This European Standard specifies the procedures to be adopted when checking transportable refillable LPG cylinders before, during and after filling. This European Standard applies to transportable refillable LPG cylinders of water capacity from 0,5 l up to and including 150 l. This European Standard does not apply to cylinders permanently installed in vehicles, or to plant and filling equipment. This 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 an equivalent standard); welded steel LPG cylinders without specified minimum wall thickness (see EN 14140 or an equivalent standard); welded aluminium LPG cylinders (see EN 13110 or an equivalent standard); composite LPG cylinders (see EN 14427 or an equivalent standard). Specific requirements for different types of cylinders are detailed in Annex A, Annex B, Annex C and Annex D. NOTE Rejection limits for a particular type of protected cylinder are given in Annex G. This standard is intended to be applied to cylinders complying with ADR (including pi marked cylinders) and also to existing non ADR cylinder populations.