The final report should present all information in tabular format. Each parameter should be addressed in an individual table, which may be accompanied by a report that restates the study's scope and any suggestions or recommendations. Analysis is restricted to identification of system elements and events that led to a specific failure or accident. Probabilities can be calculated using minimum cut sets. The top event is defined.
Investigators develop a thorough understanding of the system to be analyzed.
This can be accomplished by studying design drawings, equipment specifications, literature and operation procedures, and related information. The fault tree is constructed. The fault tree begins with the top event and addresses any possible equipment failure, human error or environmental factors that could result in the top event. Undeveloped events are not further addressed. Basic faults are the primary cause of the top event.