ABSTRACT
The employment of new technologies that involve process conditions not presently used on a commercial level or still under research, such as hydrogen production with thermochemical cycles such as the Sulphur-Iodine (SI) cycle emphasizes the importance of reliable emergency systems. Thus, the use of Probabilistic Safety Analysis (PSA) can be extended to the chemical industry to evaluate which factors affect the unavailability or unreliability of these systems and thus have a way to quantify the impact of adding or modifying their design. Additionally, the use of Fault Tree and Event Tree Analysis provides information about the components that contribute most to the unreliability of the systems. In this paper we present the evaluation of some proposals to decrease the frequency of occurrence of accident sequences initiated by uncontrolled leaks in a plant that is still in the design phase.
