Application of Multi-state Systems in Fault Tree Analysis of a Conceptual Thermochemical Hydrogen Plant

Abstract

In this paper, we propose a new method to improve the performance of top-level events in fault trees (FT) by using multi-state systems. Fault tree analysis (FTA) is used to evaluate the reliability of a conceptual themochemical hydrogen generation plant. Since FTA is a backward-stepping process, basic events determine the performance of top events in fault-trees. Our method aims to improve the performance of basic events (i.e., sensors, or valves) to achieve higher reliabilities by applying multi-state systems under a specific demand.