BE-13 Renovation: Lining with Cured-In-Place Pipes - Final Work, Accep...

Lining Observations


Possible cause of damage

Sub-assembly of the lining tube. The resin matrix is displaced into the outer area of the liner. As a result, the fibre portion in the supporting structure may have too little resin.


  • Reduction of the statically effective wall thickness
  • Formation of an annular gap
  • Weakening of the CIPP liner

The defect is difficult to detect by qualitative inspection (CCTV) from inside.


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