How to deal with the leakage of sulfur hexafluoride gas in GIS?- SF6在线监测系统_SF6检漏仪_SF6传感器_SF6密度继电器

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How to deal with the leakage of sulfur hexafluoride gas in GIS?

发布时间：2019-06-24 来源：ydlcb 浏览次数：43次

In case of an emergency, such as a large leakage of the SF6 distribution GIS device, evacuate the site immediately and start all exhaust fans to exhaust air. Only after sufficient natural exhaust or forced exhaust, with a leak detector to measure the SF6 gas qualified, with the instrument to detect the oxygen content (not less than 18%) qualified, personnel are allowed to enter. When the explosion-proof film of the equipment breaks, it should be treated with power failure and wiped clean with gasoline or acetone.

Sulfur hexafluoride is an asphyxiant that, in high concentrations, causes difficulty breathing, wheezing, blue skin and mucous membranes, and generalized convulsions. After inhaling a mixture of 80% sulfur hexafluoride and 20% oxygen for a few minutes, the human body will experience numbness in the limbs and even suffocation. China stipulates that the allowable concentration of sulfur hexafluoride gas in the air in the operation room should not be greater than 6g/m3 or the oxygen content in the air should be greater than 18%; For short-term exposure, the allowable concentration of sulfur hexafluoride gas in the air is not greater than 7.5g/m3. Sulfur hexafluoride is an inert gas with low toxicity but asphyxiating effect on human body. In the course of life or use, some trace amounts of toxic sulfur of low fluorine compounds and fluorine oxides will be broken down. Under the action of the arc SF6 decomposition, such as SF4, S2F2, SF2, SOF2, SO2F2, SOF4 and HF, etc., they have strong corrosion and toxicity. Therefore, in the workplace where SF6 is applied, such as power system GIS, SF6 gas leakage monitoring equipment should be installed to achieve early monitoring and early prevention.