Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › Construction Safety and Health Standard › Part 18 - FIRE PROTECTION AND PREVENTION › TEMPORARY HEATING DEVICES › Section R. 408.41884 - Heating devices

Current through Vol. 24-12, July 15, 2024
Rule 1884.
(1)
						Fresh air shall be supplied in sufficient quantities to maintain the health and
						safety of workmen. Where natural means of fresh air supply is inadequate,
						mechanical ventilation shall be provided.
(2) When heaters are used in confined spaces,
						special care shall be taken to provide sufficient ventilation in order to
						ensure proper combustion, maintain the health and safety of workmen, and limit
						temperature rise in the area.
(3) A
						temporary heating device shall not be located less than 50 feet from a point
						where a flammable liquid is used or dispensed.
(4) A temporary heating device that is set on
						a combustible floor shall be separated from the floor by an insulating material
						or 1 inch of concrete. The insulating material shall extend not less than 2
						feet beyond the heater in all directions.
(5) A temporary heating device shall be
						located not less than 10 feet from a combustible covering, such as, but not
						limited to, canvas or tarpaulins, unless the covering is fastened to prevent
						its dislodgement due to wind action.
(6) A temporary heating device using L.P.
						gas, other than in an integral heater-container unit, shall be located not less
						than 6 feet from any L.P. gas container.
(7) Integral heaters may be used if designed
						and installed so as to prevent direct or radiant heat application to the
						container.
(8) Blower-and
						radiant-type units shall not be directed toward any L.P. gas container that is
						less than 20 feet away.
(9) If 2 or
						more heater units are located within the same unpartitioned area, then the
						containers of each unit shall be separated from the containers of any such
						other unit by not less than 20 feet.
(10) If containers are manifolded together
						and serve 1 heater on the same floor, then the total water capacity of the
						containers shall not be more than 735 pounds (nominal 300 pounds L.P. gas
						capacity). If more than 1 such manifold is used they shall be separated by not
						less than 20 feet.
(11) Heating
						devices, including portable heaters and salamanders using a liquid flammable
						fuel such as, but not limited to, fuel oil or kerosene, shall be equipped with
						an approved automatic shutoff safety control device which will, in the event of
						flame failure, shut off the flow of fuel to the main burner and pilot if used.
						The device shall not be relit while the combustion chamber is hot.
(12) Portable heaters including salamanders
						shall be equipped with an approved automatic device to shut off the flow of gas
						to the main burner, and pilot if used, in the event of flame failure. Such
						heaters, having inputs above 50,000 British thermal unit's (B.T.U.) per hour,
						shall be equipped with either a pilot, that is lighted and proved before the
						main burner can be turned on, or an electric ignition system.
NOTE: The provisions of this rule do not apply to tar
						  kettles, hand torches, melting pots, or portable heaters of less than 7,500
						  British thermal unit's (B.T.U.), if used with 2 1/2 pound containers.
(13) A temporary heating device
						shall be installed horizontally level.
(14) A solid fuel salamander shall not be
						used in a building or on a scaffold.
(15) L.P. gas containers valves, connectors,
						regulators and manifolds, piping, and tubing shall not be used as structural
						supports for heaters and shall be located to minimize exposure to high
						temperatures or physical damage.
(16) A heating device, including a temporary
						heating device, designed for barometric or gravity oil feed shall be used only
						with an integral tank.
(17) Heaters
						specifically designed and approved for use with separate supply tanks may be
						connected for gravity feed, or an automatic pump, from a supply tank.
(18) Heating equipment of an approved type
						may be installed in the lubrication or service area where there is no
						dispensing or transferring of category 1, 2, or 3 flammable liquids, provided
						the bottom of the heating unit is at least 18 inches above the floor and is
						protected from physical damage.
(19) Heating equipment installed in
						lubrication or service areas, where category 1, 2, or 3 flammable liquids are
						dispensed, shall be of an approved type for garages and shall be installed at
						least 8 feet above the floor.