Pressure vessel manufacturing
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The bottom of the container (with a design pressure of 0.6 Mpa) is equipped with two connections. As the entire device consists of numerous containers and pipes, the space is limited; therefore, it is not convenient to install connections that lead straight downward for bolt attachment. When manufacturing the container, it was considered useful to add an elbow that leads to the outside of the support leg, thereby facilitating bolt installation, maintenance, and disassembly. Several standards were consulted, but no relevant provisions were found. I would like to ask if such an modification is acceptable, and whether any standard describes permission for this approach
Classmate*, learn about the equipment specifications.
The weakest part of a pipeline is likely to be the elbow, as factors such as fluid erosion, corrosion, and external stresses all concentrate at this location. So, it is best not to use elbows inside Flannelette; if they must be used, then special thickened, bent elbows should be employed. For reference.
Sure. As long as it does not affect the flow rate and pressure.
This is possible; most of the designs I created in the past were like this
Sure. If no elbows are used on the equipment, the piping team will still need to add them later; I usually require the equipment to have the bends built in directly.
Yeah, adding elbows does indeed make it easier to connect the bolts. With the accumulation of dirt inside the tank over time – such as waxy sludge carried by gases – the elbows are prone to getting clogged
A 45° bend would be much better;P
There are two considerations: first, the owner’s requirements – as long as the revised drawings are acceptable to the owner, that’s fine; second, the design calculations – as long as the calculations are correct, that’s sufficient. The regulations don’t cover every possible situation; for example, if you wake up at night because you need to urinate, there’s no need to check the regulations to find out whether it’s okay to go to the bathroom at night