Seismic load
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I have been working on the design of plate-fin heat exchangers. Currently, I am designing a liquid nitrogen tank with a diameter of 588X10; the total height, including the upper and lower end caps, is 2281 mm. This liquid nitrogen tank is placed inside a cryogenic box and is supported in a suspended manner. In such a case, is it necessary to take seismic loads into consideration? If so, what standards should be used for the calculations (based on ASME)? Last edited by www557 on 2009-2-12 at 14:22
With this relatively low tower and the suspended supports, seismic loads should not need to be considered. To prevent accidents, the bolts connecting the supports must still be strong and reliable.
ASME UG‑22 (f) Wind loads, snow loads, and seismic loads shall be considered as necessary. The poster needs to figure out for themselves whether it is necessary to include this seismic load in their design requirements!
There is absolutely no need for it. Seismic loads (now referred to as seismic forces) are generally only taken into consideration when designing tower equipment.
Yours is less than 3 meters; even with a gravity acceleration of 0.15g, it doesn’t make much of a difference~
Your tank is relatively small, and seismic loads are short-term loads, so there’s no need to consider them at all. However, if you’re worried, you can combine seismic loads with other loads in order to verify the tank’s support structure
There’s no need; it’s not very tall and doesn’t have much mass, so there’s absolutely no need to consider seismic effects. Wind loads will also be low, and it’s likely that there are no relevant standards available for reference
Let’s calculate it; it’s actually not difficult. The seismic forces are in accordance with ASME requirements. The checking algorithm for the lugs is essentially the same as that in China.