Hello! In this case, I think the best answer can be found in the risk factors: Hazard x Vulnerability x Exposure. If an earthquake occurs but infrastructure is not exposed, it will not be damaged or destroyed. If it is exposed, but isn't vulnerable, then it will not be damaged either (or it will be damaged to a lesser extent). Infrastructure can also operate unsafely during earthquakes, for example, moving and spinning equipment can suffer damage from the shaking, regardless of the structural vulnerability of the place that houses it.