In this case, we first take safety measures: open all the underground vent pipe and electric blower, quickly immediately ventilation, if the pipeline is the case of gasoline, then it is particularly volatile, a fire or produce The risk of explosion also increased accordingly.The straight seam steel residual remnants of oil clean, do not throw, you can recycle. Years of practical experience has shown that one kilogram of petrol can evaporate rapidly to fourteen cubic meters of gasoline vapor at ambient temperature and pressure. Gasoline vapor does not rise and accumulates all around the storefront, forming tens of square meters of area, covering the whole work area. Moreover, the gasoline vapor volatilized from the gasoline is mixed with the air, and the detonation of the gas mixture is doubled. When the concentration reaches 17% It will be similar to drunkenness within fifteen minutes, and shocks and deaths may occur if personnel do not take any action at this time; paralysis will quickly occur when the ratio of oil to gas reaches two to one and died. The common cause of leakage is the long-term use of a large amount of water vapor accumulated inside the lsaw pipe and corrosion of the steel pipe. Therefore, in order to ensure the safety of staff, but also for the safety of underground pipeline repair, underground pipelines quickly and immediately ventilation is necessary. After years of oil and gas impacts, the wall becomes thinner and eventually cracks. Once it contacts with the fire, it will immediately cause combustion or explosion.Because once it evaporates, it is in large quantities. Under normal circumstances, gasoline explosion concentration limit higher. According to foreign counterparts that gasoline and air vapor mixture ratio reached one o'clock, then the gasoline vapor can cause poisoning will be very serious; 10 percent of the time, within an hour, the eyes of one who shed tears due to irritation; to 12%, the eyes, nose and throat of a person become particularly uncomfortable due to irritation during one shift hour, resulting in the symptoms of dizziness and blindness.Landfill landfill to quickly recover the underground pipeline leaks to the ground clean, the entire surface covered with fire extinguishing sand cover and repeatedly cleaned more than twice, and then will contain oil spill sand sand sieve sand sieve machine moved to the outside, on the ground on the uniform distribution of about half a centimeter of fire extinguishing sand
