Where should streams be directed to prevent a BLEVE?

To prevent a Boiling Liquid Expanding Vapor Explosion (BLEVE), it is crucial to direct streams at the area where the tank is being heated. When a tank containing pressurized liquid is exposed to heat, the liquid inside can vaporize rapidly, increasing the pressure and potentially leading to a rupture. By cooling the tank's surface directly where it is being heated, firefighters can help reduce the temperature of the liquid and its pressure, thereby minimizing the risk of a BLEVE.

Cooling the tank rather than other areas ensures that the heat source's impact is mitigated, giving firefighters a chance to stabilize the situation. The relief valve, protective dome, and tank ends do not address the immediate need to cool the heated section effectively, which is the primary concern when dealing with the threat of BLEVE.