Issue Date: November 22, 1995
Revision Date: May 23, 2007
Estabrook EZY CHEK Systems
(originally listed as Horner EZY CHEK)
EZY-Chek II
Volumetric Tank Tightness Test Method (Overfill)
| Certification | Leak rate of 0.1 gph with PD = 99.95% and PFA = 0.05%. |
|---|---|
| Leak Threshold | 0.05 gph. 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, aviation fuel, fuel oil #4. Other liquids with known coefficients of expansion and density may be tested after consultation with the manufacturer. |
| Tank Capacity | Maximum of 12,000 gallons. Tank must be minimum 100% full. |
| Waiting Time | Minimum of 6 hours between delivery and testing. Minimum of 3 hours between "topping off" and testing. Total minimum waiting time is 6 hours. There must be no delivery or dispensing during waiting time. |
| Test Period | Minimum of 1 hour, 40 minutes (33 minutes monitor mode and 1 hour, 7 minutes test mode). At the conclusion of test mode, data are checked for the manufacturer's stop test criteria. If data do not meet the criteria, testing must continue. Test data are acquired and recorded by system's computer. Leak rate is calculated from last 1 hour, 7 minutes of test period data. There must be no dispensing or delivery during test. |
| Temperature | Average for product is determined by a resistance temperature detector (RTD). |
| Groundwater | Depth to groundwater in tank excavation backfill must be determined. If groundwater is above bottom of tank, product level must be adjusted to provide net pressure of 2-4 psi at bottom of tank. Groundwater level must be stable prior to and during test. |
| Calibration | Load cell must be calibrated in accordance with manufaturer's instructions before each use. |
| Comments | Not evaluated using manifolded tank systems. |
- Estabrook EZY CHEK Systems
1505 Woodside Ave.
Essexville, MI 48732
Tel: (989) 891-9868
E-mail: sales@ezychek.com
URL: www.ezychek.com - Evaluator: W. A. Kibbe and Associates
Tel: (517) 797-2425
Date of Evaluation: 09/18/90
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