Training Requirements

Initial training requirements for Authorized Users (AU) are given in the Authorized User Responsibilities page and may vary depending on the types of intended RAM uses (i.e. research, medical, veterinary, etc).  Initial training requirements for Radiation Workers (RW) are given in Radiation Worker's Responsibilities page.  MU’s NRC License requires that AU’s and RW’s have refresher training at a minimum frequency of once every three years.  The Radiation Safety Training Program conducted by the RSS is designed to meet these training requirements. Remember: all Authorized Users are considered Radiation Workers as well. 

At a minimum, research based RWs will need to take an introductory course to radiation safety along with Radiation Safety Refresher for Researchers on a triennial basis.

Medical based RWs working in a clinical setting with humans will need to take training on an annual basis depending on their specialization (i.e. Nuclear Medicine Technologists, Y-90 Users, Radiation Oncology Users, etc.)

Veterinary Medicine based RWs working in a clinical setting with animals will need to take an introductory course to Radiation Safety for Veterinary Medicine along with a triennial radiation safety refresher training.

Laboratory specific (or authorization specific) training is a requirement once formal training has been completed through EHS. All RWs are required to receive lab specific training!

If a RW will be working in more than one setting, they may be required to take multiple types of trainings. Contact the assigned HP or for additional questions related to training.

Note: for additional instructions on becoming a Radiation Worker and registering for the correct training based on the work being performed, see Becoming a Radiation Worker. 

Ancillary training is a onetime training provided by the AU or a RW under the supervising AU.  For guidelines on ancillary training, see How to Train Ancillary Workers. To request an in-person ancillary training session of large groups, please reach out to the RSS at 


Page last updated on June 7, 2019.