Standard CSA B620: Highway tanks and TC portable tanks for the transportation of dangerous goods

Currently in force:
CSA B620-14

Date published:
July 2017 (English and French)

Previous version:
CAN/ CSA B620-09

Upcoming edition / amendment:
CSA B620-20

 

On this page

Scope of the standard

The CSA B620 standard sets out the requirements for design, construction, certification, assembly, modification, repair, testing, inspection, periodic re-testing, maintenance, and marking of highway tanks (tank trucks) and TC portable tanks for the transportation of dangerous goods.  The standard also prescribes requirements for registration by Transport Canada of facilities, design review agencies and design engineers for conducting the activities within the scope of the standard.

Finding the standard in the TDG Regulations

Section 5.10 of the TDG Regulations specifies that a means of containment in accordance with CSA B622 standard is a permitted container for the transport of dangerous goods in Class 2 by road or by ship while Section 5.14 of the TDG Regulations specifies that a means of containment in accordance with CSA B621 standard is a permitted container for the transport of dangerous goods in Class 3, 4, 5, 6.1, 8 and 9, by road or by ship.  Both the CSA CSA B622 and CSA CSA B621 invoke the CSA B620 in relation to the design, construction, certification, assembly, modification, repair, testing, inspection, periodic re-testing, maintenance, and marking of highway tanks (tank trucks) and TC portable tanks. CSA B626 invokes CSA B620 for the certification, assembly, marking, modification, repair, testing, inspection and periodic retesting, maintenance, and identification of TC 44 portable tanks.

Highway tanks specifications

Highway tanks line drawings and general descriptions of each tank specification and the dangerous goods for which they are commonly used are provided. Full information on these tanks can be found in Clause 5 of CSA B620, and in the CSA B622 standard and CSA B621 standard standards.

TC portable tanks specifications

TC portable tanks line drawings and general descriptions of each tank specification and the dangerous goods for which they are commonly used are provided. Full information on these tanks can be found in Clause 6 of the CSA B620, and in the CSA B622 standard and CSA B621 standard standards.  

Structural inspections of TC 423 highway tank trailers

The requirements for structural inspections of TC 423 highway tank trailers in accordance with CSA B620 are provided. Information is also available about the inspections authorization requirement to perform the structural inspections as well as the application process to perform structural inspections. Highway tank trucks are not subject to this requirement.

Pneumatic pressure testing requirements

Pneumatic pressure testing on highway and portable tanks requirements are provided. Information can also be found in an excerpt of Clause 7.2.7 Pressure tests of CSA B620 which states, among other things, that tank testers have the option of performing this test through two methods: hydrostatic pressure test and pneumatic pressure test. These tests are required by CSA B620.

Welding requirements for highway and TC portable tanks

The requirements pertaining to the qualification of welding procedures and welders for facilities that manufacture, repair and modify highway/portable tanks in accordance with CSA B620 are provided. A table can be found in order to help decide whether a facility requires welding procedures and welders to be registered with the applicable pressure vessel jurisdiction.

Significant changes from CSA B620-09, CSA B621-09 & CSA B622-09 to CSA B620-14, CSA B621-14 & CSA B622-14

A summary of the most significant changes to the standards that are applicable to highway tank and TC portable tank manufacturers, and any facility wishing to repair, modify, assemble, test or inspect such tanks is provided. With this amendment, the Transportation of Dangerous Goods (TDG) Regulations now dynamically reference the CSA B620, CSA B621 standard and CSA B622 standard standards. This allows stakeholders to use the most recent versions of these safety standards. Not all changes to the standards are covered here.

Obtaining a copy of the standard

The Canadian Standards Association (CSA) Group has launched an online platform that allows registered users free access to Transportation of Dangerous Goods (TDG) safety standards published by CSA Group referenced in federal TDG regulations.

If you are a registered user, you can log into communities of interest and register to find the TDG view access.

If you’re not registered, a copy of this standard can be purchased from the CSA Group.

Status of the next edition

The CSA Technical Committee on the B620 standard is continuously working on the next edition of the standard. It is expected to be published in 2020.

Contact us

Inquiries pertaining to applications for registration

Telephone: 1-855-298-1520
After choosing the language (1 for English, 2 for French), press option 1.

Email: MOCregister-Registrecontenant@tc.gc.ca

Technical inquiries

Email: tdgcontainers-tmdcontenants@tc.gc.ca.
Please include the text "Highway Tanks" or “TC Portable Tanks”, as applicable, in the subject line.

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