SEAMLESS STEEL GAS CYLINDERS
release time：2015-12-03 14:12 |
effective date：2015-12-03 14:59:29
1 This guideline is applicable to the works approval and post-approval unit/path inspection of refillable and portable seamless steel gas cylinders which are used for containing permanent gases such as oxygen, nitrogen, hydrogen, etc. or high-pressure liquefied gases such as carbon dioxide, etc., and have a nominal working pressure of8 MPa~30MPa, a nominal capacity of 0.5L~150L and a service environment temperature of -40 °C~60 °C.
2 This guideline is not applicable to the seamless steel gas cylinders used for containing dissolved gases and adsorbed gases and cylinder pressure vessels mounted as accessory on transport vehicles and machinery installations. Seamless steel gas cylinders are not to be used for containing the media having stress corrosion tendency.
3 Reference may be made to This guideline for seamless steel gas cylinders having a nominal capacity of 150L~500L.
4 Seamless steel gas cylinders having a working pressure greater than 30MPa are to be surveyed in accordance with the recognized standards (e.g. ISO 9809-2) and/or relevant technical protocols.
5 This guideline is in principle only applicable to the approval inspection of the body of seamless steel gas cylinders, exclusive of head valves.
6 This guideline is applicable to the seamless steel gas cylinders used on ships classed with CCS and reference may be made to This guideline for the seamless steel gas cylinders used on offshore installations.
7 This guideline is applicable to the initial approval and post-approval manufacturing inspection of seamless steel gas cylinders. The seamless steel gas cylinders in service are to be surveyed in compliance with the requirements of applicable international conventions and the competent state administration.
8 Upon the approval of CCS, seamless steel gas cylinders may be approved and surveyed in accordance with the standards acceptable to the state administration.
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