Issue Date: April 18, 1997
Revision Date: November 14, 1997

Absolute Precision Testing Systems

APT/BKG 1000


Certification Leak rate of 0.05 gph with PD = 99.2310% and PFA = 0.5451%.
Leak Threshold 0.02587 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.
Tank Capacity Maximum of 6,000 gallons. Tank must be minimum 100% full.
Waiting Time Minimum of 36 hours between delivery and testing.
Minimum of 1.5 hours between "topping off" and testing.
Total minimum waiting time is 36 hours.
There must be no dispensing or delivery during waiting time.
Test Period Minimum of 1 hour, 48 minutes.
Volume data is collected and recorded by a computer.
Leak rate is calculated from 1 minute of test.
There must be a minimum of 10 tests performed to conclusively declare a tank tight or declare a leak.
There must be no dispensing or delivery during test.
Temperature Average for product is determined by a resistance temperature sensor.
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 a height difference of 6 feet between product and water level.
Calibration Level sensors must be calibrated before each test.
Temperature sensor must be checked and, if necessary, calibrated in accordance with manufacturer's instructions.
Comments Not evaluated using manifolded tank system.


Absolute Precision Testing Systems

Evaluator:  Dixon Consulting Inc.

Manufacturer’s Previously Listed Contact Information is No Longer Valid.

Tel:  (812) 332-4144


Date of Evaluation:  12/05/95




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