Why can't I call at gas stations?

As we all know, the operation of flammable and explosive gas stations belong to high-risk occupation, "safety first" is the most fundamental requirements of gas stations. Common safety measures at gas stations mainly include shutting down motorcycles and refueling, gas station employees must wear anti-static clothing to work, discontinuing open flames and prohibiting cell phone conversations at gas stations, and not using plastic drums for refueling. One of the more difficult things to deal with is to avoid customers using cell phones to make calls at gas stations.

First, there is a misunderstanding of the safety risks associated with cell phone calls at gas stations. Why can't I make a phone call at the gas station? Some people think that blasting accidents caused by cell phone calls at gas stations are sensational, and they have never heard of a blasting accident caused by cell phone calls. In fact, there is some scientific basis for cell phone blasting accidents.

Cell phone is a radio communication device. Radio waves (radio frequency electromagnetic radiation) emitted by radio transmitters can induce radio frequency currents in the antenna carrying the radio. When the radio frequency current in the metal conductor between the circulation, if rust or poor contact, radio frequency sparks will occur. The RF spark will extinguish a mixture of methane and air if it lasts longer than 1 microsecond and has an energy greater than 6 milliwatts. Because gasoline is a volatile substance, in the oil and gas tank and gas pipeline leakage constitutes a dangerous area of combustible gas, the RF sparks recovered by the phone is very likely to cause an explosion and cause a disaster.

When the gas station through the gun to fill the car or motorcycle tank with gasoline, the vapor in the empty tank will drift outward, the new spray of gasoline will also evaporate into the air, the formation of fuel vapor density around the refueling vehicles increased significantly. At the same time, in order to make the communication signal clearer, cell phones use a higher frequency and relatively strong transmitting power. Although they comply with national standards, but they still pose a serious threat to the gas station. As gas stations and stations are now commonly computer-controlled, high-intensity cell phone signals can be induced with computer equipment, and the electronic friction between the two can ignite fuel vapor and cause an explosion. The current required to ignite the fuel vapor is very small, and the static current generated by the phone in its working form can reach this limit. If you encounter a cloudy or foggy climate with high air humidity and low air pressure when refueling or unloading at a gas station, the possibility of cell phone calls causing explosions will increase greatly due to poor air circulation and the corresponding increase in oil vapor density. Further increase.cell phone signal jammer

In addition, because the phone itself does not have explosion-proof function, if the phone is used for a long time or perhaps the phone itself is of poor quality, the circuit of the external chip of the phone is very short-circuited, so that the phone in the answer to the sudden occurrence of a large number of sparks. It will cause an explosion in the gas station.

Secondly, to avoid customers in the gas station using a single approach to cell phones. At present, the secondary way to prevent customers from using cell phones at gas stations is persuasion, but sometimes the effect of persuasion is not ideal. On the one hand, customers are not clear about the safety management rules of gas stations and think that it is unnecessary and almost rebellious for gas station employees to prevent them from making phone calls at gas stations. On the other hand, the customer knew he could not use his cell phone at the gas station, but he got lucky and he thought on the one hand that he had an episode when he called, so he did not listen to the persuasion of the staff at the gas station and did as he was told.signal jammer for sale

It is not uncommon for car owners to make cell phone calls at gas stations. Gas stations should be at risk. They should not ignore this sight and let them off the hook. Effective measures must be taken to eliminate safety hazards and ensure the safety of gas stations.