Lesson 1, Topic 1
In Progress

UN Number


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TDGR 4.15.2 UN numbers, except for Class 1, Explosives, must be displayed on a large means of containment if the dangerous goods

     (a) are in a quantity or concentration for which an ERAP is required; or

     (b) are a liquid or a gas in direct contact with the large means of containment.

TDGR 4.8 (2) allows for the UN number to displayed in the following ways:
     (a) on an orange panel placed next to the primary class placard for the dangerous goods, without the prefix “UN”; or
     (b) within a white rectangle located on the primary class placard for the dangerous goods, without the prefix “UN”, but it must not obscure the symbol, class number, compatibility group letter or text on the placard

OR