Issue Date: May 5, 2021
Dover Fueling Solutions
DFS DX Wetstock SIR V1.0 SIR and V1.2 SIR
STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)
| Certification | Leak rate of 0.1
gph with PD of 99.57 % and PFA 0.43% (V1.0). Leak rate of 0.2 gph with PD = 99.9998% and PFA = 0.000142% (V1.2). |
| Leak Threshold | 0.05 gph for leak
rate of 0.1 gph (V1.0). 0.1 gph for leak rate of 0.2 gph (Version 1.2). A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this threshold. |
| Applicability | Gasoline, Diesel & Kerosene. |
| Tank Capacity | The largest
single tank size for non-manifolded tank system 31,876 gallons - No larger
than 121,343 gallons for single tank. Maximum tank system size the SIR method may be applied to is 121,343 gallons. Maximum number of tanks in manifolded tank system can be 3. |
|
Throughput Data Requirement |
Maximum monthly
throughput of 790,575 gallons. Must be exactly 30 days, no more, no less. |
| Comments | 63% of data sets
evaluated were from manifolded tank systems. Inventory data can be recorded manually or entered by hand into computer. Conditions where the statistical inventory method is inadequate: Insufficient or excess number of usable records-(must be 30 days of data) Irregular time intervals between dipstick reading Unacceptable daily variability of inventory Missing data in any field on the required data form Missing over or short calculation on the form Data sets evaluated were randomly selected from a database of inventory records maintained by evaluator. Dispensing meter errors are compensated for. Calibration errors are compensated for. |
|
Dover Fueling Solutions |
Evaluator:
Ken Wilcox Associates |
|
Austin, TX 78728
|
Tel:
(816) 443-2494 |
|
Date of
Evaluation: September 30, 2020
|
|
|
Phone: +44 (0)
1695 51775
|
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Equipment should be installed and operated in accordance with all applicable
laws and regulations. For full details, please refer to our expanded "DISCLAIMER"
page.