explosive, any substance or device that can be made to produce a volume of rapidly expanding gas in an extremely brief period. 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 3 low explosives?
Low explosives include materials such as: black powder, smokeless powder, flash powder, and black powder substitutes such as Hodgdon® Pyrodex® and Hodgdon® Triple Seven®.
What are the different types of explosions?
There are three main types of explosions: chemical, mechanical and nuclear.
What are the classes of explosives?
There are 3 classes of explosive materials:
- (a) High explosives (for example, dynamite, flash powders, and bulk salutes);
- (b) Low explosives (for example, black powder, safety fuses, igniters, igniter cords, fuse lighters, and “display fireworks”, except for bulk salutes); and.
What are primary secondary and tertiary explosives?
Explosives may also be categorized by their sensitivity. Sensitive materials that can be initiated by a relatively small amount of heat or pressure are primary explosives and materials that are relatively insensitive are secondary or tertiary explosives.
What are secondary explosives?
Secondary explosive devices are bombs placed at the scene of an ongoing emergency response that are intended to cause casualties among responders.
What is the strongest explosive?
HMX is the most powerful high explosive produced in industrial quantities today. It is a relatively insensitive, temperature-stable and safe-to-handle high explosive that makes it useful in a variety of applications both in military and civilian end products.
What are the example of explosive?
TNT and dynamite are known examples of explosive substances. Pyrotechnic substances: a substance (or a mixture of substances) designed to produce an effect by heat, light, sound, gas or smoke (or a combination of them) as a result of non-detonative self-sustaining exothermic chemical reactions.
What are the three characteristics of all explosions?
What are three characteristics of all explosions? The three characteristics are a large release of energy, production of quickly expanding gas molecules, and a rapid reaction rate.
Which of the following is explosive?
The correct answer is Nitroglycerin. Nitroglycerine is a liquid chemical substance used for making Dynamite by mixing highly sensitive Nitroglycerine with sawdust & powered Silica. The chemical used in the manufacturing of dynamite is Glycerol trinitrate.
What is a Class 3 hazard classification?
Class 3 dangerous goods are flammable liquids with flash points no more than 60 celcius degrees. It covers liquid substances, molten solid substances with a flash point above 60 celcius degrees and liquid desensitized explosives.
What is a Class 4 explosive?
Class 4 – Flammable solids; Substances liable to spontaneous combustion; Substances which, on contact with water, emit flammable gases.
What are the divisions of Class 3 hazardous materials?
The nine hazard classes are as follows:
- Class 1: Explosives.
- Class 2: Gases.
- Class 3: Flammable and Combustible Liquids.
- Class 4: Flammable Solids.
- Class 5: Oxidizing Substances, Organic Peroxides.
- Class 6: Toxic Substances and Infectious Substances.
- Class 7: Radioactive Materials.
- Class 8: Corrosives.
What are the primary explosive?
Primary explosives, which include lead azide and lead styphnate, are highly susceptible to initiation. Primary explosives often are referred to as initiating explosives because they can be used to ignite secondary explosives. Propellants include both rocket and gun propellants.
Is TNT a tertiary explosive?
TNT/RDX/dynamites are secondary explosives. These are relatively safe for handling and can be handled in large-scale production plants with acceptable degree of safety. Ammonium nitrate (AN) explosives are the least sensitive and come in the tertiary explosives group.
Is TNT a primary or secondary explosive?
Secondary High Explosives
Secondary explosives are relatively insensitive to heat, shock, or friction and will normally burn rather than detonate if ignited in small quantities in the open air. Dynamite, TNT, Semtex (plastics) are some common examples of this type of explosive.
What are primary explosives used for?
Primary explosives generate a shock-wave which makes transfer of the detonation to a less sensitive secondary explosive possible. They are therefore used as initiators (e.g. in detonators, primers, blasting cap, etc.) for secondary booster charges, main charges or propellants.
What is a low explosive?
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.
Is PETN a primary explosive?
PETN is a second- ary explosive and as such is not as sensitive as primary explosives such as lead azide. Cast primers of PETN are also supplied as shaped charges. RDX – RDX (cyclotrimethylenetrinitramine) is second in strength to nitroglycerin among common explosives substances.
What does C4 stand for?
Definition of C-4
: a high explosive composed of various chemicals that make it moldable and plastic Before it was detonated, I held a piece of C-4 plastic explosive about the size of a baseball.
What is C4 made of?
C4 was used during the Vietnam War as part of demolition blocks; today, it is commonly used in both military and civilian settings for demolition and flares. C4 is composed of RDX (91%), dioctyl sebacate (5.3%), polyisobutylene (2.1%), and mineral/motor oil (1.6%) [1].
