Build an FMECA hierarchy

Here you will find a step by step explanation of how to set up a basic FMECA hierarchy. The example will use a common place object, such as a bicycle, which contains all the aspects that one can find in FMECA.

To build a FMECA hierarchy, follow these steps:

1. Open the FMECA Systems screen from the main screen in Asset Strategy Optimization

2. Folder. FMECA folder an FMECA folder with a clear name in the left part of the screen, e.g. Systems

3. System. After adding a new FMECA folder, the folder can be FMECA System with a clear name, e.g. Bicycle. When creating an FMECA system in the left pane, a Model will be created in the middle pane, both with the same icon. The model can be used as the starting point to build up a hierarchy of objects available to the user.

4. Serial System. Serial System. Use names that yield a logical decomposition of the system, e.g. a main serial system called Bicycles, with subsystems called City Bike, Electric Bicycle, Mountain Bike.

5. Parallel System. You can also model redundancy by Parallel System. In the example above, no parallel system is present (as one may expect with bicycles).

6. Part. You may now Part, such as Brakes and Wheel in the example above.

7. Component. now Component which together make up the Part. To be able to define failure causes, at least one component must have been created.

8. Failure cause. Failure Cause per component, e.g. a broken brake cable for component Brake cable.

9. Maintenance. For each failure situation, Maintenance needed to resolve the failure, e.g. Replace brake cable.

   Note: When the field Tag is filled, that word will be included in the name shown in the FMECA tree, separated with a dash. E.g. a Serial system called Bicycle may be give a tag called B1. The name displayed on the screen will then be B1 - Bicycle.

Expand or collapse tree to a desired level

It is possible to quickly expand or collapse the FMECA tree to a desired level. This is possible for the FM Library, the FMECA Systems screen and for simulation models. Use the action described in the screen shot.

Quickly expand or collapse the tree to a desired level

By clicking the right mouse button on a System, Part, Component or Failure cause, the quick menu 'Expand To' is revealed. The function 'Collapse All' causes the whole tree that is currently expanded underneath the clicked object to collapse.

Create a default structure

With this function the user can create a new simple structure with a subsystem, part, component, failure cause and an FBM maintenance action. Combined with the FlexGrid, you may quickly set up a new asset structure and fill in the necessary data.

Quickly create a basic structure and fill it using the FlexGrid

Recommendations for good performance with FMECA and FM-Library nodes

• For a better performance, the FMECA and FM-Library checkboxes under the 'Show Spare Part Analysis' option in the GUI settings are in unchecked state. However, if you want to enable them, then following are the recommendations for creating FMECA or FM-Library nodes.

  When the Spare parts analysis is enabled	FMECA and FM-Library
  Parts under per subsystem	30 - 35
  Components per part	20 - 25
  Failure cause	20 - 25
  Note: These numbers are recommended for a flat tree structure.

• Viewing Management Report for FMECA

  We recommend that you view the Management Reports at the subsystem node level, as this will open the system quickly.