Having Magnetic Shielding Systems In Commercial Buildings. Magnetic fields are also health hazards in some situations. While there is no evidence that correlates weak field exposure with any harmful disease, strong fields can cause a number of health effects. Power stations incorporate shielding because the most obvious among these is the fact that a strong field can generate high currents with sparks that can ignite fire and deliver shocks. Keywords: Anne Mosley, Magnetic field shielding, magnetic shielding design