f MOBs Phase 3: Task 2 - Building Surveys

There is a requirement for gas distribution network (GDN) operators to understand the cost, safety, and practicality of converting network pipelines from supplying natural gas to hydrogen in multi-occupancy buildings (MOBs).
SGN is leading a feasibility project with some applied testing to understand the steps needed to convert MOBs to Hydrogen. The program is formed through 4 main work packs broken down into 2 main stage gated programmes (Part A = WP1, 2 & Part B = WP3, 4).
Surveys of 18 multi-occupancy buildings of various heights, ages and construction methods were undertaken to:
1) identify issues specific to building types/architectures and gas installations that could affect a conversion to hydrogen and
2) collect data that will feed into the development of the QRA (Task 1), the analysis of network capacity (Task 3), the assessment of ventilation of enclosures, ducts and dwellings (Task 4) and the assessment of fittings present in gas installations in MOBs (Task 5)
This report was submitted to HSE for their assessment of the safety evidence for 100% hydrogen heating, which can be found at Hydrogen heating: HSE assessment of the safety evidence - GOV.UK.
Queries should be directed to DESNZ: https://www.gov.uk/guidance/contact-desnz.