Where should streams be directed to prevent a BLEVE?

To effectively prevent a Boiling Liquid Expanding Vapor Explosion (BLEVE), streams should be directed at the area where the tank is being heated. A BLEVE occurs when a liquid in a pressurized tank is suddenly released due to an external heat source, causing the liquid to vaporize rapidly and potentially lead to an explosion.

By targeting the area being heated, firefighters can cool the tank and reduce the likelihood of the pressure inside reaching a critical point where the tank could rupture. This cooling mechanism helps stabilize the pressure and temperature within the tank, thereby preventing the catastrophic failure associated with a BLEVE.

Directing water at the tank ends, on the protective dome, or on the relief valve may not effectively counteract the heat being applied to the main body of the tank, which is usually the source of the danger. The heat generated in the vicinity of the tank's wall can compromise its structural integrity, so prioritizing cooling in that specific area is crucial for safety.