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Concepts
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Tasks
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Settings

Creating a Degradation Comparative Analysis

Use the degradation analysis type to compare readings from as many as 12 degradation indicators.
Tip: Comparative analyses can also be created from a failure mode in a risk-based inspection analysis. In the Maintenance Action Plan window, select the Degradation Rates view and the Comparative Analyses tab and click New. This feature is not available for failure modes created for the damage mechanisms library.
This topic explains how to create a degradation comparative analysis. The following table shows the degradation and advanced analysis types, their features and options:
Feature
Advanced
Degradation
Indicators to compare
Yes
Yes
Chart indicators
Yes
No
Degradation indicators
No
Yes
Descriptive indicators
Yes
Yes
Readings over time
Options:
•
Show readings history
•
Time period
•
Axis title1
•
Indicator for bands
•
Show gauge sidebar
•
Show target line
Yes
Yes
Current values
Options:
•
Show current values
•
Current values chart type
Yes
Yes
Side-by-Side Comparison
Yes
Yes
Asset activities
Yes
Yes2
Asset Health Indexes
Yes
No
Secondary axes
Yes
Yes3
1
Not shown in degradation analyses.

2
In degradation analyses, activities are shown in the Analysis view, Asset Activities tab only.

3
For degradation analyses, customization of the readings chart appearance is needed to show secondary axes.

For related information, see:
•
Overview of Comparative Analysis
•
Creating an Advanced Comparative Analysis

To Create a Degradation Comparative Analysis

1.
In the Site or Asset window, select the Analytics view and the Comparative Analyses tab. This tab shows all existing analyses for the site or asset.
2.
Click New. The New Comparative Analysis dialog appears.
3.
Complete the following:
Setting Name
Description
Title
Enter a descriptive title for the analysis.
Performed by
The name of the employee who created the analysis. You can change the selected name by clicking the browse icon and selecting a different employee.
4.
In the Analysis type area, click Degradation. Tabs are added to the dialog:
5.
In the Time period to analyze area, complete the following:
Setting Name
Description
Period type
Select the type of time period to use:
•
Moving period: Select this option to set a time period that is relative to the current date. For example, if you are setting a time period for a comparative analysis, you could create an analysis for readings collected in the last month. If you select this option, each time you open the analysis or dashboard, you might see a different set of readings depending on the current date and the period that was selected to analyze.
•
Fixed period: Select this option for a set time period. When you select this option, you can define the start and end date and time.
Period to analyze
Select the period of time for which you want to display data. You can select from:
•
In the last
•
Last month
•
Last week
•
Last year
•
This month
•
This week
•
This year
•
Today
•
Yesterday
If you select “In the last”, you must also enter a duration (for example, in the last 6 months).
If you select “Fixed period” as the time period type, you also have the option “Custom”. When you select this option, you can enter the dates for which you would like to display data.
With a fixed period, you also have the “On or after” option. You can select the start date and time.
Note: The “Custom” option cannot be used with dashboards that display costs.
Calendar to use
Select the calendar type to use in determining the dates for the costs or readings that will be displayed:
•
Regular: the readings displayed are filtered based on the standard calendar. For example, if the dashboard is showing readings for the current month and the date is December 10, the dashboard shows readings for the period of December 1-10.
•
Financial: the readings displayed are filtered based on your organization’s financial periods. For example, assume that your financial periods start on the first Tuesday of the month. For December 2002, the financial month would then start on December 3, 2002. In this case, on December 10, 2002 a dashboard that is showing “current month” based on the financial calendar would show readings for the period of December 3-10.
Start date
The starting date and time for the analysis period. If you selected a moving date range, you cannot edit the date shown in the box. If you selected a fixed date range, you can directly enter a start date and time in the box.
End date
The ending date and time for the analysis period. If you selected a moving date range, you cannot edit the date shown in the box. If you selected a fixed date range, you can directly enter an end date and time in the box.
6.
On the Indicators to Compare tab, click Browse. The Browse Indicators dialog appears.
7.
Select the indicators for the analysis and click OK. They are listed on the Indicators to Compare tab. They are also added to the Degradation Indicators tab when you add them in the New Comparative Analysis dialog.
8.
Select the Options tab, for example:
9.
Select from the following options:
Setting Name
Description
Show readings history
Select this option to show the Analysis view, Analysis tab. This tab displays readings over the specified time period.
Show side-by-side comparison
Select this option to show readings side-by-side in the Analysis view, Dashboard tab.
Note: This option is available for advanced comparative and degradation analyses.
Show current values
Select this option to show current indicator values in the Analysis view, Indicators tab, Current tab.
Current values chart
To replace the default chart style shown in the Analysis view, Indicators tab, Current tab when the Chart icon is selected, choose a chart type from the list.
Primary indicator
The primary indicator is used for the alarm bands, gauge, and target line on the charts.
Show gauge sidebar
By default, a gauge sidebar is displayed in the Analysis view, Indicators tab, Readings tab. You can turn this feature off by clearing the selection.
Show target line
By default, the target line is displayed in the Analysis view, Analysis tab. You can turn this feature off by clearing the selection.
10.
Select the Degradation Indicators tab. This tab lists the indicators whose readings appear in the Analysis view and tab. When you add indicators using the New Comparative Analysis dialog, they are automatically added to this tab in the same order. For example:
You can remove indicators or change their order. To include additional indicators, first add them on the Indicators to Compare tab.
The minimum value line indicator supplies a black horizontal line in the graph representing the indicator’s degradation rate, based on the FFP minimum value.
11.
Select the Activities tab.
12.
Select the activities to include, as well as the asset:
Setting Name
Description
PM tasks
Select this option to show completed PM tasks in the comparative analysis.
Corrective tasks
Select this option to show completed corrective tasks in the comparative analysis.
Downtime incidents
Select this option to include downtime incidents in the comparative analysis. The start and end points are displayed in the chart.
Start of new asset lives
Select this option to include the start of new asset lives in the comparative analysis.
Component installations
Select this option to include component installations in the comparative analysis. The asset for activities must be a component or location.
Failures
Select this option to include failures in the comparative analysis. APM selects all severities by default. You can clear the options for severities that you do not want to display.
Asset for activities
Browse to select the asset for the comparative analysis activities.
Note: In degradation analysis, activities are shown in the Analysis view, Asset Activities tab only. 
13.
To create the analysis, click OK. The Comparative Analysis window appears. Settings can be adjusted using the tabs on the Properties view, General tab. For example:
14.
Select the Analysis view, Degradation Analysis tab to see charts of the comparative analysis. This tab includes the Readings, Degradation Rates, Remaining Allowance, and Degradation Dashboards tabs. For example:
15.
Select the Indicators tab to view current values (Current values on the Properties view, Options tab must be selected), and readings for the analysis.
16.
Select the Asset Activities tab to view tables of the asset’s activities. You can choose from these table configurations:
•
Completed tasks for the asset during the time period
•
Failures for the asset during the period
•
Downtime for the asset during the period
•
Downtime that affected the asset during the period
•
Asset lives started or ended for the asset during the period
17.
Select the Notes tab to record information about the analysis.