Event Notification Report for September 11, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/10/2020 - 09/11/2020
EVENT NUMBERS
54897
Power Reactor
Event Number: 54897
Facility: Palisades
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: Jamie Hansen
HQ OPS Officer: Andrew Waugh
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: Jamie Hansen
HQ OPS Officer: Andrew Waugh
Notification Date: 09/11/2020
Notification Time: 22:54 [ET]
Event Date: 09/11/2020
Event Time: 19:30 [EDT]
Last Update Date: 09/11/2020
Notification Time: 22:54 [ET]
Event Date: 09/11/2020
Event Time: 19:30 [EDT]
Last Update Date: 09/11/2020
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):
DAVID HILLS (R3DO)
DAVID HILLS (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
DEGRADED CONDITION
"At 1930 EDT, on September 11, 2020, Palisades Nuclear Plant was conducting ultrasonic data analysis from reactor vessel closure head in-service inspections. During this analysis, signals that display characteristics consistent with primary water stress corrosion cracking were identified in head penetration 34. No leak path signal was identified during ultrasonic testing.
"The plant was in cold shutdown at 0% power and in Mode 6 for a refueling outage at the time of discovery. Repair actions will be completed prior to plant startup from the outage.
"This condition has no impact to the health and safety of the public.
"This report is being made in accordance with 10 CFR 50.72(b)(3)(ii)(A) for degradation of a principal safety barrier. This is the only indication that is currently present, however, if additional indications are found, they will also be repaired prior to the plant startup.
"The licensee notified the NRC Senior Resident Inspector."
"At 1930 EDT, on September 11, 2020, Palisades Nuclear Plant was conducting ultrasonic data analysis from reactor vessel closure head in-service inspections. During this analysis, signals that display characteristics consistent with primary water stress corrosion cracking were identified in head penetration 34. No leak path signal was identified during ultrasonic testing.
"The plant was in cold shutdown at 0% power and in Mode 6 for a refueling outage at the time of discovery. Repair actions will be completed prior to plant startup from the outage.
"This condition has no impact to the health and safety of the public.
"This report is being made in accordance with 10 CFR 50.72(b)(3)(ii)(A) for degradation of a principal safety barrier. This is the only indication that is currently present, however, if additional indications are found, they will also be repaired prior to the plant startup.
"The licensee notified the NRC Senior Resident Inspector."