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Tanks with Change of Temperature Between Cases

This analysis rule includes the list of tank elements that have a change in the temperature value between the current Case and the previous case. If the tank typically holds materials with a fluctuation in temperature, a threshold can be set for this tank to report only when outside of a normal range. A threshold of zero means that the rule has not been configured. The threshold must be greater then zero for the rule to run.

The following table lists a sample log output for this analysis.

Sample Log

TimeSeverityElementAttributeMessage
9/1/2005 10:05...REPORTING TANK WITH TEMPERATURE CHANGE BETWEEN CASES.
9/1/2005 10:05TankATemperatureCurrent Case: 100, Previous Case: 0

Analysis Method​

  1. Collect a list of all tank elements in the current Case that satisfy the following criteria:
  • Status Attribute value is IS (In Service).
  • For each tank, determine if the change of temperature is outside the allowable window as set by the thresholds that you entered.
  1. Write to the log section of the case. Report the current Case temperature and the previous Case temperature.

Configuration Using the Wizard​

The configuration of the Tanks with Temperature Change Between Cases is a selection of the General Gross Error Analysis Rule. You open the window for configuring the test (shown in the following figure) from the General Gross Error Analysis Rule Wizard.

  1. Open the Gross Error Configuration window as described in Configuring - General Gross Error Analysis Rule.

  2. On the Tanks tab, select Tanks with change of temperature between cases.

    A Tanks with change of temperature between cases - Attributes window opens.Figure 377: Tanks with change of temperature between cases - Attributes window

  3. Select Attributes according to the following table:

    Attributes

    SelectionsDescription
    TemperatureTemperature of material in the tank. The default is to Temperature.
    ThresholdThreshold level for the change in the temperature, same units of measure as the temperature attribute, default to 0.
    StatusTank in/out of service status. The default is to 'ObjectStatus'.

  4. Select a threshold value (set initially to zero unless changed) for the difference in the temperature between the two cases.

  5. Click OK to finish the configuration.

    The text "CONFIGURED" displays next to the 'Tanks with change of temperature between cases' selection.

  6. To run this test, see Running the General Gross Error Analysis.