ML060720046
| ML060720046 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 02/28/2006 |
| From: | Jensen J Indiana Michigan Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| AEP:NRC:2401-15, MI0005827 | |
| Download: ML060720046 (5) | |
Text
z Indiana Michigan Power INDIANA Cook Nuclear Plant MICHIGAN One Cook Place POWER' Bridgman,MI 49106 AEP.com A unit of American Electric Power February 28, 2006 AEP:NRC:2401-15 Docket Nos:
50-315 50-316 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop O-P1-17 Washington, D.C. 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 SUBMITTAL OF NON-COMPLIANCE NOTIFICATION FOR NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT M10005827 In a letter dated February 28, 2006, Indiana Michigan Power Company, the licensee for Donald C. Cook Nuclear Plant (CNP) Units 1 and 2, submitted a non-compliance notification for NPDES Permit M10005827 to the Michigan Department of Environmental Quality.
On February 23, 2006, at 1740 hours0.0201 days <br />0.483 hours <br />0.00288 weeks <br />6.6207e-4 months <br />, the concentration of Total Residual Oxidant (TRO) discharged via Outfall 001 to Lake Michigan was 39 pg/1.
This concentration exceeds the continuous discharge limit for TRO of 38 Ig/I.
In accordance with Section 3.2 of Part II of Appendix B of the Environmental Technical Specifications for CNP, a copy of the notification is being provided to the Nuclear Regulatory Commission as an attachment to this letter.
This letter contains no new commitments.
Should you have any questions or concerns regarding this notification, please contact Jolm P. Carlson, Environmental Manager, at (26!)) 465-5901, extension 1153.
. Jensen Site Vice President JEN/jn attachment LYOb
U. S. Nuclear Regulatory Commission AEP:NRC:2401-15 Page 2 c:
J. L. Caldwell - NRC Region 111 K. D. Cuny - AEP Ft. Wayne, w/o attachment J. T. King - MPSC, w/o attachment MDEQ - WHMD/HWRPS, w/o attachment NRC Resident Inspector P. S. Tam - NRC Washington DC
ATTACHMENT TO AEP:NRC:2401-15 NON-COMPLIANCE NOTIFICATION FOR NPDES PERMIT M10005827
Indiana Michigan INDIANA Power Company MICHGANCook Nuclear Plant MICFIGMP One Cook Place POW~ER BridgmanMI 49106 Mr. Greg Danneffel, District Supervisor Michigan Department of Environmental Quality Surface Water Quality Division 7953 Adobe Road Kalamazoo, MI 49009 February 28, 2006
Dear Mr. Danneffel:
Re:
Cook Nuclear Plant NPDES Permit MI0005827 This notification is provided as required by Part II, Section C.6.a of NPDES Permit MI0005827.
On February 23, 2006 at 1740 hours0.0201 days <br />0.483 hours <br />0.00288 weeks <br />6.6207e-4 months <br />, the concentration of Total Residual Oxidant (TRO) discharged via Outfall 001 to Lake Michigan was 39 pg/l. This concentration exceeds the continuous discharge limit for TRO of 38 pg/l.
On February 23, 2006 at 1732, a Chemical Technician responded to a Control Room alarm from the Orion 1770 Chlorine Analyzer alarm for Outfall 001. The initial TRO value was 26 ug/l.
The chemical delivery pump stroke was reduced however, the Outfall 001 TRO continued to rise and subsequently exceeded the permit limit at 1740.
The chemical delivery pumps were then secured, and further monitoring of the discharge indicated that the discharge concentration reached a maximum TRO of 45 ug/l at 1745 hours0.0202 days <br />0.485 hours <br />0.00289 weeks <br />6.639725e-4 months <br /> and fell below the permit limit of 38 pg/l TRO at 1750.
A "fresh" sodium hypochlorite delivery that occurred just prior to the event may have changed the concentration in the feed tank and caused the subsequent event.
The period of noncompliance occurred for ten minutes on February 23, 2006 from 1740 to 1750.
Our evaluation of the situation will result in changes to operating procedures that will prevent recurrence of this noncompliance.
The concentration of Total Residual Oxidant was very low and occurred over a very short time period and created no adverse environmental effects.
Should you have any questions please contact me at (269) 465-5901 ext. 1153.
Sincerely, hn P. Carlson Environmental Superintendent c:
Nuclear Regulatory Commission
Mr. Greg Danneffel/Total Residual Oxidant Exceedence February 28, 2006 Page 2 I certify under penalty of law that I have personally examined and am familiar with the information submitted on this and all attached documents, and based on my inquiry of those individuals immediately responsible for obtaining the information, I believe the submitted information is true, accurate and complete.
I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment.
Jo P. Carlson E vironmental Manager