Failure Modes, Effect (and Criticality) Analysis
A Failure Mode, Effect and Criticality Analysis (FMECA) is a simple analytical method to;
- Identify potential failure modes of an equipment unit or a system
- Predict the effect and criticality of a failure on sub-system and system
The method is inductive; it only deals with one component/subsystem at a time and examines the consequences of failure. The criticality part of the FMECA consists of an evaluation of the frequency and the consequence of the end event or global effect.
A FMECA is normally performed as a multi discipline workshop where the participants contribute with their knowledge. To ensure a systematic analysis a special worksheet is used. A FMECA worksheet will vary depending on the nature of the task.
The benefits of performing a FME(C)A includes:
- Improved reliability
- Improved safety
- Improved quality
The analysis can be used to identify critical equipment or equipment parts, and the results can be used in a number of applications:
- input to maintenance planning (Reliability Centered Maintenance, RCM)
- input to production performance analysis,
- evaluation of design of equipment or processes
Example of FME(C)A worksheet. The worksheet is customized depending on the objective of the analysis.