Flexassure non-invasively detects breaks in the tensile armour wires of a flexible riser
Pulse
Flexassure
A new flexible riser integrity-monitoring system from Pulse Structural Monitoring has achieved a 100 per cent success rate in a rigorous dynamic test process.
Flexassure uses non-invasive sensors to detect breaks in the tensile armour wires of a flexible riser, building a detailed picture of structural integrity and alerting the user to early signs of deterioration.
When a tensile armour wire breaks, load is transferred from this wire to the remaining armour wires.
During this event, the flexible riser experiences a sudden movement with axial, rotational and acoustic characteristics, which Flexassure detects using a combination of five sensors and an algorithm.
Key specifications
- Comprises monitoring hardware, a real-time data-acquisition system and data-processing interface
- Developed, tested and qualified in Brazil, where flexible risers are responsible for transporting approximately 80 per cent of offshore production, amid challenging conditions
- Can be installed on a new riser to provide integrity assurance throughout its lifetime, or retrofitted to an existing riser where there may be concerns over its remaining life
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