scope:

Gives guidance on writing the technical specifications for the procurement of feedwater heaters for use in electricity generating stations (power stations). This Guide for procurement is not applicable to equipment for use in the nuclear reactor plant area of nuclear power stations. Other possible applications of such equipment have not been considered in the preparation of this Guide. This Guide covers surface feedwater heaters installed in power plants and used to heat the main condensate and feedwater to be supplied to the steam producing system. Shell and tube feedwater heaters are included in this Guide, while direct contact fedwater heaters are covered by a separate guide (see EN 45510-6-1). Feedwater heaters may or may not have a separate or internal drain cooler or desuperheater. The feedwater heaters heating the main condensate are low pressure (LP) and those heating the deedwater are high pressure (HP) feedwater heaters.