As process safety incidents continue to occur in industries causing death and damage, it is important to identify trends that lead to loss of containment. In this work, we review 81 process safety incidents across a variety of industries to find the root causes. Incidents were categorized according to 18 different contributing factors, based off the Center for Chemical Process Safety (CCPS) elements of risk-based process safety. The most common factors were asset integrity and human factors. For incidents involving asset integrity, we found the type of equipment that failed most frequently to be mechanical equipment, primarily piping. The incidents that involved human factors were analyzed through the lens of the Phoenix human reliability analysis (HRA) model, to test whether the model helps explain human failure events in process safety incidents across a variety of industries. The model helped in identifying mechanisms of failure and performance influencing factors but had blind spots regarding cooperation between teams.