Slip Lining

Slip lining is a trenchless technology that does not rely on the strength of the host pipe for pressure containment.  The liner is merely slipped into the host pipe with the aid of a winch, with no liner compression.

Advantages of Slip Lining:

  • Avoid costs and risks associated with pipeline abandonment.
  • Eliminate trenching and excavation costs associated with installing a new pipeline.
  • Eliminate costs and risks of protecting and backfilling every foot of pipeline trench.
  • Installation is faster than compressed fit lining because liner compression equipment is not required, reducing setup time for each “pull”.
  • Installation time is usually reduced because the process is more tolerant of pipeline ID changes.

Disadvantages of Slip Lining:

  • Loss of the structural strength provided by the host pipe results in lower pressure capability.
  • Reduced pipeline ID, reduces pipeline volume, resulting in lower throughput.
  • Slip liners typically require heaver wall thickness to achieve an adequate pressure rating, which increases the cost of materials.
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