Ever needed to temporarily “change” the use of a flammable/combustible liquid storage or process tank? The tank is designed to NFPA 30 for flammable and combustible liquids so there is no risk in this “change”?!?!? WRONG…SWITCH LOADING is a MAJOR RISK that facilities who store, handle, or process flammable liquids need to understand, but often do not. The lesser vapor pressure product works with the higher vapor pressure product to generate the conditions for an explosion inside the container! Add the fact that the product entering the tank is a “nonconductive” liquid and we have a recipe for disaster.