Steam Explosion 1

[Hermanmv]

I am battling to get a TNT equivalent of a steam line break. I have a steam line with steam at 60.9bar at 270 degrees celcius, the mass flow is 1.7 tons per second. I'm postulating a guillotine break on this line and trying to predict the severity of the blast.

 

[israelkk]

Here is stored energy per pressure in vessel from MIL-STD-1522.