Scope
The line had the following specifications:
| Structure | Amine Line |
| Surface Preparation | Sa2.5 |
| Class Approval | N/A |
| Design Pressure | 5 bar |
| Design Temperature | 95 °C |
| Application Temperature | 60 °C |
| Design Life | 5 years |
| Wrap / Repair Length | 420mm |
| Pipe Diameter | 40" |
| Geometory | Reducer |
| Corrosion Type | Weld Crack |
| Defect Details | 15mm circumferential crack |
Overview
A 40” Amine Line had suffered stress cracking in the weld line due to vibration and loading conditions during operation. This stress cracking had lead to a through wall defect which the ICR.IAS JV technicians were able to provide a live leak seal without loss of production.
The ICR.IAS JV engineers were able to design a composite repair solution to withstand the loading/vibration conditions with the application completed whist the plant was still in operation.
Solution
- Technowrap™ 2K HT system with temperature capability up to 220°C
- Carbon Fibre (SRS) selected due to its increased structural rigidity
- Limited landing design to fit within geometric constraints
Benefits
- A live leak seal allowed the line to remain in production avoiding unnecessary shutdown
- Quick turnaround from consultation and engineering through to site mobilisation and execution
- Chemical compatibility with line medium removing any risk of future degradation
Project Images
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