Heating systems.

CFR · 2024-01-01 · US · Title 14

(a) (b) (1) Of suitable materials; (2) Adequately cooled under all conditions; and (3) Easily disassembled for inspection. (c) (1) Approved, quick-acting fire detectors in numbers and locations ensuring prompt detection of fire in the heater region. (2) Fire extinguisher systems that provide at least one adequate discharge to all areas of the heater region. (3) Complete drainage of each part of each zone to minimize the hazards resulting from failure or malfunction of any component containing flammable fluids. The drainage means must be— (i) Effective under conditions expected to prevail when drainage is needed; and (ii) Arranged so that no discharged fluid will cause an additional fire hazard. (4) Ventilation, arranged so that no discharged vapors will cause an additional fire hazard. (d) (1) Unless isolation is provided by fireproof valves or by equally effective means, the ventilating air duct downstream of each heater must be fireproof for a distance great enough to ensure that any fire originating in the heater can be contained in the duct. (2) Each part of any ventilating duct passing through any region having a flammable fluid system must be so constructed or isolated from that system that the malfunctioning of any component of that system cannot introduce flammable fluids or vapors into the ventilating airstream. (e) (1) No combustion air duct may connect with the ventilating airstream unless flames from backfires or reverse burning cannot enter the ventilating airstr

official document · source cfr-2024 · id 14:§ 27.859