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Event Notification Report for September 30, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/29/2024 - 09/30/2024
Agreement State
Event Number: 57355
Rep Org: California Radiation Control Prgm
Licensee: Leighton and Associates
Region: 4
City: Long Beach State: CA
County:
License #: 3109-30
Agreement: Y
Docket:
NRC Notified By: Robert Greger
HQ OPS Officer: Ian Howard
Licensee: Leighton and Associates
Region: 4
City: Long Beach State: CA
County:
License #: 3109-30
Agreement: Y
Docket:
NRC Notified By: Robert Greger
HQ OPS Officer: Ian Howard
Notification Date: 09/30/2024
Notification Time: 20:01 [ET]
Event Date: 09/30/2024
Event Time: 00:00 [PDT]
Last Update Date: 09/30/2024
Notification Time: 20:01 [ET]
Event Date: 09/30/2024
Event Time: 00:00 [PDT]
Last Update Date: 09/30/2024
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Gepford, Heather (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Gepford, Heather (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - FOUND GAUGE
The following information was provided by the California Radiologic Health Branch (RHB) via email:
"RHB was notified on 9/30/24 that Los Angeles (LA) County Radiation Management recovered an InstroTek CPN MC-1 Elite number 31069 (containing nominally 50 mCi Am-241/Be and 10 mCi Cs-137 sources) from an apartment complex in Long Beach, CA. Long Beach Fire and Police Department responded to a call from the apartment complex management that the transportation box was left in their parking garage for approximately a week. An LA County health physicist verified that the box did contain a moisture density gauge, which is owned by Leighton and Associates according to transportation paperwork found inside the unlocked transportation case. The Cs-137 source rod was locked in the shielded location. The gauge was removed from the property and secured in a storage locker.
"RHB contacted the company radiation safety officer, who was unaware that the gauge was missing. Follow-up investigation is in process to determine how and when the gauge went missing and why the licensee was unaware that it was missing."
California 5010 Number: 093024
The following information was provided by the California Radiologic Health Branch (RHB) via email:
"RHB was notified on 9/30/24 that Los Angeles (LA) County Radiation Management recovered an InstroTek CPN MC-1 Elite number 31069 (containing nominally 50 mCi Am-241/Be and 10 mCi Cs-137 sources) from an apartment complex in Long Beach, CA. Long Beach Fire and Police Department responded to a call from the apartment complex management that the transportation box was left in their parking garage for approximately a week. An LA County health physicist verified that the box did contain a moisture density gauge, which is owned by Leighton and Associates according to transportation paperwork found inside the unlocked transportation case. The Cs-137 source rod was locked in the shielded location. The gauge was removed from the property and secured in a storage locker.
"RHB contacted the company radiation safety officer, who was unaware that the gauge was missing. Follow-up investigation is in process to determine how and when the gauge went missing and why the licensee was unaware that it was missing."
California 5010 Number: 093024
Power Reactor
Event Number: 57353
Facility: Prairie Island
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: Timothy Thomas
HQ OPS Officer: Brian P. Smith
Region: 3 State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: Timothy Thomas
HQ OPS Officer: Brian P. Smith
Notification Date: 09/30/2024
Notification Time: 16:37 [ET]
Event Date: 09/30/2024
Event Time: 13:40 [CDT]
Last Update Date: 09/30/2024
Notification Time: 16:37 [ET]
Event Date: 09/30/2024
Event Time: 13:40 [CDT]
Last Update Date: 09/30/2024
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
Havertape, Joshua (R3DO)
Havertape, Joshua (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Defueled | 0 | Defueled |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION
The following information was provided by the licensee via phone and email:
"At 1340 CDT on 9/30/2024, Prairie Island Nuclear Generating Plant was informed that the Minnesota State Duty Officer and the Environmental National Response Center had been notified of a coolant leak from a diesel driven cooling pump expansion tank that had reached the waters of the state. The estimated quantity is 0.7 gallons of NALCO LCS-60. The leak has been isolated."
The NRC Resident Inspector has been notified.
The following information was provided by the licensee via phone and email:
"At 1340 CDT on 9/30/2024, Prairie Island Nuclear Generating Plant was informed that the Minnesota State Duty Officer and the Environmental National Response Center had been notified of a coolant leak from a diesel driven cooling pump expansion tank that had reached the waters of the state. The estimated quantity is 0.7 gallons of NALCO LCS-60. The leak has been isolated."
The NRC Resident Inspector has been notified.