29 CFR § 1926.431
Maintenance of equipment
July 28, 2023
§ 1926.431 Maintenance of equipment.
The employer shall ensure that all wiring components and utilization equipment in hazardous locations are maintained in a dust-tight, dust-ignition-proof, or explosion-proof condition, as appropriate. There shall be no loose or missing screws, gaskets, threaded connections, seals, or other impairments to a tight condition.