Precision Tank Testing

Precision Tank Testing
Cathodic Protection
Corrosion Monitoring
Asbestos Abatement
Mold Remediation

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Schedule a Tank Test

We currently offer computerized storage tank testing which is the latest technology available in the industry. This advanced test system is designed to give accurate on-site results in less than 90 minutes. First Action uses tank testing methodology which meets or exceeds all state and federal EPA requirements and our company is licensed by the state to test regulated underground tanks.

Specifically, our tank testing involves a two part procedure. The first part is the Precision Tank Test which checks the integrity of the filled portion of the tank by measuring the changes in the net buoyancy forces on an electronic probe. The second part, the Ullage Test, checks the integrity of the empty portion of the tank and the piping using acoustical profiling to determine if there is a leak. 

How it worksAbove ground
storage tank leak detection and testing
Filled portion test - evaluates the portion of the tank that is filled with liquid.
  1. Our technician lowers an electronic probe and electronic load cell into the tank through the fill pipe.

  2. The electronic probe is suspended inside the tank and hangs from the load cell. The probe actually floats in the liquid fuel inside the tank approximately 1'' from the tank bottom.

  3. The electronic probe and cell measure minute changes in mass of the liquid fuel inside the tank. Measuring mass changes eliminates the need to correct for the liquid fuel's temperature expansion and contraction.

  4. Specifically, if water enters the tank, the electronic probe rises. If liquid fuel leaks from the tank, the probe falls. These changes in mass are instantly recorded in a unit called a data logger.

  5. The data logger readings are transferred to a computer, which transforms the readings into a graphic illustration of the integrity of the liquid fuel portion of the tank.
Empty portion test - evaluates the empty portion of the tank and piping.


  1. Our technician lowers a digital acoustical probe inside the tank.

  2. The probe monitors the acoustical signals in the empty portion of the tank and piping.

  3. Our computer converts these acoustical signals into a graphic & acoustical profile of the integrity of the empty portion the tank and associated piping.
First Action Testing Advantages:
Test results in 2 hours.

Test is not affected by high water tables and clay soil.

Test can distinguish between leaks in the piping and leaks in the tank. This unique feature enables us to isolate oil tank leaks and therefore, we can distinguish between major repairs requiring tank closure and minor repairs such as tightening a fitting or replacing a leaking vent/fill pipe. Other companies offering test methods without this feature usually recommend removing the entire tank from the ground when all that was needed was a minor inexpensive piping repair. Our data shows that 80-85% of tank tightness failures only require minor repairs, thus, saving tank owners thousands of dollars in unnecessary remediation costs.

No danger of damaging the tank.

Test is approved in all states by the Federal EPA.

Test distinguishes leaks in the empty portion (vent and fill pipes) from leaks in the filled (wetted portion) of the tank.
Test is computerized for precise analysis of test results. This eliminates operator error during data collection.
Other Services

In addition to tank testing, First Action offers underground tank location services and soil testing. We will certify the absence or existence of abandoned underground storage tanks on the property using specially designed underground storage tank detectors. We also have a reliable procedure for determining whether the soil is free of contamination. We recommend our soil testing procedure exclusively for inactive or abandoned underground tanks.

Copyright 2003, First Action Systems, LLC All rights reserved.
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