scope:

This standard gives guidance on writing the technical specification for the procurement of processes and equipment for the removal of sulphur oxides from the flue gases of steam generating plant in the electrical power supply industry. This includes: - Wet, semi dry and dry systems - Systems to meet specific flue gas discharge requirements, for example sulphur content, particulate content and temperature - Systems with and without marketable by-products - Systems to meet specified waste product discharge limits - Systems to meet limitation of the type of absorbent and limitation of water consumption. Some of the provisions may be applicable to steam generating plant got other applications. The equipment covered by this guide is related to its function rather than design type. Therefore the flue gas desulphurisation (DeSo_x), plant requirements are stated in performance terms rather than being specified by a detailed description of the equipment to be supplied.