ENS Event | |
|---|---|
06:00 Feb 20, 2025 | |
| Title | Agreement State - Stuck Open Shutter |
| Event Description | The following information was provided by the Texas Department of State Health Services (the Department) via email:
On February 20, 2025, the Department was notified by the licensee that the shutter on a Vega SH-F2 nuclear gauge containing a 800 millicurie (original activity) Cs-137 source was found stuck in the open position during routine testing. Open is the normal position for the shutter. The licensee will try to close the shutter on February 21, 2025, when temperatures are above 32 degrees Fahrenheit to [determine whether] cold temperatures were a factor. It is a possibility that water was in the internals of the source holder, the water became ice, and then caused the shutter to not function as designed. If it is not a temperature issue, the licensee will pursue other options to repair or replace the source holder. The licensee stated there is no risk of additional radiation exposure to members of the general public or radiation workers, due to this shutter mechanism failure. Additional information will be provided as it is received in accordance with SA-300. Texas Incident Number: 10170
On February 21, 2025, the licensee stated the gauge shutter was tested and the shutter operated as designed. The licensee reported, 'There must have been ice inside the source holder.' The Department has requested additional information. Notified R4DO(Dixon) and NMSS Events (email) |
| Where | |
|---|---|
| Equistar Chemical La Porte, Texas (NRC Region 4) | |
| License number: | L00204 |
| Organization: | Texas Dept Of State Health Services |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+26.6 h1.108 days <br />0.158 weeks <br />0.0364 months <br />) | |
| Opened: | Art Tucker 08:36 Feb 21, 2025 |
| NRC Officer: | Tenisha Meadows |
| Last Updated: | Feb 21, 2025 |
| 57563 - NRC Website | |
Equistar Chemical with Agreement State | |
WEEKMONTHYEARENS 575632025-02-20T06:00:00020 February 2025 06:00:00
[Table view]Agreement State Agreement State - Stuck Open Shutter ENS 508342015-02-19T06:00:00019 February 2015 06:00:00 Agreement State Agreement State Report - Unable to Close Shutter on Nuclear Gauge 2025-02-20T06:00:00 | |