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 Start dateReporting criterionTitleEvent descriptionSystemLER
ENS 4162621 April 2005 21:50:00Agreement StateEquipment Failure to Function as DesignedA licensee employee, trained by the device manufacturer, was performing a device inspection (inventory/shutter check/leak test) for one of the licensee's non-portable gauging devices (Ohmart Corporation Model SH-F2, serial number 2296CG) containing 7.4 gigabecquerels (200 millicuries) of cesium-137 (sealed source model number A-2102). A screw broke off while the employee was closing the device shutter. Because the screw broke off, the shutter could not be closed. The licensee plans to follow the manufacturer's procedures for this particular incident as per the manufacturer's training and instruction. This device will either be repaired by an individual specifically licensed by the Executive Secretary, the U.S. Nuclear Regulatory Commission, or an Agreement state to perform such service, or the licensee will return this device to the manufacturer. Event date was March 2005 and reporting date was April 21,2005. Utah event report # UT-05-0003
ENS 4437628 July 2008 13:00:00Agreement StateAgreement State Report - Broken Shutter on Fixed GaugeThe state provided the following information via fax: The shutter on an Ohmart fixed gauge, (Model SH-F2, serial number 1404CG), containing 1000 mCi of Cs-137 needed to be closed for maintenance to be performed on other equipment. When maintenance personnel tried to close the shutter, the shutter would not move to the closed position. Maintenance personnel tried to force the shutter closed and one of the screws for the operating handle broke. The shutter still would not close. The licensee removed the gauge from service, shielded the device, and had the device repaired by an authorized licensee. Utah event number: UT080001
ENS 444057 August 2008 00:40:00Agreement StateAgreement State Report - Broken Shutter on Fixed GaugeThe state provided the following via facsimile: During a shift change for the Euclid drivers, the crusher operator went to the bottom of the crusher and attempted to close the shutter of an Ohmart fixed gauge, (Model SH-F2, serial number 1849CG), containing 1000 mCi of Cs-137, but although the handle turned, the shutter did not close. The operator indicated that there had been no resistance when the shutter handle was turned. One of two screws in the shutter handle was broken and therefore the shutter would not turn when the handle was turned. The last time the shutter was closed was on July 3, 2008. It is unknown at this time when or how the screw was broken. This device will be repaired by an individual specifically licensed by the Utah Division of Radiation Control to perform such service. Utah report number: UT080002
ENS 5405624 April 2019 22:30:00Agreement StateAgreement State Report - Fixed Gauge Shutter Failed ClosedThe following was received via e-mail: On April 24, 2019 at about 4:30 PM (MDT), the RSO (Radiation Safety Officer) for Kennecott Copper Corporation called and notified a DWMRC (Utah Department of Environmental Quality, Division of Waste Management and Radiation Control) staff member that one of their gauges was not working properly. The licensee reported that the shutter on a fixed gauge, an Ohmart Vega, model number SH-F2, serial number 68852, containing 800 mCi of Cs-137 in a sealed source did not open when a shutter test was conducted. The licensee stated that the gauge would be left in place for now and removed and cleaned the next week, to see if that resolved the problem. The RSO reported that he would engage a licensed provider if disassembly is required to fix the problem. Another (DWMRC) staff member spoke to the licensee's RSO at about 5:00 PM that evening. The licensee's RSO indicated that they did not have the information regarding the gauge with them at the time but that they believed the gauge just needed to be cleaned. The licensee indicated that the gauge had not been in use for a while and that they were testing the device prior to putting the device back into operation when the issue was discovered. The gauge is located in an area difficult to access. The licensee would need to use certain equipment to safely reach and remove the gauge. The RSO had tried to contact their regular gauge service licensee and determined that the service licensee would not be available until after May 1, 2019. The RSO indicated that they would remove and clean the gauge the following week. Specific individuals on the licensee's radioactive materials license are authorized to install and remove gauges and the extra time would allow the RSO to ensure that the appropriate individuals were available. On April 30, 2019, the licensee's authorized personnel removed the gauge from its location at the pebble crusher. After a thorough cleaning of the exterior of the source housing, the shutter was still showing no movement. The RSO realized the gauge needed to be taken apart and cleaned in order to allow the shutter to work properly. The service licensee was contacted and arrangements were made for the service licensee to work with the gauge on May 2, 2019. The device was stored in a properly secured area at any time it was not under the licensee's constant surveillance until the service licensee took possession of the device. The licensee informed the DWMRC that they would provide a report regarding the outcome. Event Report No.: UT190002 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.pdf