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Issue Date: June 22, 2012
OPW Fuel Management Systems
Model 327 VLLD Line Leak Detector
(for Rigid, Flexible, or Hybrid Combination of Rigid and Flexible Pipelines)
AUTOMATIC ELECTRONIC LINE LEAK DETECTOR
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Certification
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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 = 97.9% and PFA = 2.1%.
*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.
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Leak
Threshold
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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.
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Applicability
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Gasoline, diesel, aviation fuel, ethanol blends up through E100, biodiesel blends B6-B20 meeting ASTM D7467, biodiesel B100 meeting ASTM D6751*.
Other liquids may be tested after consultation with the manufacturer.
*NWGLDE Listings apply to leak detection functionality only and not material compatibility - see "Disclaimer".
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Pipeline Capacity
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For all leak rates 3.0 gph, 0.2 gph and 0.1 gph:
- Maximum of 425.8 gallons for rigid pipelines.
- Maximum of 109.8 gallons for flexible pipelines.
- Maximum combined capacity is 535.7 gallons, not to exceed the above individual capacity limitations for rigid or flexible pipelines.
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Waiting Time
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None between delivery and testing.
None between dispensing and testing for all leak rate 3.0 gph, 0.2 gph and 0.1 gph. |
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Test
Period
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Response time is 3 minutes or less for leak rate of 3.0 gph.
Minimum of 204 minutes for leak rate of 0.2 gph.
Minimum of 204 minutes for leak rate of 0.1 gph.
Test data are acquired and recorded by a microprocessor.
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System Features
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Permanent installation on pipeline.
Automatic testing of pipeline every 45 minutes for leak rate of 3.0 gph.
Automatic testing of pipeline for leak rate of 0.2 gph based upon thermal condition.
Automatic testing of pipeline for leak rate of 0.1 gph based upon thermal conditions.
Preset threshold.
Single test to determine if pipeline is leaking.
Pump shutdown, indicator light, and alarm activation if leak is declared.
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Calibration
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System must be checked annually and, if necessary, calibrated in accordance with manufacturer's instructions.
Equipment must be checked annually for capability of detecting a line leak of 3.0 gph and, if necessary, calibrated in accordance with manufacturer's instructions. |
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OPW Fuel Management Systems
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Evaluator: Ken Wilcox Associates
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6900 Santa Fe Dr.
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Tel: (816) 443-2494
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Hodgkins, IL 60525
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Date
of Evaluation: 03/26/12
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Tel: (708) 485-4200
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E-Mail: info@opwfms.com
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URL: www.opwglobal.com
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