Underground Sewer Repair Glossary

Demystify the complex world of underground sewer repair systems - from installation techniques to tools and technologies. Whether you're a seasoned professional or new to the field, our glossary ensures you have the knowledge at your fingertips to manage and understand underground piping projects with confidence.

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a B C D E F g h I J K L m N O p Q r s t U V W X Y Z

Slip Lining

CIPP

Trenchless

Pipe Bursting

Annular Space

The space between a newly installed liner and the existing pipe in trenchless rehabilitation projects. Proper filling of the annular space is crucial for the structural integrity and performance of the liner.

Close-Fit Pipe

A trenchless rehabilitation technique where a new pipe, with a slightly smaller diameter, is deformed into a U-shape, inserted into the old pipe, and then reformed to fit closely to the inner surface of the existing pipe.

Cured-In-Place Pipe (CIPP)

A method where a resin-saturated felt tube is inverted or pulled into a damaged pipe and then cured to form a tight-fitting, corrosion-resistant new pipe within the old one. It's widely used for repairing leaks or damages without digging.

Grouting

The process of injecting a fluid material into the ground or pipes to fill cracks, voids, or annular spaces. Grouting is used to improve soil stability, reduce water flow, and seal joints in trenchless pipe repair.

Horizontal Directional Drilling (HDD)

A steerable, trenchless method of installing underground pipes, conduits, and cables in a shallow arc along a prescribed bore path by using a surface-launched drilling rig. It's beneficial for crossing obstacles like rivers and highways.

Manhole Rehabilitation

The process of repairing and restoring manholes, which provide access to underground utility systems. Techniques can include grouting, lining, and coating to protect against corrosion and infiltration.

Microtunneling

A digging technique used to construct small tunnels. It involves a remotely operated boring machine, a pipe jacking system to push pipes underground, and guidance systems to maintain alignment. It's useful for laying pipes in congested areas.

Pipe Bursting

A trenchless method for replacing buried pipelines, such as sewer, water, or natural gas pipes, without the need for a traditional construction trench. A bursting tool is used to break the old pipe apart and simultaneously pull in a new pipe.

Pipe Jacking

A method of tunnel construction where hydraulic jacks are used to push pipes through the ground behind a shield machine, from a launching shaft to a reception shaft. It's often used for installing large diameter utility pipes.

Point Repair

A method for repairing small sections of pipe with localized damage. A patch or short liner is applied to the damaged area without the need to repair or replace the entire pipe length.

Robotic Pipe Repair

The use of robotic systems to inspect, clean, and repair pipes from the inside. These robots can navigate through pipes, apply sealants, and even install liners without the need for excavation.

Sewer Robotics

Advanced robotic systems designed for sewer inspection and repair. These can include cameras for inspection, cutting devices for removing obstructions, and systems for applying liners or sealants.

Slip Lining

A technique where a new pipe is inserted into an existing pipe. The new pipe is usually made of materials like plastic and is smaller in diameter. It's a quick and cost-effective way to repair deteriorated pipelines.

Thermoformed Pipe

A trenchless rehabilitation method that uses heat to mold a new pipe liner inside an existing pipe. The process involves pulling a folded PVC liner through the pipe, then using steam or hot water to expand and form-fit the liner to the pipe walls.

Trenchless Technology

A set of methods used for installing or repairing underground pipes without the need for extensive excavation. It's designed to minimize surface disruption and is used in various applications, including water, sewer, and gas lines.

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