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Overview

The StrongPIPE® XPT™ External Post-Tensioning System allows pipeline repairs and upgrades to be implemented when segments cannot be shut down.

This technology consists of a high-strength steel strand, coated and sheathed in extruded plastic for corrosion protection, and an anchorage assembly. The strand is looped around the host pipe and stressed at the anchorage utilizing hydraulic jacks.

Highly customizable, StrongPIPE® XPT™ accommodates pipelines that are 42 inches in diameter and above, as well as a variety of shapes and materials, particularly prestressed concrete cylinder pipe (PCCP).

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System Features

  • Standard production is for pipe with internal diameter of 42 inches and above
  • Particularly well-suited for prestressed concrete cylinder pipe (PCCP) and suitable for other pipe materials
  • No access to the pipeline interior required
  • Corrosion-resistant encapsulated strand and anchorage
  • Rapid installation process
  • Variable structural capacity, depending on location in pipe
  • Fits straight and curved pipe sections
  • Withstands design operating pressure

Functions

  • Restores full functional capacity of pipe under pressure
  • Can be used to upgrade/increase the structural capacity
    of an existing pipe (undamaged) allowing increased
    pressure and commensurate fluid flow rate
  • Increases hoop strength

Benefits

  • Work performed while pipeline remains in service
  • Excellent for localized repairs
  • Minimal downtime and impact to operations
  • All access to pipe from outside of pipe
  • When performed in conjunction with pipe excavation,
    repairs of damaged concrete is accomplished
    simultaneously

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