Problems with pipeline purging
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Our factory has a DN150 carbon steel pipeline, and theoretically it should be purged using blasting. However, the conditions on site do not permit this. Is it possible to install a ball valve at the end of the pipeline, then supply instrument air to it up to a pressure of 5 kilograms, and subsequently quickly open the ball valve to release the pressure? What is this other method of purging called? Boost/boost-down purge?
And this way, you won’t achieve any purging effect at all
"What does “the conditions on site do not permit it” mean?
Solutions can be customized based on the medium inside the pipe
Use pressure retention purging; this will ensure thorough cleaning. There’s no need for such high pressure – 3 kilograms is sufficient. Lower pressure is safer.
Why? Can’t the pressure be a bit lower?
It can’t be said that the conditions on site prevent it; if blasting is used, it’s rather complicated and may require modifications to the pipelines
Quality inspection will not approve it; it’s quite dangerous – blasting and purging require safety measures
I currently have 3000 units of data transfer volume. I’m not sure whether continuous purging will be sufficient, and I also want to know how long it will take if continuous purging is used