Why are cell phones forbidden in gas stations?

Because making a phone call may produce radio frequency current, it will produce electric sparks in metal conductors, especially in places with corrosion or unstable contact, which will suddenly detonate flammable gases in the air.

When the mobile phone is in normal standby, the internal current is only about 8~ 10mA. When the mobile phone is connected, the internal current of the mobile phone may increase to 2? -2.5A, and may produce electric sparks, which may easily cause fire or even explosion when it comes into contact with dense combustible gas molecules at gas stations. Don't answer the phone at the moment, safety first.

1. Gasoline is a volatile liquid. The pipeline in the fuel tank of the gas station leaks, and the pipeline in the tanker is loose. When the fuel filler and the vehicle fuel tank cover are opened to refuel, the gasoline will volatilize into the air, especially when the fuel gun fills the vehicle fuel tank with gasoline.

Oil will push the oil and gas in the fuel tank in the opposite direction, making it drift outward quickly, and the surrounding air will become combustible gas. At this time, it is easy to cause combustion and explosion, leading to disaster.

2. The mobile phone can receive radio waves through the antenna (now the antenna of the mobile phone has changed from external to internal), and when the radio waves touch the antenna, it will generate current. When the current flows between metal conductors, sparks will be generated when it encounters metal corrosion or poor contact, especially for tank trucks and vehicles that are refueling. The duration of this RF spark is 1 microsecond, which will ignite a certain concentration of oil-gas mixture.

Extended data:

Precautions for gas stations:

1. No smoking?

Smoking is absolutely forbidden in gas stations. After the car enters the gas station, drivers and passengers are not allowed to smoke inside or outside the station. Because a large number of combustible gas molecules are gathered near the gas station, tiny sparks may cause fire or even explosion. Don't harm others and yourself by satisfying a temporary addiction to cigarettes.

2. Don't be too full.

Put the oil gun as far as possible at the tank mouth, which is too full and easy to cause oil leakage. Generally speaking, it is advisable for a tanker to jump into the gun and refuel automatically. When refueling, put the oil gun into the tank mouth as much as possible, which can reduce the volatilization of gasoline vapor and reduce sparks from the source.

In order to avoid the danger of fire. Many gas station accidents are caused by oil and gas leakage and high-temperature car bodies. So the owner must pay attention to this detail. ?

3, stop refueling must be turned off.

When entering the gas station to refuel, be sure to turn off the engine, power supply and engine. This can not only ensure the safety of refueling, but also avoid unexpected and uncontrollable consequences in the process of refueling. At the same time, it can also reduce pollutant emissions. ?

It is forbidden to use plastic containers for gasoline.

Oil products cannot be filled in plastic containers, because oil products will generate static electricity when flowing in plastic containers, and plastic is insulated, so static electricity cannot be eliminated in time. Static electricity will react with oil molecules when it accumulates to a certain extent, which is very dangerous.

5. Don't beat off clothes made of chemical fiber, nylon and knitting.

Don't comb your hair just because you hit or put on clothes made of chemical fiber, nylon or knitting. The friction between them will generate static electricity, which can instantly ignite flammable and explosive gas molecules and spread to the vicinity of gas stations.

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