Which division indicates mass explosion hazard (TNT)?

Which division indicates mass explosion hazard (TNT)?

• A. Division 1.1
• B. Division 1.2
• C. Division 1.3
• D. Division 1.4

Answer: (A)

Mass explosion hazard is indicated by Division 1.1. This means that if the material is initiated, it can produce a large blast that affects a mass portion of the charge—essentially a detonation that could cause widespread explosion effects. TNT is a classic example of this hazard level. The other divisions describe different explosion-related risks: Division 1.2 covers hazards from projecting fragments or other dangerous effects without a mass blast; Division 1.3 refers to materials that pose a fire hazard but do not involve significant blast or projection; Division 1.4 indicates a minor explosion hazard with little-to-no effect beyond the packaging.

Mass explosion hazard is indicated by Division 1.1. This means that if the material is initiated, it can produce a large blast that affects a mass portion of the charge—essentially a detonation that could cause widespread explosion effects. TNT is a classic example of this hazard level.

The other divisions describe different explosion-related risks: Division 1.2 covers hazards from projecting fragments or other dangerous effects without a mass blast; Division 1.3 refers to materials that pose a fire hazard but do not involve significant blast or projection; Division 1.4 indicates a minor explosion hazard with little-to-no effect beyond the packaging.