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Event Notification Report for March 21, 2007

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
03/20/2007 - 03/21/2007

EVENT NUMBERS
43253

Power Reactor
Event Number: 43253
Facility: PRAIRIE ISLAND
Region: 3     State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: TERRY BACON
HQ OPS Officer: JOHN MacKINNON
Notification Date: 03/21/2007
Notification Time: 20:05 [ET]
Event Date: 03/21/2007
Event Time: 18:45 [CDT]
Last Update Date: 03/21/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
PATTY PELKE (R3)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation
2 N Y 100 Power Operation 100 Power Operation
Event Text
OFFSITE NOTIFICATIONS MADE TO STATE , LOCAL AND COUNTY AGENCIES

"The Prairie Island Nuclear Plant has a turbine building sump that collects water from the secondary side of the plant and this water contains trace levels of tritium. When we normally discharge the water from the sump, it is either sent to the river or to a permitted area on plant property. Earlier today, the discharge was lined up to the permitted area on plant property. The end of the line was frozen, causing approximately 100 - 150 gallons of the water to be diverted to a non-permitted area inside the plant property.

"This notification is being made due to the notification of offsite agencies (state , local and county)."

The NRC Resident Inspector was notified of this event by the licensee.