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Issue
Date: February 17, 1998
Revision Date: April 14, 2015
TeleData,
Inc.
TankMate
Version 3.12, 3.20, 4.1
STATISTICAL
INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)
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Certification
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Leak
rate of 0.1 gph with PD = 99.8% and PFA = 0.02% for both
single and manifolded tank systems.
"If a method meets the requirement for detecting
a leak rate of 0.1 gph, it will meet the requirement for
0.2 gph.", according to "Standard Test Procedures
for Evaluating Leak Detection Methods: Statistical Inventory
Reconciliation Methods", EPA/530/UST-90/007, June
1990, Section 7.2.3, page 30.
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Leak
Threshold
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If
the absolute value of the calculated leak rate (gain or
loss) is less than the leak threshold and the minimum
detectable leak rate is less than or equal to 0.1 gph
(0.2 gph for the 0.2 gph test), the test result is "pass."
If the absolute value of the calculated leak rate is greater
than or equal to the leak threshold, the result is "fail."
If the minimum detectable leak rate exceeds 0.1 gph (0.2
gph for the 0.2 gph test) and the absolute value of the
calculated leak rate is less than the leak threshold,
the test result is "inconclusive."
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Applicability
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Gasoline,
diesel.
Other more viscous liquids may be tested after consultation
with the vendor.
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Tank
Capacity
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Maximum
of 60,000 gallons for single tank.
Maximum of 60,000 gallons cumulative capacity for manifolded
tank systems with no more than 3 tanks in the system.
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Data
Requirement
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Minimum
of 15 days of data is required.
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System
Features
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Method
of data analysis that system employs, and was used during
evaluation process, is exclusive of any external control
by vendor.
System consists of a fully automated software package
with embedded algorithms for conducting leak detection
testing. Consequently, third party evaluation procedure
demonstrated that system can be used in-house with no
requirement for direct vendor participation.
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Evaluation
Features
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Evaluator
tested this system for in-house use.
Computer program disk along with instructional documentation
was supplied by vendor to evaluator.
Evaluator, without vendor involvement, analyzed required
data and performed evaluation using program disk and accompanying
documentation. Vendor was NOT present as an observer during
evaluation.
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Comments
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46%
of data sets evaluated were from manifolded tank systems.
Of 41 data sets submitted for evaluation, all were analyzed
with conclusive results.
Median monthly throughput of tanks evaluated was 53,349
gallons.
Leak rates of 0.05, 0.10, and 0.20 gph were used in
the evaluation.
Data sets evaluated were supplied by the evaluator.
According to vendor, TankMate Versions 3.12 and 3.20
are the same software.
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TeleData,
Inc.
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Evaluator: Piotr Blass, Ph.D.
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900 East Ocean Blvd., Suite
250
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Tel: (407) 369-3467
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Stuart
,
FL
34994
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Date
of Evaluation:
05/15/97
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Tel: (772) 219-4661
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