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The U.S. government now uses the United Nations explosives shipping classification system, which is based on hazard in shipping only, while the old US system also covered use hazards. The BATFE and most states performed a direct substitution of Shipping Class 1.3 for Class B , and Shipping Class 1.4 for Class C .
[a] [1] [2] The system describes the classification of explosives, divisions within that class that describe the type of hazard they present and compatibility groups that identify the specific type of explosive substance, and what articles are compatible for transport and storage.
1.1 — Explosives with a mass explosion hazard. (nitroglycerin/dynamite, ANFO) 1.2 — Explosives with a blast/projection hazard. 1.3 — Explosives with a minor blast hazard. (rocket propellant, display fireworks) 1.4 — Explosives with a major fire hazard. (consumer fireworks, ammunition) 1.5 — Blasting agents.
X: Indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. 1: An explosive from compatibility group L shall only be carried on the same transport vehicle with an identical explosive. 2: Any combination of explosives from compatibility groups C, D, or E is assigned to compatibility group E.
Division 4.1: Flammable Solid . Flammable solids are any of the following four types of materials: Desensitized Explosives: explosives that, when dry, are Explosives of Class 1 other than those of compatibility group A, which are wetted with sufficient water, alcohol, or plasticizer to suppress explosive properties; and are specifically authorized by name either in the 49CFR 172.101 Table or ...
1.2 Explosives with a severe projection hazard. 1.3 Explosives with a fire, blast or projection hazard but not a mass explosion hazard. 1.4 Minor fire or projection hazard (includes ammunition and most consumer fireworks). 1.5 An insensitive substance with a mass explosion hazard (explosion similar to 1.1) 1.6 Extremely insensitive articles.
Ammunition categories are used to define firearm ammunition types considered safe for transport. The UN Division system and UN Number system categorizes any explosive material by the speed of burning and amount of explosive. The United Nations has also instituted a categorisation system specifically for handgun ammunition. Both these systems ...
Explosives – Substances and articles which are classified as explosives but which present no significant hazard Note: The asterisk is replaced by the compatibility code Division 1.4 Explosives – Very insensitive substances which have a mass explosion hazard Note: The asterisk is replaced by the compatibility code Division 1.5