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 296-24-37015 - Fixed electrostatic apparatus

Current through Register Vol. 24-14, July 15, 2024
(1)
Conformance.
Where installation and use of electrostatic spraying
				  equipment is used, such installation and use must conform to all other
				  requirements contained in WAC
				  296-24-370 through
				  296-24-37027.
(2)
Type approval.
Electrostatic
				  apparatus and devices used in connection with coating operations must be of
				  approved types.
(3)
Location.
You must locate transformers, power packs, control
				  apparatus, and all other electrical portions of the equipment, with the
				  exception of high-voltage grids, electrodes, and electrostatic atomizing heads
				  and their connections, outside of the spraying area, or they must otherwise
				  conform to the requirements of WAC
				  296-24-37005.
(4)
Support.
You must adequately
				  support electrodes and electrostatic atomizing heads in permanent locations and
				  you must effectively insulate them from the ground. Electrodes and
				  electrostatic atomizing heads which are permanently attached to their bases,
				  supports, or reciprocators, must be deemed to comply with this section.
				  Insulators must be nonporous and noncombustible.
(5)
Insulators, grounding.
You
				  must properly insulate and protect high-voltage leads to electrodes from
				  mechanical injury or exposure to destructive chemicals. You must effectively
				  and permanently support electrostatic atomizing heads on suitable insulators
				  and you must effectively guard them against accidental contact or grounding.
				  You must provide an automatic means for grounding the electrode system when it
				  is electrically deenergized for any reason. You must keep all insulators clean
				  and dry.
(6)
Safe
				  distance.
You must maintain a safe distance between goods being painted
				  and electrodes or electrostatic atomizing heads or conductors of at least twice
				  the sparking distance. You must conspicuously post a suitable sign indicating
				  this safe distance near the assembly.
(7)
Conveyors required.
Goods
				  being painted using this process are to be supported on conveyors. You must
				  arrange the conveyors so as to maintain safe distances between the goods and
				  the electrodes or electrostatic atomizing heads at all times. You must rigidly
				  support any irregularly shaped or other goods subject to possible swinging or
				  movement to prevent such swinging or movement which would reduce the clearance
				  to less than that specified in (6) of this section.
(8)
Prohibition.
This process is
				  not acceptable where goods being coated are manipulated by hand. When finishing
				  materials are applied by electrostatic equipment which is manipulated by hand,
				  see WAC 296-24-37017 for applicable
				  requirements. (Rev. 1-23-76)
(9)
Fail-safe controls.
You must equip electrostatic apparatus with
				  automatic controls which will operate without time delay to disconnect the
				  power supply to the high voltage transformer and to signal the operator under
				  any of the following conditions:
(a) Stoppage
				  of ventilating fans or failure of ventilating equipment from any
				  cause.
(b) Stoppage of the conveyor
				  carrying goods through the high voltage field.
(c) Occurrence of a ground or of an imminent
				  ground at any point on the high voltage system.
(d) Reduction of clearance below that
				  specified in (6) of this section.