scope:

This Part of this European Standard applies to the design and manufacture of simple unfired serially made pressure vessels with a single compartment, here-in-after referred to as vessels, the essential safety requirements of which are given in annex G and which: (a) include fabrication by welding, but some designs can entail the use of bolts; (b) have a simple geometry enabling simple-to-use production procedures. This is achieved by either: (1) a cylindrical part of circular cross section closed by outwardly dished and/or flat ends which revolve around the same axis as the cylindrical part; or (2) two outwardly dished ends revolving around the same axis; (c) have branches not larger in diameter than 0,5 of the diameter of the cylinder to which they are welded. It applies to vessels which are intended to contain air or nitrogen which are not intended to be fired and which operate within the following constraints: (a) subjected to an internal gauge pressure greater than 0,5 bar; (b) the parts and assemblies contributing to the strength of the vessel under pressure to be made either of non-alloy quality steel or non-alloy aluminium or non-age hardening aluminium alloys; (c) maximum working pressure 30 bar. The product of that pressure and the capacity of the vessel (PS.V) is greater than 50 bar litres and not exceeding 10000 bar litres; (d) minimum working temperature -50 ° C and maximum working temperature not higher than 300 ° C for steel and 100 ° C for aluminium or aluminium alloy vessels. It does not apply to vessels specifically designed for nuclear use, to vessels specifically intended for installation in or the propulsion of ships and aircraft, or to fire extinguishers.