Event Notification Report for April 15, 2017
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/14/2017 - 04/15/2017
EVENT NUMBERS
52682
Power Reactor
Event Number: 52682
Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: DAMON HESSIG
HQ OPS Officer: HOWIE CROUCH
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: DAMON HESSIG
HQ OPS Officer: HOWIE CROUCH
Notification Date: 04/15/2017
Notification Time: 13:03 [ET]
Event Date: 04/15/2017
Event Time: 04:41 [CDT]
Last Update Date: 04/15/2017
Notification Time: 13:03 [ET]
Event Date: 04/15/2017
Event Time: 04:41 [CDT]
Last Update Date: 04/15/2017
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
MARK JEFFERS (R3DO)
MARK JEFFERS (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Hot Shutdown | 0 | Hot Shutdown |
VALID REACTOR PROTECTION SYSTEM AND PARTIAL PRIMARY CONTAINMENT ISOLATION SYSTEM ACTUATIONS ON LOW WATER LEVEL
"During shutdown activities with the reactor subcritical, actions were being taken to remove 11 Reactor Feed Pump from service in support of a scheduled refueling outage. Reactor Water Level on Safeguards level instrumentation dropped below +9 inches, which resulted in a valid Reactor Protection System (RPS) Scram signal and Partial Group 2 Primary Containment Isolation System (PCIS) signal. All systems functioned as required. Reactor Water Level on Safeguards instrumentation was restored to greater than +9 inches immediately. RPS and PCIS logic was reset. There was no impact to the health and safety of the public as a result of this event.
"This actuation of these systems is being reported per 10 CFR 50.72(b)(3)(iv)(A) as an event that resulted in a valid actuation of any of the systems listed in 10 CFR 50.72(b)(3)(iv)(B).
"The NRC Resident Inspector has been notified."
"During shutdown activities with the reactor subcritical, actions were being taken to remove 11 Reactor Feed Pump from service in support of a scheduled refueling outage. Reactor Water Level on Safeguards level instrumentation dropped below +9 inches, which resulted in a valid Reactor Protection System (RPS) Scram signal and Partial Group 2 Primary Containment Isolation System (PCIS) signal. All systems functioned as required. Reactor Water Level on Safeguards instrumentation was restored to greater than +9 inches immediately. RPS and PCIS logic was reset. There was no impact to the health and safety of the public as a result of this event.
"This actuation of these systems is being reported per 10 CFR 50.72(b)(3)(iv)(A) as an event that resulted in a valid actuation of any of the systems listed in 10 CFR 50.72(b)(3)(iv)(B).
"The NRC Resident Inspector has been notified."