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Issue
Date: November 22, 1995
Revision Date: June 25 2002
Veeder-Root
(originally listed as EnviroQuest Technologies
Limited and later as Watson Systems, Inc.)
Watson
SIRAS Software System Versions 2.0, 2.8.3
STATISTICAL
INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)
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Certification
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Leak
rate of 0.2 gph with PD = 99.999% and PFA = 0.01%
Leak rate of 0.1 gph with PD = 99.3% and PFA = 0.7%
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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 0.2 gph
(0.1 gph for the 0.1 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 0.2 gph (0.1
gph for the 0.1 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 30,000 gallons.
Size limits using an acceptable protocol for manifolded
tank systems have not been determined.
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Data
Requirement
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Minimum
of 30 days of usable product level and flow through data.
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System
Features
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Backup
technical support for the end user was part of the service
feature of these SIR versions and was provided through
contract with Watson Systems, Inc.
Since these SIR versions are now owned by USTMAN Technologies,
Inc., information, assistance, and technical support for
these versions are at their discretion.
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Comments
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Not
evaluated for in-house use that is independent of vendor
participation.
Not evaluated for manifolded tank systems using an acceptable
protocol. 27% of data sets evaluated were from manifolded
tank systems.
Of 56 data sets submitted for evaluation, 6 were not analyzed
due to unusable data.
Median monthly throughput for tanks evaluated was 73,518
gallons.
Leak rates ranging from 0.0458 to 0.2500 gph were used
in evaluation.
Data sets evaluated were supplied by evaluator.
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| Gilbarco/Veeder Root |
Evaluator: Midwest Research Institute
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| Attn: CMS Mailstop F-76 |
Tel: (816) 753-7600
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| 7300
West Friendly Ave. |
Date of Evaluation: 08/23/93
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| P.O. Box 22087 |
|
Greensboro, NC 27420-2087 |
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| Tel: (800) 253-8054
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