Double-Wall Tanks
Envirotank Double-Wall Tanks deliver state-of-the-art protection
Envirotank Double-Wall Tanks give you two levels
of protection, so you have twice the assurance and twice the risk
management that any single-wall tank can offer. Both the primary
tank and outer tank are structurally designed to contain your fuel.
In the unlikely event that there is a breach in the primary tank,
the outer tank will contain your product and prevent a spill into
the environment at normal operating conditions and test pressures.
System testing assures you of product tightness
Continued assurance in the integrity of Envirotank double-wall
tanks can be determined by testing at the jobsite - prior to, during
and after installation - to prove the durability and product tightness
of both the primary and outer tanks. With some competitive tanks,
the secondary walls or jackets cannot be positive pressure tested
during or after the tanks have been installed.
Continuous monitoring and precision tank-testing
capabilities are built in
Because it is comforting to be able to test the ongoing
integrity of any storage tank, Envirotank built into each of our
double-wall tanks both continuous monitoring and precision tank-testing
capabilities. Envirotank Double-Wall Tanks provide a defined annular
space to accommodate virtually any type of monitoring method you
choose - wet or dry.
Our tanks can be supplied with a factory installed
HydroGuard® Monitoring System with a coloured monitoring fluid.
The brine is a dark blue colour preinstalled in the interstitial
space at the factory and is used to perform visual leak testing
during shipment and at the jobsite.
We recommend the HydroGuard® Monitoring
System because it offers a leak detection capability that is superior
to other methods. It constantly monitors 100% of both the inner
and outer walls under all installed conditions. Steel tanks do not
offer this feature.
The HydroGuard® Monitoring System can also double as a precision
tank test, which has been independently tested and validated to
meet EPA & AIP precision tank-testing requirements, able to
detect leaks as small as 0.76 litres per hour.
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