Shanghai Dredging Company Ltd. (SDC) has requested CDR International B.V. to perform a siltation assessment of the Dangote Pipeline Trestle project. The Nigerian Dangote Pipeline Trestle Project is a sub-project of the refinery and petroleum/petrochemical project carried out by the Nigerian Dangote Oil Refining Company Ltd. (DORCL) in the Lekki Free Trade Zone, Lagos State, Nigeria. The objective of the study was to determine the siltation after trench excavation.

CDR has carried out the following services:

  • Numerical estimation of sedimentation rates of the pipeline trenches by CDR’s gained morphological knowledge of the area in combination with application numerical models (Delft3D and SEDPIT). Results are presented over time and along the each trench separately, resulting in comprehensive tables and figures;
  • Support and advice in construction aspects of trenches, including backfilling methods and identified risks of pipeline floatation.