Adding Tank Class Alarms

The Tank equipment class has four properties (Density, Depth, Inner Pressure, Temperature). You will only create alarms for Inner Pressure (INR_PRES) and Temperature (TEMP). Both alarms use a Hi Limit alarm type, which triggers an alarm if the input value exceeds the specified high limit setpoint.

For example, if the Inner Pressure exceeds 0.10 MPa or the Temperature exceeds a specified 20.5°C, these values will trigger an alarm and notify the responsible parties. These values do not represent true operation values but are being used to show alarm values in a GraphWorX™ display.

To add alarms for your tank equipment:

  1. Open Workbench and in the Project Explorer, expand Assets >Equipment classes>Tank Farm Classes> TNK and double-click INR_PRES. The equipment class property pane appears.

  2. Define the Inner Pressure alarm. Do the following:
    1. On the Alarm tab, select Enable Alarms. The alarm settings appear below the checkbox.

    2.  Click next to the Type field, select Hi Limits, and click OK.

    3. In the Base Text field, enter "Tank Pressure" (all text requires a double quote).
    4. In the Return to Normal section in Message Text, enter "Normal".
    5. In the Hi Condition section, enter the following:
      • Value: 0.11
      • Message text: "Tank Pressure high"
      • Severity: 1
    6. In the HIHI Condition section, enter the following, and then click Apply & Close.
      • Value: 0.13
      • Message text: "Tank Pressure too high"
      • Severity: 1
  3. In the Project Explorer, expand Assets >Equipment classes>Tank Farm Classes> TNK, and double-click TEMP. The equipment class property pane appears.
  4. Define the Temperature alarm. Do the following:
    1. On the Alarm tab, select Enable Alarms. The alarm settings appear below the checkbox.
    2. Click next to the Type field, select Hi Limits, and click OK.
    3. In the Base Text field, enter "Temperature" (all text requires a double quote). In the Return to Normal section in Message Text, enter "Normal".
    4. For the Hi Condition section, enter the following:
      • Value: 20.5
      • Message text: "Tank Temperature high"
      • Severity: 1
    5. For the HIHI Condition section, enter the following, and then click Apply & Close.
      • Value: 30.5
      • Message text: "Tank Temperature too high"
      • Severity: 2

What's Next?