scope:

This standard gives guidance on writing the technical specification for the procurement of water tube boilers for the production and reheat of steam associated with the generation of electricity in the electrical power supply industry. This includes water tube boilers: Using solid, liquid or gaseous fuels and for heat recovery. With pulverised fuel, stoker or cyclone firing, gas oil firing. With once through or recirculation evaporators. With natural or assisted evaporator recirculation. With balanced-draught or pressurised draught plant systems. With specific direction of gas flow over the heating surface e.g. vertically upward, horizontal or a combination. Some of the provisions may be applicable to steam generating plant and hot water plant for other applications.