EN
n this paper a method is presented of determining – on the basis of information available in the preliminary phase of ship power plant design – the set of hazardous and noxious factors for the operator, as well as of converting them into the set of input variables to a hazardous zone identification system. Basing on the choice of values ofdetermined decision variables, the system’s user is able to determine potential hazardous zones for the ship power plant operator. Conversions of the determined factors into the set of the system’s input variables were performed by using the knowledge achieved from the side of experts in ship power plant designing and operating