Packing Groups are indicated in Column 4 of the Schedule 1 in Canada’s Transportation of Dangerous Goods Regulations. More than one packing group may be indicated for a given dangerous good.
It is the shipper/offeror’s responsibility to determine which packing group applies to the dangerous goods being shipped.
- Packing group: According to TDG Regulations, packing group means a group number assigned to a particular dangerous goods, based on the inherent danger of the goods:
- Packing Group I indicates great danger;
- Packing Group II indicates medium danger; and
- Packing Group III indicates minor danger.
Summary of requirements
In Part 2, Classification, of the TDG Regulations, it states if a substance is included in only one class and one packing group, the substance is dangerous goods and the shipping name in Column 2 of Schedule I that most precisely describes the dangerous goods and that is most consistent with the class and the packing group determined by the criteria and tests must be selected as the shipping name. That shipping name and the corresponding data for that shipping name in Columns 1, 3, and 4 of Schedule 1 must be used as the classification of the dangerous goods.
On the other hand, if a substance meets the criteria for inclusion in more than one class or packing group, the substance is dangerous goods and its classification is determined in the following manner:
- The classes in which the dangerous goods are included are ranked in order of precedence in accordance with Section 2.8 to determine the primary class and the potential subsidiary class or classes;
- The potential packing group is the one with the lowest roman numeral;
- The shipping name in Column 2 of Schedule 1 that most precisely describes the dangerous goods and for which the corresponding data in Columns 1, 3, and 4 are the most consistent with the primary class, the potential subsidiary class or classes and the potential packing group are selected; and
- The shipping name and the corresponding data in Columns 1, 3, and 4 of Schedule 1 are used as the classification of the dangerous goods.