Waiting online! ! Urgent: Leak detected during pipeline testing – how to locate it
Thread Content
As title: One of the pipes under test leaked during testing; sectional testing was carried out. Pressure testing medium: water； The length is approximately 15 km; the current pressure is around 10 MPa, with a pressure drop of about 0.1 MPa per hour. Under such conditions, how can leak points be identified more effectively? ? Everyone, please give some advice. It’s urgent – waiting online!
15KM is so long! I would like to ask the original poster whether the pipe is buried underground or exposed on the surface. If it’s on the surface, it’s easier – one can simply observe it with the naked eye to locate the leak.
Go back upstairs; the pipes are buried underground.
If testing can be done in segments, it should be carried out segment by segment to locate the leak more quickly. To those upstairs: the area where water seeps through is likely the leak point, and the pressure drop at the far end also needs to be taken into consideration.
I wonder if there are any other methods besides dividing it into sections with pipes
I’m not sure how the construction is carried out on the owner’s end. In the factory area, pressure testing has been completed first, followed by insulation and painting. Why don’t you complete the pressure testing before burying it? It’s clear that this approach doesn’t comply with the regulations
There are specialized instruments for detecting leaks in underground pipes. For detecting leaks in the underground piping systems here, we hire professional companies; you can search for them online. Also, did you start the landfilling work without even finishing all the tests?
There should be sectional valves at intervals along the 15KM length, right? They can be closed one by one for inspection. How deep is it buried? Can it be inspected through visual checks or sounds?
By closing some of the valves in the middle, pressure testing can be carried out in sections
For now, the only idea I have is to divide the 15KM of piping equally and conduct pressure tests on each section; I really can think of nothing else. If any of you have better suggestions, please share them quickly!
Your construction work is really unprofessional – you started laying pipes before even finishing the pressure testing. It’s a lesson to be learned!
. . . . My construction team does the same thing: although the instructions specify the distance between pipe welds and pipe supports, they ignore those specifications. They also don’t follow the blueprints during construction; it wasn’t until last week that they came to me asking for the blind flange diagrams. I’ve drawn the blind plate diagrams; the person who sent the images also did that, but he said there are none. In the end, I still found the base map in front of him. He had nothing left to say
Firstly, there should be valves and inspection wells along the 15 km of pipeline, allowing for sectional inspections to narrow down the area under investigation. After maintaining pressure for a certain period, check the ground to see if water emerges; if necessary, install an inspection hole at regular intervals to locate leaks. Secondly, you can try draining the water, applying a certain air pressure, and using an ultrasonic detector to locate the leak points; this should be relatively fast.
Amazing; such things can happen – it’s bizarre. . . . . . I guess someone is going to get in trouble. It is recommended to search for the leak location in segments; there should be signs of collapse, which become more apparent over time. The way Party B carries out its construction work is so arrogant; there must be some foul play behind it. We need to be careful not to get involved, and we should see what happens to these people who are acting against our interests
How deep should it be buried? If it’s not buried deep enough, it might be possible to see that the soil is wet, or that the soil in that area has been washed away. Additionally, you can try using half of the amount first to see on which side it works, and then divide that amount in half again to see if that will make the process faster.
It’s very fast to find leaks using a tracer! !
There are specialized instruments for detecting leaks in underground pipelines; water supply companies may have them. It is said that there are various types of such instruments, including those that use ultrasound and those that rely on sound detection, among others.
It’s better to follow the rules: measure the pressure first before laying the pipes! Use the binary search method; it should be faster!