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| Image: diver working/Harkand |
Harkand has carried out the first-ever free inertial metrology in Mexico's waters and at a new depth for this approach in the region.
The global inspection, repair and maintenance company achieved the survey results for their client at a depth of 380ft in the Bay of Campeche, setting a new record in the area.
The scope of work saw Harkand working in collaboration with their metrology technology partner Zupt to complete the survey project in support of the installation of an expansion spool piece for a new pipeline and platform campaign in Mexico.
“Although a diver had not performed inertial metrology in this water depth before, we were confident in our saturation diving team’s experience and capabilities,” said AJ Jain, Harkand managing director North America and Africa. “Our client had the results in just 12 hours allowing the expansion spool piece design and fabrication to proceed very quickly.”
The expansion spool piece was fabricated onboard the vessel in two days, with the Harkand saturation diving team successfully installing the spool piece without any issues.
“In subsea survey, project planning is essential. It’s key to consider all the factors including the environmental and project specific ones before proposing the best method of metrology,” said Jain.
Subsea metrology is the process of acquiring accurate and traceable dimensional measurements for the design of subsea structures. Established over eight years ago to the offshore industry, the inertial metrology technique use accelerometers and gyros to map out a grid position based on a reference point and velocity and attitude changes.
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