Which hazard class/division has the potential for mass explosion?

Which hazard class/division has the potential for mass explosion?

• A. 1.2
• B. 1.1
• C. 1.3
• D. 1.4

Answer: (B)

Mass explosion means a single detonation of a large quantity that can cause widespread destruction over a wide area. This risk is the defining feature of Class 1 Division 1 explosives. Other divisions within Class 1 describe different hazard patterns: projection of fragments (not a mass blast), a fire hazard with only a minor blast, or very insensitive explosives that pose little hazard beyond the packaging. Because mass explosion describes a large-scale blast potential, the correct division is 1.1.

Mass explosion means a single detonation of a large quantity that can cause widespread destruction over a wide area. This risk is the defining feature of Class 1 Division 1 explosives. Other divisions within Class 1 describe different hazard patterns: projection of fragments (not a mass blast), a fire hazard with only a minor blast, or very insensitive explosives that pose little hazard beyond the packaging. Because mass explosion describes a large-scale blast potential, the correct division is 1.1.