In this paper, simulations are compared to experimental data obtained by the Nederlandse Gasunie.
The case that has been investigated is the interference between a cathodically protected underground
storage tank (UST) and a concrete foundation. Experiments show that the protection level at the side of
the UST near the concrete foundation is only –600 to –700 mV versus CSE, while the far field potential
is about -1200 mV. The interference can be mitigated by putting a PVC screen between the UST and
the concrete fundation. This increases the protection level on the tank with about -200 mV at the
foundation side, while the potential at the other side of the tank is hardly affected. The agreement
between the experimental data obtained on site and numerical simulations, using a two-layer model
that accounts for the ground water level, is very good.