08/11/2025
BOILING LIQUID EXPANDING V***R EXPLOSION (BLEVE)
A BLEVE happens when a pressurized liquid container, such as an LPG or propane tank, is exposed to extreme heat and can no longer contain the pressure building inside.
When flames heat the metal shell, the liquid inside starts boiling, creating rapidly rising v***r pressure. As the temperature continues to climb, the tank wall weakens, until it suddenly ruptures — releasing the superheated liquid that instantly flashes into v***r and ignites in a massive fireball explosion.
How It Happens
1. HEAT – External fire or radiant heat warms the tank surface.
2. PRESSURE BUILDS – The liquid expands, v***r pressure increases.
3. RUPTURE & EXPLOSION – The weakened tank fails, releasing v***r that ignites instantly.
🚒 Firefighter & Public Safety Tips
• Cool tanks continuously with a fog stream to keep metal temperatures down.
• Never stand in line with the tank ends — these become missile zones when rupture occurs.
• Evacuate the area and maintain a minimum 500-meter safety distance.
• Call emergency responders immediately — don’t try to move or extinguish burning LPG on your own.
💡 Remember:
A BLEVE is a race between heat and cooling — once the fire wins, the explosion follows.
Disclaimer:⚠️
No — LPG tanks are built with safety valves to prevent over-pressure.
But if the tank is exposed to flames long enough, the metal weakens faster than it can vent pressure — and that’s when BLEVE becomes inevitable.
In direct fire exposure, a BLEVE can occur in as little as 5–10 minutes.
