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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 54924 | 30 September 2020 20:00:00 | Agreement State | EN Revision Imported Date : 10/2/2020 AGREEMENT STATE REPORT - VEHICLE RAN OVER PORTABLE MOISTURE GAUGE This is a summary of a call from the state of Mississippi Division of Radiological Health via phone: A portable moisture density gauge, containing 9 mCi Cs-137 and 44 mCi Am-241/Be sealed sources, was run over by a vehicle at a construction site in Clinton, MS. No visible damage of the gauge was identified. The licensee's survey results were normal for a retracted source. The gauge was returned to a local office and the state will also perform a survey once they are on site. There was no exposure to personnel.
The updated report was sent from the state of Mississippi Division of Radiological Health via email: Off Norrell Road, off MS. 1-20 Clinton Mississippi Continental Tire Construction site off-ramp, the gauge user was on a noisy construction site with heavy equipment and ear protection requirements. The gauge user was taking a measurement and the high elevated Rubber Tire Roller used to pack asphalt did not see the gauge user. The gauge user yelled at him trying to get him to stop, but due to the noise and the driver not seeing him, the rubber tire roller ran over edge of Humboldt Moisture Density Gauge model 5001 Ser. No. 9624, only damaging the outer housing. The RSO was contacted, used a survey meter Troxalert Model 01754 calibrated 01/10/2020, and received readings of 6 mR/hr which are consistent with previous readings that indicate the source was in the shielded position. The gauge is at the RSO's office and is being sent to Humboldt for electronics and housing repair and a wipe test. The incident was an accident. No violations could be issued to the licensee due to gauge user being present taking moisture readings and the driver of the rubber tire packer just did not see him. Mississippi Event Number MS-200003 Notified R4DO (Silva), NMSS Events Notification (e-mail) | |||
| ENS 54658 | 9 April 2020 18:42:00 | Agreement State | Agreement State Report - Stuck Shutter | The following is a summary received from the state of Mississippi via phone: The licensee notified the state that during a routine check of an Ohmart gauge (s/n: 1169GK), the shutter would not close. The gauge contains a 10 mCi Cs-137 source (source holder: SHF-1). It is located over a chemical bin and the normal shutter position is open, so there is no additional exposure to employees. An authorized company is scheduled to remove and replace the gauge with an identical model. | ||
| ENS 54469 | 30 December 2019 06:00:00 | Agreement State | EN Revision Imported Date : 2/7/2020 AGREEMENT STATE REPORT - RADIOGRAPHY SOURCE COULDN'T BE RETRACTED The following was received from the Agreement State via e-mail: RSO reported inability to retract a 40.2 Ci Ir-192 source (Source Model A424-9), (Source Serial No. 89706G) into the Sentinel/QSA 880 Delta exposure device (Serial No. D12297) during the period of 12/31/2019 to 1/1/2020. Licensee notified of 24 hour reporting requirement and to send written 30-day report. Mississippi report number: MS-200001.
The state of Mississippi sent the following update by email: (State Health Physicists) investigated the inability to retract the source, and the RSO reported that corrosion inside the crank cables caused the cable to hang up. The crew followed their emergency procedures and called the RSO. The RSO retracted the source into the fully shielded position and OSL (optically stimulated luminescence) badges were processed showing that no over exposure occurred, and the occupation exposure limits were maintained in compliance. Notified R4DO (Taylor) and NMSS Events Group by email. |