The shipper makes sure the large container has placards or that the driver is given any placards that are required. These should be attached to all four sides of the vehicle before the dangerous goods are loaded. If a large container is already placarded and loaded on a flatbed truck so the placards are visible, that may be all that’s needed. Otherwise, the vehicle must be placarded as well. When a full-size placard won’t fit, a smaller version can be used on the large container. The placards remain place until the container is completely empty of dangerous goods.
Please note that an over pack is any enclosure used to consolidate one or more small containers. It may be a larger box or even a shrink-wrapped pallet. If the safety marks cannot be seen the safety marks and the word OVERPACK must be shown. If the over pack is larger than 1.8 cubic metres (64 cubic feet or 4 ft X 4 ft X 4 ft) the marks must be shown on opposite sides. Boxes, creates and bins are often used to allow small containers to be removed and added during transport. The bin must indicate each class of dangerous goods it contains. Options may include labels or a list of the classes.
It’s not always easy to decide whether placards and UN numbers are required, when in doubt always follow the list of guidelines within the TDG guide.
Many shipments don’t require placards at all. Of course the small containers have to be labelled, but if the shipment doesn’t weigh more than 500 Kilograms, often the truck does not have to be placarded. For a shipment weighing more than 500 kilograms, you’ll need class placards, but probably not the UN number. For a load of over 500 kilograms that includes different dangerous goods, there’s an option to use the Dangerous placard instead of multiple class placards.
Share This Article
Subscribe to our RSS Feed. What is RSS?