EPCI Support

The project

Transportation, installation and pre-commissioning of flexible riser and flowline systems

Marine Platforms Limited is delivering the Transportation, Installation and Pre-commissioning (T&I) scope for the complete flexible pipeline system connecting the FPSO to the onshore gas pipeline via the SSIV manifold and PLEM. The scope encompasses four distinct flexible elements, each with specific length, diameter, and function requirements.

The system includes an 8″ × 295m flexible riser from the FPSO to the SSIV manifold, a 10″ × 1,310m static flexible flowline from the SSIV manifold to FLG-1, a 10″ × 65m flexible spool from FLG-2 to the PLEM, and a 10″ × 102m flexible spool from the PLEM to the OGGS hot tap location. All flexibles are supplied with end fittings and OEM ancillaries, including two DBB valves on the static flexible pipes.

Current status

LLI procurement from OEMs underway — offshore installation aligned with Q4 campaign

The Long Lead Items (LLIs) are being procured from OEM ex-works locations with international logistics coordination for customs clearance, handling, and transportation to the offshore installation site. The 8″ flexible riser and 10″ static flexible pipes are being sourced from the OEM in China, with full end fittings and ancillaries. Offshore installation is planned for Q4 2026, coordinated with the rigid pipeline and subsea structure installation campaign.

The project

Transportation, installation and pre-commissioning of 230m SSIV control umbilical

Marine Platforms Limited is executing the Transportation, Installation and Pre-commissioning of a 230m umbilical system from the platform to the SSIV manifold 2, including all termination units (TUTU, SUTA), flying leads, and jumpers. The umbilical provides hydraulic control, electrical power, and communication between the platform and the subsea SSIV system.

The scope includes all topside activities — umbilical stripping, routing up to the TUTU, termination, and integration with the platform safety system. The umbilical is being sourced from the OEM in the United Kingdom with full ancillaries, and transported to the offshore installation site with customs clearance and handling.

Current status

Umbilical procurement and J-tube engineering progressing in parallel

The umbilical LLI is being procured from the OEM ex-works location in the United Kingdom, with international logistics coordination for delivery to the offshore installation site. Detailed engineering for the umbilical J-tube — including subsea clamps and ancillaries — is underway, with assessment of piggy-backing on existing J-tubes or risers as a potentially more cost-effective alternative. A site visit to the platform has been conducted to assess the proposed J-tube route, TUTU location, and cable routing from TUTU to the Local Equipment Room (LER).

The project

Subsea tie-in of flexibles and hook-up of the complete gas export system

Marine Platforms Limited is responsible for the subsea tie-in of all export gas flexibles to the rigid pipeline, SSIV manifold, and PLEM — ensuring seamless hydraulic and mechanical integration across the entire gas export system. The scope also encompasses hook-up of the gas export pipeline system to both the FPSO and the onshore gas pipeline system.

The umbilical tie-in scope includes subsea connection of the umbilical to the SSIV manifold (SUTA) and to the platform (TUTU), with all topside activities forming part of the contractor scope. This includes umbilical stripping, routing up to the TUTU, termination, and integration with the platform control systems.

The project

Engineering, fabrication and installation of umbilical J-tube with site assessment

Marine Platforms Limited is delivering the detailed engineering design, procurement, fabrication, transportation and installation of an umbilical J-tube for the SSIV control umbilical, including subsea clamps and all ancillaries. The scope includes assessment of piggy-backing the umbilical on an existing J-tube or riser as a potentially more cost-effective alternative.

A comprehensive site visit to the platform has been conducted for on-the-spot assessment of the proposed J-tube route, ease of installation, umbilical termination end (TUTU) proposed location, and terminating cable routing from the TUTU to the Local Equipment Room (LER). The most cost-effective and safe installation methodology will be proposed following this site assessment.

The project

Full integration commissioning of the SSIV umbilical with the platform safety system

Marine Platforms Limited is delivering the commissioning scope for full integration of the SSIV umbilical with the platform safety system. This encompasses routing and termination of approximately 20m of multicore control cable (2.5mm × 16 pairs) between the TUTU and the Local Equipment Room (LER), installation of cable trays and Unistrut supports, and implementation and testing of the SSIV safety logic within the platform safety system.

The scope also includes connection of approximately 10m of 3/8″ tubing from the umbilical hose termination point on the topside to the platform Well Head Control Panel, retrofit of the Well Head Control Panel to support the FIGSS SSIV, and flushing and cleaning of SSIV hook-up tubing to NAS 6 standards before integration. Pre-commissioning support completes the scope to ensure full SSIV installation readiness.

The project

Full pre-commissioning of the complete gas export system

Marine Platforms Limited will execute the comprehensive pre-commissioning of the entire gas export system — encompassing the ~22 km rigid pipeline, all flexible flowlines and spools, the SSIV manifold, PLEM, Temporary Subsea Pig Receiver, and all associated subsea infrastructure. The pre-commissioning programme ensures system integrity, cleanliness, and operational readiness prior to handover for production operations.

The scope covers the complete sequence of pre-commissioning activities: pipeline cleaning and gauging to verify internal diameter and remove construction debris; flooding with treated water or suitable medium; hydrostatic pressure testing to verify structural integrity and leak-tightness at design pressure; dewatering to remove test medium; and drying to achieve the required dew point specification for gas service. All activities will be executed in accordance with international codes, client specifications, and regulatory requirements.

Scope of work

Integrated pre-commissioning across all pipeline and subsea assets

The pre-commissioning scope is integrated across all system components. For the rigid pipeline, this includes pig launching and receiving operations, progressive cleaning runs, gauging plate verification, hydrotest pressure hold and monitoring, and final dewatering and drying runs. For the flexible systems, pre-commissioning encompasses pressure testing of individual flexible elements, spool verification, and integration testing with the rigid pipeline and subsea structures.

The SSIV manifold, PLEM, and Pig Receiver will undergo individual pressure testing, valve function verification, instrument calibration checks, and integration testing with the pipeline system. The complete pre-commissioning programme is sequenced to align with the offshore installation campaign, ensuring efficient handover from installation to commissioning and ultimately to operations.