What should be done if additional detail is needed in an FTA?

When additional detail is needed in a Fault Tree Analysis (FTA), diving deeper into the analysis with additional FTA is the most appropriate course of action. This approach allows for a more granular examination of the contributing factors and relationships that lead to the identified failures or top events. Adding layers to the FTA provides a clearer picture of the system's failure pathways, enabling better understanding and improved reliability assessments.

By expanding the analysis, you can better identify and relate the critical base events and failure modes, which enhances insight into potential interventions or improvements that can be made. This level of analysis is essential in fields where understanding complex interactions within systems can lead to more effective reliability management and risk mitigation strategies.