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The ship industry is field in the manufacture, repair, and design of ship. The ship industry, ship repairment may cause potential hazards which could impact on humans, both directly and indirectly. One of the dangers of ship repair is the hot working process which can cause fire or explosion. There are several potential dangers in the process including the electrical current, fire and welding smoke (fume). On the assessment of risk ranking of HIRARC with fuzzy approaches based on rule base on the rules AS / NZS 4360: 2004. On the level of risk is high and very high will be identification by the FTA method to determine the cause of the base of the accident, so it can do a precautions against accidents.