Irradiator access

Review: February 2020

Since May 31st, 2015, access to the irradiator is permitted only for persons with a background check.

Here are the steps that must be completed in order to receive the irradiator access at the University of Toronto.

Step 1: Obtain a Security Clearance Letter from the Toronto Police Services (see below Appendix 1 of the University of Toronto Security Plan). The Security Clearance Letter must be delivered in person, by the applicant, to the Senior Radiation Safety Officer, University of Toronto. The applicant must have a government-issued photo ID (see appendix 1 below).

Step 2: Provide an updated CV to the Senior Radiation Safety Officer, University of Toronto.

Step 3: Complete the online training EHS 710 Sealed Source Safety (see for registration)

Step 4: Upon completion of steps 1 to 3, an interview is scheduled with the direct supervisor of the applicant.

Step 5: The Campus Police are then contacted by the Radiation Protection Service, to issue the access code; a nominal fee, must be paid by the applicant to the Campus Police to receive the access code.

Step 6: This access code is then provided to the applicant, at the time of irradiator follow up; the follow-up training is provided by the Radiation Protection Service.

Step 7: The applicant becomes an authorized irradiator user and is attached to the irradiator permit of the supervisor/permit holder. 

Appendix 1 – Sealed Sources Personal Trustworthiness and Reliability Program

The University must ensure that all persons with unescorted access to the irradiator facilities comply with REGDOC-2.12.3, Security of Nuclear Substances: Sealed Sources

As of 31 May 2015 all persons who apply for unescorted access must undergo the following process:

  1. The identity must be confirmed from a reliable original document  such as passport or combination of valid driver licence, health card, and birth certificate;
  2. A Security Clearance Letter from Toronto Police Services must be submitted to the Senior Radiation Safety Officer. Information about attaining the Clearance Letter and the process to obtain it can be found here.  
  3. If employed at the University of Toronto for less than 5 years, a resume/cv documenting employment will be submitted to the Senior Radiation Safety Officer which will include contact information of employers;
  4. The current and/or previous work supervisor of the applicant for the last 5 years will be contacted and a reference check of the candidate will be conducted.

The Senior Radiation Safety Officer will deny access to an applicant if:

  1. The clearance letter or the criminal record name check is incomplete, show “not cleared”, “records may or may not exist”, or show the conviction of a serious crime within the past five years (including murder, attempted murder, or indictable offense involving violence)
  1. A failed reference check.

The SRSO will inform the applicant in writing of their application process. The applicant may appeal to the University of Toronto Radiation Protection Authority (UTRPA).

The UTRPA decision will be definitive.