Leak repair and pipeline reinforcement at girth weld of DN700 mm oil pipeline

The pipeline operator detected a leak at the girth weld of a carbon steel pipeline operating at working pressure 16 bar. The damaged weld is on an elbow with a reduction from a diameter of 28-inch to 20-inch (reducer).

Challenge

Composite repair materials cannot be installed directly over the leaking pipe. Leaks need to be stopped always before moving on. This case study describes how to stop the leak. Second challenge was the geometry of the wrapping area. Using different width carbon cloth almost every geometry can be wrapped, like in this case the reducer section of the line.

Read our casestudy