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Certification
|
Leak
rate of 3.0 gph at 10 psi with PD = 100% and PFA = 0%.
The USEPA has not set a minimum detectable leak
rate for large diameter pipeline systems (airport hydrant
systems) at the time of this evaluation. |
|
Leak
Threshold
|
2.2
gph.
A pipeline system should not be declared tight if the
test result indicates a loss or gain that equals or exceeds
this threshold.
|
|
Applicability
|
Gasoline,
diesel, aviation fuels, fuel oil #4, waste oil.
Other liquids may be tested after consultation with the
manufacturer.
|
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Specification
|
System
tests pressurized bulk material transfer pipelines.
Suitable for all pressurized steel, plastic, fiberglass,
or concrete pipelines.
System is used as an equivalent 3 gph line leak detector.
Leak detection flow rates are proportional to pressure
in pipeline.
Testing is conducted while the product is not flowing
in the pipeline.
Pipeline must be full and under pressure.
Gravity feed pipelines under constant static head pressure
may be tested with system.
|
|
Pipeline
Capacity
|
Maximum
of 116,230 gallons.
System tested on 58,115 gallon pipeline.
Use of pipeline test protocol allows system to be used
on pipelines twice the volume of test pipeline.
Contact manufacturer prior to using on pipelines exceeding
58,115 gallons through 116,230 gallons.
|
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Waiting
Time
|
None
between delivery and testing.
None between dispensing and testing.
|
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Test
Period
|
Response
time is 2 to 5 minutes.
Test data are acquired and recorded by system's computer.
Calculations are automatically performed by system's computer.
|
|
System
Features
|
Permanent
installation on pipeline.
Automatic testing of pipeline at least once per hour under
static conditions.
Continuous operation during flowing conditions (however,
thresholds are higher due to hydraulic noise in pipeline).
Declaration of leak if current changes in pressure exceed
tuning parameters, or if pressure fluctuates in a manner
that is characteristic of a leak. Pump shutdown, indicator
light and alarm activation if leak is declared.
|
|
Calibration
|
System
must be checked annually.
Standard electronic field instruments used by the system
requires normal annual inspection and calibration checks.
|
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Comments
|
Designed
to replace a mechanical line leak detector to detect equivalent
3 gph releases at 10 psi on large pipelines at pressures
higher than those found at typical service station.
|
