Systematization and computarization of concepts related to system safety.

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This study systematizes concepts related to system safety. An emphasis is placed on causal concepts. Results are applied to a computerized fault tree generation, demonstrating effectiveness of the concept system. First, "flow" and "basic equipment" are considered and classified.Then, a block diagram and a semantic network representations are presented as a plant model. Event development knowledge is expressed as rules. A recursive algorithm is developed to generate a fault tree, based on the semantic model and the rules.