ABSTRACT
Transport of fuels by pipeline is in widespread use for oil and natural gas, but some biofuel slurry and hydrogen is also moved by pipeline, the latter mainly for industrial use. Figure 6.1 shows a section of a gas pipeline in Alaska. Moving liquid biomass products through pipelines is not different from the current use for oil. If hydrogen gains a prominent place in future energy systems, a need for pipeline transmission will arise, and questions of upgrading natural gas pipelines to transport hydrogen will be asked, considering the increased brittleness of many steel tubes when carrying pressurized hydrogen, as well as the possibly higher leakage rate in the compression units that are usually placed at intervals along the line (Sørensen et al. 2001; Gondal and Sahir 2012; Beaufumé et al. 2013).
