Event Notification Report for December 17, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/16/2020 - 12/17/2020
EVENT NUMBERS
55040
55040
Power Reactor
Event Number: 55040
Facility: Harris
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: Paul Houseworth
HQ OPS Officer: Howie Crouch
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: Paul Houseworth
HQ OPS Officer: Howie Crouch
Notification Date: 12/17/2020
Notification Time: 22:03 [ET]
Event Date: 12/17/2020
Event Time: 15:39 [EST]
Last Update Date: 12/17/2020
Notification Time: 22:03 [ET]
Event Date: 12/17/2020
Event Time: 15:39 [EST]
Last Update Date: 12/17/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
MILLER, MARK (R2)
MILLER, MARK (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Power Operation | 0 | Power Operation |
ACCUMULATOR DISCHARGE VALVES ISOLATED WITH PLANT GREATER THAN 1000 PSIG
"On December 17, 2020 at 1539 EST, with Harris Nuclear Plant Unit 1 preparing for entry into Mode 4, the Reactor Coolant System was pressurized greater than 1000 psig for approximately 15 minutes with all three Cold Leg Injection Accumulator Discharge Valves closed. This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). Both Low Head and High Head Safety Injection Systems were operable at this time.
"This condition does not affect the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
"On December 17, 2020 at 1539 EST, with Harris Nuclear Plant Unit 1 preparing for entry into Mode 4, the Reactor Coolant System was pressurized greater than 1000 psig for approximately 15 minutes with all three Cold Leg Injection Accumulator Discharge Valves closed. This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). Both Low Head and High Head Safety Injection Systems were operable at this time.
"This condition does not affect the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."