Event Notification Report for March 26, 2026
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Event Text
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/25/2026 - 03/26/2026
EVENT NUMBERS
58215
58215
Power Reactor
Event Number: 58215
Facility: McGuire
Region: 2 State: NC
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Christopher Rich
HQ OPS Officer: Ernest West
Region: 2 State: NC
Unit: [2] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Christopher Rich
HQ OPS Officer: Ernest West
Notification Date: 03/24/2026
Notification Time: 22:30 [ET]
Event Date: 03/24/2026
Event Time: 17:47 [EDT]
Last Update Date: 03/24/2026
Notification Time: 22:30 [ET]
Event Date: 03/24/2026
Event Time: 17:47 [EDT]
Last Update Date: 03/24/2026
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(ii)(A) - Degraded Condition
10 CFR Section:
50.72(b)(3)(ii)(A) - Degraded Condition
Person (Organization):
Smith, Steven (R2DO)
Smith, Steven (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Hot Shutdown | 0 | Cold Shutdown |
DEGRADED CONDITION
The following information was provided by the licensee via phone and email:
"On March 21, 2026, at approximately 0945 EDT, with Unit 2 in mode 4 during a planned refueling outage, personnel discovered boric acid on the mirror insulation on top of the `2B' reactor coolant system (RCS) crossover leg piping. On March 24, 2026, at 1747 EDT, it was identified to be a through-wall flaw on a three-quarter inch instrument line. The leakage is minor in nature and unquantifiable. The leakage is coming from a welded connection upstream of a low pressure flow transmitter root-valve connecting to the `2B' RCS crossover elbow.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
The following information was provided by the licensee via phone and email:
"On March 21, 2026, at approximately 0945 EDT, with Unit 2 in mode 4 during a planned refueling outage, personnel discovered boric acid on the mirror insulation on top of the `2B' reactor coolant system (RCS) crossover leg piping. On March 24, 2026, at 1747 EDT, it was identified to be a through-wall flaw on a three-quarter inch instrument line. The leakage is minor in nature and unquantifiable. The leakage is coming from a welded connection upstream of a low pressure flow transmitter root-valve connecting to the `2B' RCS crossover elbow.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Page Last Reviewed/Updated March 26, 2026, 05:17 am EDT