Tianshui Firefighting confirmed today that at 23 o'clock on August 22nd, a horizontal tank full of 20 cubic meters of trichlorosilane was leaking in Xiepo Village, Hualin Township, Wushan County, Tianshui City. The fogged and pungent gas diffused around, seriously Threaten the safety of surrounding villagers and passing vehicles. After the fire detachment received the alarm, after nearly three hours of rescue, the leaked tank was successfully plugged.
At 24:00 on August 22, the Wushan Fire Brigade received a phone call from the County Administration of Work Safety, stating: “The leakage of a trichlorosilane horizontal tank in Xiepo Village, Hualin Township, and the County Administration of Work Safety and the Environment and Sanitation Bureau after an hour of disposal , requested the Wushan brigade to come to the rescue.
At 1 a.m. on the 23rd, firefighters rushed to the site of the accident about 1 km, they vaguely saw the incident filled with a mist of gas. The closer to the point of the incident, the stronger the pungent odor. The on-site commander organized rescue personnel to conduct reconnaissance on the leak, cut off the surrounding power supply, conducted personnel evacuation on the site and alerted within 1 km. At 2:30 a.m., the rehabilitated Secret Service fire officers reconstructed the scene and discovered that the large tanks were continuously spraying white smoke and that they had issued a strong buzzing sound, surrounded by white gas with a strong pungent odor. The situation at the scene is extremely urgent and the rescue cannot be delayed. The field commander decided to let Wang Hongchao, the squadron leader of the special squadron with multiple experience in plugging leaks, and Wang Jianzhou, the assistant to the squadron leader, plug the two leakage points. After the firefighters put on personal protective equipment, they first close the leaked valve with a spark-free wrench. Afterwards, a bucket was sawn from the bottom, and then the bucket was placed on the long feet of the tank. The method of irrigation cement was used to successfully close the leakage leakage point.
It is understood that trichlorosilane is also called trichlorosilane, which is a colorless, transparent liquid with irritating, odor, and easy to flow and volatile under normal temperature and pressure. It is extremely flammable in the air and has a fire risk below -18°C. It burns intensely in the event of a fire, and emits a red flame and white smoke when it burns. Trichlorosilane reacts with water to produce hydrogen chloride, hydrogen, and silicon dioxide, and emits a lot of heat, which can cause equipment corrosion and potential safety hazards. If it encounters water in the open air, it can cause burning and burning. The burning vapor can form explosive mixtures with air in a wide range of concentrations and cause violent explosion when heated.
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