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Minimize the fire and explosion hazards that can endanger the furnace, the building, or personnel. The 2015 edition of NFPA 86: Standard for Ovens and Furnaces provides the latest comprehensive requirements for the safe design; installation; operation; and inspection, testing, and maintenance of Class A, B, C, and D ovens, dryers, and furnaces; thermal oxidizers; and any other heated enclosure used for processing of materials and related equipment.