I have seen specifications for pumps which state limits on the actual impeller diameter: no more than X% of the maximum diameter and no less than Y% of the minimum diameter. Has anyone seen specific values on these limits? What are they typically?
Today I made a ductwork model in Compress (vessel design software.) The model looks like a long vessel. I entered 0 internal pressure, 2.5 psig external, A240 material, and wind and seismic criteria and other data. The resulta gave me 0.1875" wall (7 gauge) and support spacing distance. I'm...
When a head and attached shell section of a Section VIII vessel is being replaced it would seem that new design calculations would not be necessary assuming the replacement is like-for-like to the original in all details, e.g., material, thickness, and location of nozzles. State is Illinois...
In SMACNA 005, "Round Industrial Duct Construction Standards" the Table of support spacing and stiffener requirements only goes as low as -30 inch WC. Does anyone know of tables going lower to -60 " WC, about -2.5 psi. Any suggestions as who I could contact for assistnace in developing criteria?
For a particulate laden gas stream in a polyethelene plant we are including a cyclone separator. What would be an appropriate design and fabrication code to invoke? It operates at a vacuum (-18 inch WC). Someone has suggested API-620 "Design and Construction of Large, Welded, Low-pressure...
