Abstract: This paper presents an in-depth analysis of fire accident causes at liquid chemical terminals. The ALOHA model is used for quantitative assessment of potential fire hazards during styrene loading and unloading operations at a specific chemical terminal. The results show that under adverse meteorological conditions, if styrene leakage at the terminal triggers a fire and explosion, the thermal radiation impact radius reaches 53 m at 10 kW/(m2), extends to 68 m at 5 kW/(m2), and attains 97 m at 2 kW/(m2). On this basis, this study investigates the design of fire protection systems and technical safety measures for liquid chemical terminals, with the objective of improving their overall safety performance.

Key words: liquid chemical terminal, fire, risk assessment, firefighting