Los Angeles County Municipal Code § 2203.4 Fire Code

Artificial lighting in areas containing dust-producing or dust-agitating operations shall be by electricity with wiring and electrical equipment installed in accordance with the Electrical Code. Machinery and metal parts of crushing, drying, pulverizing, and conveying systems shall be electrically grounded in accordance with the Electrical Code.

Bonding and grounding is required to minimize accumulation of static electric charge in the following locations:

Dust-producing equipment.

Dust-collection system.

Pneumatic dust-conveying systems conveying combustible dust from one location to another, combustible dust conveyors, piping and conductive components. Conveying systems include transport modes such as railcars, hopper cars, boxcars, tank cars and trucks into which or from which commodities or products are pneumatically conveyed.

Conveying systems using metallic piping.

Static electricity shall be removed from machinery and other component parts by permanent grounds or bonds or both. The design and installation of such grounds shall be in accordance with approved standards.

Approved means, such as magnetic or pneumatic separators, shall be installed ahead of shellers, crackers, crushers, grinding machines, pulverizers, and similar machines in which the entrance of foreign materials could cause sparks to be generated.

2404 - SPRAY FINISHING