Issue Date: February 17, 1998
Revision Date: April 14, 2015
Versions 3.12, 3.20, 4.1
RECONCILIATION TEST METHOD (QUANTITATIVE)
||Leak rate of 0.1
gph with PD = 99.8% and PFA = 0.02% for both single and manifolded tank
"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.
This leak threshold is 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 threshold.
Gains (water ingress) are analyzed and evaluated on an individual basis.
||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.
||Minimum of 15
days of data is required.
||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.
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.
||46% of data sets
evaluated were from manifolded tank systems.
Of 41 data sets submitted for evaluation, all were analyzed with
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 used the same legacy software language to program those versions and Version 4.1 used current software language to program this version.
Piotr Blass, Ph.D.
900 East Ocean Blvd., Suite 250
Date of Evaluation:
The Comparison of Version 4.1 with Version 3.20 Was Performed by Dr. Bob Mitchell, SIR International
|Date of Comparison: