Reasons for the disconnection of buried condensate pipe elbows
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Reasons for the disconnection of buried condensate pipe elbows
Upload a picture and describe the problem in detail; isn’t asking the question this way too simple?
I would like to ask the experts: In a project, a buried condensate pipe elbow located beneath the indoor floor has come loose. The straight-line length of this pipe is 60 meters, and no compensator has been installed; the foundation area has also not been treated. This is the condition after digging at the site. What suggestions do professionals have?
Corrosive separation may also be caused by steam getting inside
We usually apply anti-corrosion treatments there; in over a decade of experience we’ve never seen a situation like yours. It doesn’t really matter whether there are compensators or not. I guess there’s air inside, and there’s no vent at the surface. When the container is filled with liquid properly, corrosion doesn’t reach such an extent, and the welds won’t crack either. It is recommended to apply anti-corrosion treatment to the welds; this is simple and inexpensive. A vent should also be provided on the floor-level condensate tank.
It’s probably the combined effect of corrosion, stress, and welding quality. With such a clean fracture surface, it’s hard to claim that there are no issues with the welding quality ； The large distance between the fracture points is caused by factors such as foundation settlement and thermal stress ； The first two reasons contribute to the exacerbation of corrosion; it can be said that corrosion is the main culprit, while stress and welding quality are the contributing factors.
I agree with you; backfilling for buried pipes is very important, as settlement can directly cause the pipes to break. As for pipes that are not under pressure, the welding requirements are usually not very high