Construction Health and Safety Technician (CHST) Practice Test 2026 – All-in-One Study Guide for Exam Success!

A fault tree analysis (FTA) primarily focuses on understanding the causes of specific failures or events in a system and identifying factors that may contribute to them. The analysis starts with a potential undesired event at the top, referred to as the "top event," and works downwards through various logical pathways to identify contributing factors, which can include root causes and failure mechanisms.

Training programs for workers, while essential for overall safety and risk management, are not a direct component of fault tree analysis. FTA is more concerned with systematic identification of all possible causes and their interrelationships rather than the educational or procedural initiatives taken to mitigate those causes.

In contrast, root causes of an event, efforts to prevent occurrences, and statistical data of past incidents are all important elements in fault tree analysis, as they help in mapping out the pathways that could lead to the failure and thereby inform what preventive measures could be put in place. Understanding past incidents can provide insight into patterns of failure, while efforts to prevent occurrences directly relate to mitigating risks identified through the analysis.