Abstract: The transportation and storage of hazardous chemicals in ISO tankers pose significant safety risks, particularly in coastal port environments where accidental releases can affect both industrial facilities and nearby populations. This paper includes, consequence and dispersion analysis of the effects of accidents such as leaks of Styrene Monomer and n-Hexane in the area through the ALOHA (Areal Locations of Hazardous Atmospheres) computer modeling software. On a representative meteorological coastal environment, the Terminals located at the Kamarajar Port at India was simulated. The Acute Exposure Guideline Levels (AEGLs) was used to assess toxic threat areas, whereas lower explosive limit (LEL) levels and vapor cloud explosion overpressure levels were used to determine flammability and explosion dangers. It is observed that Styrene Monomer is unsafe mainly due to localized yet serious toxic risks because it is low in volatility and heavy, but n-Hexane exhibits widespread flammable and explosion risks because it is of high volatility and evaporates quickly. The comparative analysis indicates the effects of chemical properties and the environment on the dispersion behavior. This paper reveals the efficiency of ALOHA in supporting emergency preparations, risk prevention, and safety control within the scope of the chemical transportation and port operations.

Keywords: ALOHA; Chemical Dispersion Modeling; ISO Tanker; Styrene Monomer; n-Hexane; Risk Assessment; AEGL; Flammable Vapor Cloud; Port Safety.

Downloads: | DOI: 10.17148/IARJSET.2026.133104