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Case study – 8 inch produced water pipework

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 the next few 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. The repair design resulted in a thickness of 5.1 mm (8 layers) of Futurewrap Glass/LT and axial length 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
8 inch produced water pipework suffering internal corrosion was repaired using Futurewrap Glass/LT. The repair was completed within 2 days allowing the pipework to be re-pressurised and the pipework was returned to its original integrity.

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