Which Class 1 subcategory addresses fire hazard explosives?

• A. 1.3 Fire hazard explosives
• B. 1.1 Mass explosives
• C. 1.2 Projection explosives
• D. 1.5 Very insensitive explosives

Answer: (A)

In Class 1, which covers explosives, the subcategories describe the primary way the hazard can affect people and the environment. When the hazard is mainly a fire risk—explosives that may burn or contribute to a fire rather than causing a blast or projecting fragments—the appropriate subcategory is the one labeled as fire hazard explosives. That descriptor directly matches the scenario of explosives whose main concern is fire, rather than a mass detonation or fragment projection. The other subcategories describe different hazards: mass explosion (a wide-area detonation), projection (danger from fragments or the blast’s reach), and very insensitive explosives (extremely unlikely to detonate). So the option described as fire hazard explosives is the correct fit for this question.