Why are cell phones not allowed at gas stations?

Gas stations are flammable and explosive places and are high-risk industries. In addition to the "No Fireworks" warnings at gas stations, you also often see "No Cell Phones" related slogans. Regarding the first item, both gas station staff and customers can strictly abide by it, but regarding the latter item, many people seem to adopt an indifferent attitude. In fact, the volatilization of gasoline vapor reaches a certain concentration limit, and the sparks that appear during the process of making calls and answering calls can easily cause explosions. Not only inside the station, but also within two to three meters of the gas station. You are not allowed to use mobile phones. This is no joke!

Because gasoline is a volatile substance, in combustible gas danger areas caused by leaks in oil and gas tanks and natural gas pipelines, radio frequency sparks generated by mobile phones can easily cause explosions, leading to disasters. The mobile phone itself is not explosion-proof. When a gas station injects gasoline into a car or motorcycle tank through a fuel gun, the oil vapor in the original empty tank will disperse outwards. In addition, the newly injected gasoline will also evaporate into the air, causing the density of oil vapor around the refueling vehicle to increase sharply. At the same time, in order to make communication signals clearer, people use mobile phones with high frequencies and relatively strong transmitting power. Although they comply with national standards, they also pose a serious threat to refueling and gas stations; because now refueling and gas stations are generally controlled by computers. , high-intensity mobile phone signals will cause induction with computer equipment, and the instantaneous electronic friction between the two may ignite fuel vapor and cause an explosion. The current required to ignite fuel vapor is very small, and the static current generated by the mobile phone during operation can fully reach this limit. If you encounter cloudy or foggy weather with high air humidity and low air pressure when refueling or unloading oil, the density of oil and vapor will increase accordingly due to poor air circulation, and the possibility of explosion caused by making or receiving mobile phone calls will further increase. big.

Notes

For the safety of you and others, please remember not to answer or make calls on your mobile phone at will.