Explosive Articles
Explosive articles include a wide variety of devices or tools that employ explosives which on initiation produce a sudden, powerful expansion of gases used to some mechanical advantage: drive turbines, move pistons, shear bolts and wires, operate pumps, a
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Explosive articles include a wide variety of devices or tools that employ explosives which on initiation produce a sudden, powerful expansion of gases used to some mechanical advantage: drive turbines, move pistons, shear bolts and wires, operate pumps, and start engines. Often, these articles contain an explosive cartridge, an explosive charge encased in a cartridge case made of metal, fibre, paper, plastic, or other material. POWER DEVICES
Power devices syn. power device cartridges or industrial ammunition are explosives that o
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Activate valves, switches, or diaphragms. For example, actuating cartridges trigger the catapults that project a pilot's canopy and seat away from an aircraft in emergencies or open fire extinguisher valves allowing them to dispel their contents. Inflate air bags in the event of a vehicle crash. Function as release devices, such as rod or bolt cutters that sever a rod or link between two items of hardware. A cable cutter functions by forcing a blade into a receiving anvil, severing connectors interposed
69 M. A. Fox, Glossary for the Worldwide Transportation of Dangerous Goods and Hazardous Materials © Springer-Verlag Berlin Heidelberg 1999
Explosive Articles
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between them. Release devices are used in remote, inhospitable, or inaccessible locations to release solar array panels from the side of a satellite, drop fuel rods into nuclear reactors, or separate the stages of a space launch vehicle, etc. Project fastening devices like explosive rivets (used in inaccessible places) which contain small explosive charges and which are initiated when the head of the rivet is touched by a heat source. Provide rotary motion like jet engine starter cartridges used to initiate the rotation of jet engine turbine rotors.
EXPLOSIVE CHARGES
Other explosive articles are used directly for their explosive power used in ammunition, blasting, and as o o
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Demolition charges for commercial or military earth-moving or levelling buildings. Commercial charges used in metallurgy to join, weld, or form metals: metal parts may be shaped in a confined die cavity by the force of an explosive blast; sheets and charges of explosive may be placed on metals to weld or fuse them. Explosives in seismic thumpers which generate regular, highly controlled signals for petroleum prospecting. Explosive fracturing devices used to fracture rock formations at the base or shaft walls of oil wells to increase the flow of gas or oil. These devices may use shaped charges or oil well cartridges (syn. industrial ammunition) which propel steel or hardened projectiles.
SHAPED CHARGES AND JETS
Shaped charges are high explosives in one of two forms: o
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Cone- or V-shaped hollows formed in the surface of solid explosive charges. On detonation, the explosiv
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