IMO codes

IMO International Maritime Dangerous Goods Code

These codes describe the equipment intended for carrying particular dangerous goods by sea.

Main equipment codes

IMO 1 — tank containers for dangerous goods

These containers are intended for carrying:

• Liquids with a flash point below 0 °C
• Certain highly hazardous toxic or corrosive substances
• Flammable materials (self-igniting)
• Goods dangerous when wet
• Oxidising substances
• Liquids whose working pressure does not exceed the maximum allowable working pressure of the shell

Note: aggressive or unstable cargo may require special vessels. An IMO 1 container may be fitted with top and bottom discharge.

IMO 2 — tank containers for non-hazardous goods

These containers are intended for carrying:

• Liquids with a flash point between 0 °C and 61 °C, without a subsidiary hazard
• Certain low-hazard toxic and corrosive substances

IMO 5 — tank containers for gases

These containers are intended for carrying:

• Gases liquefied under pressure.

IMO 0 — tank containers for food-grade cargo

These containers are intended for carrying:

• Non-hazardous food-grade cargo that does not require pressure discharge (milk, mineral water, vegetable oils, non-concentrated juices), with a capacity of 20,000 to 30,000 litres and a shell wall thickness of 2 mm.

Note: they may be fitted with thermal insulation and steam heating.