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What Is Line Stopping?

Line stopping is a specialized technique used to halt the flow of fluids in a pipeline without shutting down the entire system. This method allows for repairs or modifications without disrupting service. It's a cost-effective, safe solution for maintenance and emergency interventions in various industries. Intrigued by how this process can benefit your operations? Let's examine its applications and advantages further.
Mary McMahon
Mary McMahon
Mary McMahon
Mary McMahon

Line stopping is a technique to allow operators to tap into and stop a line when no service valve exists. This can allow people to work on plumbing while a system is still active and pressurized to prevent stoppages. Firms specializing in this service are available to perform it in many areas. Some utilities and other companies also maintain their own line stopping crews because they need to perform this procedure often enough that an on-call team is merited.

When a problem arises in a line, it is necessary to clear the line so technicians can work on it. This could require activation of a shutoff valve to cut the flow of fluid, gas, or other materials in the line, which would result in a stoppage. Whatever is supplied by the line in normal conditions will not get materials anymore, which could be a critical problem in the case of a line that supplies something like oxygen to hospitals, or water to homes.

Line stopping is a technique that can allow work on plumbing while a system is still active and pressurized to prevent stoppages.
Line stopping is a technique that can allow work on plumbing while a system is still active and pressurized to prevent stoppages.

Conversely, the shutoff could create a problem from the other end; people need to be able to flush toilets, for example. If a city needed to do work on the sewer system for more than a few hours, a public health problem could arise if they activated shut offs and no longer allowed homes and businesses to access the sewer. Line stopping can allow for work on such sensitive systems without disrupting the service.

In a technique also known as hot tapping, operators fix a pipe at an angle and drill through to create access to the working line. Material from the line naturally flows into the new pipe, which can be opened and closed with a valve. The pipe can be connected to another point along the line in question to bypass the area that needs repair or inspection, and a block can be placed in the line to force the contents into the new pipe. The line stopping bypass supplies a clean flow of material, while exposing a section of pipe for work.

The line stopping process can allow for bypasses on both short and long distances, for varying periods of time. Some care may be necessary with pipes that carry dangerous materials like sewage or corrosive chemicals. The technicians need adequate training to secure the contents of the line and may need to wear protective gear while they perform the hot tapping procedure. When the work is done, they can release the line stop, fix the hole they created, and remove the bypass piping.

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a AboutMechanics researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a AboutMechanics researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...

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    • Line stopping is a technique that can allow work on plumbing while a system is still active and pressurized to prevent stoppages.
      By: hansenn
      Line stopping is a technique that can allow work on plumbing while a system is still active and pressurized to prevent stoppages.