Event Notification Report for July 02, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/01/2025 - 07/02/2025
Agreement State
Event Number: 57799
Rep Org: Minnesota Department of Health
Licensee: IRISNDT, Inc.
Region: 3
City: St. Paul Park State: MN
County:
License #: 1238
Agreement: Y
Docket:
NRC Notified By: Tyler Benner
HQ OPS Officer: Tenisha Meadows
Licensee: IRISNDT, Inc.
Region: 3
City: St. Paul Park State: MN
County:
License #: 1238
Agreement: Y
Docket:
NRC Notified By: Tyler Benner
HQ OPS Officer: Tenisha Meadows
Notification Date: 07/03/2025
Notification Time: 13:51 [ET]
Event Date: 07/02/2025
Event Time: 11:30 [CDT]
Last Update Date: 07/03/2025
Notification Time: 13:51 [ET]
Event Date: 07/02/2025
Event Time: 11:30 [CDT]
Last Update Date: 07/03/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Havertape, Joshua (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Havertape, Joshua (R3DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - UNABLE TO RETRACT SOURCE
The following information was received from the Minnesota Department of Health (MDH), Radioactive Materials Unit via email:
"On July 2, 2025, MDH received an email stating that on July 2, 2025, at 1130 [CDT] the licensee had a source retrieval [issue] of a 35.64 Ci Ir-192 source in a SPEC 150 camera. The licensee's radiation safety officer (RSO) was notified that a radiographer was unable to retract the source to its fully shielded position during radiographic operations. The radiographer's assistant cranked the source out and realized that he had gone too far and notified the radiographer. The radiographer investigated the situation and observed the source was spooled on the ground. The radiographer alerted the RSO. The RSO informed all radiation workers to establish a 2 mR/hr boundary. The RSO and a staff member, who is trained in source retrieval, were able to crank the source back into its fully shielded position at 1203 [CDT]. The radiographer received 144.9 mrem whole body. The RSO calculated the radiographer received 526.27 mrem to the feet. The RSO received 4.5 mrem and the source retrieval staff received 0.3 mrem. MDH plans on conducting an investigation next week."
Minnesota Event Report ID: MN250003
The following information was received from the Minnesota Department of Health (MDH), Radioactive Materials Unit via email:
"On July 2, 2025, MDH received an email stating that on July 2, 2025, at 1130 [CDT] the licensee had a source retrieval [issue] of a 35.64 Ci Ir-192 source in a SPEC 150 camera. The licensee's radiation safety officer (RSO) was notified that a radiographer was unable to retract the source to its fully shielded position during radiographic operations. The radiographer's assistant cranked the source out and realized that he had gone too far and notified the radiographer. The radiographer investigated the situation and observed the source was spooled on the ground. The radiographer alerted the RSO. The RSO informed all radiation workers to establish a 2 mR/hr boundary. The RSO and a staff member, who is trained in source retrieval, were able to crank the source back into its fully shielded position at 1203 [CDT]. The radiographer received 144.9 mrem whole body. The RSO calculated the radiographer received 526.27 mrem to the feet. The RSO received 4.5 mrem and the source retrieval staff received 0.3 mrem. MDH plans on conducting an investigation next week."
Minnesota Event Report ID: MN250003
Power Reactor
Event Number: 57794
Facility: Calvert Cliffs
Region: 1 State: MD
Unit: [2] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: Hummer, Kerry
HQ OPS Officer: Brian P. Smith
Region: 1 State: MD
Unit: [2] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: Hummer, Kerry
HQ OPS Officer: Brian P. Smith
Notification Date: 07/02/2025
Notification Time: 12:11 [ET]
Event Date: 07/02/2025
Event Time: 08:42 [EDT]
Last Update Date: 07/02/2025
Notification Time: 12:11 [ET]
Event Date: 07/02/2025
Event Time: 08:42 [EDT]
Last Update Date: 07/02/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
10 CFR Section:
50.72(b)(3)(iv)(A) - Valid Specif Sys Actuation
Person (Organization):
Carfang, Erin (R1DO)
Carfang, Erin (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
AUTOMATIC ACTUATION OF ENGINEERED SAFETY FEATURES ACTUATION SYSTEM
The following information was provided by the licensee via phone and email:
"At 0842 EDT on 7/2/25 with Unit 2 in mode 1 at 100 percent reactor power, an actuation of the emergency safety features actuation system (ESFAS) undervoltage (UV) occurred on the safety related 4kV bus '21' during steady state conditions. The cause of the UV actuation was the loss of the 13/4 kV transformer 'U-4000-12' due to its feeder breaker tripping open. The '2A' emergency diesel generator automatically started as designed when the UV signal was received and re-powered 4kV bus '21'.
