Charge Line

See Feed LinePipeline that transports drilling fluid from the slurry separation plant to the face of the MTBM. Also known as an inlet line or charge line..

Chemical Grouting

Method for the treatment of the ground around a shaft or pipeline, using non-cementitious compounds, in order to facilitate or make possible the installation of an underground structure.

Chemical Resistance

Ability to render service in the transport of a specific chemical for a useful period of time at a specific concentration and temperature.

Chemical Stabilization

RenovationMethods of rehabilitation in which all or part of the original fabric of a pipeline are incorporated and its current performance improved. method in which a length of pipeline between two access points is sealed by the introduction of one or more compounds in solution into the pipe and surrounding ground and, where appropriate, producing a chemical reaction. Such systems may perform a variety of functions such as the sealing of cracks and cavities, the provision of a new wall surface with improved hydraulic characteristics or ground stabilization.

Chimney

The small vertical section between a manhole frame and cone which is built from brick, masonry, or concrete adjusting rings.