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This International Standard is applicable to seamless steel and seamless aluminium-alloy transportable gas cylinders (single or those that comprise a bundle) intended for compressed and liquefied gases under pressure, of water capacity from 0,5 l up to 150 l and to seamless steel and seamless aluminium-alloy transportable gas tubes (single or those that comprise a bundle) intended for compressed and liquefied gases under pressure, of water capacity greater than 150 l. It also applies, as far as practical, to cylinders of less than 0,5 l water capacity.

This International Standard specifies the requirements for periodic inspection and testing to verify the integrity of such cylinders and tubes to be re-introduced into service for a further period of time.

This International Standard does not apply to periodic inspection and maintenance of acetylene cylinders or to the periodic inspection and testing of composite cylinders.

Unless noted by exception, the use of "cylinder" in this International Standard refers to both cylinders and tubes.

This document specifies the requirements for LPG propulsion systems on watercraft with hull lengths less than or equal to 24 m.

This document does not cover appliances with directly attached gas cylinders, such as portable self-contained camping stoves and portable gas lamps.

This part of ISO 15245 specifies definitions, dimensions and tolerances of parallel screw threads of nominal diameter 30 mm (designated 30P), 25 mm (designated 25P) and 18 mm (designated 18P), for the connection of valves to medical and industrial gas cylinders.

This part of ISO 15245 does not cover the connection requirements for:

— mechanical strength;

— gas tightness;

— capability of repeated assembly and dismounting operations1).

This document provides:

— for pure gases and some liquids, a complete list indicating their corrosiveness;

— for gas mixtures, a calculation method, in the absence of experimental data, relating to the corrosiveness of each of their components;

in order to determine the corrosiveness of gases and gas mixtures on tissue so that a suitable outlet connection can be assigned to each of them.

This document lists the best available acute-toxicity data of gases taken from a search of the current literature to allow the classification of gases and gas mixtures for toxicity by inhalation.