Event Notification Report for October 22, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
10/21/2025 - 10/22/2025
Agreement State
Event Number: 58004
Rep Org: Florida Bureau of Radiation Control
Licensee: CTI, Construction Testing and Inspections
Region: 1
City: Sunrise State: FL
County:
License #: 3298-3
Agreement: Y
Docket:
NRC Notified By: Monroe Cooper
HQ OPS Officer: Robert A. Thompson
Licensee: CTI, Construction Testing and Inspections
Region: 1
City: Sunrise State: FL
County:
License #: 3298-3
Agreement: Y
Docket:
NRC Notified By: Monroe Cooper
HQ OPS Officer: Robert A. Thompson
Notification Date: 10/23/2025
Notification Time: 11:29 [ET]
Event Date: 10/23/2025
Event Time: 10:44 [EDT]
Last Update Date: 10/23/2025
Notification Time: 11:29 [ET]
Event Date: 10/23/2025
Event Time: 10:44 [EDT]
Last Update Date: 10/23/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Young, Matt (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Young, Matt (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE
The following information was provided by the Florida Bureau of Radiation Control (BRC) via email:
"BRC received notification that a Troxler gauge, model 3430 (8 mCi Cs-137, 40 mCi Am-241-Be), was impacted by a bobcat construction vehicle. The yellow case of the gauge is significantly damaged, but the licensee states the source rod was successfully retracted. The area has been roped off with a 20 foot radius. An inspector has been assigned for immediate response."
Florida incident number: FL25-103
The following information was provided by the Florida Bureau of Radiation Control (BRC) via email:
"BRC received notification that a Troxler gauge, model 3430 (8 mCi Cs-137, 40 mCi Am-241-Be), was impacted by a bobcat construction vehicle. The yellow case of the gauge is significantly damaged, but the licensee states the source rod was successfully retracted. The area has been roped off with a 20 foot radius. An inspector has been assigned for immediate response."
Florida incident number: FL25-103
Agreement State
Event Number: 58023
Rep Org: Colorado Dept of Health
Licensee: Denver Housing Authority
Region: 4
City: Denver State: CO
County:
License #: GL002607
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Ernest West
Licensee: Denver Housing Authority
Region: 4
City: Denver State: CO
County:
License #: GL002607
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Ernest West
Notification Date: 11/04/2025
Notification Time: 16:54 [ET]
Event Date: 10/23/2025
Event Time: 00:00 [MST]
Last Update Date: 11/04/2025
Notification Time: 16:54 [ET]
Event Date: 10/23/2025
Event Time: 00:00 [MST]
Last Update Date: 11/04/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Vossmar, Patricia (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Vossmar, Patricia (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - LOST EXIT SIGNS
The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:
The licensee reported that three exit signs, containing a total of 52.53 Ci of tritium, were lost in Denver, Colorado.
Manufacturer: SRB Technologies
Model number: BX-20-WH
Event report ID number: CO250039
THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:
The licensee reported that three exit signs, containing a total of 52.53 Ci of tritium, were lost in Denver, Colorado.
Manufacturer: SRB Technologies
Model number: BX-20-WH
Event report ID number: CO250039
THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
Agreement State
Event Number: 58001
Rep Org: Colorado Dept of Health
Licensee: Terracina Apartments
Region: 4
City: Broomfield State: CO
County:
License #: GL001823
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Josue Ramirez
Licensee: Terracina Apartments
Region: 4
City: Broomfield State: CO
County:
License #: GL001823
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Josue Ramirez
Notification Date: 10/22/2025
Notification Time: 18:38 [ET]
Event Date: 10/22/2025
Event Time: 00:00 [MDT]
Last Update Date: 10/22/2025
Notification Time: 18:38 [ET]
Event Date: 10/22/2025
Event Time: 00:00 [MDT]
Last Update Date: 10/22/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Vossmar, Patricia (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL)
Vossmar, Patricia (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL)
AGREEMENT STATE REPORT - LOST EXIT SIGNS
The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:
The licensee reported that three exit signs, each containing 7.03 Ci of tritium, were lost in Broomfield, Colorado.
