Explosion-protected Lights & Mining Lights
Explosion-protected lights are designed to be used in environments in which there could be a sufficient accumulation of flammable gases to cause an explosion or a fire, such as natural gas, toluene, or ethanol. Other potential fire hazards are fine dust from coal, grain, and flour. Working environments that are conducive to these conditions include mining shafts, tunnelling operations, and grain silos. The mining light has a long history of invention and re-invention in an effort to improve the safety of mine workers. Manufacturers and suppliers of safety equipment can turn to productpilot.com for reliable and up-to-date information on the latest technology.
Some early versions of the mining light consisted of burning dried fish skins and carrying bottles of fireflies, both of which produce bio-luminescence, however faint. Another early mining light is the acetylene gas lamp. The lower chamber of the lamp contains calcium carbide and the upper chamber contains water. A controlled amount of water drips into the calcium carbide thus producing acetylene gas. When the acetylene gas ignites, it produces a steady, bright, white light, which was a big improvement over the candle. A mirror behind the lamp reflects the light onto a broader area. The acetylene mining light is still used today in copper, tin, or slate mines where the methane gas is unlikely to be present. Electric lamps powered by batteries became prevalent in the 1920s.
The mining light has gone through a number of transformations in an attempt to produce an explosion-proofed light. Today, there are two basic types of safety lights: the explosion proof light, and the intrinsically safe light. An explosion-proof light is designed to be strong enough to withstand a fire that begins inside the lamp, whereas an intrinsically safe light is designed to carry a voltage that is below the ignition point of flammable gases or dust. LED lights powered by lithium batteries have a longer life, low energy requirements, bright light, and are currently favoured by mine safety regulators.
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