Event Notification Report for December 03, 2011
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/02/2011 - 12/03/2011
EVENT NUMBERS
47496
Power Reactor
Event Number: 47496
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: JASON BOOKMILLER
HQ OPS Officer: VINCE KLCO
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: JASON BOOKMILLER
HQ OPS Officer: VINCE KLCO
Notification Date: 12/03/2011
Notification Time: 16:53 [ET]
Event Date: 12/03/2011
Event Time: 12:35 [EST]
Last Update Date: 12/03/2011
Notification Time: 16:53 [ET]
Event Date: 12/03/2011
Event Time: 12:35 [EST]
Last Update Date: 12/03/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Person (Organization):
WAYNE SCHMIDT (R1DO)
WAYNE SCHMIDT (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
SECONDARY CONTAINMENT INOPERABLE DUE TO A DEGRADED DOOR SEAL
"On December 3, 2011 during operator rounds, it was discovered that an Enclosure Building (secondary containment) door sweep had failed and was not providing an adequate seal.
"Technical Specification (TS) 3.6.5.2, 'Secondary Containment Enclosure Building', is applicable in Modes 1,2,3, and 4 was entered at 1235 [EST]. Since secondary containment was rendered inoperable, Dominion is reporting this as a condition that could have prevented the fulfillment of the safety function to control the release of radioactive material. The door has subsequently been repaired, the Enclosure Building declared OPERABLE and the TS Action Statement exited at 1524 [EST]. Further engineering review will be conducted to more fully evaluate the impact on radiological controls.
"This condition is being reported pursuant to 10 CFR 50.72(b)(3)(v)(C)."
The licensee has notified the Connecticut Department of Environmental Protection, surrounding towns and the NRC Resident Inspector.
"On December 3, 2011 during operator rounds, it was discovered that an Enclosure Building (secondary containment) door sweep had failed and was not providing an adequate seal.
"Technical Specification (TS) 3.6.5.2, 'Secondary Containment Enclosure Building', is applicable in Modes 1,2,3, and 4 was entered at 1235 [EST]. Since secondary containment was rendered inoperable, Dominion is reporting this as a condition that could have prevented the fulfillment of the safety function to control the release of radioactive material. The door has subsequently been repaired, the Enclosure Building declared OPERABLE and the TS Action Statement exited at 1524 [EST]. Further engineering review will be conducted to more fully evaluate the impact on radiological controls.
"This condition is being reported pursuant to 10 CFR 50.72(b)(3)(v)(C)."
The licensee has notified the Connecticut Department of Environmental Protection, surrounding towns and the NRC Resident Inspector.