Event Notification Report for September 12, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/11/2024 - 09/12/2024
Non-Agreement State
Event Number: 57331
Rep Org: Bridger Coal
Licensee: Bridger Coal
Region: 4
City: Point of Rocks State: WY
County:
License #: 49-21022-02
Agreement: Y
Docket:
NRC Notified By: Victor Louderback
HQ OPS Officer: Robert A. Thompson
Licensee: Bridger Coal
Region: 4
City: Point of Rocks State: WY
County:
License #: 49-21022-02
Agreement: Y
Docket:
NRC Notified By: Victor Louderback
HQ OPS Officer: Robert A. Thompson
Notification Date: 09/18/2024
Notification Time: 13:38 [ET]
Event Date: 09/12/2024
Event Time: 12:00 [MDT]
Last Update Date: 08/11/2025
Notification Time: 13:38 [ET]
Event Date: 09/12/2024
Event Time: 12:00 [MDT]
Last Update Date: 08/11/2025
Emergency Class: Non Emergency
10 CFR Section:
20.2201(a)(1)(i) - Lost/Stolen LNM>1000x
10 CFR Section:
20.2201(a)(1)(i) - Lost/Stolen LNM>1000x
Person (Organization):
Azua, Ray (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
Azua, Ray (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
EN Revision Imported Date: 8/12/2025
EN Revision Text: LOST TRITIUM EXIT SIGNS
The following information was provided by the licensee via phone and email:
"Two tritium exit signs cannot be located at Bridger Coal Mine in Point of Rocks, Wyoming. The signs are believed to have been returned to the manufacturer following use, but there is no paperwork to confirm. Efforts to ascertain knowledge of the purchase or return of the devices from the manufacturer were fruitless. Bridger Coal Mine does not have intentions now, or in the future, to possess generally licensed devices."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
Each exit sign contained 7.5 curies of tritium.
* * * UPDATE ON 08/11/2025 AT 1606 EDT FROM VICTOR LOUDERBACK TO ROBERT THOMPSON * * *
The following is a summary of information provided by the licensee via email:
One of the missing signs was located by the licensee. Disposal is being coordinated by a vendor.
Notified R4DO (Agrawal), NMSS Events Notification (email), ILTAB (email)
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
EN Revision Text: LOST TRITIUM EXIT SIGNS
The following information was provided by the licensee via phone and email:
"Two tritium exit signs cannot be located at Bridger Coal Mine in Point of Rocks, Wyoming. The signs are believed to have been returned to the manufacturer following use, but there is no paperwork to confirm. Efforts to ascertain knowledge of the purchase or return of the devices from the manufacturer were fruitless. Bridger Coal Mine does not have intentions now, or in the future, to possess generally licensed devices."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
Each exit sign contained 7.5 curies of tritium.
* * * UPDATE ON 08/11/2025 AT 1606 EDT FROM VICTOR LOUDERBACK TO ROBERT THOMPSON * * *
The following is a summary of information provided by the licensee via email:
One of the missing signs was located by the licensee. Disposal is being coordinated by a vendor.
Notified R4DO (Agrawal), NMSS Events Notification (email), ILTAB (email)
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: 58003
Rep Org: Colorado Dept of Health
Licensee: First Bank Holding Company
Region: 4
City: Thornton State: CO
County:
License #: GL001966
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Ernest West
Licensee: First Bank Holding Company
Region: 4
City: Thornton State: CO
County:
License #: GL001966
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Ernest West
Notification Date: 10/22/2025
Notification Time: 18:41 [ET]
Event Date: 09/12/2024
Event Time: 00:00 [MDT]
Last Update Date: 10/22/2025
Notification Time: 18:41 [ET]
Event Date: 09/12/2024
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) (EMAIL)
Vossmar, Patricia (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
AGREEMENT STATE REPORT - LOST EXIT SIGN
The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:
The licensee reported that one exit sign, containing 6.2 Ci of tritium, was lost in Thornton, Colorado.
Manufacturer: Isolite Corporation
Model number: 880-12-6
Isotope: H-3
Activity: 6.2 Ci total
Event report ID number: CO250033
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 one exit sign, containing 6.2 Ci of tritium, was lost in Thornton, Colorado.
Manufacturer: Isolite Corporation
Model number: 880-12-6
Isotope: H-3
Activity: 6.2 Ci total
Event report ID number: CO250033
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