1. Cleaning materials by a blast of air that blows small abrasive particles against the surface. 2. The act of detonating an explosive.


Related Terms

DRY BLAST CLEANING

Cleaning of metallic surfaces by blasting with abrasive material traveling at a high velocity; abrasive may be accelerated by an air nozzle or a centrifugal wheel.

ENVIRONMENTAL CAB

Operator's compartment in earthmovers equipped with tinted safety glass, soundproofing, air conditioning, and cleaning units.

FROST SMOKE

  1. Fog-like clouds due to contact of cold air with relatively warm water, which can appear over openings in the ice, or leeward of the ice edge, and which may persist while ice is forming. 2. A rare type of fog formed in the same manner as a steam fog but at lower temperatures. It is composed of ice particles or droxtals instead of liquid water as is steam fog. Thus, it is a type of ice fog. Sometimes called BARBER. 3. See STEAM FOG.

BLOWTORCH

A small, portable blast burner which operates either by having air or oxygen and gaseous fuel delivered through tubes or by having a fuel tank which is pressured by a hand pump. Also known as blast lamp; blowpipe.

AIR CLASSIFIER

A device to separate particles by size through the action of a stream of air. Also known as air elutriator.

SOOT BLOWER

A tube from which jets of steam or compressed air are blown for cleaning the fireside of tubes or other parts of the boiler.

HAZARDOUS AIR POLLUTANTS

Chemicals that are known or suspected to cause cancer or other serious health effects, such as reproductive effects or birth defects, or adverse environmental effects. Listed hazardous air pollutants include benzene, found in gasoline; perchlorethlyene, emitted from some dry cleaning facilities; and methylene chloride, used as a solvent and paint stripper in industry; as well as dioxin, asbestos, toluene, and metals such as cadmium, mercury, harmonic vibration See harmonic motion.

CYCLIC CATALYTIC REFORMING PROCESS

A method for the production of low-Btu 142 other fluids by centrifugal means; used to remove dust from air or other fluids, steam from water, and water from steam, and in certain applications to separate particles into two or more size classes. Also known as cyclone classifier.

FIRN

Old snow which has recrystallized into a dense material. Unlike snow, the particles are to some extent joined together; but, unlike ice, the air spaces in it still connect with each other

CONCUSSION

Shock waves in the air caused by an explosion underground or at the surface or by a heavy blow directly to the ground surface during excavation, quarrying, or blasting operations.

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