Boltight Solution for Subsea Innovation’s Pipeline Repair Clamp

Boltight has provided bolt tensioning solution for Subsea Innovation’s structural split repair clamps on the EPRS bound for the project based off the north and northwest coast of Australia

Two sizes of bolt tensioners were produced – M120 and M150 – which were used to tighten the main bolts located around the clamp body. These are activated remotely using a hydraulic control system.

The tensioners were designed to Subsea Innovation’s specifications. They operate in both directions so can be reset without recovery to the surface.

The two companies worked together to agree testing and operational specifications on this system. The EPRS in Australia will act as a contingency in the event that the main gas pipeline needs to be repaired.

Boltight commercial and project manager, Nitin Patel, said: “We knew this was an important piece of work. Transporting oil and gas subsea is vital to energy supply. This sort of project demanded the highest specifications and a tight turnaround. We also needed to ensure the bolt tensioners could reset without recovery needed at the surface. The project was a perfect example of Boltight’s ability to demonstrate its ability to develop and supply complex Bolt Tensioning solutions, working with an experienced client who required complex integration into its overall solution.”

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