Sealed & General License Sources

Sealed sources contain radioactive material that is permanently sealed in a capsule or bonded and in a solid form. The capsule of a sealed radioactive source is designed to prevent the radioactive material from escaping or being released during normal usage and under probable accident conditions. 

General license sources are types of sealed sources that can be obtained without a license with the University of Iowa. Labs that acquire a general license source or any other sealed source are required to inform EHS – Radiation Safety of the acquisition. Copies of source documentation must be forwarded to EHS – Radiation Safety as soon as possible after acquisition.

All sources on campus must be made available to EHS – Radiation Safety staff for monitoring. An inventory of all sources occurs either on an annual or quarterly schedule based on the isotope and activity of the source. Leak testing of sources may occur as well based on the isotope and activity of the source. All sources must remain in the same condition as received from the manufacturer. Sealed sources that have been damaged beyond what would reasonably be expected to occur due to normal use should be reported to EHS – Radiation Safety as soon as possible.

Disposal or return of radioactive sealed or general license sources must be coordinated through EHS – Radiation Safety. Disposal of some types of sources may require additional costs.

Contact information and areas of expertise can be found on the Contact Us page
 

Documents

Radiation Protection Guide - Research

Training

  • Radiation Safety, Basic – W002RD
    • Audience: Users of radioactive materials in non-human research.
    • Required initially.
  • Radiation Safety, Refresher – W001RD
    • Audience: Users of radioactive materials in non-human research.
    • Required annually after completing Radiation Safety, Basic. May not be used as initial training course, see Radiation Safety Basic.
  • Electron Capture Detector – W024RD
    • Audience: Individuals using gas chromatographs with ECDs.
    • Required initially and annually.
  • Sealed Source Radiation Safety – W023RD
    • Audience: Sealed source users in Intermediate & Advanced Physics Labs.
    • Required initially and annually.

For further training and registration information, go to EHS Safety Training.

Resources

External Links