STEP 1: Set system boundaries, decomposition and function description

Adding an FMECA System

The FMECA method dictates that the first step is to define the decomposition of the FMECA System within predefined system boundaries. The decomposition will be linked to the Model and can be built up from subsystems, parts and components, creating a tree structure. The number of levels in this tree structure is unlimited. A part with corresponding components is always at the lowest level.

Note: For more information on how to create an FMECA system in Asset Strategy Optimization, see the topic FMECA System.

To maintain an overview when managing large numbers of systems, it is possible to create FMECA folders and sub folders.

Note: For more information on how to create an FMECA folder in Asset Strategy Optimization, see the topic FMECA Folder.

Adding a subsystem

A Model can be built up using subsystems. Using subsystems makes decomposition mimic real-life situations like units and sections. Subsystems help gain overview and increase insight in how a system operates. Both serial and parallel systems can be used to define the model. With a Serial System the whole system will fail when one of the parts or underlying subsystems fail. With a Parallel System the whole system will not immediately fail when one of the subsystems fail. In this way, redundancy can be modeled.

Note: For more information on how to create a subsystem in Asset Strategy Optimization, see the the topics Serial System and Parallel System.

Building up a hierarchy

Using the methods described above, a complete decomposition can be made of a system. Asset Strategy Optimization uses the following structure for decomposition:

Note: For more information about the objects that can be used in an FMECA tree, see the topic Objects in Asset Strategy Optimization.