scope:

Gives guidance on writing the technical specification for the procurement of gas turbines, including gas turbines for combined-cycle systems, and their auxiliaries for use in in electricity generating stations (power stations). 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. The guide is applicable to open-cycle gas turbines using normal combustion systems, generally greater than 20 MW electrical output, and also includes closed-cycle, semi closed-cycle and combined-cycle gas turbine power plants and combined heat power plants. In cases of turbines using free piston gas generators or special heat sources (for example, chemical process, nuclear reactors, furnace for a super-charged boiler), this Guide may be used as a basis but will need to be suitably modified.