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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 43600 | 27 August 2007 04:00:00 | 10 CFR 20.2201(a)(1)(i) | Lost Tritium Exit Sign | On August 15, 2007 Logan Generating Station personnel noted that a tritium exit sign was missing from its installed location. They did an extensive search of the premises from that time until August 27, 2007 when they concluded that the sign was lost. The search involved looking in the coal crushing area as well as the feeder and conveyor sites. An email was sent to plant employees asking if they knew the whereabouts of the sign. They completed walking searches of the remainder of the Coal Storage Building as well as a search through their trash cans and dumpsters without finding the sign. The sign was last seen present in its expected location during an inventory of tritium exit signs conducted on July 10, 2007. The activity of the sign was originally 15 to 20 curies in the 1993 to 1994 time frame in which it was purchased. The plant will conduct additional training on exit signs during its regular annual training period as well as continuing their monthly and quarterly inspections of installed nuclear devices. The lost sign was additionally reported to the New Jersey Environmental Radiological Group. 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. 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 |