Emergency leak sealing

For minor leaks, we usually use temporary plugs to deal with them, and replace them all at once during maintenance. Large leaks are a different matter

For small leaks in pipelines carrying flammable and explosive materials, repairs are carried out; for larger leaks, the valves located before and after the affected section of the pipeline are closed, and nitrogen is injected. If there is a leak accompanied by a fire, the same procedures are followed. The main purpose is to prevent backflow of negative pressure in the pipeline, which could lead to an explosion. Steam is also used to dilute the flammable gases and prevent them from coming into contact with air, while fire-fighting water is used to cool the equipment and pipelines.

A leak in a steam pipe is quite troublesome; it will get worse over time, and water hammer can also occur. Saltwater leakage causes even more severe salt corrosion. It turns out that replying to your questions earns wealth points, hehe.

Be extremely careful when sealing leaks in pressure pipelines and pressure vessels! ! Plugging leaks under pressure is a last resort! Plumbers who handle leak repairs should generally work with a valid license! ! Safety first! !

33 articles on the applications of leak sealing under pressure: http://bbs.hcbbs.com/thread-214790-1-1.html “Techniques and Applications of Leak Sealing Under Pressure”; “Applications of Leak Sealing Under Pressure Without Shutdown and at Operating Temperature”; “O-ring flange connections for leak sealing under pressure without shutdown”; “The winding method – a new simple approach for leak sealing under pressure”; “A new method for leak sealing under pressure using misaligned flanges without shutting down production”; “Key techniques for leak sealing under pressure”; “Improvements to the sealing mechanism of fixtures used for injecting glue to seal leaks in high-pressure systems under pressure”; “Applications of several online techniques for leak sealing under pressure”; “A device for monitoring leak sealing under pressure”; “Applications of adhesive technology in leak sealing under pressure”; “Applications of leak sealing techniques for steam pipelines under pressure”; “Treatment of leaks in welds of auxiliary boiler pipes under pressure”

There must be standards for pressure pipelines; it’s quite challenging

Dude, are you from Jinling Petrochemical?

For ordinary materials, such as recycled water and fresh water, online packaging is possible； The low-pressure steam line can be glued using a clip ； Oil pipelines need to be handled on a case-by-case basis.

Depending on the properties of the material leaking, the amount of leakage, and the pressure, as well as whether conditions for plugging the leak under pressure are available, the plugging operation is carried out by professionals qualified to do so.

In steam pipes, as long as the pressure isn’t too high, for small leaks, a larger nut can be welded onto the leak site, the screw can be tightened, and then it can be welded in place. . It tests the welder’s skills greatly. Saltwater pipelines are quite problematic; it’s best to stop the pump and replace the pipelines, as this affects the quality of the saltwater and is harmful to the tanks and membranes. For the jacket of the reaction vessel, apart from stopping operation to fix leaks, there aren’t any other effective solutions, I guess. What should I check on the material pipeline? . The emergency treatment usually involves wrapping PTFE tape around the clip and then fastening it. The above applies only to small leaks.