Franklin Fueling Systems T5 Series Fuel Management System Programming Guide - Manual (Page 40)

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Leak Testing
All T5 series console models meet (or exceed) the
requirements of the U.S. Environment Protection Agency
(EPA / 530 / UST-90 / 006 test protocol) for Automatic Tank
Gauging Systems (ATGS) for Monthly Monitoring for 0.2
gal/hr leaks of Underground Storage Tanks. The system(s)
also meet (or exceed) the requirements for Annual Tank
Tightness Testing for 0.1 gal / hr leaks of the National Work
Group on Leak Detection Evaluations (NWGLDE). For the
most recent third-party documentation, visit the NWGLDE
website at www.nwglde.org.
Overview
Tank and / or line leak tests are performed on a regular
schedule according to test type. In addition, leak tests
can be started manually from the console display or web
interface.
To obtain valid results, leak tests should be started when
conditions in the tank or line are stable and will remain
stable throughout the test (such as during non-business
hours). A test will not and can not pass if tank and/or line
conditions are disturbed. Deliveries and dispenses will
cause thermal instability or product turbulence, which
will interfere with tank leak testing. These disturbances
may cause the test to report a failure, an increased
result, or cause the test to run for 8 hours and report an
indeterminate test result. Wait at least 6 hours after a
product delivery, and 2 hours after product dispensing
stops, before forcing Tank Leak Tests.
Generally, tank tests take about 4 to 5 hours to finish (the
exact time required depends on the type of test being
performed, size of the tank, volume of product in the tank,
and the product temperature).
The best time to test the tank integrity (leak test) is when it
is full or nearly full. Regulatory requirements in some areas
insist on having a certain percentage of product in the tank
before a test can be considered valid and in compliance.
Try to run tests on tanks that are 50% full or greater.
SCALD leak tests can run only when tank levels are at or
above the set “Qualify” value.
Tank Leak Tests – Type and Frequency
Tank Testing software (option T) includes Static and
SCALD tank testing. Both tests comply with federal, state
and local codes and regulatory agencies, which specify
how often to run these tests. Consult and comply with
these rules and regulations.
Caution
It is the tank owner’s obligation to
comply with the procedures and the
reporting requirements of federal, state
and local regulations. You are legally
bound to follow these regulations
explicitly. When policies conflict with
this manual, follow the regulations.
Static Tank Testing Requirements
• Print a leak test Estimate Report.
• There must be enough quiet time to finish the test
with no product dispensing.
Note: A 10,000 gallon tank requires about 5 or 6 hours to
finish.
• Wait at least 6 hours after a product delivery – or
– 2 hours after a product dispense. Active tanks
without Stage II vapor recovery may require longer
stabilization periods.
FFS does not recommend running both Line & Tank
Leak Tests at the same time.
When to Force Static Tank Leak Tests
• To comply with federal, state, and local regulatory
agency requirements.
• To comply with the policy and procedures of your site.
• Whenever a leak detection sensor alarms — this
is especially important when a discriminating
BriteSensor detects a liquid / vapor hydrocarbon
(product). A failed leak test and BriteSensor product
alarm indicates a tank or product-line leak.
Note: Standard / product alarms may be caused by
motor oil runoff during heavy rains, or because a
BriteSensor has detected a product leak from a
tank. Take a sample from the area for chemical
analysis.