Event Notification Report for April 16, 2024
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/15/2024 - 04/16/2024
EVENT NUMBERS
57080
57080
Agreement State
Event Number: 57080
Rep Org: Texas Dept of State Health Services
Licensee: The Dow Chemical Company
Region: 4
City: Lake Jackson State: TX
County:
License #: L 00451
Agreement: Y
Docket:
NRC Notified By: Art Tucker
HQ OPS Officer: Bill Gott
Licensee: The Dow Chemical Company
Region: 4
City: Lake Jackson State: TX
County:
License #: L 00451
Agreement: Y
Docket:
NRC Notified By: Art Tucker
HQ OPS Officer: Bill Gott
Notification Date: 04/17/2024
Notification Time: 10:34 [ET]
Event Date: 04/16/2024
Event Time: 00:00 [CDT]
Last Update Date: 04/17/2024
Notification Time: 10:34 [ET]
Event Date: 04/16/2024
Event Time: 00:00 [CDT]
Last Update Date: 04/17/2024
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Young, Cale (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Young, Cale (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - DAMAGED GAUGE SHUTTER
The following was received from the Texas Department of State Health Services (the Department) via email:
"On April 16, 2024, the Department was notified by the licensee that they had removed a Natco model B-20-06 nuclear gauge containing a 175 millicurie (original activity) Cs-137 source from a vessel to allow work on the vessel. The gauge shutter was in the closed position and was functioning normally. Dose rates taken at the gauge before removal were normal at 0.65 millirem per hour.
"After the gauge was removed from the vessel, it was placed on a pallet with other gauges that had been removed from the vessel. At this time, the licensee performed additional radiation surveys, and the dose rate taken within a foot at the top of the gauge shutter was now reading 8.65 millirem per hour. The gauges were all moved to a locked storage location.
"The licensee has contacted a service company to inspect the gauge and determine the cause for the increased dose rates. The licensee's radiation safety officer (RSO) stated the shutter may have been damaged as the gauge was being moved to the pallet. The RSO stated no overexposures had occurred.
"Additional information will be provided as it is received in accordance with SA-300."
Texas Incident No.: 10099
Texas NMED No.: TX240012
The following was received from the Texas Department of State Health Services (the Department) via email:
"On April 16, 2024, the Department was notified by the licensee that they had removed a Natco model B-20-06 nuclear gauge containing a 175 millicurie (original activity) Cs-137 source from a vessel to allow work on the vessel. The gauge shutter was in the closed position and was functioning normally. Dose rates taken at the gauge before removal were normal at 0.65 millirem per hour.
"After the gauge was removed from the vessel, it was placed on a pallet with other gauges that had been removed from the vessel. At this time, the licensee performed additional radiation surveys, and the dose rate taken within a foot at the top of the gauge shutter was now reading 8.65 millirem per hour. The gauges were all moved to a locked storage location.
"The licensee has contacted a service company to inspect the gauge and determine the cause for the increased dose rates. The licensee's radiation safety officer (RSO) stated the shutter may have been damaged as the gauge was being moved to the pallet. The RSO stated no overexposures had occurred.
"Additional information will be provided as it is received in accordance with SA-300."
Texas Incident No.: 10099
Texas NMED No.: TX240012