Event Notification Report for April 09, 2016
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/08/2016 - 04/09/2016
EVENT NUMBERS
51860
Power Reactor
Event Number: 51860
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHAEL GAGNON
HQ OPS Officer: JOHN SHOEMAKER
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHAEL GAGNON
HQ OPS Officer: JOHN SHOEMAKER
Notification Date: 04/09/2016
Notification Time: 23:14 [ET]
Event Date: 04/09/2016
Event Time: 15:23 [EDT]
Last Update Date: 04/09/2016
Notification Time: 23:14 [ET]
Event Date: 04/09/2016
Event Time: 15:23 [EDT]
Last Update Date: 04/09/2016
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
JOHN ROGGE (R1DO)
JOHN ROGGE (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | Y | 52 | Power Operation | 20 | Power Operation |
SECONDARY CONTAINMENT DETERMINED TO BE INOPERABLE DURING SURVEILLANCE TESTING
"During pre-planned surveillance testing of the Supplementary Leak Collection and Release System (SLCRS), an issue was found affecting the Secondary Containment boundary. Millstone Unit 3 is being moved to Mode 5 for a refuel outage where investigation and repairs will be made. This is reportable under 10CFR50.72(b)(3)(v)(C), a condition that could have prevented the fulfillment of a safety function for systems or structures to control the release of radioactive material, and 10CFR50.72(b)(3)(v)(D) to mitigate the consequences of an accident."
The surveillance testing was being performed while Millstone 3 was being removed from service for an upcoming Refueling Outage.
The licensee has notified the NRC Resident Inspector and State and Local authorities.
"During pre-planned surveillance testing of the Supplementary Leak Collection and Release System (SLCRS), an issue was found affecting the Secondary Containment boundary. Millstone Unit 3 is being moved to Mode 5 for a refuel outage where investigation and repairs will be made. This is reportable under 10CFR50.72(b)(3)(v)(C), a condition that could have prevented the fulfillment of a safety function for systems or structures to control the release of radioactive material, and 10CFR50.72(b)(3)(v)(D) to mitigate the consequences of an accident."
The surveillance testing was being performed while Millstone 3 was being removed from service for an upcoming Refueling Outage.
The licensee has notified the NRC Resident Inspector and State and Local authorities.