Issue Date: November 22, 1995
Revision Date: September 10, 2004
Estabrook EZY CHEK Systems
(originally listed as Horner EZY CHEK)
EZY-Chek I
Volumetric Tank Tightness Test Method (Overfill)
Certification | Leak rate of 0.1 gph with PD = 99% and PFA = 1%. |
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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 product dispensing or delivery during waiting time. |
Test Period | Minimum of 1 hour, 30 minutes (30 minute monitor period, plus 1 hour test period). Testing must continue until data meets manufacturer's stop test criteria. Volume data are collected and recorded by a strip chart recorder. Leak rate is calculated from data of last 1 hour of test period. There must be no dispensing or delivery during test. |
Temperature | Average for product is determined by a resistance temperature detector (RTD) and displayed on a LCD readout. |
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 | Level sensors must be calibrated in accordance with manufacturer's instructions before each test. |
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: 10/03/90
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