A ___ location is a location in which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment.

A ___ location is a location in which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment.

• A. Class I, Division 1
• B. Class I, Division 2
• C. Class II, Division 1
• D. Class II, Division 2

Answer: (B)

The main idea is hazardous location classification for flammable substances. The description fits a Class I location (gases or vapors) where the hazard is present only under abnormal conditions because the liquids, vapors, or gases are normally confined in closed containers or systems and would only escape if a rupture or equipment failure occurs. That makes it Class I, Division 2. The other options don’t fit because this involves gases or vapors (not dust, which is Class II), and the hazard is not present during normal operation (which would be Division 1).

The main idea is hazardous location classification for flammable substances. The description fits a Class I location (gases or vapors) where the hazard is present only under abnormal conditions because the liquids, vapors, or gases are normally confined in closed containers or systems and would only escape if a rupture or equipment failure occurs. That makes it Class I, Division 2. The other options don’t fit because this involves gases or vapors (not dust, which is Class II), and the hazard is not present during normal operation (which would be Division 1).