Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
Dangerous Goods Officer
A Dangerous Goods Officer (DGO) is appointed by the competent authority to administer and enforce the Dangerous Goods Legislation.
Dead blow hammer
A dead blow hammer is a specialized mallet helpful in minimizing damage to the struck surface and in controlling striking force with minimal rebound from the striking surface. The head of these hammers are commonly hollow and filled with sand or lead shot, which both absorbs the impact of a strike and concentrates all of the energy of the blow in a focused point.
The operation of a pump when there is no flow due to the outlet or discharge line being closed or blocked.
The separation of a substance into simpler substances or basic elements. Decomposition can be brought about by exposure to heat, light, or chemical or biological activity.
The chemical decomposition of an explosive may take years, days, hours, or a fraction of a second. The slower processes of decomposition take place in storage and are of interest only from a stability standpoint. Of more interest are the two rapid forms of decomposition, deflagration and detonation.
Decoupled charges are commonly used when presplitting with drill holes up to 115mm in diameter.
Typical continuous packaged explosives loaded as a decoupled charge into a presplit.
Deflagration is a term describing subsonic combustion propagating through heat transfer; hot burning material heats the next layer of cold material and ignites it. Most "fire" found in daily life, from flames to explosions, is deflagration. Deflagration is different from detonation, which is supersonic and propagates through shock.
Deflagration is a rapid high energy release combustion event that propagates through a gas or an explosive material at subsonic speeds, driven by the transfer of heat.
A detonator which contains a delay device designed to fire at a fixed interval after ignition.