This part 2 of this standard applies to the design, fabrication, inspection and testing of large transportable vacuum insulated cryogenic vessels of more than 1000 litres volume, which are permanently (fixed tanks) or not permanently (demountable tanks) attached to a vehicle, for carriage by road. This part applies to large transportable non vacuum insulated cryogenic vessels for fluids specified in part 1 of this standard and is not applicable to vessels designed for toxic fluids.