The pipe will expand in all directions, not just length.
The change in thickness of the pipe doesn't need to be accounted for in SVIII D1 as the code uses maximum principle stress theory and bi axial stress, I would assume that these small changes in geometry are accounted for in equation...
I think UNF states that this material will require dye checking but you will need to specify to the vessel fabricator the extent of testing you require, i.e. hydro, dye checking, x-ray. Especially if it is fabricated in accordance with the code but not stamped. That statement really gives a...
I agree with SnTMan. Go with a thicker head or try to use a cone. I would limit reinforcement to the head OD and check the box that "nozzle or reinforcement is outside of spherical portion" of the head.
Ratings for individual components will need to be <= your design MDMT. Essentially you want all parts to be at or below your design MDMT.
Regarding how to lower you will need to review the code sections. It is a tricky subject which depends on many different factors.
How cold does your...
While the design accounts for the diffental pressure acting between the two chambers I do not believe it needs to be tested to the higher pressure. I would argue that you should test at 1.5 x design...not 1.5 x diff. The differental pressure only exists in a vacuum case and if you test at that...
Both of the materials you list can be welded to the pressure boundary but you need to have an MTR. I specify SA-36 flat bar all the time for vacuum rings and SA-516 Gr70 is an excellent PVQ steel. I use it all the time for pressure boundaries and lifting lugs. SA-36 is typically not used in...
In App 13-7 it states that he equations in these paragraphs, the moments and moments of interia are calculated on a per-unit-width basis. In your example you would negate the dimension 4 and work on this cross section. Use 13-4(f) to review the end plates.
Example 13-17(a) is just about spot...
I think you need to establish which direction you would like to run your pitch for reinforcement. If it was me, I would remove the end caps and focus on the "long" axis of your cube. The end caps can be considered seperately as braced stay or flat plate.
The use of App. 9 jacketed vessels is used if the shell continues inside the plenum. You can cut holes/openinings inside the plenum section as long as they are not across the circ. of the cylinder. Typically 3 holes of equal size to vapor inlet are used. If there is a break in the shell then...
