Definitions (Canada)

Scope

Anyone using the TDGR must understand the words or terms used within the TDGR. The TDGR include sections that explain the definitions and terms to help users better understand the regulations.

Regulatory citations

• Transport Canada TDGR Part 1.4 — Definitions

Key definitions

• Act: The Transportation of Dangerous Goods Act, 1992.
• Classification: For dangerous goods, as applicable, is the shipping name, the primary class, the compatibility group, the subsidiary class, the UN number, the packing group, and the infectious substance category.
• Large means of containment: A means of containment with a capacity greater than 450 L.
• Small means of containment: A means of containment with a capacity less than or equal to 450 L.

Summary of requirements

Many times, misunderstanding concerning a particular part of a regulation can be attributed to a specific word that has not been clearly defined or is not clearly understood.

In Transport Canada’s TDG Regulations, definitions are alphabetically listed in Part 1. Just as the TDGR differ from the Hazardous Materials Regulations in 49 CFR, many of the key words in the TDG Regulations and their definitions differ from those found in 49 CFR 171.8 Definitions and abbreviations.