ISO TC58 Gas Cylinders
Published International |
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Organization |
International Organization for
Standardization (ISO) |
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Committee |
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Identification |
ISO 11114-1 |
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Scope |
This standard provides
requirements for the selection of safe combinations of metallic cylinder and
valve materials and cylinder gas content. The compatibility data given is
related to single gases and to gas mixtures. Seamless metallic, welded
metallic and composite gas cylinders and their valves, used to contain
compressed, liquefied and dissolved gases, are considered. |
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Status |
Published March 2012. Amended
in 2017. |
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Identification |
ISO 11114-2 Gas Cylinders - Compatibility of cylinder and valve
materials with gas contents |
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Scope |
This standard gives guidance in the selection and
evaluation of compatibility between non-metallic materials for gas cylinders
and valves and the gas content. It also covers bundles, tubes and pressure
drums. |
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Status |
Published April 2013. |
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Identification |
ISO 11114-4 Gas Cylinders - Compatibility of cylinder
and valve materials with gas contents Part 4: Test methods for
selecting metallic materials resistant to hydrogen embrittlement |
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Scope |
ISO 11114-4:
2017 specifies test methods and the evaluation of results from these tests in
order to qualify steels suitable for use in the manufacture of gas cylinders
(up to 3 000 l) for hydrogen and hydrogen bearing embrittling gases. This document
only applies to seamless steel gas cylinders. The
requirements of this document are not applicable if at least one of the
following conditions for the intended gas service is fulfilled: - the working
pressure of the filled embrittling gas is less than 20 % of the test pressure
of the cylinder; - the partial
pressure of the filled embrittling gas of a gas mixture is less than 5 MPa
(50 bar) in the case of hydrogen and other embrittling gases, with the
exception of hydrogen sulphide and methyl mercaptan; in such cases, the
partial pressure shall not exceed 0,25 MPa (2,5 bar). NOTE In such
cases, it is possible to design the cylinder as for ordinary
(non-embrittling) gases. |
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Status |
Second edition published
in 2017. |
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