Dexon’s Unpiggable Pipeline Inspection Archive

With over 471 unpiggable pipeline inspections completed to date, Dexon Technology offers completely
customized inspection solutions for the inspection of unpiggable pipelines. The following is a selection of
unpiggable in-line inspection case studies from Dexon’s Unpiggable or “Challenging” Pipeline Inspection
Archive.

Case Study #471: Small Diameter (3”) Long-Range Unpiggable In-line Inspection in South America

Pipeline Engineer Mr. Panuset from Dexon’s pipeline inspection department poses for a picture with the client and a customized 3” ILI following the inspection of a 32km distribution pipeline in South America.

The Challenge

  • 3” small-diameter inspection of a long-range 32 km distribution pipeline (Typical 3” transfer
    lines run for only a few hundred meters in a single plant).
  • Pipeline characteristics such as weld penetration can cause significant internal diameter
    restrictions in small-diameter pipelines.
  • A lack of previous inspection data with this being the first inspection for this pipeline.
  • Online inspection required.

Click here for the solution and to read the full case study.

Case Study #327: S(P)BM Loading Line In-Line Inspection

DEXON pipeline engineers preparing subsea launcher for installation at PLEM below SBM

The Challenge

  • Standard inspection calls for Bi-directional inspection requiring extensive support equipment
    • Surface support vessel
    • Onshore and offshore pumping stations
    • Onshore pumping medium storage tank and offshore slop tank
    • Pumping medium treatment
  • Single direction inspection required
  • Online inspection required

Click here for the solution and to read the full case study

Case Study #276: Multiple diameter underground road crossing pipelines

Dexon pipeline engineers prepare to remove a UT-MC from the receiver following an inspection

The Challenge

  • Multiple internal pipeline diameters
  • Back-to-back bends
  • Lack of launchers and receivers
  • Absence of prior inspection data

Click here for the solution and to read the full case study

Case Study #087: 17 Short-Length Urban Road Crossing Pipelines

handheld ultrasonic rotary ILI being hand loaded into a detached flange

The Challenge

  • No Launchers/Receivers
  • High number of short pipe sections
  • Low cost” simple solution required
  • Time constraints

Click here for the solution and to read the full case study