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| Entered date | Event description | |
|---|---|---|
| ENS 55700 | 10 January 2022 17:47:00 | The following information was received from the Wisconsin Department of Health Services (DHS) via email: On January 10, 2022, DHS received a letter from the licensee stating that a generally licensed static eliminator device, originally shipped to them November 2, 2020, had been missing since November 2021. Activity data was not provided; however, DHS records indicate that all devices at this location contain 10 mCi of Po-210 upon receipt. The licensee did not answer the phone to confirm the written notification information. DHS will continue attempts to contact the licensee and a site inspection will be performed as soon as practical. Wisconsin Event Number: WI220001 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. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf |
| ENS 55599 | 22 November 2021 14:09:00 | The following information was received from the state of Wisconsin via email: On November 22, 2021, the Department became aware of a medical event involving Y-90 TheraSphere which occurred on November 19, 2021. A patient had been prescribed two administrations to different segments of the liver of 126 Gy and 138 Gy. However, the licensee has estimated that the administered doses were 256 Gy (103 percent (over)) and 294 Gy (113 percent (over)). The administered doses had been ordered with an incorrect calibration date. A full dose projection is ongoing by the vendor. The State will perform a reactive inspection. Wisconsin event no.: WI210010 A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient. |