This European Standard specifies methods for the safe gas freeing and disposal of refillable LPG cylinders manufactured from steel, composite materials and aluminium, of water capacity 0,5 litres up to and including 150 litres. This European Standard is applicable to the following: welded and brazed steel LPG cylinders with a specified minimum wall thickness (see EN 1442 and EN 12807 or equivalent standard); welded steel LPG cylinders without specified minimum wall thickness (see EN 14140 or equivalent standard); welded aluminium LPG cylinders (see EN 13110 or equivalent standard); composite LPG cylinders (see EN 14427 or equivalent standard). This European Standard is intended to be applied to cylinders complying with ADR (including pi marked cylinders) and also to existing non ADR cylinder populations.