ITEM TOOLKIT

146 ITEM ToolKit Getting Started Guide
Adding Failure Modes, Causes, and Effects
A Failure Mode is the way in which a component is expected to fail. Causes are the factors that are proven or deduced to
directly or indirectly produce the failure of an item, component, equipment, or system. A Failure Effect is the effect a
component Failure Mode has on its “parent” block.
There are three types of Failure Modes
• At the system level, which are End Effects.
• At the intermediate or subsystem level, which are Effects.
• At the component or lowest level, which are Failure Modes.
A lower level failure mode is the cause of the upper level failure mode, which is the effect of the lower level failure mode.
Since FMECA analyses from the lowest level up, the first step is to define the failure modes of Power Supply 1.
To add a failure mode:
1. In the System Window, click the Power Supply component (A). The component information appears in the Dialog
tab.
B
C
D
E
A
G
F
H
2. In the Dialog tab, click the Mode Info tab (B).