Concepts

Tasks

Settings

Viewing a Failure’s Remaining PF Interval

For open partial and potential failures, you can view the time remaining until the failure will become complete if it is not resolved beforehand. As long as an initial PF interval was entered on the failure record and the PF interval is not locked, APM continues to track the remaining interval until the failure is resolved. PF intervals can be based on time or an accumulated indicator value such as cycles or operating hours.

To View a Failure’s Remaining PF Interval

1.	Open the Failure or Anomaly window and select the Statistics view.

2.	Select the Statistics tab and then the Failure tab.

This tab displays information about the failure that was recorded when the failure was reported, including its severity and PF interval.

The following current information is displayed:

Setting Name

Description

Status

A failure can have one of the following statuses: • Open: APM continues to track failure statistics and the PF interval (if appropriate) for the failure. • Resolved: Statistics and the PF interval (if appropriate) are no longer calculated. • Canceled: Statistics and the PF interval (if appropriate) are no longer calculated.

Severity

The severity indicates the seriousness of the failure. For example: • Total: the asset’s performance has decreased to a point where the asset is no longer performing at its required level. The asset has completely failed. • Partial: the asset’s performance has decreased to a point where it is no longer performing one of its functions at the specified levels. The asset is still functioning. • Potential: a condition that has been noticed that would result in an actual failure if the problem is not resolved. The actual failure has not yet occurred. Potential failures are normally reported as the result of an indicator reading that has raised a warning alarm against the asset.

Remaining PF interval

The value and unit of measurement that indicates the interval between when the partial or potential failure occurred and the point when the failure will escalate to full severity. For example, the PF interval might be 1.2 weeks or 48 hours.

Elapsed time since failure occurred

The time that has passed from the time the failure occurred until the present, for example, 0.5 weeks or 24 hours.

Elapsed value since failure occurred

If the PF interval is based on a cumulative indicator value, the value that has passed from the time the failure occurred until the present, for example, 20 cycles or 48 operating hours.

Expected failure date

The date and time at which the PF interval will reach 0. If the interval is based on a cumulative indicator value, the expected failure date is based on the indicator’s average accumulation over the elapsed time.

Expected failure value

If the PF interval is based on a cumulative indicator value, the value at which the remaining PF interval will reach 0.