Risk Assessment and Mitigation Measures in Chemical Process Industry Using FTA, FAHP & ALOHA

DOI

10.2991/978-94-6463-922-3_25How to use a DOI?

Keywords

Risk Assessment; Risk Management; TTPL; FTA; SAP; FAHP; ALOHA; SO₂; Desulphurization; Emergency Response; Probit Analysis

Abstract

An accidental release of hazardous chemicals may occur in process industries during production, storage, or transportation. Consequence assessment estimates the potential impacts of such releases, determining threat zones and their adverse effects on humans and the environment. It serves as a crucial component of risk assessment, which involves identifying, analyzing and prioritizing risks. Risk management emphases on developing and implementing measures to mitigate, control and monitor these risks effectively. This study focused on evaluating potential hazards at Travancore Titanium Products Limited (TTPL) to enhance safety, environmental protection and community well-being. The Fuzzy Analytic Hierarchy Process (FAHP) was employed to prioritize the identified risks based on their weightages, revealing that Sulphur dioxide (SO₂) release posed the highest risk, followed by Sulphuric acid leakage. Fault Tree Analysis indicated a higher probability of failure leading to SO₂ release than Sulphuric acid leakage. ALOHA software was used to simulate the dispersion of SO₂ under wind speeds of 6 m/s and 3 m/s, showing that gas concentration decreased with distance. A mitigation strategy using desulphurization with limestone slurry was proposed, reducing the mitigation time from 10 to 5 minutes and the affected area from 3218.69 to 1931.31 meters. This integrated model strengthens safety measures in the Sulphuric acid plant, minimizes environmental and human impact and supports effective future emergency planning and preparedness.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - S. Angitha
AU  - A. R. Soman
PY  - 2025
DA  - 2025/12/25
TI  - Risk Assessment and Mitigation Measures in Chemical Process Industry Using FTA, FAHP & ALOHA
BT  - Proceedings of the International Conference on Recent Advances in Materials, Processes and Technology for Sustainability (RAMPTS 2025)
PB  - Atlantis Press
SP  - 367
EP  - 388
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-922-3_25
DO  - 10.2991/978-94-6463-922-3_25
ID  - Angitha2025
ER  -