What is ISO 11119‑1 about?
ISO 11119 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 11119‑1 specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes, examination and testing at the time of manufacture for:
- Type 2 composite hoop wrapped cylinders or tubes with a load-sharing metal liner and composite reinforcement on the cylindrical portion only
- Water capacities up to 450 l
- The storage and conveyance of compressed or liquefied gases
- Cylinders and tubes with composite reinforcement of carbon fibre, aramid fibre or glass fibre (or a Mixture thereof) within a matrix or steel wire to provide circumferential reinforcement
- The minimum design life of 15 years
Note: ISO 11119‑1 does not address the design, fitting, and performance of removable protective sleeves.
Who is ISO 11119‑1 for?
ISO 11119‑1 on gas cylinders is useful for:
- Gas cylinder manufacturer
- Design engineer
- Quality check personnel
- Research and development facilities
Why should you use ISO 11119‑1?
Inside the cylinder the stored contents may be in a state of compressed gas, vapour over liquid, supercritical fluid, or dissolved in a substrate material, depending on the physical characteristics of the contents. The purpose of ISO 11119‑1 is to provide a specification for the design, manufacture, inspection and testing of cylinders for worldwide usage. The objective is to balance design and economic efficiency against international acceptance and universal utility.
ISO 11119‑1 eliminates the concern about climate, duplicate inspection and restrictions
currently existing because of lack of definitive International Standards and is not to be construed as reflecting on the suitability of the practice of any nation or region.
ISO 11119‑1 describes the hoop-wrapped gas cylinder that consists of an internal metal liner, which carries the total longitudinal load and a substantial circumferential load. Either a composite overwrap formed by layers of continuous fibres in a matrix, or a composite overwrap formed by steel wire reinforcement and an optional external protection system.
Using ISO 11119‑1 you can design, construct and test hoop-wrapped gas cylinders and tubes that are lightweight and seamlessly prevent any leakage.
What’s changed since the last update?
BS ISO 11119‑1:2020 supersedes BS ISO 11119‑1:2012. BS ISO 11119‑1:2020 includes some technical changes with respect to BS ISO 11119‑1:2012. These include:
- References updated.
- 7.1.3 Minimum fibre stress ratios added
- 8.5.8 Fire resistance test. Changes to the procedure to make the test more consistent. Adding criteria for tubes above 150 l to be tested for 5 min
- 8.5.10 Torque Test is now only required for taper threads
