Part 320: Radioactive Materials Inventory
The radiation safety officer or designee maintains an inventory of all radioactive materials received, all wastes disposed of, and all radioactive materials and wastes stored in the radioactive waste storage building, the hazardous materials storage building, and the Engineering Isotopes Laboratory. Authorized users are required to notify the radiation safety officer whenever they dispose of radioactive materials via the sewer system or by gaseous release (see Part 340), or if they transfer radioactive material from one user to another (see Part 310.60).
All users shall maintain a separate log showing the use of radioactive materials in possession, including the date the radioactive materials were received, the amount that was received, the date(s) it was used and the amount used on each date. This log must be kept in a clear and concise format that can easily be understood by the radiation safety officer or other inspector.
Sealed sources are those devices containing radioactive materials hermetically sealed in a glass or plastic vial, plastic or metal disc, sheet, rod, or in a double-encapsulated stainless steel cylinder. These sources need only be reported on the user's application to use radioactive materials. The radiation safety officer or designee will inventory these sources every six months, and perform leak tests as required.