Radiation Safety Training Requirements

Updated: February 2025

Radiation safety training requirements apply to all authorized users and including the radiation Permit Holder,

All radiation training courses (in class and online) are valid for 3 years (unless specified) and require a passing grade of 80%.

EHS offers many radiation safety training courses, the main ones are listed below. Please contact your HSO or ehs.courses@utoronto.ca for assistance.

  • EHS 716 or EHS 717: Radiation Safety – Theory is required to be taken by a person working with open sources who was not previously trained in radiation safety at the University of Toronto. It covers the basics of ionizing radiation, interaction of radiation with matter, biological effects and instruments used to measure radiation. The Radiation Safety – Theory is offered as: a) online course (EHS 716) and b) in-class (EHS 717). Both courses are equivalent and only one of them is necessary.
  • EHS 718: Radiation Safety – Policies and Procedures is mandatory for a person working with open sources who was not previously trained in radiation safety at the University of Toronto. It is offered only in-class. It contains: laboratory work practices, emergency preparedness and examples of calculations and direct monitoring. Pre-requisite: EHS 716 or EHS 717.
  • EHS 705: Radiation Safety Refresher (online) course must be taken by every person working with radioactive open sources every 3 years.
  • EHS 710: Sealed Sources Safety (online) is required to be taken by persons working with sealed source only.
  • EHS 715: Sealed Sources Refresher (online) must be taken by all persons kept on the list of the authorized users of sealed sources every 3 years.
  • EHS 702: Radiation Safety – Project Students (online) is required for people that will work, for a short time and under supervision, at a radioactive lab.
  • EHS 706: Introduction to Radiation Protection (online) is a course for U of T personnel that need to work outside the U of T at a nuclear facility for research or interdisciplinary project. The course is not valid to use radioactive material at the U of T.
  • EHS 720: Irradiator Safety & Security (in-person) is designed for irradiator users with authorized unescorted access. for more information please refer to the Obtaining Irradiator Access page. Pre-requisite: EHS 710.