scope:

This document specifies the requirements for the design, construction, testing and initial inspection of a transportable cylinder bundle. It is applicable to cylinder bundles containing cylinders or tubes not exceeding a water capacity of 450 l containing compressed gas, liquefied gas and mixtures thereof. Additional requirements for acetylene cylinder bundles containing acetylene in a solvent are provided in Annex B. This document does not, however, cover acetylene cylinder bundles with solvent‐free acetylene cylinders. Unless otherwise stated, individual cylinders or tubes not exceeding a water capacity of 450 l within a cylinder bundle will have to conform to applicable standards for single cylinders or tubes not exceeding a water capacity of 450 l. This document specifies the additional requirements that apply when individual cylinders or tubes not exceeding a water capacity of 450 l are assembled into a bundle. This document is intended primarily for industrial gases other than liquefied petroleum gas (LPG), but it may also be used for LPG. This document does not apply to packages in which cylinders or tubes not exceeding a water capacity of 450 l are manifolded together in a frame that is designed to be fixed permanently to a road vehicle, to a railway wagon or to the ground as a customer storage vessel. It also does not apply to cylinder bundles that are designed for use in extreme environmental or operational conditions (e.g. offshore cylinder bundles) when additional and extraordinary requirements are imposed to maintain safety standards, reliability and performance. NOTE - Unless noted by exception, the use of the word "cylinder" in this document refers to both cylinders and tubes.