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Canadian Registration Number (CRN)

Pressure boundary systems and equipment including piping systems, pressure vessels, valves, and fittings
MECS Engineering has extensive experience in obtaining Canadian Registration Numbers (CRN) from regulatory authorities such as TSSA, ABSA, BCSA, and ACI. We guide you through the entire process, review and verify your design, prepare the submission package on your behalf, and certify your design as professional engineers. Additionally, we coordinate with regulatory bodies to address technical questions and clarifications, ensuring a smooth and efficient application process.

What is Canadian Registration and CRN:

In general, a Canadian registration number (CRN) is a unique number assigned to pressure retaining equipment and systems with a maximum operating pressure of 15 PSIG or more that may require legal registration and approval to install and operate in Canada. The rules and exemptions for obtaining a CRN are defined in CSA B51, the Boiler, Pressure Vessel, and Pressure Piping Code. However, the interpretation of these rules and exemptions may vary depending on the Provincial Regulatory body, so it is crucial to understand the code requirements and Provincial Regulations.
Once the design and specifications of the pressure retaining equipment and systems are accepted and registered by the regulatory authority, they are assigned a CRN. A CRN typically consists of a letter, four digits, and a decimal point, followed by up to ten digits and/or two letters. Designs are registered provisionally, and the CRN indicates that the equipment or system has been approved for use and meets the applicable codes and standards.

The Designs are registered Provisionally and following identifications are in use:

  1. British Columbia
  2. Alberta
  3. Saskatchewan
  4. Manitoba
  5. Ontario
  6. Quebec
  7. New Brunswick
  8. Nova Scotia
  9. Prince Edward Island
  10. Newfoundland and Labrador
  11. Northwest Territories
  12. Yukon
  13. Nunavut
Since 2020, the design reviews conducted by the provinces and territories in Canada for the Canadian registration number (CRN) have become mutually recognized by the jurisdictions participating in the Reconciliation Agreement. This means that once a design is registered and approved in one province, it may be accepted for use in other participating provinces without the need for additional registration. This agreement streamlines the process for obtaining a CRN for pressure retaining equipment and systems and makes it easier for manufacturers and users to obtain the required approvals for their equipment and systems.
It is important to note that while the Reconciliation Agreement has streamlined the CRN registration process, the design must still be registered in the province where it will be used first. The requirements for registration may vary between provinces, so it is essential to understand the applicable regulations and codes in the province where the equipment or system will be used. This ensures that the equipment or system is designed and constructed to the required standards and meets the necessary safety requirements for its intended use.
For more details visit
Technical Safety and Safety Authority (TSSA)
Alberta Boilers Safety Association (ABSA)
In Canada, it is mandatory for all piping systems above 15 psig pressure (there are few exceptions) to be registered with the appropriate regulatory body before they can be used for any purpose. The registration process involves obtaining a Canadian registration number (CRN), which is a unique number that identifies a piping system and indicates that it has been approved for use in Canada. Let us take a closer look at the Canadian registration number for piping design, including what it is, how it is obtained, and why it is important.
How is a Canadian registration number obtained?
The process of obtaining a Canadian registration number for piping design can be a complex and time-consuming process. It typically involves the following steps:
  1. Determine the applicable codes and standards: The first step in obtaining a CRN is to determine which codes and standards apply to the piping system. This will vary depending on the type of piping system and its intended use.
  2. Design the piping system: The piping system must be designed in compliance with the applicable codes and standards. This will typically involve working with a qualified piping designer or engineer.
  3. Submit the application: Once the piping system has been designed an application for registration can be submitted to the regulatory body in the province or territory where the piping system will be used. The application will typically include detailed information about the piping system, including design drawings, fabrication details, testing requirements.
Why is a Canadian registration number important?
The Canadian registration number is an important indicator that a piping system has been designed and constructed in compliance with the relevant codes and standards and has been inspected and tested to ensure that it is safe for use. It is a legal requirement in Canada to have a CRN for any piping system if it is required as per CSA B51. Failure to obtain a CRN can result in fines or other penalties.
In addition to being a legal requirement, having a CRN can also provide peace of mind to the owner or operator of the piping system. It indicates that the system has been designed and constructed to a high standard of quality and safety and has been thoroughly inspected and tested.
In conclusion, the Canadian registration number for piping design is a critical aspect of ensuring the safety and quality of piping systems used in Canada. While the process of obtaining a CRN can be complex and time-consuming, it is a necessary step in complying with Canadian regulations and ensuring the safety of the people and the environment.
In Canada, it is mandatory for all piping systems above 15 psig pressure (there are few exceptions) to be registered with the appropriate regulatory body before they can be used for any purpose. The registration process involves obtaining a Canadian registration number (CRN), which is a unique number that identifies a piping system and indicates that it has been approved for use in Canada. Let us take a closer look at the Canadian registration number for piping design, including what it is, how it is obtained, and why it is important.
A Canadian Registration Number (CRN) is a unique identifier issued by Canadian provincial and territorial safety authorities. It is required for piping systems, pressure vessels, boilers, and certain types of fittings that are used in Canada. The CRN ensures that these items meet the safety standards specified by the Canadian Standards Association (CSA) and other relevant codes.
A CRN is required to ensure that piping, pressure vessels, boilers, and fittings used in Canada comply with the safety standards set forth in the CSA B51 code and other relevant regulations. This certification helps to prevent failures that could result in significant harm or damage.

CRNs are typically required for:

  • Pressure vessels
  • Boilers
  • Piping systems
  • Pressure relief devices
  • Valves and Fittings that operate under pressure
To obtain a CRN, you must submit detailed design drawings, calculations, and material specifications to the appropriate provincial or territorial safety authority. The submission is reviewed for compliance with Canadian safety codes, and if approved, a CRN is issued.
The registration process involves preparing a detailed application that includes design drawings, engineering calculations, material specifications, and sometimes proof of previous certifications or testing. This application is submitted to the relevant safety authority, which will review the documentation and may require additional information or modifications before issuing a CRN.
The time frame for obtaining a CRN can vary depending on the jurisdiction and the complexity of the equipment. It can take several weeks to a few months, depending on the completeness of the application and the workload of the reviewing authority.
Using pressure vessels, boilers, or fittings without a CRN in Canada is illegal and can result in fines, shutdowns, and legal liability. Additionally, insurance coverage may be voided if equipment without a CRN is used.
Yes, MECS Engineering Inc. offers services to assist with the CRN application process, including preparing the necessary documentation, design verification, and liaising with the appropriate safety authorities to ensure your equipment meets Canadian regulatory requirements.
Using a forged or invalid CRN is a serious offense that can lead to legal actions, significant fines, and damage to reputation. It also poses substantial safety risks, as it indicates that the equipment has not been properly vetted to meet Canadian safety standards.
To verify the validity of a CRN, you can check with the issuing provincial or territorial safety authority. Some provinces offer online databases where you can search for CRN information. It’s also advisable to keep all official documentation associated with the CRN for reference.
A CRN is specific to the design it was issued for and cannot be transferred or reused for different designs. If modifications are made to the design, a new CRN may be required.

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