if water comes into contact with hot bitumen there is a risk of a violent reaction. In contact with hot bitumen the water evaporates and expands in volume which leads to splattering. In a storage tank or truck the pressure can increase and result in a violent eruption of hot bitumen. If closed, the truck or tank could explode or rupture. Examples of risks of boil-over: • previous load of bitumen emulsion or any product with high water content • cold truck (water condensation/mist) • trapped water in storage tank.
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