This standard establishes the minimum functional requirements for full-scope nuclear power plant control room simulators used for operator training. Criteria are established for degree of simulation, performance, and functional capability of the simulated control room instrumentation and controls. This standard does not address simulators for test, mobile and research reactors, or reactors not subject to U.S. Nuclear Regulatory Commission licensing. Also excluded are part-task or limited scope simulators intended for specialized training or familiarization. This standard does not establish criteria for use of simulators in training programs. The training criterion is established in American National Standard for Selection, Qualification and Training of Personnel for Nuclear Power Plants, ANSI/ANS-3.1-1981.