In a FMEA you often encounter multiple actions that are planned and executed to address a single cause of failure. Such actions may be planned in a single session, or may span over a period of time. The FMEA format recommends that as a result of each action taken a closing Severity Occurrence and Detection ranking is logged. There is also a column to log the closing RPN. I take these closing numbers as the status of the risk after the action has been implemented. I do not know how the Severity ranking could change as a result of an action, so I prefer to leave it as identified with the most serious effect of the Failure Mode. I believe the closing Occurrence and Detection rankings tell me something about the residual risk that remains after taking the action. With multiple actions implemented there will be several pairs of closing Occurrence and Detection rankings each indicating the residual risk that remains after the action is taken. To understand the residual risk for the Cause to lead to the Failure Mode after all actions, I look at the lowest closing Detection and Occurrence rankings across all the actions completed to address the cause. There isn’t a lot of technical literature that I have come across that talks of the residual risk assumption as a result of multiple actions put together. Comments and discussions from practitioners would help. Thank you.