Protective system for underground pipes
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United States of America Patent
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-
Sep 4, 1984
Grant Date -
N/A
app pub date -
Sep 13, 1982
filing date -
Sep 13, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of protecting underground pipe from corrosion in a region in which it extends through a casing and is subject to the deleterious action of water accumulated in the casing. The ends of the casing are sealed to provide a closed chamber around the pipe. A treatment substance capable of mixing with the water and reducing or neutralizing its deleterious effect is introduced to the chamber. Thereafter a corrosion-resistant compound is pumped into the chamber to substantially fill the chamber with the compound and displace all or much of the water from the chamber.
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