How is pipe bursting done?
Pipe bursting is just one of the trenchless pipe replacement methods that are used in modern civilisation. If it’s your first time hearing about this sort of pipe replacement, you will be probably baffled on how bursting a pipe can actually aid in taking out an old pipe and replacing it with a new one. The article will hope to explain how a typical pipe bursting operation is done.
- Pipe Mapping
Pipe mapping is essentially the first process of pipe bursting process in which the pipe replacement crew examines the inner lining of the pipes in order to visualise the structure and system of the sewer pipeline better. Also, through pipe mapping and camera surveys; they will be able to find out the status of the pipes’ structure and if there are any pipes that have already been toppled or weakened.
- Ensuring smooth operation
If there are any threats against the pipe bursting procedure then it must be eliminated. Common problems that can be found in the pipeline include clogs or large obstructions. Some of these obstructions can be taken care of by the bursting head (tool used to break the existing pipes) while others can only be removed through extraction.
- Positioning of the bursting head, pulling machine, and pipes
After taking out the obstructions, the next step is to position the primary tools and supplies which are the bursting head, pulling machine, and of course, the new pipes. The bursting head is first placed into the sewer pipes. One of the end portions is attached with a steel cable that will be used by the pulling machine while the opposite side is where the new pipeline is attached. In most pipe bursting operations, HDPE is used since it’s easy to insert while still being a durable type of pipe material.
- Bursting the existing old pipes and pulling the new main pipeline
What happens after positioning all the tools and supplies is that the bursting head is forcibly pulled by the winch machine. The strong pressure from the pulling motion and the metallic bursting head will be able to fracture the pipes and enable to splinter it into small pieces. As the bursting head breaks the existing pipes; the new pipes are also pulled in to take over the main pipeline. Through this bursting method; the diameter of the size of the hole is also increased.
- Final tests for the project
The operation doesn’t end once the new pipes are in place; there are other tests to ensure that there have been no miscalculations and mistakes with the insertion of the pipe. It’s not just the integration of the pipes that need to be checked but also leaks with the outer lining of the pipes. Pressure check is also conducted to assure that the pipes will be able to withstand both external and internal pressure. After a few days since the pipes are replaced, final fittings and check-ups are done as the final process of the pipe bursting operation.