Event Notification Report for November 18, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/17/2025 - 11/18/2025
Agreement State
Event Number: 58034
Rep Org: Colorado Dept of Health
Licensee: Deck Superstore
Region: 4
City: Commerce City State: CO
County:
License #: GL002143
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Adam Koziol
Licensee: Deck Superstore
Region: 4
City: Commerce City State: CO
County:
License #: GL002143
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Adam Koziol
Notification Date: 11/10/2025
Notification Time: 17:47 [ET]
Event Date: 11/05/2025
Event Time: 00:00 [MST]
Last Update Date: 11/10/2025
Notification Time: 17:47 [ET]
Event Date: 11/05/2025
Event Time: 00:00 [MST]
Last Update Date: 11/10/2025
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 two exit signs, each containing 6.0 Ci of tritium, were lost in Commerce City, Colorado.
Manufacturer: Isolite Corporation
Model Number: SLX60
Colorado Event Number: CO250042
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 two exit signs, each containing 6.0 Ci of tritium, were lost in Commerce City, Colorado.
Manufacturer: Isolite Corporation
Model Number: SLX60
Colorado Event Number: CO250042
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: 58042
Facility: Sequoyah
Region: 2 State: TN
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Brian Jaros
HQ OPS Officer: Sam Colvard
Region: 2 State: TN
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: Brian Jaros
HQ OPS Officer: Sam Colvard
Notification Date: 11/17/2025
Notification Time: 16:05 [ET]
Event Date: 11/17/2025
Event Time: 09:11 [EST]
Last Update Date: 11/17/2025
Notification Time: 16:05 [ET]
Event Date: 11/17/2025
Event Time: 09:11 [EST]
Last Update Date: 11/17/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
Mckown, Louis J (R2DO)
Mckown, Louis J (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 0 | 0 | ||
| 2 | N | Y | 100 | 100 |
CONTROL ROOM EMERGENCY VENTILATION SYSTEM INOPERABLE
The following information was provided by the licensee via phone and email:
"At 0911 EST, on 11/17/2025, it was discovered that both trains of the control room emergency ventilation system were simultaneously inoperable due to an unauthorized door breach of a door in the control room envelope; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). At 0913 EST, the door was closed, and both trains of the control room emergency ventilation system were restored to operable.
"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 0911 EST, on 11/17/2025, it was discovered that both trains of the control room emergency ventilation system were simultaneously inoperable due to an unauthorized door breach of a door in the control room envelope; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). At 0913 EST, the door was closed, and both trains of the control room emergency ventilation system were restored to operable.
"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: 58043
Facility: Dresden
Region: 3 State: IL
Unit: [2] [] []
RX Type: [2] GE-3,[3] GE-3
NRC Notified By: Bora Tuncer
HQ OPS Officer: Robert A. Thompson
Region: 3 State: IL
Unit: [2] [] []
RX Type: [2] GE-3,[3] GE-3
NRC Notified By: Bora Tuncer
HQ OPS Officer: Robert A. Thompson
Notification Date: 11/18/2025
Notification Time: 00:28 [ET]
Event Date: 11/17/2025
Event Time: 16:13 [CST]
Last Update Date: 11/18/2025
Notification Time: 00:28 [ET]
Event Date: 11/17/2025
Event Time: 16:13 [CST]
Last Update Date: 11/18/2025
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
Orlikowski, Robert (R3DO)
Orlikowski, Robert (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 2 | 2 |
HPCI INOPERABLE
The following information was provided by the licensee via phone and email:
"At 1613 CST on November 17, 2025, it was discovered that the single train of high pressure coolant injection (HPCI) was inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The isolation condenser was operable during this time period.
"There was no impact to 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:
A fuse in the turbine stop valve circuit blew during initial system testing for unit startup.
The following information was provided by the licensee via phone and email:
"At 1613 CST on November 17, 2025, it was discovered that the single train of high pressure coolant injection (HPCI) was inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The isolation condenser was operable during this time period.
"There was no impact to 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:
A fuse in the turbine stop valve circuit blew during initial system testing for unit startup.
Power Reactor
Event Number: 58046
Facility: Palisades
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: Paul Rhodes
HQ OPS Officer: Jordan Wingate
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: Paul Rhodes
HQ OPS Officer: Jordan Wingate
Notification Date: 11/18/2025
Notification Time: 16:33 [ET]
Event Date: 11/18/2025
Event Time: 09:48 [EST]
Last Update Date: 11/18/2025
Notification Time: 16:33 [ET]
Event Date: 11/18/2025
Event Time: 09:48 [EST]
Last Update Date: 11/18/2025
Emergency Class: Non Emergency
10 CFR Section:
26.719 - Fitness For Duty
10 CFR Section:
26.719 - Fitness For Duty
Person (Organization):
Orlikowski, Robert (R3DO)
FFD Group, (EMAIL)
Orlikowski, Robert (R3DO)
FFD Group, (EMAIL)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | 0 |
FITNESS FOR DUTY VIOLATION
The following information was provided by the licensee via phone and email:
"On November 18, 2025, [non-licensed] supervisor violated the station's fitness for duty (FFD) policy. The employee's unescorted access to Palisades Nuclear Plant has been terminated. The event was determined to be reportable under 10CFR26.719(b)(2)(ii).
"The NRC Resident Inspector has been notified."
The following information was provided by the licensee via phone and email:
"On November 18, 2025, [non-licensed] supervisor violated the station's fitness for duty (FFD) policy. The employee's unescorted access to Palisades Nuclear Plant has been terminated. The event was determined to be reportable under 10CFR26.719(b)(2)(ii).
"The NRC Resident Inspector has been notified."