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AVEVA Pipeline Operations for Liquids

TABLE OF CONTENTS

Access the Tank Summary window

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  • Last UpdatedApr 24, 2025
  • 4 minute read

The Tank Summary window provides a summary of important tanking information and access to the tank control windows and dialogs.

The values on the Tank Summary window, along with all of the other windows that supply information about tanks, are subject to any custom rounding that has been applied to the precision values. Custom rounding can be applied to the following values:

  • Volume

  • Temperature

  • Density

  • Pressure

For more information about precision custom rounding, refer to the AVEVA Pipeline Operations for Liquids Administrator Guide documentation.

To access the Tank Summary window

  1. To access the Tank Summary window, you must first open easy extended Operator Station (ezXOS).

    After opening ezXOS, the Navigation Menu appears.

  2. Select the LMS dropdown menu, and then select Tank

    Embedded Image (65% Scaling) (LIVE)

    The Tank Summary window appears.

The following table details the items on the Tank Summary window.

Fields

Description

Name

Name of the tank record.

Tank Direction

This column indicates the state that the tank is in.

Possible states include:

  • Filling — A positive flow rate value indicates that the tank is filling.

  • Emptying — A negative flow rate value indicates that the tank is emptying.

  • Unknown — The state is unclear.

  • Stationary — This indicates a negligible flow.

  • Idle — This tank has been set to idle.

External Direction

This column indicates the state that the tank should be in.

Possible states include:

  • Inactive — The tank is flowing neither in nor out.

  • Receiving — The tank is receiving product from the outside.

  • Delivering — The tank is delivering product to the outside.

  • Floating — The tank may be delivering and receiving.

  • Unknown — There are no external devices configured for external flow, or there was an error getting the readings.

No.

Tank number.

Status

This field indicates whether the tank is in a normal or an alarm state. For a description of tanking alarms, see Enable and configure tank alarms.

Product

Product type currently contained in the tank.

% Full

The percent amount by which the tank is full.

GOV

The Gross Observed Volume (GOV) of product in the tank. The GOV is calculated by:

  1. Determining the associated volume for a given level using a strapping table lookup and interpolating between configured levels and volumes.

  2. Applying any needed corrections to the strapping table reading such as the snow load correction or the roof load correction.

    Gross Standard Volume (GSV)

    The GOV corrected to standard temperature.

    Vol Type

    This indicates whether GOV or GSV is used when applying Rate of Change (ROC) alarms and using the scratch pad.

    Vol to Pump

    The volume of liquid in a tank, excluding the tank bottom volume. The configured tank bottom volume is subtracted from the current GOV to calculate the volume of liquid that can be safely pumped from the tank.

    Vol to Fill

    The volume of space remaining in the tank. The current GOV in the tank is subtracted from the configured maximum safe tank volume to calculate the volume to fill. If the volume in the tank is larger than the maximum safe volume, the volume to fill is negative.

    Remain

    The distance between the current fill level and the maximum safe fill level.

    This distance decreases as the tank fills, and increases as the tank empties.

    Time to Fill/Empty

    The time that it should take to fill or empty the tank at the current flow rate.

    Note: The time to fill or empty a tank is displayed as <hh:mm:ss> when the time to fill or empty is less than 365 days. If the time to fill or empty is more than 365 days, the field will display as a blank.

    Temp

    The temperature in the tank.

    GOV Flow Rate

    The instantaneous GOV flow rate based on tank level changes.

    GSV Flow Rate

    The instantaneous Gross Standard Volume (GSV) flow rate, calculated by correcting the instantaneous GOV Flow Rate to standard temperature.

    Avg GOV Flow Rate

    The average Gross Observed Volume (GOV) flow rate based on tank level changes.

    Note: The Elapsed Time is configured by the Administrator.

    Avg GSV Flow Rate

    The average Gross Standard Volume (GSV) flow rate, calculated by correcting the Avg GOV Flow Rate to standard temperature.

    Smoothed GOV Flow Rate

    The average GOV flow rate based on a Basic Exponential Smoothing filter.

    Smoothed GSV Flow Rate

    The average GSV flow rate based on a Basic Exponential Smoothing filter, calculated by correcting the Smoothed GOV Flow Rate to standard temperature.

    Man Temp

    This field indicates whether or not the temperature is a manually-entered value. For more information, see Open the Tank Manual Overrides dialog.

    Man Den

    This field indicates whether or not the density is a manually-entered value. For more information, see Open the Tank Manual Overrides dialog.

    Level Format

    This column indicates the level fraction format used to display all the Level values in the tank ezXOS displays, alarm limits, and alarm messages.

    Group

    The group to which this tank belongs.

    RTU

    The name of the Remote Terminal Unit (RTU) that controls the point.

    Remote

    The Remote also identifies the RTU that controls the point.

    Station

    Station assignment used for filtering.

    Description

    Description of the tank.

    Inh Time Left

    This column provides information about for how long the alarms will be inhibited for. After time runs out, if the point is in an alarm state, the point will reactivate the alarm.

    Safety

    This checkbox will filter for safety-related points.