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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 55171 | 4 April 2021 05:00:00 | Agreement State | Failed Shutter Handle on Nuclear Gauge | On April 5, 2021, the licensee reported that on April 4, 2021, the roll pin in the shutter handle on a Berthold Model 8010 density gauge containing 20 milliCuries of cesium-137 had failed and the shutter handle came off. The gauge had been mounted on a pipe near the well head on a well in La Salle County, Texas. The licensee is authorized to replace the roll pin so one of its trained technicians responded to the site and removed the gauge and repaired the roll pin. The technician found the shutter was closed when he surveyed prior to beginning work. The licensee also reported the technician found that the nuts had backed off of the bolts where the gauge was mounted to the pipe, so the gauge was not snug to the pipe. The licensee contacted Berthold to discuss effects of vibration as it pertains to this event (and potential effect for its other gauges mounted similarly) as well as the corrosion that was observed on roll pin(s). The licensee's determination was that there would not have been any exposures as a result of this event. The licensee will keep the gauge in storage until it can complete an evaluation of the gauge mounting location and the roll pin type for this and its other gauges. An investigation into this event is ongoing. Further information will be provided as it is obtained in accordance with SA-300. Device/Source Information: Berthold Model 8010 SN: 10455 20 milliCurie cesium-137 source: SN: 0330/12 (Eckert-Zigler Model CS7.P02) Texas Incident Number: 9836 | ||
| ENS 54992 | 10 November 2020 06:00:00 | Agreement State | Nuclear Gauge Shutter Stuck Closed | The following was received from the Texas Department of State Health Services (the Agency) by email: On November 11, 2020, the Agency was notified by the licensee's radiation safety officer (RSO) that on November 10, 2020, while working at a field site, the shutter roll pin on a Berthold Technologies LB 8010 nuclear gauge fell out and the shutter vibrated closed. The gauge contains a 20 milliCurie (original activity) source. The gauge is installed on a pipe which is installed in line with existing piping at the well site for testing. The gauge was taken out of service and the RSO stated they would repair the gauge within the next few days. The RSO stated the gauge does not pose an exposure risk to any individual. Additional information will be provided as it is received in accordance with SA- 300. Texas Incident No.: I-9811 |