The compound of CH4 is a chemical compound known as methane and is present in the gas state under normal pressure and temperature. Methane gas has no color and odor and is a component of natural gas. Therefore it is an important fuel.

Unfortunately, in coal mines, there is methane gas in the composition of grizu gas which causes uncommon grizu explosions. Typically, methane gas is produced by decomposition of plant residues under water with bacteria. Although it is a generally chemically stable substance, there is a danger of severe explosion if its concentration in the air reaches between 5-14 percent. This is also the reason for the explosion in the dumps.

The main source of methane is natural gas. In addition, hard coal is heated and degraded in airless environment or obtained from large dumps. Today, projects are underway to use methane gas generated in the garbage mountains for electricity generation.

Methane gas can be explosive even if it mixes not only with air but also with other chemicals at low percentages like 5. If there is a bad smell in the workplace that looks like a rotten egg, the methane level is elevated and an explosion may occur at any time. High concentrations of methane can ignite fatal consequences.

Methane gas is not toxic, but because it replaces the oxygen in the air, it is problematic to breathe and is therefore considered a suffocating gas. If the amount of oxygen in the air falls below 16 percent, this is dangerous, and if it falls below 10 percent, it can be fatal. For this reason, regular measurements must be made in order to prevent the oxygen content in working environments to fall below the percentage of 18.

The Occupational Health and Safety Law published by the Ministry of Labor and Social Security in 2012 is to regulate the duties, powers and responsibilities of employers and employees in order to ensure occupational health and safety in work environments and to improve existing health and safety conditions. Under this law, employers are obliged to carry out risk assessments to prevent occupational risks in order to ensure the health and safety of employees. In principle, businesses have to avoid risks, analyze risks if it is not possible to avoid, and combat these risks at source.

For this purpose, enterprises have to carry out some measurement, test and analysis studies. Within this framework, enterprises have to take the necessary measurements to determine the level of methane gas (CH4) in the environment according to their field of activity. These measurements are carried out by authorized test and inspection institutions. During the measurements, legal regulations in force and standards published by local and foreign organizations are taken into consideration.

In short, methane gas is an explosive and flammable gas which is known and contributes to the concept of gas safety. Methane gas is the main component of the formation known as grizu in mining. In daily life, it is a chemical component known as natural gas.