What does firedamp meaning?

Definition of firedamp : a combustible mine gas that consists chiefly of methane also : the explosive mixture of this gas with air.

What was firedamp used for?

noun Mining. a combustible gas consisting chiefly of methane, formed especially in coal mines, and dangerously explosive when mixed with certain proportions of atmospheric air. the explosive mixture itself.

What is firedamp made of?

description. Firedamp is a gas that occurs naturally in coal seams. The gas is nearly always methane (CH4) and is highly inflammable and explosive when present in the air in a proportion of 5 to 14 percent. White damp, or carbon monoxide (CO), is a particularly…

What are the causes of fire damp explosion?

 In coal mines, explosions are caused  By ignition of firedamp (Fire damp explosion) or  By ignition of coal dust (Coal dust explosion) or  By both (Mixed explosion)  In metal mines, explosions are due to sulphide dust (iron pyrite). 4.

What gas is released in coal mines?

The debris resulting from the collapse is known as gob and also releases methane or ‘gob gas’ into the mine. Methane released from the worked coal face can be diluted and removed by large ventilation systems designed to move vast quantities of air through the mine.

What is firedamp chemistry?

From Wikipedia, the free encyclopedia. Firedamp is flammable gas found in coal mines. It is the name given to a number of flammable gases, especially coalbed methane. It is particularly found in areas where the coal is bituminous.

What are the steps to be taken to prevent fire damp explosion?

PREVENTIVE MEASURES: i) Adequate ventilation to dilute any possible emission of fire damps is of paramount importance, for this purpose suitable high capacity fans have been provided. ii) Suppression of dust at the source by water spraying at different places in Underground.

Which gas is found in coal mines?

Methane
Methane (CH4) is the principle combustible gas found in coal mines. What is the explosive range of methane-air mixtures? 5 to 15 percent of methane in air is explosive.

Why do miners bring birds?

Well into the 20th century, coal miners brought canaries into coal mines as an early-warning signal for toxic gases, primarily carbon monoxide. The birds, being more sensitive, would become sick before the miners, who would then have a chance to escape or put on protective respirators.

How do miners get oxygen?

The concept is known as “flow through” ventilation: air is sucked into a shaft underground by fans on the surface, while extractors at the top of the mine drag the air back out. As it passes through the various passageways of the mine it brings with it the fresh supply of oxygen.

https://www.youtube.com/watch?v=t53Eazy4s90