Isle of Grain LNG

Murphy was selected as National Grid Ventures’ delivery partner to design and build the ‘Main Site Works’ workstream of ‘Capacity 25’ – Grain LNG’s capital expansion and enhancement project. Prior to the expansion, Grain LNG delivered circa 25% of the UK’s gas demand. The goal of the expansion was to raise this to one third.

As part of creating additional capacity requirements for National Grid’s LNG terminal, our role comprises:

• engineering, procurement and construction of two additional submerged combustion vaporisers and associated equipment (rated capacity 173 tonnes/hour);
• two additional ex-tank pumps (rated capacity 440m3/hour);
• a new Boil Off Gas (BOG) compression building, housing three reciprocating compressors; and
• a new local equipment room adjacent to the new BOG building for electrical supplies, instrumentation and control signals to the new BOG compression facilities.

With our One Murphy approach, our specialist internal capability teams successfully completed the piling within the live site and the welding fabrications on site. Murphy is also delivering the Electrical, Control and Instrumentation (EC&I) packages as well as installing structural steelwork. In the course of the project, Murphy has:

• reduced our carbon emissions by over 90% by using Hydrotreated Vegetable Oil (HVO) to fuel our plant and equipment;
• safely worked over 325,000 hours in 2023; and
• completed the installation of over 600 piles within the live Control of Major Accident Hazards (COMAH) regulated site.