Assessment of Operability and Inspection, Maintenance and Repair Requirements for Transmission Pipelines and Installations in Hydrogen Service

This report has been prepared for Hytechnical work programme to support the technical strategy for repurposing existing transmission pipelines and installations for the transportation and distribution of hydrogen and natural gas / hydrogen blends. The aim of the Hytechnical work programme is to support the implementation of the IGEM supplements to the standards TD/1, TD/13, TD/3 and TD/4.
The report covers a desk study into the requirements for the inspection, maintenance, operation and repair of above 7 bar natural gas pipelines and installations designed and operated in accordance with the standards existing IGEM/TD/1 and IGEM/TD/13 which are repurposed for hydrogen service.