Ft diagram creation support apparatus and ft diagram creation support method

The event was classified into one of a failure of a hard failure and the system or control system, if the event is categorized as a failure of the hard, expand the event to the lower event said event and said get the physical quantity of the lower event, expansion of the event is verified or not correctly based on the relationship between the physical quantity of the lower event the physical quantity of the event, the event is classified as a failure of the system or the control system If the is to create a block diagram of the system or control system, deploying the event based on the input-output relationship of the block diagram of the system or control system in the lower event.