Offshore Site Investigation for Subsea Structures & Pipelines - Part 2
The size of the project, the location of the project, the water depth and phase of the project would all be a large factor in defining an offshore S.I scope of work. Have you performed a risk assessment to define the main requirements of the S.I (where is your soils risk)?
If the schedule allows, the Geophysical S.I should be performed first as this will give an immediate indication of major issues (slopes, geohazards, rock outcrops, shallow gas) within the corridor of proposed subsea architecture installation.
Geotechnical sampling can then also be planned/targeted in areas of interest as identified from the preliminary geophysical interpretation. Are specifc cores required to allow a geohazard assessment to be performed?
When both geophysical and geotechnical data has been acquired it is vital that the data is integrated such that interpretation of geophysics is aided by the geotechnical ground truthing. This may take the form of a ground model and / or a fully integrated GIS suite of data.
Laboratory testing on Geotechnical samples should be planned in accordance with design requirements, thus it is key to identify the expected foundation solutions early in the project. Laboratory testing type or specification should be determined with specific foundation types in mind.
Undertaking the correct S.I for the project is critical for the mitigation of future risk for all parties involved and can lead to significant cost savings in design and thus fabrication / installation.
For full videos you can visit this link :
https://drive.google.com/file/d/12erc9zC5NaD0sos5FT218q7Jp4MTMPTg/view?usp=sharing
and you will be directed to a google drive link where you can download all files of this course
https://drive.google.com/file/d/1f-ATZbDYIc_sZFDNJ5WjpYE6zakEYUpn/view?usp=drive_link
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