The System FMEA (also termed a system analysis) is a subsection of the FMEA (Failure Mode and Effects Analysis). It is intended to investigate an entire system and check whether all of the individual components within it work together correctly. Actions can be derived from the analysis. These actions, when implemented, are intended to increase system security, system reliability and system availability. The system is investigated intensively and potential failures are determined during a System FMEA. The failure effects describe how the system behaves when a failure state occurs.
To achieve this, output information is needed. This can usually be found in the specification sheet or obtained from the quality planning department via quality function deployment (QFD).
The objective of the System FMEA is to prevent failures early on, in the preliminary phases while the system is still being designed. Safety and reliability are the main elements that are checked, as well as determining whether the legal provisions are being complied with. This type of FMEA can therefore aid in selecting a system or be useful in comparing different systems.