Specialty Tanks

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Glossary

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4.3.1   Double-wall UST Systems

 

These systems are equipped with double-wall tanks or double-wall piping, or both.  

 

Double-wall UST Systems must have a means for detecting a release from the inner wall of the double-wall tank or piping.   The leak detection method must be able to detect a leak rate of 0.2 gallons per hour (GPH) (place the mouse over the gas tank image).

 

There are four primary methods for detecting a leak:

1.           Brine solution

2.           Vacuum

3.           Pressure

4.           Dry