Pipeline rupture in winter
Thread Content
I have a question for everyone: if the pipelines freeze in winter, and steam is used to heat up a certain section of the pipeline for an extended period at high temperatures, could this cause the pipeline to burst? Thank you; please share your thoughts
One cannot focus on one place for a long time
The steam temperature is not high enough to cause changes in the material properties. However, if air is blown from only one side, the temperature difference between the front and back sides can lead to deformation
No, usually when pipes freeze, low-pressure steam at 0.5 MPa is used for thawing them; there’s no issue with the pipes, and I’ve never heard of high-pressure steam being used for this purpose
Those that were not frozen and cracked initially will not crack due to being blown with steam.
Do not blow on a specific point; preheat first
No, because when the pipeline freezes, its volume generally expands; once the medium thaws, the volume decreases, and the pipeline will not break.
Pipes and valves made of cast iron need to be slowly heated using hot water or steam to prevent cracking due to sudden heating~~