This document specifies the requirements for periodic inspection and testing and to verify the integrity for further service of hoop-wrapped and fully wrapped composite transportable gas cylinders and tubes, with aluminium-alloy, steel or non-metallic liners or of linerless construction (Types 2, 3, 4, and 5), intended for compressed, liquefied or dissolved gases under pressure, of water capacity from 0,5 l up to 3 000 l. This document is written to address the periodic inspection and testing of composite cylinders and tubes constructed to ISO 11119-1, ISO 11119-2, ISO 11119-3, ISO 11119-4 and ISO 11515 standards and can be applied to other composite cylinders and tubes designed to comparable standards when authorized by the competent authority. As far as practicable, this document also can be applied to cylinders of less than 0,5 l water capacity when authorized by the manufacturer. NOTE Unless noted by exception, the use of the word cylinder in this document refers to both cylinders and tubes.