To maintain proper control of radiation sources and to meet our regulatory requirements it is necessary for a radiation laboratory to keep an inventory of all its radiation sources. This inventory shall include the following information:

  • source description
  • original activity or radiation emission rate and date                
  • current activity (date of inventory)
  • physical location
  • disposition of material and date

Inventory form AU-1 is recommended for recording the above information may be obtained from the Radiation Safety Office.

The following inventories are required:

  1. an annual inventory to be submitted to the Radiation Safety Officer by all Authorized Users,
  2. an annual physical inventory of all radiation sources to be conducted by the Radiation Safety Office with assistance from all Authorized Users. 
  3. For purposed of material accountability, Special Nuclear Material inventories are conducted at six month intervals by the Radiation Safety Office and the Reactor Operations group.