Issue Date: November 22, 1995
Revision Date: February 28, 2006
INCON Intelligent Controls, Inc.
TS-750, TS-1000, TS-1001, TS-2001, TS-5, TS-608, TS-550, TS-5000 (INCON Magnetostrictive Probe)
Automatic Tank Gauging Method
Certification | Leak rate of 0.2 gph with PD = 95.7% and PFA = 4.3%. Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.1%. |
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Leak Threshold | 0.1 gph for leak rate of 0.2 gph. 0.05 gph for leak rate of 0.1 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 30,000 gallons for leak rate of 0.2 gph. Maximum of 15,000 gallons for leak rate of 0.1 gph. Tanks less than 95% full may be tested. Minimum product level required based on tank diameter is as follows: 48" dia/min 12"; 64" dia/min 14"; 72"dia/min 15"; 96" dia/min 17.5"; 126"dia/min 21.5". For other tank diameters, see evaluation report. |
Waiting Time | Minimum of 4 hours 9 minutes between delivery and testing for leak rate of 0.2 gph. Minimum of 5 hours 18 minutes between delivery and testing for leak rate of 0.1 gph. None between dispensing and testing. There must be no delivery during waiting time |
Test Period | Length of the test is determined automatically based on quality of test data. Average data collection time during evaluation was 6 hours, 51 minutes for leak rate of 0.2 gph. Average data collection time during evaluation was 5 hours 44 minutes for leak rate of 0.1 gph. Test data is acquired and recorded by system's computer. Leak rate is calculated from data determined to be valid by statistical analysis. There must be no dispensing or delivery during the test. |
Temperature | Probe contains 5 thermistors to monitor product temperature. At least one thermistor must be submerged in product during testing. |
Water Sensor | Must be used to detect water ingress. Minimum detectable water level in the tank is 0.208 inch. Minimum detectable water level change is 0.011 inch. |
Calibration | Thermistors and probe must be checked and, if necessary, calibrated in accordance with manufacturer's instructions. |
Comments | Not evaluated using manifolded tank systems. Therefore, this certification is only applicable when there is a probe used in each tank and the siphon is broken during testing. California regulations require at least one test per month after routine product delivery or when the tank is filled to within 10% of the highest operating level of previous month. If the 0.1 gph test is used as a tank tightness test there must be no water present in the backfill (groundwater must be below the bottom of the tank), the tank must be equipped with an overfill protection device, and the product level in the tank must be at the overfill protection device set point. Local agency pre-approval is required. To use the 0.1 gph test as a monthly option see title 23 CCR Section 2643 (b)(2). |
- INCON Intelligent Controls, Inc.
74 Industrial Park Rd.
Saco, ME 04072
Tel: (800) 872-3455
E-mail: webadmin@incon.com
URL: www.franklingrid.com - Evaluator: Ken Wilcox Associates
Tel: (816) 443-2494
Date of Evaluation: 08/05/92, 09/05/97, 05/14/98, 08/21/02, 01/18/06
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