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Event Notification Report for January 13, 2010

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
01/12/2010 - 01/13/2010

** EVENT NUMBERS **


45620 45625 45627

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Power Reactor Event Number: 45620
Facility: COOK
Region: 3 State: MI
Unit: [1] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BEN HUFFMAN
HQ OPS Officer: HOWIE CROUCH
Notification Date: 01/11/2010
Notification Time: 14:00 [ET]
Event Date: 01/12/2010
Event Time: 04:00 [EST]
Last Update Date: 01/12/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
CHRISTINE LIPA (R3DO)

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

UNAVAILABILITY OF TSC VENTILATION SYSTEM AND CHARCOAL FILTER FOR SCHEDULED MAINTENANCE

"The Cook Nuclear Plant (CNP) Technical Support Center (TSC) ventilation system air conditioning and filtration systems are scheduled to be removed from service for scheduled preventive maintenance at 0400 on January 12, 2010.

"Under certain accident conditions, the TSC may become unavailable due to the inability of the filtration system to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC personnel to the unaffected unit's control room if necessary based upon results of procedurally required monitoring of TSC radiological conditions.

"The TSC ventilation system air conditioning and filtration systems are scheduled to be restored to service by 1400 on Tuesday January 12, 2010.

"The licensee has notified the NRC Senior Resident Inspector.

"This notification is being made in accordance with 10 CFR 50.72 (b)(3)(xiii) due to unavailability of an emergency response facility."

* * * UPDATE FROM BEN HUFFMAN TO HOWIE CROUCH @ 1420 EST ON 01/12/10 * * *

"The TSC ventilation system and charcoal filter were returned to functional status at 1418 EST on Tuesday, January 12, 2010.

"This follow up notification is being made to provide closure of the initial notification under 10 CFR 50.72 (b)(3)(xiii)."

The licensee has notified the NRC Resident Inspector. Notified R3DO (Lipa).

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Power Reactor Event Number: 45625
Facility: HARRIS
Region: 2 State: NC
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP
NRC Notified By: MARGARET MALLOY
HQ OPS Officer: HOWIE CROUCH
Notification Date: 01/12/2010
Notification Time: 14:10 [ET]
Event Date: 01/10/2010
Event Time: 08:30 [EST]
Last Update Date: 01/12/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
SCOTT SHAEFFER (R2DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

OFFSITE NOTIFICATION DUE TO DISCOVERY OF TRITIUM IN WATER LEAKAGE ONSITE

"At 8:30 a.m. on January 10, 2010, an operator on regular rounds discovered the underground Waste Neutralization Basin Flash Mixer Return Pipe had developed a leak. The eight-inch fiberglass pipe carries secondary plant and water treatment building waste water for chemical processing. Approximately 1,000 gallons of water containing a low level of tritium (5,590 picocuries per liter) leaked into the surrounding soil. The EPA Drinking Water Standard is 20,000 picocuries per liter.

"Once the leak was discovered, the system was secured and the leak was isolated. Crews are repairing the pipe. The spill has been contained within the plant backfill and is unlikely to migrate off-site or reach the water table. The affected area is located within the plant's site boundary, approximately 15 feet west of the Water Treatment Building, and involves roughly 100 cubic feet of soil. Once repaired, the system will be tested and returned to service.

"Immediate remedial actions involving the affected area include: pumping the water from the saturated ground back into the waste neutralization basin, removal of the tritiated soil and sampling soil in the area for tritium analysis.

"The health and safety of the public are not affected by this event, based on the location of the leak and the low tritium levels. Harris Nuclear Plant is following the guidance in NEI 07-07 and has initiated this Event Notification as a result of our voluntary communication to State agencies in accordance with the Groundwater Protection Initiative."

The licensee will be notifying North Carolina Divisions of Radiation Protection and Water Quality and has notified the NRC Resident Inspector.

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Power Reactor Event Number: 45627
Facility: MCGUIRE
Region: 2 State: NC
Unit: [1] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: TONY COOK
HQ OPS Officer: VINCE KLCO
Notification Date: 01/13/2010
Notification Time: 02:24 [ET]
Event Date: 01/13/2010
Event Time: 01:59 [EST]
Last Update Date: 01/13/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD
Person (Organization):
SCOTT SHAEFFER (R2DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 89 Power Operation
2 N Y 100 Power Operation 100 Power Operation

Event Text

TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO CONTROL ROOM CHILLERS OUT OF SERVICE

"The A-YC chiller [was] shutdown and tagged for yearly inspection and work. The B-YC chiller has developed a refrigerant leak and has been declared inoperable. This places both Unit 1 and Unit 2 in Tech Spec 3.0.3. Both units will have to be in Mode 3 within 7 hours; Mode 4 within 13 hours; and 37 hours to be in Mode 5. 3.0.3 was declared at 2332 on 1/12/2010. The event time is when Unit 1 began load reduction. Unit 2 will commence load reduction at 0230."

The licensee notified the NRC Resident Inspector.

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