41 mine workers were martyred in the firedamp explosion that occurred in the Turkish Hard Coal Institution (TTK) mine in Bartın Amasra. After the hard coal disaster, it is wondered how and why the firedamp explosion occurred.
What is a Grenade Explosion?
A firestorm explosion is an explosion formed by mixing air with certain proportions of methane gas. A minimum of 12% oxygen is required for the explosion to occur. Methane gas, which is 5-6% in the air, only burns with a temperature effect, and becomes explosive if the methane ratio is 5-16%. The easiest explosion occurs when the methane content is 8% and the most severe explosion is 9,5%. Ignition sources are open fire, overheated surfaces, friction and electrical sparks. Soma disaster and Amasra mine accident also took place.
How Does a Grenade Explosion Happen?
It can also be called a grizu, in other words, a methane-air mixture. This mixture, consisting of the combination of 5% – 15% methane and air, performs a 650-phase combustion at 2°C. This mixture expands suddenly, then compresses the gas with great force towards the center of the explosion. It is an explosion with great destructive power and devastating effect.
What Causes a Grenade Explosion?
The firewood, which is the nightmare of the coal mines, is also frequently seen in Turkey. Especially in old coal seams, the risk of grise is high. By law, the airborne rate of methane is 1% by volume. When this level is reached, immediate action is required. If this mixture rises above 1%, the mine must be emptied immediately.
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