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Issue Date: November 22, 1995
Revision Date: March 26, 2009
SIR
International, Inc.
Mitchell's SIR
Program Versions 2.6, 2.7
STATISTICAL INVENTORY
RECONCILIATION TEST METHOD (QUANTITATIVE)
| Certification |
Leak rate of 0.2
gph with PD = 99% and PFA = 1% (Version 2.7).
Leak rate of 0.1 gph with PD = 99% and PFA = 1% (Version 2.6). |
| Leak
Threshold |
0.10 gph for a
leak rate of 0.2 gph (Version 2.7).
0.05 gph for a leak rate of 0.1 gph (Version 2.6).
These leak thresholds are for evaluation purposes only.
A tank system should not be declared tight if the test result indicates a
loss or gain that equals or exceeds the leak threshold calculated from the
data set. This leak threshold may be different than the above leak
thresholds. |
| Applicability |
Gasoline,
diesel. |
| Tank
Capacity |
Maximum of 45,000
gallons for single tanks.
Maximum of 45,000 gallons cumulative capacity for manifolded tank systems
with no more than 4 tanks in system. |
| Data
Requirement |
Minimum of 23
days of product level and flow through data. |
| Comments |
68% 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 22,370 gallons.
Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation.
Data sets used in this evaluation were supplied by evaluator.
100% of inventory data used in this evaluation were gauge stick readings.
Gains (water ingress) are analyzed and evaluated on an individual basis.
The same data sets were used for both the 1995 and 1997 evaluations. |
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SIR
International, Inc.
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Evaluator:
Ken
Wilcox Associates
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P.O. Box 2406
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Tel:
(816) 443-2494
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Georgetown, TX 78627
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Dates of
Evaluation: 01/27/92, 06/8/95,
07/27/97
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Tel:
(800) 793-1919
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Fax: (866) 469-3665 |
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sir@sirtx.com |
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