As a radio communication tool, the radio wave (radio frequency electromagnetic radiation) emitted by the radio transmitter can induce radio frequency current in the antenna receiving the radio. When RF current circulates between metal conductors, RF sparks will be generated in case of corrosion or poor contact. As long as the RF spark lasts for more than one microsecond and the energy is greater than 6 milliwatts, it will ignite the methane-air mixture. Since gasoline is a volatile substance, in the combustible danger area formed by the leakage of oil and gas tanks and natural gas pipelines, radio frequency sparks generated by mobile phones can easily cause explosions and lead to disasters.
When the fuel dispenser station fills the fuel tank of a car or motorcycle with gasoline through the fuel gun, the fuel vapor in the original empty fuel tank will drift outward, and the newly injected gasoline will also volatilize into the air, causing the fuel vapor density around the refueling vehicle to increase sharply. At the same time, in order to make the communication signal clearer, the frequency of mobile phone use is high and the transmission power is relatively strong. Although it meets the national standard, it still poses a serious threat to refueling and gas stations. Because refueling and gas stations are now 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 the fuel dispenser is very small, and the static current generated by the mobile phone in the working state can completely reach this limit. If you encounter cloudy or foggy weather with high air humidity and low air pressure when filling and unloading oil at the gas station, due to poor air circulation, the density of oil and vapor will increase accordingly, and the possibility of an explosion caused by receiving a mobile phone will further increase.
In addition, because the mobile phone itself does not have explosion-proof function, if the mobile phone has been used for a long time or the quality of the mobile phone itself is poor, the circuit of the internal chip of the mobile phone is prone to short-circuit, so that the mobile phone can generate a small amount of sparks at the moment of answering, thus also Can cause an explosion at a gas station.
