Work package 3
Hydrogen appliance certification
guidance on the development and testing of hydrogen appliances
Hydrogen appliances are certified under GAR (Gas Appliance Regulation). These regulations provide guidance on the testing and certification of hydrogen gas appliances for notified bodies and appliance manufacturers.
BSI has developed a new publicly available standard, PAS 4444, to be used primarily on the Hy4Heat programme but the aim is that it can form the basis for widescale standardisation of hydrogen-fuelled appliances. This is a guide to be followed by appliance manufacturers regarding functionality, safety, installation, operating and servicing requirements for their hydrogen-fuelled and hydrogen/natural gas dual-fuelled or converted appliances.
27 April 2020, PAS4444:2020 published
Published by BSI, PAS 4444:2020 gives guidance on the development and construction of hydrogen-fired gas appliances, which are either purpose-built to use hydrogen or are designed to be converted to use hydrogen. While the standard has been written primarily to support the Hy4Heat programme it can also form the basis for wide-scale standardisation of hydrogen-fuelled appliances, by providing principles for manufacturers regarding the safety and functionality of hydrogen-fuelled and hydrogen/natural gas dual-fuelled or converted appliances, including: boilers, cookers and fires.
2 December, 2019 PAS4444 public consultation
Industry stakeholders are being encouraged to give comments on the draft PAS4444 (guidance on the development and testing of hydrogen appliances) through the BSI Standards Development Portal . Comments can be submitted until midnight on 10 January 2020. Responders need to register, for free, and organisations are asked to collate responses so that one per organisation is submitted.
14 MAY 2019, PAS4444 is the number
PAS4444 will be the number for the hydrogen publicly available standard, when it’s published. BSI presented at our WP4 phase 2 kick off event on May 14th 2019.
30 November 2018, BSI contract awarded
BSI has been appointed to develop a new PAS, to be used primarily on the Hy4Heat programme
7 August 2018, Engagement event on domestic hydrogen appliance certification
This session explains our planned approach to testing and certifying hydrogen appliances. There’s also the chance for networking with industry colleagues
30 April 2018, survey of Notified Bodies and Test Labs in the UK and Europe
The survey results indicated that hydrogen appliances could be certified under the current GAR and that the majority of Notified Bodies have the ability and capability to certify appliances. All those surveyed identified there were risks specifically relating to the testing of hydrogen appliances, this including leakage detection, engineering practices to be adjusted, potential higher explosion risk, the need for holistic assessment for risk similar to natural gas or LPG.