ÖNORM EN 286-3

1.1 This Part of this European Standard is applicable to simple unfired steel pressure vessels, referred to as "vessel" in this standard, designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock (see 1.6). It defines three types of vessel A, B and C (see table 1) corresponding to the current practice of European railway networks. 1.2 The vessels to this standard are: a) made from a single shell; b) made from non-alloy steel; c) fabricated by welding; d) used at a maximum working pressure of 10 bar; e) the product of the maximum working pressure (in bar) and the volume (in litre): 50 bar litres < PV <= 10 000 bar litres; f) made of a cylindrical p t of circular cross-section called the shell with two outwardly dished torispherical ends, that is two dished ends with the same axis of rotation. This standard therefore does not apply to vessels with one or two flat ends or those made up of several compartments; g) calculated with a design pressure P (see 5.1.4.1.2); h) designed for a working temperature of between -40 °C and +100 °C; j) fastened to the vehicles: 1) by straps for types A and B vessels; 2) by welded brackets for types B and C vessels. 1.3 In normal service, a momentary overpressure of 1 bar of the maximum working pressure is permitted (10 % of PS). 1.4 This Part of this European Standard applies to the vessel proper, from the inlet connection to the outlet connection and to all other connections and fittings belonging to the vessel.