Electric Blasting Cap

Electric Blasting Cap

 

a device for detonating an explosive charge by means of an electric current. It consists of a detonator and an electric fuze in a single cartridge.

Current sources used to trigger electric blasting caps include shot exploders and, less often, power or lighting mains. Various designs use a bridge wire (widely used in the USSR), a current-conducting ignition charge, and spark discharges. Industrial types are classified according to operating time as instantaneous, short delay, and long-delay types. The detonator in instantaneous types is triggered directly by the electric fuze; in both delay types it is triggered through a delay composition. Depending on the purpose and the conditions of use, electric blasting caps may be classified as waterproof and nonwaterproof, permissible (for mines that are dangerous because of gas and dust) and nonpermissible, normal and low-sensitivity, antistatic, thermally stable (for use in the petroleum industry, where ambient temperatures reach 270°C), and seismic (for seismic prospecting) types. They are widely used for industrial blasting.

REFERENCE

Rossi, B. D., and Z. G. Pozdniakov. Promyshlennye vzryvchatye veshchestva i sredstva vzryvaniia. Moscow, 1971.

V. M. KOMIR

electric blasting cap

A blasting cap designed for and capable of detonation by means of an electric current.
References in periodicals archive ?
An electric blasting cap, a9-volt battery, a 40mm mortar round and a projectile were among those allegedly recovered from the suspect.
Seized from Hataman were a piece of electric blasting cap, a 9-volt battery, a 40mm ammunition, a projectile 766mm protruding wire, a hand held radio, four cellular phones, two laptops, and a sling bag.
A brief history of initiating systems development (not exclusively Orica's) Decade Key Developments 1740s Electric Ignition of Gunpowder [*] 1830s Safety Fuse [**] 1860s Fuse Blasting Detonator [**] 1870s Electric Blasting Dynamo [**] 1870s Electric Blasting Machine [*] 1880s Electric Blasting Cap [*] 1900s Lead Sheathed Detonating Cord [*] 1900s Regular Delay Blasting Cap [*] 1930s Textile Sheathed Detonating Cord [***] 1940s Millisecond Delay Blasting Cap [*] 1970s Signal Tube Detonator [***] 970s 1st Generation Electronic Detonator [***] 1980s Indirectly Coupled, Induced Current Detonator [***] 1990s 2nd Generation Electronic Detonator [***] 2000 i-kon Source: (*.)Encyclopaedia Britannica on-line (www.britannica.com) (**.)Morhard, Robert C.
The elite troops also seized two improvised explosive devices (IEDs), a battery, one small plastic box, switch and an improvised electric blasting cap.
After the firefight that lasted almost one hour, the raiding team swooped down on four houses of Barros and confiscated 15 long and short firearms, including rifle grenades, two fragmentation grenades, one link for K3 machine gun, two bottles of ANFO, three improvised blasting caps with time fuse, five pieces of shock tube, electric blasting cap, one silencer and assorted magazines and ammunition.
The responding police force found in the reported area 21 improvised hand grenades, 5 pieces improvised anti-personnel clamor mines, three PVC pipes, 52-meter long electrical wire, 3 kilograms of soluble fertilizer, 200 grams of sulfur, chemical substances, a kilogram of ANFO (ammonium nitrite, fuel oil), 4 pieces dynamite; 60 pieces improvised electric blasting cap; 240 kilograms steel cut fragments (round bars), 370-meter safety fuse, gun powder, steel pipes and other bomb-making materials.
Electric blasting caps are probably mostly used today, and are necessary for setting off a series of simultaneous blasts, as in digging a ditch.
Among the items recovered were 21 improvised hand grenades, five pieces improvised anti-personnel clamor mines, three PVC pipes; 52-meter long electrical wire; three kilograms of soluble fertilizer; 200 grams of sulfur; a kilogram of ANFO (ammonium nitrite, fuel oil), four pieces dynamite; 60 pieces improvised electric blasting caps; 240 kilograms steel cut fragments (round bars); and 370-meter safety fuse.
Products manufactured at the facility included explosive powder containing mercury and lead, detonating fuses, electric blasting caps, metal wires and aluminum and copper shells.