The Carriage of Dangerous Goods by Rail Regulations 1996

Gases: compressed, liquefied or dissolved under pressure (classification code 2)

3.—(1) Receptacles containing GASES: COMPRESSED, LIQUEFIED OR DISSOLVED UNDER PRESSURE shall be stowed in large containers or wagons in compliance with the following requirements—

(a) cylinders with a capacity not exceeding 150 litres shall be laid parallel to or at right angles to the longitudinal axis of the large container or wagon, except that those situated near the end walls shall be laid at right angles to the said axis;

(b) short cylinders of diameter of 30 centimetres or over may be stowed longitudinally with their valve protective devices directed towards the middle of the large container or wagon;

(c) cylinders which are sufficiently stable or which are carried in suitable devices which prevent them from overturning may be placed upright;

(d) cylinders which are laid flat shall be so wedged, made fast or otherwise suitably and securely fixed that they cannot shift;

(e) receptacles containing any of the following goods shall always be placed in the position for which they were designed and protected against any possibility of being damaged by other packages—

• ARGON

• CARBON DIOXIDE

• HELIUM

• KRYPTON

• NEON

• NITROGEN

• NITROUS OXIDE N₂O (oxidizing)

• OXYGEN (oxidizing)

• XENON

• Any mixture of the goods above

• AIR

(f) receptacles designed to be rolled shall be laid with their longitudinal axis parallel to that of the large container or wagon and shall be secured against any lateral movement.

(2) Where pallets loaded with metal aerosol dispensers (grouped together in units on trays and sealed with a suitable plastic wrapping) are stacked, each tier of pallets shall be evenly distributed over the lower tier, if necessary by the interposition of a material of adequate strength.