"This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the ESFAS.
"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:
"At 0842 EDT on 7/2/25 with Unit 2 in mode 1 at 100 percent reactor power, an actuation of the emergency safety features actuation system (ESFAS) undervoltage (UV) occurred on the safety related 4kV bus '21' during steady state conditions. The cause of the UV actuation was the loss of the 13/4 kV transformer 'U-4000-12' due to its feeder breaker tripping open. The '2A' emergency diesel generator automatically started as designed when the UV signal was received and re-powered 4kV bus '21'.
"This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the ESFAS.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Power Reactor
Event Number: 57800
Facility: Farley
Region: 2 State: AL
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: Aaron Shelley
HQ OPS Officer: Tenisha Meadows
Region: 2 State: AL
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: Aaron Shelley
HQ OPS Officer: Tenisha Meadows
Notification Date: 07/03/2025
Notification Time: 17:27 [ET]
Event Date: 07/02/2025
Event Time: 19:22 [CDT]
Last Update Date: 07/17/2025
Notification Time: 17:27 [ET]
Event Date: 07/02/2025
Event Time: 19:22 [CDT]
Last Update Date: 07/17/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(xiii) - Loss Comm/Asmt/Response
10 CFR Section:
50.72(b)(3)(xiii) - Loss Comm/Asmt/Response
Person (Organization):
Blamey, Alan (R2DO)
Blamey, Alan (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
EN Revision Imported Date: 7/18/2025
EN Revision Text: LOSS OF SEISMIC MONITORING FOR EMERGENCY PLAN ASSESSMENT
The following information was provided by the licensee via phone and email:
"At 1922 CDT on 07/02/2025, the Farley Unit 1 and Unit 2 seismic monitoring panel experienced a fault, rendering the panel nonfunctional.
"Compensatory measures for seismic event classification have been implemented in accordance with Farley procedures.
"This report is being submitted as an eight-hour, non-emergency notification for a loss of emergency assessment capability. This event is reportable in accordance with 10 CFR 50.72(b)(3)(xiii) because the seismic monitoring panel is the method for evaluating if an operational basis earthquake (OBE) threshold has been exceeded following a seismic event. This is in accordance with the initiating condition for a seismic event greater than OBE levels and emergency action level HU2. There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector has been notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee confirmed alternative means of recognizing a seismic event for emergency plan entry are available.
* * * UPDATE ON 07/17/2025 AT 1420 EDT FROM DANIEL HERSHMAN TO JOSUE RAMIREZ * * *
The following information was provided by the licensee via phone and email:
"It was determined through event investigation that two additional unplanned events occurred within a 3-year period. The seismic computer experienced an unplanned event on 9/29/24 at 1306 CDT and was restored on 9/30/24 at 1742. The other unplanned event occurred on 3/19/25 at 1120 and was restored to service on 3/24/25 at 1626.
"The NRC Resident Inspector has been notified."
Notified R2DO (Davis)
EN Revision Text: LOSS OF SEISMIC MONITORING FOR EMERGENCY PLAN ASSESSMENT
The following information was provided by the licensee via phone and email:
"At 1922 CDT on 07/02/2025, the Farley Unit 1 and Unit 2 seismic monitoring panel experienced a fault, rendering the panel nonfunctional.
"Compensatory measures for seismic event classification have been implemented in accordance with Farley procedures.
"This report is being submitted as an eight-hour, non-emergency notification for a loss of emergency assessment capability. This event is reportable in accordance with 10 CFR 50.72(b)(3)(xiii) because the seismic monitoring panel is the method for evaluating if an operational basis earthquake (OBE) threshold has been exceeded following a seismic event. This is in accordance with the initiating condition for a seismic event greater than OBE levels and emergency action level HU2. There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector has been notified."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee confirmed alternative means of recognizing a seismic event for emergency plan entry are available.
* * * UPDATE ON 07/17/2025 AT 1420 EDT FROM DANIEL HERSHMAN TO JOSUE RAMIREZ * * *
The following information was provided by the licensee via phone and email:
"It was determined through event investigation that two additional unplanned events occurred within a 3-year period. The seismic computer experienced an unplanned event on 9/29/24 at 1306 CDT and was restored on 9/30/24 at 1742. The other unplanned event occurred on 3/19/25 at 1120 and was restored to service on 3/24/25 at 1626.
"The NRC Resident Inspector has been notified."
Notified R2DO (Davis)