High explosives are divided into three main categories, Primary (or Initiating) High Explosives, Secondary High Explosives, Boosters and Secondary High Explosives, Main Charge.
What are the characteristics of explosives?
In general, an explosive has four basic characteristics: (1) It is a chemical compound or mixture ignited by heat, shock, impact, friction, or a combination of these conditions; (2) Upon ignition, it decom- poses rapidly in a detonation; (3) There is a rapid release of heat and large quantities of high-pressure gases …
What is a Class C explosive?
Class C Explosives – a term formerly used by the U.S. Department of Transportation to describe explosives that contain Class A or Class B explosives, or both as components but in restricted quantities. (Currently classified as Division 1.4 materials.)
What are examples of explosive materials?
Examples include primary explosives such as nitroglycerin that can detonate with little or no stimulus and secondary explosives such as dynamite (trinitrotoluene, TNT) that require a strong shock (from a detonator such as a blasting cap). Low explosives change into gases by burning or combustion.
What are low explosives?
Low explosives are mixtures of chemicals that burn very rapidly, but subsonically (as opposed to supersonically), meaning that they “deflagrate.” They consist typically of fuel and an oxidizer. The black powder used in fireworks is one example of a low explosive.
What kind of explosives are used in mining?
Ammonium nitrate fuel oil (ANFO) is made of about 94% ammonium nitrate and 6% fuel oil. ANFO is widely used as an explosive in mining, quarrying, and tunneling construction or wherever dry conditions exist.
What is the importance of explosives analysis?
Analysis of explosives in storage is important for assessing the purity of their components, the uniformity of composition, and the various decomposition products.
What are 1.1 explosives?
Division 1.1 consists of explosives that have a mass explosion hazard. Examples are black powder, nitroglycerine (desensitized), dynamite, most types of torpedoes, and mercury fulminate. Division 1.2 consists of explosives that have a projection hazard but not a mass explosion hazard.
What are the types of explosives?
There are three fundamental types: mechanical, nuclear, and chemical. A mechanical explosive is one that depends on a physical reaction, such as overloading a container with compressed air.
What are the most widely used low explosives?
Consider for instance black powder, the most primitive form of gunpowder and the quintessential low explosive. In black powder, charcoal and sulphur are the fuel, and postassium nitrate (KNO3) is the oxidizing agent.
What are high and low explosives?
Materials that detonate (the front of the chemical reaction moves faster through the material than the speed of sound) are said to be “high explosives” and materials that deflagrate are said to be “low explosives”. In contrast, some materials are merely combustible or flammable if they burn without exploding.
What is the minimum size of an ideal explosive?
Ideal explosives, can be as small as 0.04 inch (1 mm ) Non-ideal explosives, can be large as 8 inch (200 mm) For Non-ideal explosives, Dcritcan depend on the level of confinement Critical Diameter = Dcrit Dcritis important for determining hole size/explosive type compatibility
What are unstable explosives?
1 Unstable explosives are those which are thermally unstable and/or too sensitive for normal handling and use. Special precautions are necessary. 2 This comprises substances and articles which are manufactured with a view to producing a practical explosive or pyrotechnic effect .
Who is idideal blasting Supply Inc?
Ideal Blasting Supply Inc (founded in 1979) saw unmet needs for drilling and blasting professionals, and through several of our own inventions made life easier for commercial blasters.We then focused on helping our EOD / Bomb tech’s stay safe while performing their hazardous job.
What do you mean by explosive substance?
1. An explosive substance is a solid or liquid substance (or mixture of substances) which is in itself capable by chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings. Pyrotechnic substances are included even when they do not evolve gases.
