Event Notification Report for February 19, 2019
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/18/2019 - 02/19/2019
EVENT NUMBERS
53883
Power Reactor
Event Number: 53883
Facility: FERMI
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: JEFF MYERS
HQ OPS Officer: JOANNA BRIDGE
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: JEFF MYERS
HQ OPS Officer: JOANNA BRIDGE
Notification Date: 02/19/2019
Notification Time: 15:19 [ET]
Event Date: 02/19/2019
Event Time: 12:53 [EST]
Last Update Date: 02/19/2019
Notification Time: 15:19 [ET]
Event Date: 02/19/2019
Event Time: 12:53 [EST]
Last Update Date: 02/19/2019
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):
ERIC DUNCAN (R3DO)
ERIC DUNCAN (R3DO)
| 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
"On February 19, 2019, at 1307 EST, with the reactor at 100 percent Core Thermal Power and steady state conditions, plant personnel notified the Main Control Room that both doors in the Secondary Containment Airlock on the Reactor Building Fifth Floor were opened simultaneously for a period of approximately five minutes (i.e., from 1253 to 1258 EST). The failure of this interlock, which is intended to prevent both doors from being opened simultaneously, resulted in the Technical Specification (TS) Surveillance Requirement (SR) 3.6.4.1.3 not being met. The maximum Secondary Containment pressure observed during that time remained within TS limits. There were no radiological releases associated with this event.
"Declaring Secondary Containment inoperable as a result of not meeting TS SR 3.6.4.1.3 is reportable under 10 CFR 50.72(b)(3)(v)(C) as an event or condition that could have prevented the fulfillment of a safety function needed to control the release of radioactive material.
"The licensee has notified the NRC Resident Inspector."
The repair to the failed interlock is in progress. As a compensatory measure signs are posted on the doors to notify personnel to not access the Reactor Building via those doors.
"On February 19, 2019, at 1307 EST, with the reactor at 100 percent Core Thermal Power and steady state conditions, plant personnel notified the Main Control Room that both doors in the Secondary Containment Airlock on the Reactor Building Fifth Floor were opened simultaneously for a period of approximately five minutes (i.e., from 1253 to 1258 EST). The failure of this interlock, which is intended to prevent both doors from being opened simultaneously, resulted in the Technical Specification (TS) Surveillance Requirement (SR) 3.6.4.1.3 not being met. The maximum Secondary Containment pressure observed during that time remained within TS limits. There were no radiological releases associated with this event.
"Declaring Secondary Containment inoperable as a result of not meeting TS SR 3.6.4.1.3 is reportable under 10 CFR 50.72(b)(3)(v)(C) as an event or condition that could have prevented the fulfillment of a safety function needed to control the release of radioactive material.
"The licensee has notified the NRC Resident Inspector."
The repair to the failed interlock is in progress. As a compensatory measure signs are posted on the doors to notify personnel to not access the Reactor Building via those doors.