Compressed Gas
CSA Cylinder Standards – June 2018 Update

compressed gas cylinders

CSA issues new Editions of TDG Class 2 Cylinder Standards

Transport Canada has issued an update “Notice” to inform the regulated community of recent updates to the Canadian Standards Association (CSA) standards addressing the requirements for the manufacture/qualification, selection and use of cylinders used in the transportation of dangerous goods (TDG).

Although these standards are primarily for compressed gases, their use may also be required or permitted for DG substances, other than Class 2, that may produce toxic or flammable vapours. Typically, this information is cited in standard TP14850 by reference in the packing instructions.

The four standards involved are:

CSA B339, CSA B340
(design/manufacture/qualification and selection/use, respectively) regarding cylinders, spheres and tubes, and other similar containers.
CSA B341, CSA B342
(manufacture/qualification and selection/use, respectively) regarding UN pressure receptacles and multi-element gas containers (MEGC).

Why Two Sets? Origins

The B339/B340 set are the seventh revision to the standards based on the older CTC (Canadian Transport Commission, pre-Transport Canada) national standards for these types of containers. These versions are the seventh revision of the original editions commencing in 1983 and 1986 respectively.

This contrasts with the B341/B342 set derived from the standards in UN Recommendation model regulations. The Canadian versions referenced here are the 3rd editions following 2009 and 2015 editions. Issuing these as CSA standards, rather than just adopting the UN Recommendations, facilitates incorporating the country-specific aspects such as special permits, reciprocity, etc.

Details

Although the 2 Continue Reading…

Hot Air Balloons

On June 28, 2010, Transport Canada issued an Advisory Notice about hot air balloons. This notice addresses two (2) issues with the Regulations:

  1. an exemption
  2. cylinder compliance

1. Exemption: Section 1.27 Operation of a Means of Transport or a Means of Containment Exemption of the TDG Regulations does provide an exemption for propane cylinders. The catch is that the hot air balloon must be flight-ready and the cylinders are attached to the hot air balloon. Once the cylinders are removed from the hot air balloon for refill or the hot air balloon is not flight ready, such as when transporting the hot air balloon in a trailer, the exemption no longer applies.

2. Cylinder compliance: in TDG, Section 5.10 Means of Containment for Class 2, Gases requires the selection and use of cylinders in accordance with the Canadian Standards Association (CSA) standard B340. In addition, the manufacture of the means of containment (cylinder) must be done in accordance with CSA B339.

CSA B340 Selection and Use of Cylinders, Spheres, Tubes, and Other Containers for the Transportation of Dangerous Goods, Class 2:  this standard covers the safety requirements for selecting and using cylinders for the transportation of dangerous goods in Class 2. It also covers the requirements for filling and handling of cylinders for Class 2 dangerous goods.

CSA B339 Cylinders, Spheres, and Tubes for the Transportation of Continue Reading…