Event Notification Report for April 01, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/31/2012 - 04/01/2012
EVENT NUMBERS
47794
Power Reactor
Event Number: 47794
Facility: COOK
Region: 3 State: MI
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BUD HINCKLEY
HQ OPS Officer: STEVE SANDIN
Region: 3 State: MI
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BUD HINCKLEY
HQ OPS Officer: STEVE SANDIN
Notification Date: 04/01/2012
Notification Time: 04:26 [ET]
Event Date: 04/01/2012
Event Time: 04:26 [EDT]
Last Update Date: 04/01/2012
Notification Time: 04:26 [ET]
Event Date: 04/01/2012
Event Time: 04:26 [EDT]
Last Update Date: 04/01/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
BILLY DICKSON (R3DO)
BILLY DICKSON (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 | N | 0 | Refueling | 0 | Refueling |
UNAVAILABILITY OF TSC VENTILATION SYSTEM DUE TO SCHEDULED MAINTENANCE
"At 0445 EDT on Sunday, April 1, 2012, the Cook Nuclear Plant (CNP) Technical Support Center (TSC) air conditioning and charcoal filtration systems will be removed from service for scheduled maintenance.
"Under certain accident conditions the TSC may become unavailable due to the inability of the air conditioning and charcoal filtration systems to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC personnel to the unaffected unit's control room if necessary.
"TSC ventilation system maintenance and post maintenance testing is scheduled to be completed by 1900 EDT on Sunday, April 1, 2012.
"The licensee has notified the NRC Resident Inspector.
"This notification is being made in accordance with 10 CFR 50.72 (b)(3)(xiii) due to the loss of an emergency response facility."
* * * UPDATE FROM DEAN BRUCK TO PETE SNYDER ON 4/1/12 AT 1633 EDT * * *
"The TSC ventilation system maintenance was completed satisfactorily and the system was restored to service at 1620 EDT on 4/1/12."
The licensee will notify the NRC Resident Inspector. Notified R3DO (Dickson).
"At 0445 EDT on Sunday, April 1, 2012, the Cook Nuclear Plant (CNP) Technical Support Center (TSC) air conditioning and charcoal filtration systems will be removed from service for scheduled maintenance.
"Under certain accident conditions the TSC may become unavailable due to the inability of the air conditioning and charcoal filtration systems to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC personnel to the unaffected unit's control room if necessary.
"TSC ventilation system maintenance and post maintenance testing is scheduled to be completed by 1900 EDT on Sunday, April 1, 2012.
"The licensee has notified the NRC Resident Inspector.
"This notification is being made in accordance with 10 CFR 50.72 (b)(3)(xiii) due to the loss of an emergency response facility."
* * * UPDATE FROM DEAN BRUCK TO PETE SNYDER ON 4/1/12 AT 1633 EDT * * *
"The TSC ventilation system maintenance was completed satisfactorily and the system was restored to service at 1620 EDT on 4/1/12."
The licensee will notify the NRC Resident Inspector. Notified R3DO (Dickson).