Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-24 - General safety and health standards › Part E - HAZARDOUS MATERIALS, FLAMMABLE LIQUIDS, SPRAY FINISHING › Hazardous Materials › Section 296-24-37001 - Definitions

Current through Register Vol. 24-14, July 15, 2024
Aerated solid powders.
Aerated powders shall
					 mean any powdered material used as a coating material which shall be fluidized
					 within a container by passing air uniformly from below. It is common practice
					 to fluidize such materials to form a fluidized powder bed and then dip the part
					 to be coated into the bed in a manner similar to that used in liquid dipping.
					 Such beds are also used as sources for powder spray operations.
Approved.
Shall mean approved and listed by a
					 nationally recognized testing laboratory. Refer to federal regulation 29 CRF
					 1910.7 for definition of nationally recognized testing laboratory.
Dry spray booth.
A spray booth not equipped
					 with a water washing system as described in this section. A dry spray booth may
					 be equipped with (a) distribution or baffle plates to promote an even flow of
					 air through the booth or cause the deposit of overspray before it enters the
					 exhaust duct; or (b) overspray dry filters to minimize dusts; or (c) overspray
					 dry filters to minimize dusts or residues entering exhaust ducts; or (d)
					 overspray dry filter rolls designed to minimize dusts or residues entering
					 exhaust ducts; or (e) where dry powders are being sprayed, with powder
					 collection systems so arranged in the exhaust to capture oversprayed
					 material.
Electrostatic fluidized bed.
A container
					 holding powder coating material which is aerated from below so as to form an
					 air-supported expanded cloud of such material which is electrically charged
					 with a charge opposite to the charge of the object to be coated; such object is
					 transported through the container immediately above the charged and aerated
					 materials in order to be coated.
Fluidized bed.
A container holding powder
					 coating material which is aerated from below so as to form an air-supported
					 expanded cloud of such material through which the preheated object to be coated
					 is immersed and transported.
Listed.
See "approved" in this section.
Spray booth.
A power-ventilated structure
					 provided to enclose or accommodate a spraying operation to confine and limit
					 the escape of spray, vapor, and residue, and to safely conduct or direct them
					 to an exhaust system.
Spraying area.
Any area in which dangerous
					 quantities of flammable vapors or mists, or combustible residues, dusts, or
					 deposits are present due to the operation of spraying processes.
Waterwash spray booth.
A spray booth equipped
					 with a water washing system designed to minimize dusts or residues entering
					 exhaust ducts and to permit the recovery of overspray finishing
					 material.
Statutory Authority: Chapter 49.17 RCW. 88-23-054 (Order
						88-25), § 296-24-37001, filed 11/14/88; Order 76-6, § 296-24-37001,
						filed 3/1/76; Order 73-5, § 296-24-37001, filed 5/9/73 and Order 73-4,
						§ 296-24-37001, filed 5/7/73.