Recent content by seeker11

Yes, there was a propane heater mounted on the wall inside the building that turns on when it gets cold, and that was likely the ignition source since it coincides with the timing of the fire. The building did catch on fire, and the building inside got hot, this is the general fire that...

I apologize. The WR-360 is filled with about 40 gallons of water and it does not contain any propane. There was another tank leaking propane into the building which the WR-360 sits. What we are trying to figure out post-mortem is, if there was a propane gas explosion in the building (a flash...

Unfortunately, all we have are the pictures. :frown: If the WR-360 was in a propane explosion, will it rupture as it appear in the picture? I guess the air will instantaneously reach the combustion temperature, which weakens the 1/16 inch steel wall, and the inside pressure differential will...

Twigg, I apologize, I am trying to follow the math...shouldn't the above r ratio have a square or cubic relationship? I'm trying to match it to below, both have some type of exponent...

The skinny cylinder on the immediate left of the split tank is an EMPTY heavy duty gas cylinder, it was used to store propane, but it contained just air at the time of fire, and it does not appear to be damaged. Both the split tank (WR-360) and the skinny cylinder stood vertically along the...

Baluncore, one thing that troubled us is if it's a slow burning fire then we would expect to see more melting of the surrounding items, such as the red rubber hoses, or the yellow insulation sheets. Another strange thing is the skinny cylinder immediately to the left showed some charring from...

The amount of water inside the 120 gallon tank could NEVER EXCEED 40 gallons, since the tank is used to apply slight static pressure to prevent water backflow. Given that, I need to replace ##231in^3## with ##(40 * 231)in^3## and re-calculate? Twigg, to make sure I understand ##11200psia##...

Twigg, fortunately nobody was hurt...Apparently we are in the presence of big brains that I only read stories about. :bow: :biggrin: Yes this rough estimation is what we are looking for. So according to the back-of-the-envelope calculation, there is likely to be less than 0.01 PSI of pressure...

All very astute and pragmatic observations! This tank is actually designed to operate only at 38 PSI, it supplies low level pressure in water pipes to prevent backflow. It is built with 16 gauge cold rolled steel wall, so 125 PSI is already 3X of its normal operating range. As you can see...

PROBLEM: A 120 gallon tank (26" diameter, 60" height) containing 40 Gallons of water is heated up until the tank ruptures from overpressure at 125 PSI (maximum tank rating). How to calculate the initial escaped steam velocity at the ruptured tank, assuming the gash is 2 feet long in the...