For initial startup, is it necessary to use gas-tight welding at the joints during chemical process sealing?
Thread Content
For initial startup, is it necessary to use gas-tight welding at the joints during chemical process sealing?
Weld joints are generally inspected through testing and pressure testing, while airtightness is mainly checked by examining flanges, threads, and the like.
At the weld seam, leaks are tested during pressure testing; for airtightness, flanges or areas that can be disassembled are usually tested
Airtightness testing is carried out after pressure testing is completed and before the installation is put into operation. It mainly checks whether there are any leaks in the manholes, covers, flanges, etc. of the experimental vessels, towers, and pumps
Gas tightness testing is carried out after pressure testing is completed, prior to the operation of the device. The main gases used are air, nitrogen, and process gases such as hydrogen. This testing aims to determine whether there are any leaks in experimental containers, towers, valves, manholes, covers, flanges, and other similar components
It’s not necessary. . . . . . . .