2420 TDG

Question 1

Where is most of the responsibility for TDG placed?

Answer 1

Employers and workers that :

• prepare dangerous goods for transport
• operate transport vehicles containing dangerous goods
• receive dangerous goods
• respond to emergencies involving dangerous goods

Question 2

Who “owns” TDG law and enforcement?

Answer 2

Transport Canada, just like Health Canada “owns” WHMIS.

Question 3

What are the classes of dangerous goods?

Answer 3

9 classes:

Class 1
Explosives, including explosives within the meaning of the Explosives Act
Class 2
Gases; compressed, deeply refrigerated, liquefied or dissolved under pressure
Class 3
Flammable and combustible liquids
Class 4
Flammable solids; substances liable to spontaneous combustion; substances that on contact with water emit flammable gases
Class 5
Oxidizing substances; organic peroxides
Class 6
Poisonous (toxic) and infectious substances
Class 7
Radioactive materials and radioactive prescribed substances within the meaning of the Atomic Energy Control Act
Class 8
Corrosives
Class 9
Miscellaneous products, substances or organisms considered by the Governor-in-Council to be dangerous to life, health, property or the environment when handled, offered for transport or transported and prescribed to be included in this class

Question 4

What is a dangerous good according to the TDG Act?

Answer 4

Any product, substance or organism included by it’s nature or the regulation in any of the 9 classes in the TDG Act schedule.

Question 5

Discuss safety marks and placards.

Answer 5

Safety marks must be on smaller dangerous goods containers under 450L.
Placards must be on bulk containers of dangerous goods over 450L.
Transport units (highway tanker) transporting dangerous goods must be placarded. - this alerts first responders. (not required on ships/aircraft)

Question 6

Who requires TDG training?

Answer 6

Every person engaged in the handling, offering transport, or transporting dangerous goods.

Handling includes packing and receiving goods.

Question 7

What must accompany dangerous goods when transported?

Answer 7

Very specific documents and signs/placards as appropriate.

Question 8

What is required for TDG documents?

Answer 8

Documents must be transported with dangerous goods and include the following 4 pieces of information.

• UN ID number
• Official shipping name
• Hazard class
• Packing Group (if applicable)

Employers can design own documents, and can be hand written so long as required information is clear and indelible.

Question 9

What information SHOULD be included on TDG documents?

Answer 9

9 items:

• Date
• Shipper name
• Shipper address
• 24 emergency number (which may be CANUTEC)
• Quantity & unit of measure
• Number of packages
• Shipping name (the TDG name of the dangerous good)
• TDG class
• UN number

Question 10

Where should TDG documents be stored during transit?

Answer 10

Somewhere clear/obvious, and easily/safely accessible to the driver.
Must be accessible in the event of an accident.

Question 11

Discuss TDG Placards

Answer 11

Required on containers with over 450L.
Required on transport vehicles, on both ends and both sides.
Must be in TDG class colour, in a diamond, with contrasting background.
Must usually be 250mm per side, unless on small container when can be reduced to min’ 100mm.
Must be weather-proof, visible, and durable.
Must be on vehicle before loading and removed when empty.

Question 12

What are UN specification codes?

Answer 12

United Nations standard packaging codes.
Packaging with these codes is based on standards published by the UN.
The code includes a lot of information about the packaging.

Question 13

What are the three major groups assigned roles by TDG law?

Answer 13

Handlers
Offerors for transport
Carriers