Double-Wall Tanks
HydroGuard® Monitoring System guards against leaks and liabilities
Click to see it in action!
Envirotank recommends the HydroGuard® Monitoring
System for double-wall tanks because of its superior leak detection
capability. By filling the cavity between the inner and outer tank
walls with a non-hazardous liquid, hydrostatic pressure is continuously
applied to both the primary and secondary tank. This system is capable
of detecting tank leaks in either the primary or secondary tank
walls for all installed conditions.
The HydroGuard® Monitoring System, with a stand
pipe, can also serve the dual function of a precision tank test.
The system has been independently tested and statistically
validated to meet EPA and AIP criteria as a precision tank test.
Using a stand pipe, the system has been shown to be capable of detecting
leaks as small as 0.76 litres per hour with a 99.9% probability
of detection and less than a 1.2% probability of a false alarm.
Envirotank Double-Wall tanks include the fibreglass
reservoir necessary for the HydroGuard® Monitoring System. The
HydroGuard® Monitoring System provides continuous leak detection
while avoiding false alarms caused by changes in product temperature,
product level or groundwater conditions.
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