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<p>Hydrogen and CO<sub>2</sub> pipelines present distinct safety and reliability challenges due to hydrogen embrittlement, high-pressure operation, CO<sub>2</sub> decompression behavior, and the potential for brittle or ductile fracture. This study develops an integrated framework combining probabilistic risk analysis, reliability modeling, and life cycle assessment (LCA) to quantify failure likelihoods and environmental impacts across all pipeline life cycle stages. A comparative evaluation of hydrogen and CO<sub>2</sub> transport highlights differences in dominant failure modes, release behavior, and consequence severity. Results indicate that material grade selection, operating pressure, inspection intervals, and leak detection capability are the most influential parameters affecting life cycle reliability and greenhouse gas impacts. The proposed framework provides practical guidance for improving pipeline design, operation, and regulatory decision-making in emerging low-carbon energy systems.</p>

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Life cycle reliability and safety assessment of hydrogen and CO2 pipeline in energy transition

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • Karan Sotoodeh

摘要

Hydrogen and CO2 pipelines present distinct safety and reliability challenges due to hydrogen embrittlement, high-pressure operation, CO2 decompression behavior, and the potential for brittle or ductile fracture. This study develops an integrated framework combining probabilistic risk analysis, reliability modeling, and life cycle assessment (LCA) to quantify failure likelihoods and environmental impacts across all pipeline life cycle stages. A comparative evaluation of hydrogen and CO2 transport highlights differences in dominant failure modes, release behavior, and consequence severity. Results indicate that material grade selection, operating pressure, inspection intervals, and leak detection capability are the most influential parameters affecting life cycle reliability and greenhouse gas impacts. The proposed framework provides practical guidance for improving pipeline design, operation, and regulatory decision-making in emerging low-carbon energy systems.