Franklin Fueling Systems T5 Tank Sentinel Programming Guide - Manual (Page 40)

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Line Leak Test Results
Line Leak test results are either increase, passed, failed, or indeterminate.
Reasons Why Line Leak Tests Fail
The tank leaks.
Temperature instability – temperature variations of the product within the line is the most common source of
interference and failed leak tests / false alarms (a failure to detect real leaks can also result). Look at the hourly
temperature data on the leak test report and retest if the variation is more than a few tenths of a degree.
Large changes in product temperature from the start to the end of the test.
Water Level changes from the start to the end of the test.
Product is being dispensed during a test.
Steps to Take When a Line Leak Test Fails
Leak tests do occasionally fail. A single failed leak test should not be a cause for great concern – don’t panic.
Caution
Don’t excavate/repair a line because of a single failed leak test. Reference your site policy and
procedures plan.
If a site fails a leak test, review the leak test report to determine if there is an obvious source of interference with the test.
If such a source of interference is identified, retest the tank as soon as possible. (Retest the tank to check the first test
result if no source of interference can be identified. If necessary, run several tests.)
If repeated tests indicate a leak and no obvious source of interference is found, then immediately have the tank precision
/ pressure tested. If the precision test confirms the presence of a leak then the tank owner must take corrective action in
accordance with federal, state and local regulations.
Warning
The owner of the tank is legally obligated to comply with the reporting and procedure
requirements of federal, state and local regulations. These must be followed explicitly. Serious
legal, health and safety hazards could result from not taking immediate and proper action. For
instances when codes and regulations conflict with this manual — follow the regulations set by
governing agencies.
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