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Issue Date: August 23, 1999
Revision Date: March 1, 2011
Veeder-Root
(originally listed as Marley Pump Co.)
Prolink System
RJE Probes # RE-400-094 thru 112-5
(Magnetostrictive Probes)
AUTOMATIC TANK GAUGING METHOD
| Certification |
Leak rate of 0.2
gph with PD = 99.95% and PFA = 0.005%.
Leak rate of 0.1 gph with PD = 95.2% and PFA = 0.5%. |
| Leak
Threshold |
-0.116 gph to
declare a leak for leak rate of 0.2 gph.
0.084 gph to declare a gain for leak rate of 0.2gph.
-0.065 gph to declare a leak for leak rate of 0.1 gph.
0.035 gph to declare a gain for leak rate of 0.1 gph.
A tank system should not be declared tight if the test indicates a loss or
gain that equals or exceeds the threshold. |
| Applicability |
Gasoline,
diesel, biodiesel blends B6-B20 meeting ASTM D7467, biodiesel B100 meeting
ASTM D6751.
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| Tank
Capacity |
Maximum of 18,000
gallons.
Tanks less than 95% full may be tested.
Minimum product level required is based on tank diameter as follows:
48" dia/ min 16";
64" dia/ min 21";
72" dia/ min 24";
126" dia/ min 41".
For other tank diameters, see evaluation report. |
| Waiting
Time |
Minimum of 13
hours 54 minutes between delivery and testing.
Minimum of 10 minutes between dispensing and testing.
There must be no delivery during waiting time. |
| Test
Period |
Minimum of 4
hours, 31 minutes for leak rate of 0.2 gph.
Minimum of 6 hours, 39 minutes for leak rate of 0.1 gph.
Test data are acquired and recorded by system's computer.
Leak rate is calculated from all the data collected during entire test
period.
There must be no dispensing or delivery during testing. |
| Temperature |
Probe contains 5
or more resistance temperature detectors (RTDs) to monitor product
temperature.
At least one RTD must be submerged in product during testing. |
| Water
Sensor |
Must be used to
detect water ingress.
Minimum detectable water level in the tank is 0.106 inches.
Minimum detectable change in water level is 0.058 inches. |
| Calibration |
RTDs and probe
must be checked and, if necessary, calibrated in accordance with
manufacturer's instructions. |
| Comments |
Not evaluated
using manifolded tank systems. Therefore, this certification is only
applicable when there is a probe used in each tank and the siphon is broken
during testing.
System has a bias
of -0.016 gph for leak rate of 0.2 gph.
System has a bias of -0.015 gph for leak rate of 0.1 gph.
Tests only the portion of tank containing product.
As product level is lowered, leak rate in a leaking tank decreases (due to
lower head pressure).
Consistent testing at low levels could allow a leak to remain
undetected.
EPA leak detection regulations require testing of the portion of the tank
which routinely contains product. |
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Veeder-Root
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Evaluator:
ADA Technologies, Inc.
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125 Powder Forest Dr.
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Tel: (303) 792-5615
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Simsbury, CT 06070-2003
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Date of Evaluation:
10/29/96
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Tel: (860) 651-2700
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E-mail: info@veeder.com |
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URL: www.veeder.com |
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