Safety knowledge: How can gas stations eliminate static electricity disasters?

Electrostatic hazards are caused by certain conditions. The conditions that cause static electricity as a fire source to cause explosions and combustion can be summarized as four points, namely: 1 There is a source of static electricity; 2 Static electricity can accumulate and reach an electrostatic voltage enough to cause spark discharge; 3 There is an explosive mixture around the electrostatic discharge; 4 The spark energy of the electrostatic discharge reaches the minimum ignition energy of the explosive mixture.

From the conditions for the formation of static electricity disasters, we can see that there are four basic ways to eliminate static electricity at gas stations.

Reduce the generation of static electricity. The measures for reducing static electricity generation at gas stations usually include the following: Oil tank unloading oil inlet pipe shall extend to 0.2 m from the bottom of the tank. Strict discharge of oil shall be strictly prohibited. A reasonable unloading head shall be selected. The elbow shall be minimized in the process. , Valve settings, shorten the distance of the oil pipeline; prevent oil mixed with impurities and moisture; control the unloading and refueling speed.

Prevent the accumulation of static electricity and accelerate the leakage of electrostatic charges. The main measures for the accumulation of anti-static electricity at gas stations are to ground and bridge fuel storage tanks, oil pipelines, tankers, etc. It is forbidden to use plastic barrels to add light oil products.

Prevent the generation of high electric fields that cause static spark discharges. The oil from the tanker must be unloaded and unloaded after the specified rest time. The oil tank can not be manually measured and detected immediately after the oil is collected to prevent the formation of a high electric field. In places of explosion hazard such as refueling operations, unloading operations, and tank farms, operators are strictly forbidden to take clothes off.

Prevent the presence of explosive mixtures. Reduce the concentration of combustible gas in explosion-hazardous locations, such as preventing the running, splashing, dripping, and leakage of oil products. Use closed unloading and oil and gas recovery systems to reduce the concentration of oil vapor.

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