Safety Tip: Fireproof and explosion-proof knowledge of gasoline

Gasoline is a colorless or light yellow, volatile liquid with a self-ignition temperature ranging from 250 to 530°C and an explosive range between 0.76% and 6.9%. It is highly flammable and can ignite even when exposed to the smallest spark. Due to its wide flammability range, strict fire safety measures must be followed when handling and using gasoline. ★ Always use non-sparking tools when working with gasoline. Avoid striking fuel cans or empty oil drums with metal tools, as these containers may still contain a flammable mixture of gasoline vapor and air. This mixture can easily fall within the explosive limits, leading to a dangerous explosion if exposed to an open flame. Therefore, it is strictly prohibited to use iron tools in petrol storage areas. Additionally, ensure that oil barrels do not collide with each other, and avoid wearing shoes with metal nails in the warehouse to prevent sparks from metal-to-metal contact. ★ When refueling vehicles, make sure to cover the exhaust pipe of nearby cars with a fireproof cap before starting the engine. Also, never perform vehicle repairs near the storage area, as this increases the risk of fire. ★ Gasoline should only be stored in approved tanks and containers. Smoking, fireworks, and any sources of ignition such as lighters or matches are strictly forbidden in gas stations, oil depots, and garages. Explosion-proof lighting and switches must be used in these areas, and open flames or oil lamps are not allowed. Never store gasoline alongside flammable or explosive materials like cotton, matches, detonators, explosives, or oxygen. ★ Do not discard oily rags, cotton waste, or oil-stained gloves in the oil depot, garage, or workshop. These items can spontaneously combust due to oxidation. Oily materials, especially those soaked in lubricating oil, can generate heat through oxidation, which accelerates the process and eventually leads to self-ignition. To prevent this, all oily waste should be collected in covered metal containers and disposed of promptly. ★ Ensure proper ventilation in warehouses, oil depots, and workshops to prevent the accumulation of gasoline vapors, which can create hazardous conditions. ★ In case of a fire, use dry powder or foam extinguishers along with asbestos blankets for effective suppression. ★ Be cautious of static electricity during the transportation or use of gasoline. Friction between gasoline molecules and other materials can generate static charges. If the voltage becomes high enough, a spark may occur, potentially igniting a flammable mixture and causing a fire. Always take precautions to ground equipment and avoid unnecessary friction. (Submitted by Jinhai Qiang, Sinopec Guangxi Yulin Petroleum Branch)

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