TY - JOUR
T1 - Integrated methodology for safety analysis based on a system-theoretic approach and numerical simulation
AU - Zhu, Jingyu
AU - Meng, Huixing
AU - Zhang, Shaoyu
AU - Chen, Guoming
AU - Abbassi, Rouzbeh
AU - Meng, Xiangkun
N1 - Publisher Copyright:
© 2024 The Institution of Chemical Engineers
PY - 2024/6
Y1 - 2024/6
N2 - The System-Theoretic Process Analysis (STPA) method is a recognized approach to system safety analysis. However, it still has inadequate capabilities for quantitative safety analysis. To overcome this limitation, an integrated methodology was investigated for quantitative safety analysis of the complex socio-technical system that combines a system-theoretic approach and numerical simulation. In the proposed methodology, STPA method is utilized to reveal potential unsafe control actions (UCAs) and corresponding causes based on the operational principle of the target system from systemic perspective. Moreover, the consequences of identified UCAs can be quantified and safety constraints also can be improved to prevent UCAs using numerical simulations. As a complex system, the blind shear ram preventers (BSRPs) in deepwater drilling activities, with tightly interacting diverse subsystems or components, is employed to illustrate the applicability of the methodology. The results verified that the proposed methodology could evaluate potential hazards and quantify the analysis results. These results will be helpful for the design and safe operations of the BSRP system. The developed methodology has the potential to be used for safety analyses in other process industries.
AB - The System-Theoretic Process Analysis (STPA) method is a recognized approach to system safety analysis. However, it still has inadequate capabilities for quantitative safety analysis. To overcome this limitation, an integrated methodology was investigated for quantitative safety analysis of the complex socio-technical system that combines a system-theoretic approach and numerical simulation. In the proposed methodology, STPA method is utilized to reveal potential unsafe control actions (UCAs) and corresponding causes based on the operational principle of the target system from systemic perspective. Moreover, the consequences of identified UCAs can be quantified and safety constraints also can be improved to prevent UCAs using numerical simulations. As a complex system, the blind shear ram preventers (BSRPs) in deepwater drilling activities, with tightly interacting diverse subsystems or components, is employed to illustrate the applicability of the methodology. The results verified that the proposed methodology could evaluate potential hazards and quantify the analysis results. These results will be helpful for the design and safe operations of the BSRP system. The developed methodology has the potential to be used for safety analyses in other process industries.
KW - Blind shear ram preventer
KW - Numerical simulation
KW - Safety analysis
KW - System-theoretic approach
KW - Unsafe control actions (UCAs)
UR - http://www.scopus.com/inward/record.url?scp=85191944466&partnerID=8YFLogxK
U2 - 10.1016/j.psep.2024.04.110
DO - 10.1016/j.psep.2024.04.110
M3 - Article
AN - SCOPUS:85191944466
SN - 0957-5820
VL - 186
SP - 1555
EP - 1566
JO - Process Safety and Environmental Protection
JF - Process Safety and Environmental Protection
ER -