Hello,
Does anyone know the reasoning behind API653 11th ed 4.4.5.7 referring to the projection of the external chime outside of the shell-to-bottom weld being at least 3/8" ? It also says it must be at least 0.1" thick.
I'm asking since we have external corrosion on one tank leaving a chime...
Hello,
I had a simple question about the replacement of a nozzle flange face on a vertical storage tank that falls under API 650/653. According to 650, the nozzle assembly has to be thermally stress relieved because of its material grade, shell thickness, NPS...
My question: Is it...
Hello,
I was wondering if anyone out there knew where I could find good design rules / practises defining the proper radius at the point in a machined shaft where the diameter changes abruptly (such as at a bearing shoulder).
I know it is a function of the larger diameter, D, and the...
Hello,
I was wondering if anyone here has ever heard of a company that would manufacture chrome-magnesite crucibles (for lab tests). A colleague would like to simulate a pyrometallurgical process in the lab and wants to use this for the crucible material.
Thanks very much
D
Hello,
I was wondering if anyone could recommend a company that is capable of producing a new natural rubber that is specially formulated to meet the needs of my application. I know which physical properties I would like the "ideal" rubber to have but don't know if it's possible to work with a...
I had a question about the re-welding of electrolytic tough pitch (ETP) copper (99.90% Cu, 0.04% O). Currently, we use cast blocks of this with internal water for cooling material in our process. Over time, the blocks become worn and the copper is re-welded (build-up with Cu filler metal)...
Hello
I am looking for a submersible pump for service in 93% H2SO4 (NOT a vertical submerged pump i.e. Lewis pump). I am wanting to empty an acid thank that has 18.25 feet of acid with an SG of 1.84
If anyone has heard of a submersible pump for such service it would be greatly apreaciated.
D
I have a 3/4" diameter notched shear pin that I would like to test to determine it's shear strength. My mechanical engineering is a little rusty... could I conduct a simple tesile test on the pin and then convert it to shear strength or is there another test that can be done?
Thanks
D
