On August 31, 2018, an intense fire in Glacier National Park destroyed a building and with it six (6)
exit signs containing
Tritium (
H-3). The intensity of the fire was such that the building has been reduced to ash. The remains of the building are still on site.
After a discussion with Region IV, the licensee determined that the loss of the exit signs was reportable in accordance with 10 CFR 31.5.
The licensee notified the Department of the Interior, National Park Service, Intermountain Regional Office in Denver CO, of the event.
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