In critical moments, time is life, and the method of escape is especially important. Similarly, when dangerous goods transport vehicles are in danger, it is also necessary to master some escape methods. Dangerous goods transport vehicles include oil tankers, explosion-proof vehicles, chemical liquid transport vehicles, etc. Today, the editor will introduce some ways to escape at critical moments.
1. Dangerous goods mainly include combustible gas, petrochemical products, explosives, fireworks and firecrackers. Some flammable and explosive solids (ammonium nitrate, white phosphorus, etc.) may explode upon impact and friction. Some dangerous goods may even be exposed to air and water. There will be an explosion. When transporting these dangerous goods, you must choose to travel during the cooler temperature period. Pay attention to the temperature and pressure of the tank, avoid heat and light, and the drivers following the vehicle must be extra careful to prevent collisions. If accidents occur in such vehicles, they must Stay away from the scene for the first time.
2. If gas or liquid leaks, pay attention to the direction of escape. Gas and liquid can flow. When leaking, the escape route should be selected according to whether it is flammable, toxic, and soluble in water, and combined with environmental factors. If there is wind, choose the upwind direction. Toxic, combustible gas or volatile toxic and combustible liquid leaks. If there is wind at the scene, choose the upwind direction to escape, and choose the vertical direction on the ramp. If the accident occurs on a ramp, in addition to paying attention to the wind outward, you must also choose the vertical direction of escape. Methane, carbon monoxide, ethylene, acetylene, etc. are lighter than air. In a windless environment, you should try to escape in a downhill direction. Benzene, chlorine, phosgene, etc. are heavier than air. In a no-wind environment, you should try to escape uphill. If the leak is liquid or liquefied gas, you should choose to escape higher. It should also be noted that the temperature of some liquefied gases is extremely low, and when they leak, they will vaporize and absorb heat. Once contacted, they will cause severe frostbite. Liquid ammonia and liquid benzene are also toxic, and liquid oxygen leakage will increase the probability of explosion.
3. Ammonia, potassium cyanide, and sodium cyanide are soluble in water, and can produce toxic or corrosive liquids in contact with water. When solid sodium metal contacts water, it will generate flammable chlorine gas and produce strong alkali corrosive liquids. Evacuate quickly after the accident and pay attention to the direction of escape. When the concentrated sulfuric acid leaks, it will emit a lot of heat when it meets with water, and the splashing of the liquid will hurt people. Therefore, when the concentrated sulfuric acid leaks in rainy weather, you should quickly stay away from the leakage site.
4. For corrosive acids, be careful not to inhale volatile gases. Nitric acid, sulfuric acid, and hydrochloric acid are strong acids that we are more familiar with. These strong acids are not only untouchable, but also harmful to the human body when inhaled. Therefore, when strong acids leak, pay attention to escape. Direction, and to protect the respiratory tract. Nitric acid may cause combustion when it comes in contact with some organic matter, and it will produce combustible hydrogen gas when it reacts with metals. Pay attention to the surrounding environment and fire prevention when evacuating.
