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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 53914 | 7 March 2019 05:00:00 | 10 CFR 20.2201(a)(1)(i) | Lost Tritium Exit Sign | The following is a summary of a phone call with the licensee: During a routine inventory Eli Lilly and Company discovered that one of their tritium exit signs was missing. The company believes the sign went missing during a remodeling project. The company is still actively looking for the sign, but believes that it is out of their possession at this time. The tritium exit sign, serial number A11223, was manufactured by Isolite in January of 2001. The activity at the time of manufacturing was 7.5 Ci, which would be approximately 2.5 Ci today. 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 50232 | 26 June 2014 04:00:00 | 10 CFR 20.2201(a)(1)(i) | Improperly Disposed of Tritium Signs | Notified by the licensee that three tritium exit signs were improperly disposed of as trash. The signs were manufactured by SRBT with an estimated source strength of 20 Ci for each sign. The licensee noticed the missing signs following an equipment inventory taken after a renovation. The licensee determined that the three signs were mixed with general construction debris and sent to a landfill. The licensee investigation is continuing. 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 46547 | 14 January 2011 05:00:00 | 10 CFR 20.2201(a)(1)(i) | Lost Tritium Exit Signs | A major renovation was performed in two floors of Building 22 on the Eli Lilly Campus. This renovation was completed in December, 2010. An inventory of tritium exit signs was performed and eight exit signs on the two floors were found missing and presumed disposed of during the renovation. The exit signs each contained approximately 10 Curies of tritium. The licensee will perform wipe tests but expects negative results since the concrete surfaces were all covered with carpet, tile, or wall coverings. Four Evenlite Model 201 serial numbers 57281, 59311, 57381, 57421 Four SRBT Model BX serial numbers C035796, C035795, C035790, C035789
The inventory of tritium exit signs was extended and eight additional tritium exit signs were missing. These additional exit signs were assigned to building 31 on the Eli Lilly Campus. This building had also been recently renovated. Each sign contained approximately 10 Ci tritium. Wipe tests in building 22 and 31 were performed with no activity detected. Notified the R3DO (Duncan), ILTAB (Allston), and FSME (McConnell). 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 This source is not amongst those sources or devices identified by the IAEA Code of Conduct for the Safety & Security of Radioactive Sources to be of concern from a radiological standpoint. Therefore is it being categorized as a less than Category 3 source |