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Quantitative Risk Assessment of Steam Reforming Process by Hydrogen Generator, Using PHAST Model

Author

Listed:
  • Jongseok Lee

    (Department of Environmental and Safety Engineering, Ajou University, Suwon 16499, Republic of Korea)

  • Hyunjun Kwak

    (Department of Environmental and Safety Engineering, Ajou University, Suwon 16499, Republic of Korea)

  • Seungho Jung

    (Department of Environmental and Safety Engineering, Ajou University, Suwon 16499, Republic of Korea)

Abstract

This study applied a risk assessment technique to the steam reforming process in hydrogen production facilities to generate baseline data for preparing safety protocols in related workplaces. To this end, consequence analysis (CA) was conducted using DNV-PHAST v.8.9., focusing on the reforming process, which operates at the highest temperature and pressure among related processes. This study predicted jet fire damage resulting from the total failure of a 65 mm syngas pipe at the rear end of the reformer, with a projected flame length of up to 23.6 m based on a radiant heat of 5 kW/m 2 . As per the assessment, a vapor cloud explosion (VCE) caused damage of up to 42.6 m at an overpressure of 0.07 bar (1 psi), while a flash fire had an impact range of approximately 12.7 m based on hydrogen’s LFL (lower flammable limit). This quantitative risk assessment of the general steam reforming process provides valuable basic data for the design and operation of related facilities.

Suggested Citation

  • Jongseok Lee & Hyunjun Kwak & Seungho Jung, 2024. "Quantitative Risk Assessment of Steam Reforming Process by Hydrogen Generator, Using PHAST Model," Energies, MDPI, vol. 17(22), pages 1-12, November.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:22:p:5704-:d:1521223
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    References listed on IDEAS

    as
    1. Bo-il Jeon & Shinji Kim & Yeo Song Yoon & Seungho Jung, 2023. "Quantitative Risk Assessment of Hydrogen Refueling Station in Cheonan City of South Korea," Energies, MDPI, vol. 16(20), pages 1-14, October.
    2. Jongbeom Kwak & Haktae Lee & Somin Park & Jaehyuk Park & Seungho Jung, 2023. "Risk Assessment of a Hydrogen Refueling Station in an Urban Area," Energies, MDPI, vol. 16(9), pages 1-18, May.
    3. Swithin Lui & Takeshi Kuramochi & Sybrig Smit & Mark Roelfsema & Angel Hsu & Amy Weinfurter & Sander Chan & Thomas Hale & Hanna Fekete & Katharina Lütkehermöller & Maria Jose de Villafranca Casas & Le, 2021. "Correcting course: the emission reduction potential of international cooperative initiatives," Climate Policy, Taylor & Francis Journals, vol. 21(2), pages 232-250, February.
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