Which Hazard Division is Moderate Fire, No Significant Blast or Fragment?

Which Hazard Division is Moderate Fire, No Significant Blast or Fragment?

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

Answer: (D)

Understanding Hazard Divisions within Class 1 explosives helps you gauge how dangerous something is in a fire and whether it can cause a blast or throw fragments. The description “Moderate Fire, No Significant Blast or Fragment” specifically points to the category used for items with a minor explosion hazard—those that burn but are not expected to detonate or produce significant blast or fragmentation. This means the primary risk in a fire is the fire itself, not a large explosive blast. The other divisions describe scenarios with much greater blast or projection potential. A substance with a mass explosion hazard could detonate in a way that affects a large area; one with a projection hazard could send fragments flying; and some fire-hazard classifications imply more severe blast or fragmentation risks. Since the statement excludes significant blast or fragment risk and centers on a moderate fire hazard, it fits the minor explosion hazard category.

Understanding Hazard Divisions within Class 1 explosives helps you gauge how dangerous something is in a fire and whether it can cause a blast or throw fragments. The description “Moderate Fire, No Significant Blast or Fragment” specifically points to the category used for items with a minor explosion hazard—those that burn but are not expected to detonate or produce significant blast or fragmentation. This means the primary risk in a fire is the fire itself, not a large explosive blast.

The other divisions describe scenarios with much greater blast or projection potential. A substance with a mass explosion hazard could detonate in a way that affects a large area; one with a projection hazard could send fragments flying; and some fire-hazard classifications imply more severe blast or fragmentation risks. Since the statement excludes significant blast or fragment risk and centers on a moderate fire hazard, it fits the minor explosion hazard category.