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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 52281 | 4 October 2016 05:00:00 | Agreement State | Agreement State Report - Stuck Closed Shutter on Fixed Radioactive Gauge | The following information was obtained from the State of Illinois via email: On October 4, (2016), the licensee's radiation safety officer contacted the Agency (Illinois Emergency Management Agency) to report a defective fixed gauge. While performing routine operational checks of fixed gauges at the site, the shutter on a device appears to have become disconnected from its handle and will not operate properly. It was determined from radiation measurements that the shutter is currently in the 'closed' position. Radiation levels are less than 2 mR/h surrounding the device and it is in an area that is routinely inaccessible. The gauge is mounted on a reaction process vessel and is subject to the ambient weather conditions with no prior operational issues for 27 years until now. Arrangements are pending with a manufacturer's representative to investigate the matter and repair/replace the device. Source/Radioactive Material: SEALED SOURCE GAUGE Radionuclide: Cs-137, 0.064 Ci, 2.368 GBq Manufacturer: VEGA AMERICAS, INC. Model Number: A-2102 Serial Number: M3107 IAEA Category: 4 Illinois Report No.: IL16009 | ||
| ENS 42580 | 15 December 2005 04:00:00 | 10 CFR 20.2201(a)(1)(ii) | Lost Electron Capture Detector Containing Ni-63 Source | The licensee reported that a electron capture detector (Perkin Elmer model # 0330-0119, serial # 2161) is declared lost as of 05/16/06. The detector contains a sealed 10 milliCi Ni-63 source (Ni-63 plated foil). The detector was being stored in a lab area used by the previous RSO and was thought at one time to have been returned to the manufacturer due to obsolescence of the detector. The detector was discovered missing in December 2005 and is believed to have been discarded in general waste in Spring 2005 during a reorganization of the facility. THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL 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. |