The United Kingdom Atomic Energy Authority (UKAEA) requirement is for the procurement of a process services system for the Hydrogen 3 Advanced Technology facility at Culham. Included is the supply of Demineralised Water, Breathable Air Supply, Plant Air Supply, Compressed Gas Supply, Specialist Gas Compound with Segregation. The contractor is responsible for the design, manufacture, assembly, Factory Acceptance Testing, delivery and installation, operational qualification, Site Acceptance Testing (SAT), handover, conformity assessment and support for all the installed equipment and pipework required. The scope of work is expected to be delivered by March 2026, with an estimated duration of 23 months. The proposed form of contract is the NEC4 Engineering Construction Contract (ECC) Option A, for a fixed price. There may also be the need for additional ad hoc work not defined within the Scope of Works, which will be reimbursed for which bidders are asked to provide a schedule of rates.