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    Structural Assessment of Flexible Pipes

    Reduce operational downtime and identify reserve capacity

    4Subsea is a leading expert on structural assessment and advanced analysis of flexible pipe damages and failures. We help operators maintain safe operation and reduce operational downtime. We develop and refines analytical tools and methods based on extensive accumulated experience.

    Key Deliverables

    4Subsea offers a wide range of engineering services related to risers and flowlines, umbilicals and power cables. We cover all life cycle phases, starting with technology development and conceptual design through FEED and detailed design, procurement, construction, installation, operation, and decommissioning.

    • Structural capacity of flexible pipes, considering anomalies by performing advanced finite element analysis (2D & 3D fully non-linear)
    • Modelling as-built geometry and material with observed damages
    • Planning and execution of full- and small scale test of flexible pipes
    • Planning, execution and evaluation of material tests
    • Root cause investigation
    • Operational feed-back

    Structural Assessment

    4Subsea offers specialized structural assessments to support the integrity and operational reliability of offshore assets. Through detailed analysis of material properties, capacity estimates, and operational history, our experts deliver data-driven insights that form the foundation for risk assessments and operational guidelines. These services address critical factors such as aging effects, blockage positions, and interlayer geometry, ensuring safe and efficient asset performance throughout its lifecycle:

    • Advisory services
    • Capacity estimates
    • Blockage position
    • Material properties/ageing issues
    • Cross section interlayer geometry/friction
    • Operational history, pressure & temperature scenarios
    • Basis for risk assessment
    • Operational guideline