Why Can't You Use a Mobile Phone at a Gas Station?

[VonJames]

When using a mobile phone, the phone's internal components generate a very weak discharge, producing tiny sparks. If the concentration of gasoline vapor in the air near the gas station is too high, these sparks could potentially cause an explosion. Therefore, mobile phone use is prohibited near gas stations. Additional Information: There are two most hazardous areas at a gas station where the concentration of fuel-air mixture is very high. 1. Around the vent pipe of the underground oil tank extending above ground. When fuel is being pumped into the underground tank, high-concentration fuel vapor is forced out through the tank's vent pipe, creating a hazardous zone. 2. Around the fuel filler nozzle. When refueling a vehicle, fuel vapor molecules are displaced from the fuel tank, forming another hazardous zone. Both hazardous zones contain high concentrations of fuel-air mixture, and theoretically, making phone calls could potentially ignite the vapor.