Issue Date February 24, 2023
Electronic Line Leak Detector for Rigid, Semi-Rigid, Flexible and/or Combination
AUTOMATIC ELECTRONIC LINE LEAK
Leak rate of 3.0 gph at 10 psi* with PD = 100%
and PFA = 0%.
Leak rate of 0.2 gph at operating pressure with PD = 100%
and PFA = 0%.
Leak rate of 0.1 gph at 1.5 times operating pressure*
with PD = 100% and PFA = 0%.
*Since leak rate varies as a function of
pressure, this leak rate and pressure were certified using an equivalent
leak rate and pressure, in accordance with an acceptable protocol.
||1.5 gph for leak
rate of 3.0 gph.
0.1 gph for leak rate of 0.2 gph.
0.05 gph for leak
rate of 0.1 gph.
A pipeline system should not be declared tight if the
test result indicates a loss that equals or exceeds this threshold.
aviation fuel, #4 and #6 fuel oil, solvents, used oil, ethanol blends up
through E100, biodiesel blends B6-B20 meeting ASTM D7467, biodiesel B100
meeting ASTM D6751.
pressurized rigid, flexible, and combinations of rigid and flexible
Tests are conducted at operating pressure.
not function with a mechanical line leak detector installed in the pipeline.
||For 3.0 gph
(hourly), 0.2 gph (monthly) and 0.1 gph (annual) leak rate test:
of 124 gallons flexible or semi-rigid pipe
Maximum of 559 gallons for
combination (flex, semi-rigid, rigid) pipelines with a minimum bulk modulus
of 21,987 psi.
delivery and testing.
None between dispensing and testing.
||Response time is
13 to 14 minutes (average test time of 14 minutes) for a leak rate of 3.0
Response time is 5 to 6 hours (average test time of 5.5 hours) for
a leak rate of 0.2 gph.
Response time is 5 to 15 hours (average test
time of 14.25 hours) for leak rate of 0.1 gph.
Test data are acquired
and recorded by a microprocessor.
Calculations are automatically
performed by the microprocessor.
console used in this evaluation with Dover ELLD.
Automatic testing of pipeline.
Pump shutdown (optional), message display and alarm activation if leak is
||System must be
checked annually and, if necessary, calibrated in accordance with
evaluated on a pipeline consisting of rigid and flexible piping, and the
resulting combined bulk modulus was determined by physical measurement at
During initial setup, it is necessary to program
the console by activating the consoles “learn” mode in order for the console
to gather data on the pipeline with a Dover supplied leak orifice installed.
Once the “learn” mode is finished, the system is ready to monitor the
pipeline and will not need to be re-programmed unless the line
Dover Fueling Solutions
Ken Wilcox Associates
3814 Jarret Way
Tel: (816) 443-2494
Austin, TX 78278
Date of Evaluation:
Tel: (708) 485-4200