Looking after the safety of homeowners, tenants and building users at Keele is the most important aspect of HyDeploy.
The Health & Safety Laboratory are on board to help the project team manage the safety risks.
Before hydrogen can be injected into the network at Keele University the UK Health & Safety Executive (HSE) needs to be satisfied that it will not present increased risks to those that may be affected by it, including members of the public and employees.
The safety of customers and the public is protected through The Gas Safety (Management) Regulations (GS(M)R) which regulate the delivery of gas in the UK. These regulations are managed by the Health & Safety Executive.
Currently GS(M)R only permit 0.1% volume of hydrogen in the gas network, despite formerly distributing town gas with 40-60% hydrogen. This limit was set after the discovery of significant quantities of North Sea gas which, at the time, would supply the UK for the foreseeable future.
Under these regulations, there is a formal process allowing permission to be sought from the HSE to vary particular attributes of the gas being delivered.
HyDeploy will be seeking an exemption to GSMR to allow up to 20% volume of hydrogen to be injected into the Keele network.
A comprehensive report will be presented to the HSE including:-
- Evidence from previous research and studies on hydrogen in the gas network.
- Laboratory research carried out for HyDeploy by the Health & Safety Laboratory, Kiwa GasTec and Keele University. This includes testing of domestic gas appliances, pipe materials and flame behaviour.
- Data gathered from the safety checks on gas appliances on the Keele University network.
- A recommendation of the a safe hydrogen blend for use in the live trial.
The HSE will evaluate the exemption application and make a decision about whether an exemption will be granted. If so, the volume of hydrogen that can be distributed.
The HSE must be satisfied that the hydrogen blended gas is ‘as safe as natural gas’ to give permission for it to be distributed through the Keele network. If the HSE is satisfied that it poses no greater risk to safety, and grants permission, then the gas is compliant with the regulations under the terms of the permission, and can be supplied to customers as normal.