Event Notification Report for April 13, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/12/2023 - 04/13/2023
Non-Agreement State
Event Number: 56467
Rep Org: US Army
Licensee: US Army
Region: 4
City: Vicksburg State: MS
County:
License #: 230154416
Agreement: N
Docket:
NRC Notified By: Anthony Miller
HQ OPS Officer: John Russell
Licensee: US Army
Region: 4
City: Vicksburg State: MS
County:
License #: 230154416
Agreement: N
Docket:
NRC Notified By: Anthony Miller
HQ OPS Officer: John Russell
Notification Date: 04/13/2023
Notification Time: 16:50 [ET]
Event Date: 04/13/2023
Event Time: 16:50 [CDT]
Last Update Date: 04/13/2023
Notification Time: 16:50 [ET]
Event Date: 04/13/2023
Event Time: 16:50 [CDT]
Last Update Date: 04/13/2023
Emergency Class: Non Emergency
10 CFR Section:
20.2202(b)(1) - Pers Overexposure/Tede >= 5 Rem
10 CFR Section:
20.2202(b)(1) - Pers Overexposure/Tede >= 5 Rem
Person (Organization):
Deese, Rick (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
Deese, Rick (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL) (EMAIL)
UNACCOUNTED FOR TROXLER MOISTURE GAUGE
The following information was provided by the licensee via phone and email:
"While finishing the renewal of our license, I was not able to account for one device found in a 2016 inventory, the number of devices matched the number of devices listed on our 2016 license.
"Both the license and inventory from 2016 listed 10 devices, I could only account for 9 devices.
"On the 11th of April, documentation was found in our property management system that listed the device as transferred to an outside agency, agency is unknown.
"The last leak test preformed on this device was in 2013, so the condition of the shielding in 2016 is not known, when it was transferred.
"The missing device is a Troxler model 3411 device serial number is 13760.
"The device contains two sources americium-241 with 44 millicuries at 1.480 giga becquerels (SN 47-9073), and cesium-137 with 9 millicuries at 0.296 giga becquerels (SN 50-2578)"
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.pdfThe following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The following information was provided by the licensee via phone and email:
"While finishing the renewal of our license, I was not able to account for one device found in a 2016 inventory, the number of devices matched the number of devices listed on our 2016 license.
"Both the license and inventory from 2016 listed 10 devices, I could only account for 9 devices.
"On the 11th of April, documentation was found in our property management system that listed the device as transferred to an outside agency, agency is unknown.
"The last leak test preformed on this device was in 2013, so the condition of the shielding in 2016 is not known, when it was transferred.
"The missing device is a Troxler model 3411 device serial number is 13760.
"The device contains two sources americium-241 with 44 millicuries at 1.480 giga becquerels (SN 47-9073), and cesium-137 with 9 millicuries at 0.296 giga becquerels (SN 50-2578)"
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.pdfThe following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
Power Reactor
Event Number: 56468
Facility: Maine Yankee
Region: 1 State: ME
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: John Pelkington
HQ OPS Officer: John Russell
Region: 1 State: ME
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: John Pelkington
HQ OPS Officer: John Russell
Notification Date: 04/13/2023
Notification Time: 22:48 [ET]
Event Date: 04/13/2023
Event Time: 19:05 [EDT]
Last Update Date: 04/13/2023
Notification Time: 22:48 [ET]
Event Date: 04/13/2023
Event Time: 19:05 [EDT]
Last Update Date: 04/13/2023
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):
Lilliendahl, Jon (R1DO)
Lilliendahl, Jon (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Defueled | 0 | Defueled |
OFFSITE NOTIFICATION FOR SEWAGE DISCHARGE
The following information was provided by the licensee via phone and email:
"At 1905 [EDT], a security force member discovered what appeared to be a sewage leak along the gravel roadway northwest of the gatehouse entrance. The affected area was approximately 12' X 15'. The water was slowly bubbling up from the ground about 20' along one of our access roads.
"Large absorbent spill containment barriers were placed at the scene to minimize the incident. Water usage was stopped within our facility, and sewer pumps isolated. The Maine State Department of Environmental Protection (DEP) was notified of the incident (DEP spill # 23-0004705). The area was inspected at approximately 2130 [EDT], and water discharge was no longer observed.
"Maine Yankee site management is currently in the process of contacting contractors to resolve the issue.
"The site is safe and secure. The concrete cask heat removal system is operable, and the temperature monitoring system is functional."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee notified Region 1 personnel.
The following information was provided by the licensee via phone and email:
"At 1905 [EDT], a security force member discovered what appeared to be a sewage leak along the gravel roadway northwest of the gatehouse entrance. The affected area was approximately 12' X 15'. The water was slowly bubbling up from the ground about 20' along one of our access roads.
"Large absorbent spill containment barriers were placed at the scene to minimize the incident. Water usage was stopped within our facility, and sewer pumps isolated. The Maine State Department of Environmental Protection (DEP) was notified of the incident (DEP spill # 23-0004705). The area was inspected at approximately 2130 [EDT], and water discharge was no longer observed.
"Maine Yankee site management is currently in the process of contacting contractors to resolve the issue.
"The site is safe and secure. The concrete cask heat removal system is operable, and the temperature monitoring system is functional."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee notified Region 1 personnel.