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1926.66(e) Fixed Electrostatic Apparatus
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Where installation and use of electrostatic spraying equipment is used, such installation and use shall conform to all other paragraphs of this section, and shall also conform to the requirements of this paragraph.
Electrostatic apparatus and devices used in connection with coating operations shall be of approved types.
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, shall be located outside of the spraying area, or shall otherwise conform to the requirements of paragraph (c) of this section.
Electrodes and electrostatic atomizing heads shall be adequately supported in permanent locations and shall be effectively insulated from the ground. Electrodes and electrostatic atomizing heads which are permanently attached to their bases, supports, or reciprocators, shall be deemed to comply with this section. Insulators shall be nonporous and noncombustible.
High-voltage leads to electrodes shall be properly insulated and protected from mechanical injury or exposure to destructive chemicals. Electrostatic atomizing heads shall be effectively and permanently supported on suitable insulators and shall be effectively guarded against accidental contact or grounding. An automatic means shall be provided for grounding the electrode system when it is electrically deenergized for any reason. All insulators shall be kept clean and dry.
A safe distance shall be maintained between goods being painted and electrodes or electrostatic atomizing heads or conductors of at least twice the sparking distance. A suitable sign indicating this safe distance shall be conspicuously posted near the assembly.
Goods being painted using this process are to be supported on conveyors. The conveyors shall be so arranged as to maintain safe distances between the goods and the electrodes or electrostatic atomizing heads at all times. Any irregularly shaped or other goods subject to possible swinging or movement shall be rigidly supported to prevent such swinging or movement which would reduce the clearance to less than that specified in paragraph (e)(6) of this section.
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 paragraph (f) of this section for applicable requirements.
Electrostatic apparatus shall be equipped 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:
Stoppage of ventilating fans or failure of ventilating equipment from any cause.
Occurrence of a ground or of an imminent ground at any point on the high voltage system.
Reduction of clearance below that specified in paragraph (e)(6) of this section.
Stoppage of the conveyor carrying goods through the high voltage field.
Adequate booths, fencing, railings, or guards shall be so placed about the equipment that they, either by their location or character or both, assure that a safe isolation of the process is maintained from plant storage or personnel. Such railings, fencing, and guards shall be of conducting material, adequately grounded.
Where electrostatic atomization is used the spraying area shall be so ventilated as to insure safe conditions from a fire and health standpoint.
All areas used for spraying, including the interior of the booth, shall be protected by automatic sprinklers where this protection is available. Where this protection is not available, other approved automatic extinguishing equipment shall be provided.
Related Code Sections
1926.66(e) Occupational Health and Environmental Controls, Fixed Electrostatic Apparatus
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A safe distance shall be maintained between goods being painted and electrodes or electrostatic atomizing heads or conductors of at least twice ...
OSHA 1926 Construction > D Occupational Health and Environmental Controls > 1926.66 Criteria for Design and Construction of Spray Booths > 1926.66(e) Fixed Electrostatic Apparatus > 1926.66(e)(6) Safe Distance
1926.66(e)(9) Occupational Health and Environmental Controls, Fail-Safe Controls
Electrostatic apparatus shall be equipped with automatic controls which will operate without time delay to disconnect the power supply to the high ...
OSHA 1926 Construction > D Occupational Health and Environmental Controls > 1926.66 Criteria for Design and Construction of Spray Booths > 1926.66(e) Fixed Electrostatic Apparatus > 1926.66(e)(9) Fail-Safe Controls
1926.66(e)(5) Occupational Health and Environmental Controls, Insulators, Grounding
High-voltage leads to electrodes shall be properly insulated and protected from mechanical injury or exposure to destructive chemicals. Electrostatic ...
OSHA 1926 Construction > D Occupational Health and Environmental Controls > 1926.66 Criteria for Design and Construction of Spray Booths > 1926.66(e) Fixed Electrostatic Apparatus > 1926.66(e)(5) Insulators, Grounding