3C Subsea, an approved vendor of HMH, has completed a riser repair and recertification project onboard the Scarabeo 9 semisubmersible drilling rig, operated by Saipem, in Egypt.

The scope of work covered 28 choke-and-kill lines and 12 booster lines on the vessel’s HMH QTR drilling riser system. Approximately 40 riser joints underwent full repair and recertification, including disassembly, weld repairs, non-destructive evaluation, pressure testing, painting and reassembly. The replacement of worn-out boxes was also included in the scope.

The work was executed at Saipem’s Abu Qir yard in Alexandria, where 3C Subsea established a temporary outdoor welding workshop to support the project.

The 3C Subsea team mobilized in December 2025 to establish the yard and workshop infrastructure, followed by a second team in January 2026 to begin repair and recertification activities. Specialized equipment was mobilized from South Africa and Norway to support the repairs.

As field execution vendor, 3C Subsea worked under the technical supervision of HMH, which provided engineering support and on-site oversight to ensure compliance with OEM specifications and applicable international standards. HMH also supported HSSE performance through risk assessments, toolbox talks and procedural controls.

The project was completed with zero lost time injuries and zero incidents.

3C Subsea thanks HMH and Saipem for their collaboration and support throughout the execution of this project.