California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 7 - General Industry Safety Orders › Group 20 - Flammable Liquids, Gases and Vapors › Article 137 - Spray Coating Operations › Section 5455 - Electrostatic Hand Spraying Equipment

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) This Section shall apply to any equipment
						using electrostatically charged elements for the atomization, charging and (or)
						precipitation of materials for coatings on articles, or for other similar
						purposes in which the atomizing device is hand-held and manipulated during the
						spraying operation.
(b)
						Electrostatic hand spray apparatus and devices used in connection with coating
						operations shall be of approved types. The high voltage circuits shall be
						designed so as to not produce a spark of sufficient intensity to ignite the
						most hazardous of those vapor-air mixtures likely to be encountered, nor result
						in appreciable shock hazard upon coming in contact with a grounded object under
						all normal operating conditions.
(c) The electrostatically charged exposed
						elements of the hand gun shall be capable of being energized only by an
						actuator which also controls the coating material supply.
(d) Transformers, high voltage supply,
						control apparatus, and all other electrical portions of the equipment shall be
						located outside of the spraying area or shall otherwise conform to the
						requirements of Section
						5449.
EXCEPTION: The hand gun and its connections to the
						  power supply.
(e) The handle
						of the spray gun shall be electrically connected to ground by a metallic
						connection and be so constructed that the operator in normal operating position
						is in intimate electrical contact with the grounded handle to prevent buildup
						of a static charge on the operator's body. Signs indicating the necessity for
						grounding other persons entering the spraying area shall be conspicuously
						posted.
Whenever gloves are worn by the operator during
						  electrostatic hand spraying, the grounding contact between the operator and the
						  grounded handle of the spray gun shall be maintained.
(f) All electrically conductive objects in
						the spraying area shall be grounded. This requirement shall apply to paint
						containers, wash cans and any other electrically conductive objects or devices
						in the area. The equipment shall carry a prominent permanently installed
						warning regarding the necessity for this grounding feature.
(g) Objects being coated shall be maintained
						in electrical contact with the conveyor or other grounded support. Hooks shall
						be regularly cleaned to insure this contact and areas of contact shall be sharp
						points or knife edges where possible. Points of support of the object shall be
						concealed from random spray where feasible and where the objects being sprayed
						are supported from a conveyor, the point of attachment to the conveyor shall be
						so located as to not collect spray material during normal operation.
(h) The electrical equipment shall be so
						interlocked with the ventilation of the spraying area that the equipment cannot
						be operated unless the ventilation fans are in operation.
1.
						  Amendment filed 12-5-86; effective thirtieth day thereafter (Register 86, No.
						  51).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.