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Issue
Date: November 22, 1995
Revision Date: February 28, 2006
INCON
Intelligent Controls, Inc.
TS-750,
TS-1000, TS-1001, TS-2001, TS-5, TS-608, TS-550, TS-5000
(INCON Magnetostrictive Probe)
AUTOMATIC
TANK GAUGING METHOD
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Certification
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Leak
rate of 0.2 gph with PD = 95.7% and PFA = 4.3%.
Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1%.
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Leak
Threshold
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0.1
gph for leak rate of 0.2 gph.
0.05 gph for leak rate of 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.
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Applicability
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Gasoline,
diesel, aviation fuel, fuel oil #4.
Other liquids with known coefficients of expansion and
density may be tested after consultation with the manufacturer.
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Tank
Capacity
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Maximum
of 30,000 gallons for leak rate of 0.2 gph.
Maximum of 15,000 gallons for leak rate of 0.1 gph.
Tanks less than 95% full may be tested.
Minimum product level required based on tank diameter
is as follows:
48" dia/min 12";
64" dia/min 14";
72"dia/min 15";
96" dia/min 17.5";
126"dia/min 21.5".
For other tank diameters, see evaluation report.
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Waiting
Time
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Minimum
of 4 hours 9 minutes between delivery and testing for
leak rate of 0.2 gph.
Minimum of 5 hours 18 minutes between delivery and testing
for leak rate of 0.1 gph.
None between dispensing and testing.
There must be no delivery during waiting time
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Test
Period
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Length
of the test is determined automatically based on quality
of test data.
Average data collection time during evaluation was 6 hours,
51 minutes for leak rate of 0.2 gph.
Average data collection time during evaluation was 5 hours
44 minutes for leak rate of 0.1 gph.
Test data is acquired and recorded by system's computer.
Leak rate is calculated from data determined to be valid
by statistical analysis.
There must be no dispensing or delivery during the test.
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Temperature
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Probe
contains 5 thermistors to monitor product temperature.
At least one thermistor must be submerged in product during
testing.
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Water
Sensor
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Must
be used to detect water ingress.
Minimum detectable water level in the tank is 0.208 inch.
Minimum detectable water level change is 0.011 inch.
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Calibration
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Thermistors
and probe must be checked and, if necessary, calibrated
in accordance with manufacturer's instructions.
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Comments
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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.
TS-1000 and TS-1001 can support up to 4 tanks.
TS-2001 can support up to 8 tanks.
TS-5 can support up to 12 tanks.
TS-608 can support up to 8 tanks.
TS-550 and TS-5000 can support up to 72 tanks.
TS-750 can support up to 4 tanks, but does not provide
fuel logistics, remote monitoring and other business
management options available with TS-1000, TS-1001 and
TS-2001.
California regulations
require at least one test per month after routine product
delivery or when the tank is filled to within 10% of
the highest operating level of previous month. If the
0.1 gph test is used as a tank tightness test there
must be no water present in the backfill (groundwater
must be below the bottom of the tank), the tank must
be equipped with an overfill protection device, and
the product level in the tank must be at the overfill
protection device set point. Local agency pre-approval
is required. To use the 0.1 gph test as a monthly option
see title 23 CCR Section 2643 (b)(2).
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INCON
Intelligent Controls, Inc.
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Evaluator: Ken Wilcox Associates
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74
Industrial Park Rd.
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Tel: (816) 443-2494
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Saco,
ME 04072
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Date
of Evaluation: 08/05/92, 09/05/97, 05/14/98
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Tel: (800) 872-3455
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08/21/02,
01/18/06
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| E-Mail:
webadmin@incon.com |
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| URL:
www.incon.com |
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