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Chemical process risk assessment utilizing SDG and CBR methodologies
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Wentao CHEN1, Mingkai YANG2, Wenhe WANG2, 3, Hongwei SONG2, Chao SUN1
China Safety Science Journal | 2025, 35(3) : 77 - 84
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China Safety Science Journal | 2025, 35(3): 77-84
• Safety engineering technology •
Chemical process risk assessment utilizing SDG and CBR methodologies
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Wentao CHEN1, Mingkai YANG2, Wenhe WANG2, 3, Hongwei SONG2, Chao SUN1
Affiliations
  • 1 Information Research Institute，MEM，Beijing 100029，China
  • 2 College of Safety Science and Engineering，Chongqing University of Science and Technology，Chongqing 401331，China
  • 3 Chongqing Key Laboratory of Oil and Gas Production Safety and Risk Control，Chongqing 401331，China
Published: 2025-03-28 doi: 10.16265/j.cnki.issn1003-3033.2025.03.1368
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To comprehensively and efficiently analyze and evaluate chemical process risks，a risk analysis and evaluation auxiliary system for chemical processes was designed and developed based on SDG and CBR. The system was integrated with foundational verification functions for layer of protection analysis (LOPA) and safety integrity level (SIL)，enabling semi-quantitative risk analysis and evaluation. Additionally，CBR technology was utilized to effectively preserve and reuse historical case experiences in chemical processes，thereby enhancing the efficacy of HAZOP and the auxiliary evaluation system. The system was applied to conduct a risk evaluation of the propylene oxidation to acrylic acid process. The results demonstrate that the system aligns closely with the independent risk evaluation outcomes of the enterprise，exhibiting strong practicality and reliability. The SDG-CBR coupling reasoning mechanism is verified to overcome the reliance of traditional HAZOP on manual experience，achieving a qualitative-to-semi-quantitative transformation in hazard identification while enhancing evaluation efficiency and accuracy.

signed directed graph (SDG)  /  case-based reasoning (CBR)  /  hazard and operability analysis (HAZOP)  /  chemical process  /  risk assessment
Wentao CHEN, Mingkai YANG, Wenhe WANG, Hongwei SONG, Chao SUN. Chemical process risk assessment utilizing SDG and CBR methodologies[J]. China Safety Science Journal, 2025 , 35 (3) : 77 -84 . DOI: 10.16265/j.cnki.issn1003-3033.2025.03.1368
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Year 2025 volume 35 Issue 3
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2025.03.1368
  • Receive Date：2024-10-14
  • Online Date：2025-07-05
  • Published：2025-03-28
Article Data
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History
  • Received：2024-10-14
  • Revised：2024-12-18
Funding
Affiliations
    1 Information Research Institute，MEM，Beijing 100029，China
    2 College of Safety Science and Engineering，Chongqing University of Science and Technology，Chongqing 401331，China
    3 Chongqing Key Laboratory of Oil and Gas Production Safety and Risk Control，Chongqing 401331，China
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