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Event Notification Report for April 15, 2009

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
04/14/2009 - 04/15/2009

EVENT NUMBERS
449924499345040

Power Reactor
Event Number: 44992
Facility: COOK
Region: 3     State: MI
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DEAN BRUCK
HQ OPS Officer: VINCE KLCO
Notification Date: 04/15/2009
Notification Time: 07:31 [ET]
Event Date: 04/15/2009
Event Time: 04:15 [EDT]
Last Update Date: 04/15/2009
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
LAURA KOZAK (R3)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N N 0 Cold Shutdown 0 Cold Shutdown
2 N N 0 Refueling 0 Refueling
Event Text
UNAVAILABILITY OF TSC VENTILATION SYSTEM AND CHARCOAL FILTER DURING SCHEDULED MAINTENANCE

"At 0415 on Wednesday, April 15, 2009, the Cook Nuclear Plant (CNP) Technical Support Center (TSC) ventilation system and charcoal filter was removed from service for scheduled preventive maintenance. The charcoal bed filtration system is also out of service in support of the maintenance on the TSC ventilation system.

"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 maintenance is scheduled to complete at 1600 on Wednesday, April 15, 2009.

"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 the loss an emergency response facility."

* * * UPDATE FROM DEAN BRUCK TO JOHN KNOKE AT 1352 ON 4/15/09 * * *

"At 1255 on Wednesday, April 15, 2009 the planned maintenance and testing was completed. The TSC ventilation system and charcoal filter have been returned to service restoring full availability to the TSC.

"The licensee has notified the NRC Senior Resident Inspector." Notified R3DO (Laura Kozak)


Power Reactor
Event Number: 44993
Facility: OYSTER CREEK
Region: 1     State: NJ
Unit: [1] [] []
RX Type: [1] GE-2
NRC Notified By: GEORGE VOISHNIS
HQ OPS Officer: JOHN KNOKE
Notification Date: 04/15/2009
Notification Time: 20:19 [ET]
Event Date: 04/15/2009
Event Time: 16:44 [EDT]
Last Update Date: 04/15/2009
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
ART BURRITT (R1)
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
Event Text
OFFSITE NOTIFICATION DUE TO POTENTIAL RELEASE OF TRITIUM

"Oyster Creek notified the New Jersey Department of Environmental Protection of a potential release due to the discovery of detectable levels of Tritium in a cable vault that was found while replacing the cable to an [Emergency Service Water] ESW pump. No release is known to be occurring and no release is known to have occurred. The source of the Tritium water is not currently known. A prompt investigation is in progress."

The licensee has notified the NRC Resident Inspector.


General Information or Other
Event Number: 45040
Rep Org: TEXAS DEPARTMENT OF HEALTH
Licensee: DOW CHEMICAL COMPANY
Region: 4
City: PORT LAVACA   State: TX
County:
License #: 00051
Agreement: Y
Docket:
NRC Notified By: ART TUCKER
HQ OPS Officer: BILL HUFFMAN
Notification Date: 05/04/2009
Notification Time: 13:40 [ET]
Event Date: 04/15/2009
Event Time: 00:00 [CDT]
Last Update Date: 05/04/2009
Emergency Class: NON EMERGENCY
10 CFR Section:
Person (Organization):
WAYNE WALKER (R4DO)
ANGELA MCINTOSH (FSME)
Event Text
AGREEMENT STATE REPORT - PROCESS LEVEL GAUGE SHUTTER STUCK OPEN

The following report was received from the Texas Department of State Health Services via e-mail:

"The licensee reported that during the performance of a routine six month inspection, the shutter on an Ohmart/VEGA level gauge model SH-F2, containing a 200 mCi Cesium (Cs) - 137 source, serial # 7548GK, would not properly close. The gauge is used as a level monitor on a vent stack. The source was left in its normal operating position and does not pose an exposure risk to individuals. Radiation levels in the area were measured and found to be normal. As a corrective action, the licensee lubricated the operating mechanism on the gauge. They again tried to operate the mechanism, but could not. They continued to lubricate the mechanism periodically in an effort to free the mechanism. The licensee contacted a service provider and arrangements were made for assistance in closing the shutter if needed. On 4/29/09, the licensee was able to close the mechanism and operate the shutter normally. There was no apparent damage to the shutter operating mechanism."

Texas Report Number I-8633