Function A function is whatever the asset is required to do. For example, the function of a truck might be to transport up to one tonne of freight at a maximum highway speed not less than 90 km/h. Each asset can have several functions but just one primary function. See Also Functional failure Description of the functional failure. When failure mode optimization requires Isograph Availability Workbench, this attribute is mapped to functional failure description in AWB. See Also Failure Mode A failure mode is an event that causes an asset to fail to perform its function. For example, if a pump’s impeller becomes worn, the pump cannot convey liquid at the required rate. When failure mode optimization requires Isograph Availability Workbench, this attribute is mapped to the cause description in AWB. See Also Local Effects When extended failure effect statements are supported on an analysis, you can enter four separate effect statements for each failure mode: • Local effect on the piece of equipment • Intermediate effect on a higher level equipment or asset • End effect on the asset or system being analyzed • Worst-case effects See Also Intermediate Effects When extended failure effect statements are supported on an analysis, you can enter four separate effect statements for each failure mode: • Local effect on the piece of equipment • Intermediate effect on a higher level equipment or asset • End effect on the asset or system being analyzed • Worst-case effects See Also Failure effect A failure effect is the consequence of a failure mode. For example, when a pump’s impeller becomes worn (failure mode), the flow through the pump declines until it no longer delivers liquid at the required rate. When failure mode optimization requires Isograph Availability Workbench, this attribute is mapped to project effect description. See Also Analyze separately The failure mode is outside the scope of the current analysis. See Also H - Evident If the failure consequence is evident, select Yes. If it is hidden, select No. A hidden failure does not become apparent to the operating crew under normal circumstances if the failure mode occurs on its own. See Also