Manufacturer: Best Lighting Products Inc
Model number: SLXTU1BB10
Isotope: H-3
Activity: 21.09 Ci (total)
Event report ID number: CO250032
THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:
The licensee reported that three exit signs, each containing 7.03 Ci of tritium, were lost in Broomfield, Colorado.
Manufacturer: Best Lighting Products Inc
Model number: SLXTU1BB10
Isotope: H-3
Activity: 21.09 Ci (total)
Event report ID number: CO250032
THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
Power Reactor
Event Number: 57998
Facility: Palisades
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: Scott Moore
HQ OPS Officer: Robert A. Thompson
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: Scott Moore
HQ OPS Officer: Robert A. Thompson
Notification Date: 10/22/2025
Notification Time: 08:06 [ET]
Event Date: 10/22/2025
Event Time: 04:52 [EDT]
Last Update Date: 10/22/2025
Notification Time: 08:06 [ET]
Event Date: 10/22/2025
Event Time: 04:52 [EDT]
Last Update Date: 10/22/2025
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):
Edwards, Rhex (R3DO)
Edwards, Rhex (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Defueled | 0 | Defueled |
OFFSITE NOTIFICATION
The following information was provided by the licensee via phone and email:
"On October 22, 2025, at 0452 EDT, chemistry determined that a report to the State of Michigan, Department of Environment, Great Lakes, and Energy, would be required based on exceeding the National Pollutant Discharge Elimination System permit limit for hydrazine. This exceedance did not exceed any NRC regulations or reporting criteria. This notification is being made solely as a four-hour, non-emergency notification for a notification to another government agency. This event is a 4-hour non-emergency report in accordance with 10 CFR 50.72(b)(2)(xi). There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector will be notified."
The following information was provided by the licensee via phone and email:
"On October 22, 2025, at 0452 EDT, chemistry determined that a report to the State of Michigan, Department of Environment, Great Lakes, and Energy, would be required based on exceeding the National Pollutant Discharge Elimination System permit limit for hydrazine. This exceedance did not exceed any NRC regulations or reporting criteria. This notification is being made solely as a four-hour, non-emergency notification for a notification to another government agency. This event is a 4-hour non-emergency report in accordance with 10 CFR 50.72(b)(2)(xi). There was no impact on the health and safety of the public or plant personnel.
"The NRC Resident Inspector will be notified."
Power Reactor
Event Number: 58002
Facility: Clinton
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Pat Bulpitt
HQ OPS Officer: Josue Ramirez
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Pat Bulpitt
HQ OPS Officer: Josue Ramirez
Notification Date: 10/22/2025
Notification Time: 18:57 [ET]
Event Date: 10/22/2025
Event Time: 15:35 [CDT]
Last Update Date: 10/22/2025
Notification Time: 18:57 [ET]
Event Date: 10/22/2025
Event Time: 15:35 [CDT]
Last Update Date: 10/22/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS Actuation - Critical
Person (Organization):
Edwards, Rhex (R3DO)
Edwards, Rhex (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 86 | Power Operation | 0 | Hot Shutdown |
MANUAL REACTOR SCRAM
The following information was provided by the licensee via phone and email:
"At 1535 CDT on 10/22/2025, with Unit 1 in mode 1 at 86 percent power, the reactor was manually tripped due to low turbine electro-hydraulic control (EHC) oil system reservoir level, caused by a leak developing in the heater bay. The trip was not complex, with all systems responding normally post-trip. Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B).
"Operations responded using the emergency operating procedure for reactor pressure vessel control and stabilized the plant in mode 3. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves, which have a separate EHC oil system.
"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 1535 CDT on 10/22/2025, with Unit 1 in mode 1 at 86 percent power, the reactor was manually tripped due to low turbine electro-hydraulic control (EHC) oil system reservoir level, caused by a leak developing in the heater bay. The trip was not complex, with all systems responding normally post-trip. Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B).
"Operations responded using the emergency operating procedure for reactor pressure vessel control and stabilized the plant in mode 3. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves, which have a separate EHC oil system.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."