Partners: All UK GDNS, DNV-GL, HSE Laboratories

Funding: Network Innovation Competition (NIC)

Now a £10.3 million collaborative gas industry programme, the H21 NIC work will deliver the quantified safety evidence necessary to inform a government policy decision on hydrogen for use in the existing gas network. Split into two phases:

Phase 1a: Aims to establish whether there will be any changes in leakage levels to the UK’s low/medium/intermediate pressure gas distribution network assets when pressurised with 100% hydrogen. A purpose-built test facility has been built for controlled testing of network pipes, valves, joints and fittings, at the Health and Safety Laboratories site in Buxton, Derbyshire, to achieve this.

Phase 1b: will involve ‘consequence’ testing and ignition testing trials at DNV-GL’s research centre at RAF Spadeadam in Cumbria, examining various characteristics of how hydrogen behaves in comparison to natural gas.

The testing has been split into four packages, each requiring a distinct build, analysis and experimental phase.