Ontario – Technical Standards & Safety Authority (TSSA)

TSSA is a not-for-profit fiscally independent appointed regulator of pressure equipment for the province of Ontario. Its board of directors is appointed by the Minister of Consumer and Commercial Affairs.  The following are some of the documents essential to understand before constructing or selling any non-exempt pressure equipment or systems in Ontario.  These documents contain some information on applicability of regulations and exemptions.

Act: Technical Standards & Safety Act, 2000

Regulation: O.REG.220  & summary of key changes made to the regulation by TSSA’s Director

Revocation of Agricultural exemptions from CRN regime in Ontario: Effective 1 July 2021

FAQ regarding above revocation effective 1 July 2021: FAQ

TSSA code adoption document for Ontario: June 28, 2018

Pressure equipment must be registered in each province or territory where it will be used. 

Beginning January 1, 2020 design reviews conducted by provinces and territories in Canada will be mutually recognized by those jurisdictions participating in the Reconciliation Agreement for the Canadian Registration Number (CRN) for Pressure Equipment. With a single design review being conducted, the system is becoming more streamlined and efficient.

Participating jurisdictions include British Columbia, Manitoba, Northwest Territories, Nova Scotia, Ontario, Prince Edward Island, Québec, Saskatchewan, and Yukon. For more information, please contact customerservice@tssa.org.

Consult the legislation and regulation section of the TSSA.org website for more comprehensive and up-to-date information.

Also, note that the Code Adoption Document outlines the partial acceptance of CSA B51 and can be found here.


New guidelines for electronic submission of fitting CRN applications:

Significant Notes to above guidelines for electronic submission of applications

  • Notarization of statutory declarations is not required if unsafe due to social distancing rules during COVID-19 pandemic
  • TSSA is using an email system of submission and requires pdfs, no links, no encryption or password protection, meaning that one should be cautious about data transmitted due to vulnerabilities of email to interception and theft.
  • To re-iterate an earlier point, TSSA now accepts under the Reconciliation Agreement for the Canadian Registration Number (CRN) for Pressure Equipment design reviews from BC, Yukon, Saskatchewan, PEI, Nova Scotia, Québec, NWT and Manitoba.

Users are reminded that the above synopsis is only a brief outline or distillation of a specific jurisdiction’s laws, rules, and regulations. In order to avoid misinterpretation of the data or failing to address the regulatory nuances of an individual jurisdiction, or updates or outdated information herein, users are advised to consult the jurisdiction’s chief inspection officer before reaching any decision that may have critical consequences. Titan Research group, its affiliates, and employees assume no liability for the use or misuse of the information herein. See also terms of use.

The TSSA is required to implement the Technical Standards and Safety Act and directions, yet they likewise elevate and uphold activities to consistently enhance well being. The association goes about as both controller and a promoter of safety guidelines all through the region.