PilgrHYm aims to contribute to the decarbonization of the energy sector by providing a European roadmap with comprehensive guidelines to assess the feasibility of safely and efficiently integrating pure H2 into existing natural gas infrastructure.

This project has received co-funding from the European Commission and the Clean Hydrogen Partnership under Grant Agreement No 101137592. This Partnership receives support from the European Union’s Horizon Europe Research and Innovation program, Hydrogen Europe and Hydrogen Europe Research.

About the project

Transporting natural gas through pipelines has been shown to be safe and efficient for decades. However, decarbonizing the European industry and reducing carbon emissions will require a significant portion of the existing pipeline infrastructure to be used for transporting gaseous hydrogen under high pressure across the continent, from production sites to end users. The pipelines, originally designed for natural gas, are not considered H2-ready, and Transmission System Operators must demonstrate their compatibility with hydrogen. The existing standards, such as ASME B31.12, are often viewed as overly conservative and not conducive to the development of pure hydrogen networks.

PilgrHYm is an ambitious R&D project that seeks to develop a pre-normative framework to support the development of a European standard. The project aims to conduct a comprehensive testing program on small-scale laboratory specimens, focusing on 8 base materials, 2 welds, and 2 heat-affected zones that are representative of the EU gas grids. These specimens will be selected after a thorough review by TSOs to address safety concerns, lack of regulations, codes, and standards, as well as research gaps related to the compatibility of current pipelines with hydrogen.

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