This is the second edition of CSA Standard 8620, Hiqhway Tanks and Portable Tanks for the Transportation of Dangerous Goods; it replaces and supersedes Preliminary Standard 8620, of the same title, published in 1987.
This Standard specifies requirements for highway tanks, portable and intermodal portable tanks, multiunit tank car tanks, reinforced plastic (RP) highway tanks, and pressure/vacuum liquid waste highway tanks for the transportation of dangerous goods.
It is the intent of the CSA Technical Committee to further develop this Standard in the future in cooperation with industry representation and regulatory authorities in Canada and the USA to meet the needs in Canada and to achieve a maximum degree of uniformity with the USA.
It should be noted that this Standard, by itself, does not have the force of law unless it is officially adopted by a regulatory authority. Since the Standard may be adopted into regulations with certain exceptions or additional requirements, it is recommended that the regulations of the relevant jurisdiction be consulted in order to establish the extent to which this Standard has been adopted. Where an industry practice differs from the requirements of this Standard, an application for a permit of equivalent level of safety may be requested from the regulatory authority.
This Standard applies to tanks, other than intermediate bulk containers, or tubes used for the transportation of dangerous goods primarily by road, and to intermodal portable tanks for the transportation of dangerous goods, other than by air. It considers the design, construction, certification, assembly, modification, repair, testing, inspection and periodic re-testing, maintenance, and identification of such tanks. Additional design and construction requirements for tanks intended to carry specific products are provided in the following CSA Standards:
Selection and Use of Highway Tanks, Portable Tanks, Cargo Compartments, and Containers for the Transportation of Dangerous Goods, Classes 3, 4, 5, 6.1, 8, and 9; and
Selection and Use of Highway Tanks, Multi-Unit Tank Car Tanks, and Portable Tanks for the Transportation of Dangerous Goods, Class 2.
The Transportation of Dangerous Goods Act, 1992, and the Transportation of Dangerous Goods Regulations may set out requirements that are additional to or different from those in this Standard due to particular characteristics or properties of individual dangerous goods. Where there is an inconsistency between the requirements of this Standard and those of the Act or Regulations, the Act or Regulations prevail to the extent of the inconsistency.
The use of this Standard does not reduce the necessity for competent engineering judgement or complete design calculations that take into account the intended use of the tank. The values of the various parameters in this Standard are the limiting values to which the tank is restricted. It is the responsibility of the tank manufacturer to ensure that the tank will safely carry out its intended function within these constraints.