We have extensive experience in the assessment of seabed dynamics at the landfall for offshore pipeline and cable and their impact on the design of pipeline and cable
To achieve a technically feasible and cost-effective definition of burial depth while securing long-term pipeline and cable integrity, the following approach is followed:
- Determine seabed variability, consisting of short term (seasonal and yearly) variations and long term variations (time scale of 10 years).
- Combine both short term and long term variations, resulting in the lowest seabed level during the design life.
- Determine the required burial depth based on the long term integrity (stability, free span and risk analysis).
The approach combines statistical analysis of seabed data and risk analysis for a pipe or cable. The required burial depth is determined such that the overall risk for the pipe is below a specified design criterion.