Have you ever worked on a live pipeline active under high pressure? If yes, you can easily determine the working conditions under such situations. Workings on live pipelines possess heavy danger to the lives of people and it is important to take necessary precaution at the maximum. However, with the advancements in technologies have resulted in greater security and safety and one such technique is line stopping which can be defined as a mechanical way of creating a temporary isolation in a live pipe. This is done of pipelines where some flow exists and there is no possibility of complete freezing, or a total shutdown is out of scope.
The best thing about this process is that an engineer can perform various kind of work on the pipeline while not disturbing its flow which also avoids the chances of complete shutdown. It can be done on most common pipeline materials such as Steel, Cast Iron, Ductile Iron, Copper, Stainless steels, Plastics and Cement Asbestos.
A customized fitting is either welded or bolted to the live pipeline using valves. Under pressure drilling is done whenever required to install the line stopping equipment. In case a bypass is required, it is installed during the initial set up which ensures uninterrupted flow in the main line.
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