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Issue Date: June 21, 2013
ATMOS International
ATMOS STMS Statistical Tightness Monitoring System for Airports
Line Leak Detection Method for Airport Hydrant and Field Constructed Systems
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Certification |
Leak rate of
0.0019% of pipeline volume (0.000019 gph per gallon of product) at a defined
pressure of 150 psi in pipeline segment being tested with PD = >95% and PFA
= <5%.
The US EPA has not set a minimum detectable leak rate for large diameter
pipeline systems (airport hydrant systems) at the time of this evaluation. |
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Leak Threshold |
0.00095% of pipeline volume
(0.0000095 gph per gallon of product).
A pipeline
system should not be declared tight if the test results indicate a loss that
equals or exceeds the preset threshold.
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Applicability |
Gasoline,
diesel, aviation fuel, fuel oil #4, solvents, waste oil, biodiesel B6-B20
meeting ASTM D7467, biodiesel B100 meeting ASTM D6751, crude oil, petroleum
distillates in liquid form, cooling fluids, and water or water soluble
liquids.
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Specification |
System tests
either single or double-walled fiberglass or steel piping. |
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Pipeline Capacity |
Minimum of
2,000 gallons, maximum of 300,000 gallons. |
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Waiting Time |
None between delivery and
testing.
None between
dispensing and testing. |
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Test Period |
Minimum of 45 minutes after
setup for data collection.
Piping must
be isolated and blocked during test. |
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System Features |
System is permanently installed
on pipeline to perform monitoring.
Average test
time for data collection and analysis is 65 minutes. System performance is
expressed as a percentage of the piping volume per hour. |
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Calibration |
System must
be calibrated in accordance with manufacturer's instructions. |
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Comments |
System designed for use on
large underground bulk pipelines such as airport hydrant fueling systems.
Manufacturer claims system is
applicable to any size of underground pressurized piping, typically between
2,000 and 300,000 gallons.
The size of the detectable leak
scales upward with the size of the piping system.
The
third-party evaluation utilized a total of 24 tests. 16 of these tests were
conducted with various induced leak rates. |
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ATMOS International
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Evaluator:
Ken Wilcox Associates
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3100 East Miraloma Avenue,
Suite 240D
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Tel:
(816) 443-2494
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Anaheim, CA 92806
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Date of Evaluation:
06/30/08
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Tel: (714)
520-5325
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E-mail:
marketing@atmosinc.com |
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URL:
www.atmosi.com
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