Certified Maintenance & Reliability Professional (CMRP) Practice Exam

What does a fault tree analysis (FTA) typically generate?

1. A series of corrective actions

2. A diagram showing the hierarchy of failure causes

3. A list of potential failures

4. A risk assessment summary

The correct answer is: A diagram showing the hierarchy of failure causes

A fault tree analysis (FTA) is a systematic, graphical approach used to identify the various combinations of faults that might lead to a particular undesired event, commonly referred to as the "top event." The primary output of an FTA is a detailed diagram that represents the relationship between failures and their possible causes. This diagram illustrates the hierarchical structure of these failures, showing both the direct and indirect causes that can contribute to the top event occurring. The FTA is particularly useful in evaluating the paths of failure and understanding how different elements in a system interact with each other. By depicting complex relationships in a visual format, stakeholders can grasp the root causes of potential failures, which aids in preventing them. The clarity of the diagram allows for better communication and analysis within teams tasked with improving reliability and maintenance practices. While other options like corrective actions or potential failures may be outcomes of the analysis process, they are not the direct product of an FTA. The focus of FTA is on generating a comprehensive diagram that encapsulates the interplay of failure causes. This visual representation serves as a critical tool in reliability engineering, fostering a deeper understanding of failure dynamics that can inform decision-making and risk management strategies.