Franklin Fueling Systems T5 Series Fuel Management System Operators Guide - Manual (Page 16)

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Tank Testing
There are two types of Tank Testing available in the Fuel Management Systems: Static and SCALD.
Static tests are run during quiet times when the tank is thermally stable and the site is closed so that no dispensing or
deliveries will occur. There are two types of Static tests: Monthly (0.2 gph) and Annual (0.1 gph). Static tests can be
scheduled to run on a Daily, Weekly or Monthly basis in the Setup menu (Administrator use only). They can also be
started on demand from the FMS > Control menu. Make sure that all testing conditions are met before starting a Static
Tank Test.
SCALD (Statistical Continuous Automatic Leak Detection) tests run 24 hours a day and look for periods of quiet time when
the tank is thermally stable and no dispensing or deliveries are occurring. These quiet periods are collected and analyzed
and the tightness of the tank is determined. SCALD tests will update whenever possible and can be setup to print
automatically when they do. The more common method is to schedule the latest SCALD test to print out once a week,
saving a significant amount of paper because SCALD tests can be generated multiple times a day on a quiet tank.
Static and SCALD tests run independently of each other and can be run at the same time. A SCALD test will likely
complete during the time that the Static test is running.
All INCON Fuel Management Systems meet the requirements of the U.S. Environmental Protection Agency (EPA/530/
UST-90/006 test protocol) for Automatic Tank Gauging Systems (ATGS). The system(s) also meet the requirements for
Annual Tank Tightness Testing for 0.1 gal/hr leaks of the National Work Group on Leak Detection Evaluations (NWGLDE).
Third Party Testing Laboratory test results (for standard static tank leak tests) are also available at http://nwglde.org/ .
Why Test the Integrity of a Tank
In compliance with federal, state and local regulatory policies, all tanks must be monitored for leaks due to environmental
and public safety/health concerns. Tank tightness testing determines if there is a leak.
Static Testing
Terms
Threshold – Test results must be within these programmable limits to pass a leak test. There are Monthly, Annual and
Sentinel Mode Thresholds.
Sentinel Mode – Sentinel mode is designed to monitor the product levels in your tank(s) when there isn’t supposed to be
any dispensing.
Confidence – Level of testing sensitivity indicating the probability that the test will detect a leak.
Higher confidence percentages will produce more sensitive test results. Check local regulations to
verify acceptable confidence levels.
Flow
Time No Leak
(+) slope
(–) slope
Slope (Tank Testing Reports) – A ratio of the calculated rate of change to the time the rate is
measured. Slope is affected by leaks and by many other sources of interference. A negative slope
or decrease indicates loss of product volume. A positive slope or increase indicates a rise in product
volume.