• Print and complete an RUA application form.
  • RUA application (PDF)
  • RUA application for sealed sources only (PDF)
• Attach the following documents:
  • Principal investigator's (PI) curriculum vitae
  • Copies of the current grant award notices involving radioactive materials
• Mail or fax the RUA application form and attachments to EH&S Radiation Safety at:
  • Mail Code 0089
  • Fax (858) 822-7763
• Post or file the returned RUA in the lab where the work is performed.

• Amend technical details: Use the online Radioisotope Use Authorization Amendment form to:
  • Add, change, or delete locations
  • Change the project summary
  • Indicate new techniques
  • Add, change, or delete radioisotopes
  • Add or delete equipment
• Add an authorized user by completing the appropriate electronic enrollment form:
  • Researchers Using Unsealed Radioisotopes (PDF)
  • Researchers Using Sealed Radioisotopes (PDF)
• Cancel an authorized user: Use the online User Cancellation form.
• Post or file the amended RUA in the lab where the work is performed.

• At renewal time, an EH&S health physicist will interview the PI to ensure the RUA information is current and accurate.
• The EH&S health physicist will schedule and conduct annual radiation safety refresher group training for personnel named on the RUA.
• Post or file the renewed RUA in the lab where the work is performed.

Note: An RUA can be easily reactivated if research with radioactive materials resumes.

• Contact the health physicist assigned to your building to initiate RUA deactivation.
• Read How to Close or Relocate a UCSD Laboratory if the lab is being closed.