Which designation of approved power operated industrial trucks can be used in atmospheres in which combustible dust is present?

Which designation of approved power operated industrial trucks can be used in atmospheres in which combustible dust is present?

• A. DP
• B. EX
• C. GV
• D. LP

Answer: (B)

In environments with combustible dust, you must choose equipment that is specifically protected against ignition sources. The EX designation means explosion-protected equipment, designed to prevent internal ignition from lighting surrounding dust or to stop an ignition from escaping the truck into a dust-filled area. This protection is what lets the truck operate safely where dust could ignite. The other designations do not indicate explosion protection for combustible dust, so they don’t guarantee suitability for those atmospheres.

In environments with combustible dust, you must choose equipment that is specifically protected against ignition sources. The EX designation means explosion-protected equipment, designed to prevent internal ignition from lighting surrounding dust or to stop an ignition from escaping the truck into a dust-filled area. This protection is what lets the truck operate safely where dust could ignite. The other designations do not indicate explosion protection for combustible dust, so they don’t guarantee suitability for those atmospheres.