. Pederson - NRC Region III P. S. Tam, NRC Washington DC

ENCLOSURE TO AEP-NRC-2012-37 LETTER DATED MAY 2, 2012 pH LOWER LEVEL LIMIT EXCEEDANCE FOR GROUNDWATER PERMIT NO. GW1810102

INDINA,*

MICHIGAN* Indiana Michigan Power

• 1v~E*b One Cook Place Bridgmnan, Ml 49106 A unit ofAmerican Electric Power IndianaMichiganPowercom May 2, 2012 AEP-MDEQ-2012-02 Michigan Department of Environmental Quality Mr: Kameron Jordan, District Supervisor Surface Water Quality Division 7953 Adobe Road Kalamazoo, MI 49009

Subject:

Indiana Michigan Power Company Donald C. Cook Nuclear Plant NPDES Permit No. Mi 0005827 GW Permit No GW1810102

Dear Mr. Jordan,

This notification is made pursuant to Indiana Michigan Power Company, the licensee for Donald C. Cook Nuclear Plant (CNP) Units I and 2, Ground Water Permit GW1 810102 Part I, Section 11 b, Compliance Requirements.

On April 29, 2012, between 1756 hours0.0203 days <br />0.488 hours <br />0.0029 weeks <br />6.68158e-4 months <br />, and 1908 hours0.0221 days <br />0.53 hours <br />0.00315 weeks <br />7.25994e-4 months <br />, the Turbine Room Sump (Outfall OOD) pH lower limit of 6.5 was exceeded. During this period of discharge, approximately 49,000 gallons of pH 6.13-6.52 water was discharged to the onsite absorption pond. A sample of the absorption pond was obtained and analyzed April 30, 2012, at 0930 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.53865e-4 months <br />. Absorption pond pH value was 7.98, indicating the discharge had

-little effect on the pond's overall pH. On Monday, April 30, 2012, I&M staff contacted your office and provided verbal notification of this exceedance.

Should you have any questions, please. contact me at (269) 465-5901, extension 2102.

Sincerely, Jon H. Hamer Environmental Manager KMH/jmr