scope:

This standard is applicable to open-cycle gas turbine power plants using normal combustion systems and also includes closed-cycle, semi closed-cycle and combined-cycle gas tubrine 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 Standard may be used as a basis but will need to be suitably modified. This standard excludes gas turbines used to propel aircraft, road construction and earth-moving machines, agricultural and industrial types of tractors and road vehicles. This standard is applicable to procurement of open-cycle gas turbine power plants using normal combustion systems > 20 MW Electrical Output and also includes closed-cycle, semi closed-cycle combined-cycle gas turbine power plants and combined heat and power plants. The plant ratings should be made on the basis of the ISO standard ambient reference conditions.