Dosimetry Service Providers

The Canadian Nuclear Safety Commission (CNSC) licenses Dosimetry Service Providers under the Nuclear Safety and Control Act. Licence requirements are detailed in CNSC's Radiation Protection Regulations. The regulations state that licensees must use a licensed dosimetry service to measure the radiation doses to all employees who have a reasonable probability of receiving an effective dose of 5 mSv or greater in a year.

According to the regulations, an application for a licence to operate a dosimetry service shall contain the following information:

  • a description of the proposed operation of the dosimetry service
  • the proposed quality assurance program
  • the types of dosimetry services proposed to be provided, including the types of radiation that will be monitored and their respective energy ranges
  • the precision, accuracy and reliability of the dosimetry services to be provided
  • the proposed qualification requirements and training program for workers

There are two categories of dosimetry service providers. Commercial service providers supply dosimetry for external clients, while in-house service providers are nuclear licensees with the capability of providing dosimetry services for their own employees and visitors. Each dosimetry service provider must meet the technical and quality assurance requirements outlined in CNSC's Technical and Quality Assurance Standards for Dosimetry Services (S-106 rev 1) (PDF). These include requirements for performance and calibration testing, with CNSC notification of any test failure.

Every licensee who operates a dosimetry service shall file with the National Dose Registry of Health Canada, at a frequency specified in the licence and in a form compatible with the Registry, specific information for each nuclear energy worker for whom it has measured and monitored a dose of radiation.

Licence Transfer

Under certain circumstances – as per the Nuclear Safety and Control Act (NSCA), sections 24(2) and 24(4) – the CNSC may authorize the transfer of a licence from one licensee to another, or to a new licence applicant, provided there has been no significant change in the licensed activity. This process is intended to simplify the regulatory process for licensees, while ensuring that all regulatory requirements are met.

A request for licence transfer can be triggered by the following changes:

  • change to a corporation's name and number
  • corporate merger
  • corporate restructuring

To make an application for the transfer of a dosimetry services licence, the applicant must provide information prescribed by the Radiation Protection Regulations, the General Nuclear Safety and Control Regulations, and S-106 Revision 1, Technical and Quality Assurance Requirements for Dosimetry Services. The information already submitted in support of the existing licence does not have to be re-submitted, provided that it has not changed and that it will be applicable to the transferee.

When making the application, the transferor is expected to consider, amongst other things:

  • general licence application requirements
  • application for licence to operate
  • obligations of the licensees
  • representative of Applicants and Licensee
  • retention and disposal of records
  • schedule of fees payable
  • technical requirements
  • quality assurance requirements
  • type test specifications
  • independent test specifications