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Issue Date: April 18, 1997
Revision Date: December 8, 2016
Veeder-Root
TLS-300i,
300J, 350, 350R, 350Plus, 450, Red Jacket ProMax and ProPlus
Monitoring Systems with CSLD
(Models 8463, 8473, 8493 Magnetostrictive Probes)
CONTINUOUS IN-TANK LEAK
DETECTION METHOD
(Continuous Automatic Tank Gauging)
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Certification |
Leak rate of 0.2 gph with PD = 100% and PFA
= 0%. |
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Leak Threshold |
0.16 gph for single tanks at 99% operating
mode.
0.15 gph for manifolded tank systems at 99% operating mode.
A tank system should not be declared tight and a message printed for the
operator, if the test results indicate a loss or gain that exceeds this
threshold. |
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Applicability |
Gasoline, diesel,
aviation fuel, biodiesel blends B6-B20 meeting ASTM D7467, biodiesel B100
meeting ASTM D6751, waste oil.
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Tank Capacity |
Maximum of 38,170 gallons for single tanks
and for all tanks manifolded together.
Contact manufacturer for tank system applications if total tank capacity
exceeds 30,000 gallons. |
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Throughput |
Monthly maximum of 221,890 gallons.
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Waiting Time |
Minimum of 3 hours stabilization time is
allowed between delivery and data collection. |
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Test Period |
Data collection time ranges from 5 to 28
days.
Data sampling frequency is every 1 to 4 seconds.
System collects data at naturally occurring product levels without
interfering with normal tank operation, and discards data from unstable
periods when system performs test. |
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Temperature |
Average for product is determined by a
minimum of 5 thermistors. |
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Water Sensor |
Must be used to detect water ingress.
Minimum detectable water level in the tank is 0.54 inch for model 8463 and
8493 probe.
Minimum detectable
water level in the tank is 0.75 inch for model 8473 probe.
Minimum detectable
water level in the tank is 0.38 inch when using TLS 350 with model 8463
probe with 88610x-0x0 water float and software version 30B or higher, or TLS
450 with software version 3A or higher.
Minimum detectable change in water level is 0.027 inch.
Minimum detectable
change in water level in tank is 0.01 inch when using TLS 350 with model
8463 probe with 88610x-0x0 water float and software version 30B or higher,
or TLS 450 with software version 3A or higher.
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Calibration |
Thermistors and probe must be checked
annually and, if necessary, calibrated in accordance with manufacturer's
instructions.
System set-up menu must be checked to verify that the 99% operating mode
option has been selected. |
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Comments |
During installation, the set-up menu
provides a choice between a 99% or a 95% operating mode.
This evaluation covers only the 99% operating mode.
At this time, there is no evaluation covering the 95% mode.
System reports a result of "pass" or "fail."
Evaluated using both single and manifolded tank systems
with probes in each tank.
System distinguishes large leak rates (> 1gph) from dispensing activities
and reports those as "fail" or as “no idle.”
For valid monthly testing, a conclusive test report must be produced for
each tank every month.
System warns operator if there are no “ passing” tests completed during the
month.
For very active tanks, a tank shut down may become necessary in order for
the system to collect enough quiet-time data for a test.
Constant and variable leaks were mathematically induced into tight tank test
records which were collected by systems installed at various active tank
sites.
The database for evaluation of the system included sites with vapor recovery
and blending dispensers.
Tanks used in this evaluation contained gasoline and diesel. |
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Veeder-Root |
Evaluator: Midwest Research
Institute |
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125 Powder Forest Dr. |
Tel: (816) 753-7600 |
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Simsbury, CT 06070-2003 |
Dates of Evaluations: 06/10/96,
04/02/02 |
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Tel: (860) 651-2700 |
Evaluator: Ken Wilcox
Associates |
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E-mail:
info@veeder.com |
Tel: (816) 443-2494 |
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URL:
www.veeder.com |
Date of Evaluation: 10/26/2007,
08/31/10 (water sensor) |
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