FuelsManager Defense
240 Administrator Manual
Note! Leak Detection is only
available with FuelsManager
Professional Edition. The Standard
Edition will not allow access to this
feature. For additional information
about upgrading to the
Professional Edition and above,
please contact your Varec
representative.
Leak Detection is designed to monitor tank farms and pipelines for leak conditions
and alert you to a potential environmental hazard.
Using the Remote Terminal Unit, the Leak Detection system communicates with
various leak detection systems, such as interstitial monitoring, vapor monitoring
and pipeline leak detection systems, while bringing all information back to one
central computer for monitoring and reporting ease and convenience.
• Monitoring Level, Temperature, Water Level and Density from field
instruments or operator entry
• Performing analysis of sensor data, looking for conditions that might indicate
a leak
• Comparing instruments readings and calculations against alarm limits
• Annunciating, processing and logging alarms
• Providing Reports
Configuration of the FuelsManager Leak Detection feature is performed from the
Configuration user interface and is documented in this section. The procedure for
running a leak test and creating a leak report is accessed via the Operator user
interface and is documented in the User Guide for the Operate program.
Leak Detection interfaces directly to FuelsManager’s Archive database, reading
data from ArchiveManager’s database file, applying filtering algorithms,
calculating various statistics, applying qualifying logic and writing the results of the
calculations to FuelsManager database points. Alarm Processes running within
DataManager can monitor the resultant calculations. Any data source can serve
as the source of data for Leak Detection’s calculations. This includes data
manually entered, data calculated by DataManager or an Application DLL, or data
received via CommManager or an OPC server.
FuelsManager Leak Detection feature is able to detect a leak at rates as low as
0.2 gallons per hour. The ability to detect leaks at these rates depends upon the
physical characteristics of the tank (size, shape, above/below ground, materials
used in construction, etc.), the types of instruments available to measure the
properties of the product in the tank, the resolution & stability of the instruments,
and how the tank is used.
Leak Detection has two basic methods for detecting tank leaks:
• Volumetric
•Mass
Volumetric Analysis
Volumetric leak detection involves measuring the level and temperature,
calculating the Net Standard Volume, analyzing the tank data during periods of
inactivity, and searching for losses.
Detection of leaks in bulk storage tanks using volumetric changes depends upon a
number of factors, including the dimensions of the tank, and the Net Standard
Volume derived from the level & temperature.
The resolution, stability and accuracy of the level & temperature instruments play
a major role on how effective this method is. An accurate gauge with high
resolution yields the best results for static measurement. The accuracy of the tank
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