Event Notification Report for April 23, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/22/2025 - 04/23/2025
Independent Spent Fuel Storage Installation
Event Number: 57678
Rep Org: San Onofre
Licensee: Southern California Edison Company
Region: 4
City: San Clemente State: CA
County: San Diego
License #: GL
Agreement: Y
Docket: 72-41
NRC Notified By: Robert Doeing
HQ OPS Officer: Josue Ramirez
Licensee: Southern California Edison Company
Region: 4
City: San Clemente State: CA
County: San Diego
License #: GL
Agreement: Y
Docket: 72-41
NRC Notified By: Robert Doeing
HQ OPS Officer: Josue Ramirez
Notification Date: 04/23/2025
Notification Time: 21:07 [ET]
Event Date: 04/23/2025
Event Time: 15:54 [PDT]
Last Update Date: 04/23/2025
Notification Time: 21:07 [ET]
Event Date: 04/23/2025
Event Time: 15:54 [PDT]
Last Update Date: 04/23/2025
Emergency Class: Non Emergency
10 CFR Section:
72.75(b)(2) - Press Release/Offsite Notification
10 CFR Section:
72.75(b)(2) - Press Release/Offsite Notification
Person (Organization):
Rollins, Jesse (R4DO)
NMSS_Events_Notification, (EMAIL)
Rollins, Jesse (R4DO)
NMSS_Events_Notification, (EMAIL)
EN Revision Imported Date: 4/24/2025
EN Revision Text: OFFSITE NOTIFICATION
The following is a summary of information provided by San Onofre Nuclear Generating Station (SONGS) via phone and email:
At 1554 PDT on 4/23/25, SONGS was notified of mineral oil spills that occurred in two separate locations from one transformer being delivered to SONGS. A total of 10-25 gallons of oil leaked. One leak location was on site and has been cleaned up. The second location was on state park property and has been isolated with absorbent material put down. A remediation company will remove the affected soil from the second location. The transformer has been drained and removed from the site. This report is being submitted due to offsite notifications to the San Diego Department of Environmental Health and the California Office of Emergency Services.
The NRC regional office has been notified.
EN Revision Text: OFFSITE NOTIFICATION
The following is a summary of information provided by San Onofre Nuclear Generating Station (SONGS) via phone and email:
At 1554 PDT on 4/23/25, SONGS was notified of mineral oil spills that occurred in two separate locations from one transformer being delivered to SONGS. A total of 10-25 gallons of oil leaked. One leak location was on site and has been cleaned up. The second location was on state park property and has been isolated with absorbent material put down. A remediation company will remove the affected soil from the second location. The transformer has been drained and removed from the site. This report is being submitted due to offsite notifications to the San Diego Department of Environmental Health and the California Office of Emergency Services.
The NRC regional office has been notified.
Agreement State
Event Number: 57679
Rep Org: Maryland Dept of the Environment
Licensee: AB Consultants, Inc.
Region: 1
City: Upper Marlboro State: MD
County: Prince George's
License #: MD-33-161-01
Agreement: Y
Docket:
NRC Notified By: Krishnakumar D. Nangeelil
HQ OPS Officer: Josue Ramirez
Licensee: AB Consultants, Inc.
Region: 1
City: Upper Marlboro State: MD
County: Prince George's
License #: MD-33-161-01
Agreement: Y
Docket:
NRC Notified By: Krishnakumar D. Nangeelil
HQ OPS Officer: Josue Ramirez
Notification Date: 04/24/2025
Notification Time: 11:29 [ET]
Event Date: 04/23/2025
Event Time: 12:40 [EDT]
Last Update Date: 04/24/2025
Notification Time: 11:29 [ET]
Event Date: 04/23/2025
Event Time: 12:40 [EDT]
Last Update Date: 04/24/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Ford, Monica (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Ford, Monica (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE
The following information was provided by the Maryland Department of the Environment (MDE) via email:
"On April 23, 2025, at 1240 EDT, the radiation safety officer of AB Consultants, Inc. reported an incident to the MDE involving damage to a portable nuclear gauge Troxler model 3440 (serial number 78275, 8 mCi Cs-137 and 40 mCi Am-241/Be sources). The incident took place at a road construction site near the Upper Marlboro area. The gauge was not in use at the time of the incident and the technician was present near the gauge. A multipurpose compactor, operated via radio remote control, accidentally struck the plastic housing of the gauge causing visible damage. According to the gauge technician, the compactor lost control during the remote operation, resulting in an unintended collision with the gauge.
"No personal injuries were reported. The area was immediately secured, and emergency personnel, including firefighters, responded to the scene. MDE staff arrived thereafter, conducted a site survey, interviewed personnel, and inspected the damaged gauge. The radioactive sources within the device were confirmed to be intact. As a precaution, the gauge was safely packaged and transported to North East Technical Services Inc. (NETS) for leak testing and further evaluation. Decisions regarding repair or disposal will be based on NETS' findings. A follow-up radiation survey of the area was conducted after the gauge's removal, and no radiation levels above background were detected.
"MDE has requested that the licensee submit documentation of the leak test results, calibration details of the gauge and provide transfer and/or disposal certificates upon completion of the evaluation by NETS. MDE radiological health program will follow up this reactive investigation until the device is repaired or disposed of."
The following information was provided by the Maryland Department of the Environment (MDE) via email:
"On April 23, 2025, at 1240 EDT, the radiation safety officer of AB Consultants, Inc. reported an incident to the MDE involving damage to a portable nuclear gauge Troxler model 3440 (serial number 78275, 8 mCi Cs-137 and 40 mCi Am-241/Be sources). The incident took place at a road construction site near the Upper Marlboro area. The gauge was not in use at the time of the incident and the technician was present near the gauge. A multipurpose compactor, operated via radio remote control, accidentally struck the plastic housing of the gauge causing visible damage. According to the gauge technician, the compactor lost control during the remote operation, resulting in an unintended collision with the gauge.
"No personal injuries were reported. The area was immediately secured, and emergency personnel, including firefighters, responded to the scene. MDE staff arrived thereafter, conducted a site survey, interviewed personnel, and inspected the damaged gauge. The radioactive sources within the device were confirmed to be intact. As a precaution, the gauge was safely packaged and transported to North East Technical Services Inc. (NETS) for leak testing and further evaluation. Decisions regarding repair or disposal will be based on NETS' findings. A follow-up radiation survey of the area was conducted after the gauge's removal, and no radiation levels above background were detected.
"MDE has requested that the licensee submit documentation of the leak test results, calibration details of the gauge and provide transfer and/or disposal certificates upon completion of the evaluation by NETS. MDE radiological health program will follow up this reactive investigation until the device is repaired or disposed of."