What is ISO 10961 - Gas cylinders about?
ISO 10961 is a series on gas cylinders. A gas cylinder is a pressure vessel for the storage and containment of gases at above atmospheric pressure. ISO 10961 specifies the requirements for the design, construction, testing and initial inspection of a transportable cylinder bundle. ISO 10961 is applicable to cylinder bundles containing cylinders containing compressed gas, liquefied gas, and mixtures thereof. ISO 10961 is also applicable to cylinder bundles for acetylene. Additional requirements for acetylene cylinder bundles containing acetylene in a solvent are provided in ISO 10961.
ISO 10961 specifies the additional requirements that apply when individual cylinders are assembled into a bundle. Unless otherwise stated, individual cylinders within a cylinder bundle conform to applicable standards for single cylinders. ISO 10961 is intended primarily for industrial gases other than liquefied petroleum gas (LPG), but it can also be used for LPG.
Note 1: ISO 10961 does not, however, cover acetylene cylinder bundles with solvent‐free acetylene cylinders.
Note 2: ISO 10961 does not apply to packages in which cylinders 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.
Note 3: ISO 10961 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.
Who is ISO 10961 - Gas cylinders for?
ISO 10961 on the gas cylinder is useful for:
- Gas cylinder manufacturers
- Design engineers
- Quality control personnel
- Transport facilities for LPG
Why should you use ISO 10961 - Gas cylinders?
A typical gas cylinder design is elongated, standing upright on a flattened bottom end, with the valve and fitting at the top for connecting to the receiving apparatus. For some applications, the contents of an individual gas cylinder might not satisfy the gas demand, in which case assemblies of cylinders can be used to supply larger volumes of gas in a single unit. The single unit, which contains a number of cylinders, is known as a cylinder bundle. ISO 10961 discusses a cylinder bundle that is a portable assembly, designed to be routinely lifted, that consists of a frame and two or more cylinders connected to a manifold by cylinder valves or fittings so that the cylinders can be filled, transported, and emptied without disassembly. A cylinder bundle can be subjected to rough handling in the course of normal operations.
There are types of gas cylinder assemblies that use cylinder bundle components but are designed to be disassembled at each filling to enable the cylinders to be filled individually. Although these assemblies do not conform to the basic definition of a cylinder bundle, they are commonly referred to as bundles. Their special requirements are provided in ISO 10961. Acetylene cylinder bundles are often filled without disassembly. The confirmation of solvent content can be achieved with or without disassembling the bundle. Replenishing of solvent is usually done after a defined number of fillings. Their special requirements are provided in ISO 10961. Using ISO 10961 you can specify the requirements for the design, construction, testing and initial inspection of a transportable cylinder bundle.
What’s changed since the last update?
BS EN ISO 10961:2019 supersedes BS EN ISO 10961:2012. BS EN ISO 10961:2019 includes some technical changes with respect to BS EN ISO 10961:2012. These include:
- The terminology was brought in line with ISO 10286, as far as possible
- Storage was added throughout the document as a possible use case
- The descriptions of the drop tests were clarified
- The descriptions of the leak tests were clarified
- A new figure was added showing the angle for the vertical drop test