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Issue Date: July 2, 2001
Revision Date:
December 21, 2005
Varec, Inc.
(originally
listed as Coggins Systems, Inc. and later as Endress + Hauser Systems and
Gauging)
FuelsManager
with Barton 3500 Dual-Pressure
Transducer ATG
AUTOMATIC TANK GAUGING METHOD
| Certification |
Leak
rate of 0.2 gph with PD = 95.3% and PFA = 4.7%. |
| Leak
Threshold |
0.1
gph.
A tank 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 fuel. |
| Tank
Capacity |
Maximum
of 75,000 gallons.
Tank must be between 50 and 95% full. |
| Waiting
Time |
Minimum
of 4 hours between delivery and testing.
Minimum of 2 hours between dispensing and testing.
There must be no delivery during waiting time. |
| Test
Period |
Minimum
of 24 hours.
Test data are acquired and recorded by system's computer.
Leak rate is calculated from the average of subsets of all data collected.
There must be no dispensing or delivery during test. |
| Temperature |
Measurement
of product temperature is not required by this system. |
| Water
Sensor |
Must
be used to detect water ingress.
Minimum detectable water level in the tank is 0.509 inch.
Minimum detectable change in water level is 0.225 inch. |
| Calibration |
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.
Tests only 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
system which routinely contains product. |
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Varec, Inc.
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Evaluator: Ken Wilcox
Associates
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5834 Peachtree Corners
East
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Tel: (816) 443-2494
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Norcross, Ga 30092
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Date of Evaluation: 03/15/00
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Tel: (770) 447-9202
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