Leakage due to sand holes in the steam pipeline valves
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The steam pipeline leading from the power plant operates at a pressure of 1.6 MPa and a temperature of 200°C. After the pipeline was installed, a hydrostatic test at 3.0 MPa was carried out, and the test passed. The pipeline is now in operation using steam; it has been running for about a week. Today, it was discovered that there is a sand hole in the body of a DN150 valve, causing steam leakage. Although the leak is not severe, the amount of steam escaping is noticeable. I would like to ask everyone: since the pipeline is currently in use, is it okay not to replace the valve? Or could there be any problems if the replacement is done only during a shutdown for maintenance (in about 2 months)?
There are people who specialize in sealing leaks; they can seal them up so they’ll hold for a while, but otherwise it’s hard to say
Find a company that specializes in plugging leaks under pressure; a few attempts are usually sufficient~~~
Is there any introduction available for Guangdong?
Is there any information on leak sealing in Guangdong?
If there is air leakage due to sand holes, it indicates that there are defects in the valve casting; it’s better not to use it. I’m not sure if there will be more leakage and accidents as a result
It can be handled directly by a professional pressure-sealing company.
I don’t know anyone there~~~~
The steam valves are cast, and we often encounter sand holes as well. Our experience in handling such issues is that using a awl at the sand hole and hitting it with a hammer can prevent leaks, allowing the valve to function properly.