Integrity issue

A 8 inch produced water pipework was suffering from internal corrosion. Localised internal corrosion had caused severe pitting which was expected to do through wall within months. It was proposed to use a Futurewrap composite repair to reinstate the integrity of the pipework.

Design 

The design of the Futurewrap repair was according to ISO 24817.  The design approach was for pipework strengthening and leak sealing. The design parameters were; internal pressure 19.6 bar, temperature 400C, design lifetime 2 years, through wall defect size 25 mm diameter. The repair design resulted in a thickness of 5.1 mm (8 layers) of Futurewrap Glass/LT composite repair with an axial length of 750 mm.

Installation

The installation steps are shown in the photographs. The pipework was depressurised. The surface preparation was to ST2. Full QA/QC measurements were made to demonstrate that the Futurewrap repair was applied in accordance with ISO 24817.

Summary

A 8 inch produced water pipework suffering internal corrosion was repaired using Futurewrap Glass/LT composite repair.  The repair was completed within 2 days allowing the pipework to be re-pressurised returning the pipework to its original integrity.