As a key initiative of the energy transition, pipeline operators are tasked with safely transporting cleaner fuels that can reduce the amount of CO2 emissions during production, transportation, and use. One of the primary fuels currently being investigated for transportation in existing and new pipeline infrastructure is hydrogen. Previous research has shown that hydrogen embrittlement occurs once hydrogen is introduced into the pipeline. This embrittlement phenomenon has shortened the life of the pipe by directly migrating toward defects such as laminations and cracks. With previous research indicating that the presence of welding steel sleeves on pipelines carrying hydrogen blends causes additional hydrogen to be present in the welds, it is critical to have additional options for remediation of these threats. Following is a discussion of integrity threats such as external corrosion, dents, manufacturing defects, and hard spots, on both new and retrofitted hydrogen pipelines, and how composites can help to safely mitigate those threats on hydrogen and hydrogen-blended pipelines.