ISA 77.20-1993 (R2005)

Formerly S77.20-1993. Establishes the functional requirements for several types of fossil-fuel power plant control room simulators primarily used for operator training. Sets criteria for the degree of hardware replication and software modeling detail. Does not completely address stand-alone DCS-based trainers/simulators, or simulators used for engineering or test purposes. Does not establish criteria for the use of simulators in training programs.