Understanding the current and potential risks over the lifetime of offshore cables is key to planning and budgeting maintenance operations, monitoring campaigns and potential remedial measures.
The Cable Integrity Risk Assessment (CIRA) is a management procedure designed as a repeatable process for installed cables, defining post installation cable risk, utilising a similar method to that outlined in CBRA Carbon Trust guidance.
The offshore industry may implement the CIRA process to identify the risk a cable is exposed to at its current Depth of Lowering (DoL) and recommend potential remedial activities.
The remedial protection may include continual monitoring, remedial burial or external protection. The CIRA uses site data such as the measured DoL, initially during installation, as-surveyed following installation, or during the cable’s lifetime to calculate risk profiles and recommend priority areas where remedial measures may be required, ensuring that risk is suitably managed and within acceptable limits.
