Special provision 396

Large and robust articles may be carried with connected gas cylinders with the valves open regardless of 4.1.6.5 provided: (a) The gas cylinders contain nitrogen of UN No. 1066 or compressed gas of UN No. 1956 or compressed air of UN No. 1002; (b) The gas cylinders are connected with the article through pressure regulators and fixed piping in such a way that the pressure of the gas (gauge pressure) in the article does not exceed 35 kPa (0.35 bar); (c) The gas cylinders are properly secured so that they cannot move in relation to the article and are fitted with strong and pressureresistant hoses and pipes; (d) The gas cylinders, pressure regulators, piping and other components are protected from damage and impacts during carriage by wooden crates or other suitable means; (e) The transport document includes the following statement “Transport in accordance with special provision 396”; (f) Cargo transport units containing articles carried with cylinders with open valves containing a gas presenting a risk of asphyxiation are well ventilated and marked in accordance with 5.5.3.6.”