Dust-producing equipment and dust-handling equipment, including but not limited to vacuums, dust collection systems, dryers, mixers, blenders, separators, conveyors, storage containers, silos, or other similar devices, shall be listed and shall be maintained in accordance with the manufacturer’s recommended standards.
2203.2.1 Signages and markings
Signages and markings shall be provided in accordance with Sections 2203.2.1.1 through 2203.2.1.3.
2203.2.1.1 Deflagration vent discharge area markings
Where dust collection systems and other equipment, systems or system components are PROVIDED WITH DEFLAGRATION VENTS, the area within the deflagration vent’s discharge area shall be marked in an approved manner.
2203.2.1.2 Caution signs
Signs that read as follows shall be posted near the dust-containing equipment WITH DEFLAGRATION VENTS:
CAUTION: THIS EQUIPMENT CAN CONTAIN EXPLOSIVE DUST.
KEEP OUTSIDE THE MARKED AREA WHILE EQUIPMENT IS OPERATING.
2203.2.1.3 Warning signs
Where dust collection systems and other equipment, systems, or system components are provided with DEFLAGRATION VENTS, vent closures shall be clearly marked as follows:
WARNING: EXPLOSION RELIEF DEVICE. STAY CLEAR.