New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 12 - Control Of Air Contaminants › Subpart 12-2 - Specific Operations And Specific Control Requirements › Section 12-2.10 - Industrial products coating

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
					 Where performed. Coating shall be conducted in a ventilated hood, booth or
					 enclosure complying with this Part (rule) and section 18.20 of Industrial Code
					 Part (Rule No.) 18.
(b) Vehicles.
					 Vehicles shall not be taken into or out of spray coating spaces under their own
					 power, unless the exhaust system is operating.
(c) Use of different types of coating
					 materials. Where different types of coating materials are used in the same
					 booth or space, the booth or space shall be thoroughly cleaned of previous
					 coating deposits before commencing the application of the new
					 substance.
(d) Sanding. Sanding of
					 surfaces containing lead or lead pigment shall be done either with sandpaper
					 wetted with water or in an area provided with an exhaust system providing
					 ventilation at a minimum rate of 150 f.p.m. in the breathing zone of the
					 worker.
(e) Cleaning of hoods and
					 booths. Exhaust fans and the interior of hoods, booths and ducts shall be
					 maintained free of accumulations of coating material.
(f) Lining of spray booths. Material for
					 lining of spray booths or hoods, if used, shall cover the inner sides of the
					 booth or hood without overhanging and shall be maintained in contact with the
					 walls of the booth or hood. Loose sections shall be removed or shall be
					 reapplied to the wall surface.
(g)
					 Forced drying and baking.
(1) Construction.
					 Ovens, cabinets, other enclosures and duct work used for forced drying or
					 baking systems shall be constructed of incombustible material with expansion
					 joints provided in the oven framing. Duct work shall be provided with two
					 inches clearance or three-fourths inch of incombustible rigid insulation where
					 the duct work passes through combustible walls, floors or roofs. The
					 temperature of surfaces in contact with walls, floors or roofs shall not exceed
					 160 degrees Fahrenheit. The floor surface of the oven shall be of incombustible
					 material and extend at least one foot beyond the oven outline. Interior suraces
					 shall be smooth.
(2) Ventilation.
(i) Ovens, cabinets and other enclosures used
					 for such purpose shall be provided with mechanical ventilation to maintain the
					 concentration of flammable vapors below 25 percent of the lower explosive level
					 at all times. Ovens shall be exhausted mechanically so that an inward air flow
					 shall be maintained through all openings to prevent escape of dangerous air
					 contaminants. The fans of such exhaust ventilating and any recirculating
					 systems shall be interlocked to the heat supply by means of approved air flow
					 switches, so that the heat supply shall be cut off unless the fan maintains the
					 required air flow. Conveyors shall be interlocked with the oven exhaust and any
					 recirculating fans so that the conveyors cannot operate unless such fans are
					 operating.
(ii) When persons are
					 required to enter the drying enclosure, the concentration of air contaminants
					 shall be maintained below the danger level by mechanical ventilation.
(3) Explosion vents. Ovens located
					 inside buildings and in which flammable vapors or combustible gases may be
					 present in amounts exceeding 25 percent of the lower explosive level shall be
					 equipped with explosion relief panels to relieve internal explosion pressures.
					 Such vents shall provide an unobstructed aggregate area of one square foot of
					 panel opening to each 15 cubic feet of oven volume, allowance being made for
					 access openings and doors arranged to yield easily to internal pressure. Relief
					 panels shall, if practicable, be located in the top of the enclosure and be
					 made of material other than glass, which shall yield easily to internal
					 pressure. On long ovens, relief panels shall be distributed to provide
					 effective explosion relief. Relief panels shall be located and arranged so as
					 not to create a hazard to employees or to other work spaces. Panel edges shall
					 be maintained free of condensate and other solid material to insure proper
					 operation.
(4) Controls.
(i) Fan switches shall be interlocked with
					 the fuel valve through a time delay arrangement to assure proper
					 pre-ventilation before the fuel is ignited. Where necessary, enclosure doors
					 shall have a limit switch interlock to prevent the time delay relay from
					 operating unless the enclosure doors are open.
(ii) The fuel supply line shall be provided
					 with a pressure switch to shut off the fuel supply when the fuel supply
					 pressure is insufficient. The switch shall not reopen the fuel valve
					 automatically.
(iii) An excess
					 temperature limit switch shall be provided to cut off the fuel supply when oven
					 temperature exceeds the safe limit. The switch shall not reopen the fuel valve
					 automatically.
(iv) Combustion
					 safeguards shall be provided to shut off the fuel supply in the event of pilot
					 light or ignition failure.
(5) Dampers. Air supply or exhaust volume
					 control dampers shall be adjusted properly and fixed securely. Dampers shall be
					 designed to prevent full closure.
(6) Combination booths. Where coating and
					 forced drying are done alternately in the same booth or enclosure, the
					 following requirements shall be complied with:
(i) During coating operations, the drying
					 apparatus and electrical connections and wiring thereto shall not be located
					 within the coating enclosure nor in any location where coating residue may be
					 deposited thereon.
(ii) Coating
					 apparatus, drying apparatus and ventilating system of the coating enclosure
					 shall be equipped with suitable approved interlocks so arranged that coating
					 apparatus cannot be operated while drying apparatus is inside the coating
					 enclosure and the coating enclosure shall be purged of coating vapors for a
					 period of not less than three minutes before drying apparatus can be energized;
					 the ventilating system shall continue in operation during the drying process
					 and in the event of failure of the ventilating system, the drying apparatus
					 shall shut off automatically.
(7) Cleaning. The inside surfaces of the
					 drying enclosure shall be maintained clean. Cleaning tools shall be of
					 nonferrous material.