The cause of the gas tank explosion, in addition to forgetting to close the valve, gas tanks in the long-term filling, transportation, use of the process of collision, exposure, media corrosion damage, are likely to produce fatigue cracks, pits, deformation, corrosion thinning and other defects, these defects may be the direct cause of the explosion accident. When the leaked gas mixed with air, reaching the explosive limit, when the open flame will be explosive combustion.
The reason is as follows the main four:
1. equipment damage aging
Buried pipeline if the use of time, due to long-term external forces and corrosion caused by pipeline rupture, resulting in a large number of gas leakage. Valves, flanges and other underground pipeline appurtenances connection breakage will also cause gas leakage, which leads to gas explosion.
2. safety guard failure
Safety valves, explosion-proof valves, explosion-proof sheet, pressure relief valves, alarm systems and other safety guards and facilities failure will also cause gas leakage, explosion-proof electrical explosion-proof system failure in hazardous areas, electrostatic grounding does not work, lightning protection device is bad, etc. will cause gas leakage, resulting in gas explosions.
3. gas company maintenance personnel unauthorized operation
Some gas company maintenance personnel because of the lack of safety awareness, on-site maintenance in violation of the rules and regulations of the operation, in particular, the use of lighters and other open flames leak test, in the user's home unauthorized evacuation of the discharge will cause a gas explosion.
4. Users of unauthorized operation
Users are not aware of the lack of safety, the gas facilities are not in time to the gas supply unit to report repairs, did not take effective measures to deal with, resulting in gas leakage.