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煤气企业的设备在投产和维修中,经常遇到可燃气体的置换和带可燃气体的作业,甚至是带可燃气体的动火作业。这些工作包括:新制成的各种塔、罐、换热器、工艺管线等在投入使用前要将设备中的空气进行置换;运行中的各种塔、罐、换热器、工艺管线上的附件,如阀门、液位计、温度计、压力表等需要维修或更换;运行中的各种容器,要带可燃气体进
In the production and maintenance of the gas company’s equipment, the replacement of flammable gases and the operation with flammable gases are often encountered, and even hot work with flammable gases. These tasks include the replacement of air in the equipment before the new towers, tanks, heat exchangers, and process lines are put into use; various towers, tanks, heat exchangers, and process lines in operation Accessories, such as valves, level gauges, thermometers, pressure gauges, etc., need to be repaired or replaced; various containers in operation must be carried with combustible gas.