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An update, as requested by TiCL4, and wrapping up other loose ends: 1) We fully designed our own system (minus the portion requiring input from Fauske's vent sizing service), and once that was finished we contacted Fauske. The team at Fauske was great, and provided us good feedback and two...

Georgeverghese, Nailed it. We are using a different catalyst, but it is all the same idea. Part a) can be taken care of by making the burst disc as large as feasibly possible. Part b) can be taken care of with proper temperature monitoring and a tank cooling system. If the temperature...

Georgeverghese, Here is some background, I have erred on the side of being too detailed so I apologize for the length: The purpose of this tank is to be used as a propellant tank when hot fire testing rocket engines on a test stand that use hydrogen peroxide as an oxidizer. For a test fire...

George, Thanks for the assist. The pressurized storage time is <24 hours because it is used as a propellant tank for hot fire tests.

Hi all, I have postedI am working on a rocket engine that will use HTP (98% concentrated hydrogen peroxide) as an oxidizer. Right now I am designing the hot fire testing tanks. Peroxides are awfully hard to work with because they continuously decompose, but I've found resources to get me along...

Also, racookpe1978 I believe you are correct, my apologies.

jGKRI, You beat me to the point - I just finished that section of ASCE 113 and was going to bring that up. I will look into the leveling screws. Many thanks to all!

Also, thank you for the reference to ASCE 113, I am looking into that.

Dauwerda, For the compression and bearing area calculations I was going to assume that the total projected area of the four nuts would be bearing those loads. Since the engine fires up into the structure there would be no compressive load other than the dead weight of the structure

Sorry for the confusion: The idea of it being movable is that we would remove the baseplates from the post-installed anchors, take it to some different concrete pad, and then install it there. HotRod10, why are you able to ignore the moment due to the shear? I was under the assumption that by...

The concrete pad is a sticking point here. It is a thin pour, only 3.5" thick. Have to work with an old pad, so must assume it is cracked when designing fasteners. I'm limited a lot by this, but so far I have spec'd 1/2" drop in anchors, 4 per plate.

Hello, I'm working on the baseplate/anchor design of a sub-scale engine test stand. The test stand has three legs - it looks exactly like a teepee if you can imagine it - and the engine to be tested is mounted in the center of the "teepee", firing upward (obviously). I have attached a picture...

Thanks georgeverghese, I will keep digging into the kinetics of the problem and will continue to keep looking for test results from the ARSST method that I need to calculate the vent area.

The Kursk incident is the most prominent regarding use of HTP, but unfortunately there have been more. You're correct - it's potentially very dangerous - which is why I am looking to ensure that everything is done right. I found a resource which provides a calculation for the vent area, but it...

Hello, I am attempting to purchase ASME boiler plate stamped pressure vessels for use in testing operations that require HTP (high concentration test hydrogen peroxide, up to 98% w/o). All the sources I have found discuss vent relief sizing for large storage containers, but the sizes of these...

Hello, I am attempting to purchase ASME boiler plate stamped pressure vessels for use in testing operations that require HTP. All the sources I have found discuss vent relief sizing for large storage containers, but the sizes of these tanks fall in between that of a typical lab setup of ~ 1...