Abstract: A method and a system for simulating the conditions that are present during an air quality emergency occurring in a nuclear powered electrical generation plant. The system uses an apparatus which includes a continuous air monitor (C.A.M.) alarm simulator and chart recorder simulator. The C.A.M. alarm simulator comprises a beacon, a siren, an acknowledge button, an internal power source and a digital alarm control. The C.A.M. alarm simulator is capable of being programmed to activate at some predetermined time. The chart recorder simulator is comprised of a chart holder with a window formed therein. A chart indicating the simulated level of airborne nuclear radiation contamination is placed inside the chart holder so that it can be viewed though the window. The chart holder is placed in visual proximity to the C.A.M. alarm simulator. Simulating the air quality emergency comprises the following steps: At least one C.A.M.