What should be considered when designing a 15-cubic-foot buried diesel tank?
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Due to space constraints, the length, width, and height of the equipment are limited to 7 meters, 3 meters, and 2 meters respectively. The dimensions of the 15-cubic-meter buried horizontal oil tank specified in Atlas 02R111 exceed these limits (DN1800, length 6866, height 2385). This equipment is intended for storing diesel; it has a useful volume of 15 cubic meters and is required to be buried. The current design approach is to use a rectangular shape, but no relevant regulations or atlases have been found (buried tanks are usually of cylindrical design). What considerations should be taken into account when designing such buried horizontal diesel tanks? If it’s not reasonable, what are some other good alternatives?
It is mainly to conduct buoyancy resistance checks: G tank + G soil ≥ V_water * ρ_water * g * K (with K taken as 1.2). :)
Thank you! How is the external load on buried fuel tanks calculated? So, how should the thickness of the box be determined? Is it necessary to add reinforcement bars? The cabinet is made of Q245R material, and the dimensions of the equipment have now been further specified as: 5 meters in length, 2.5 meters in width, and 1.75 meters in height.
I’ve learned it; could the master explain in more detail the starting point for this consideration as well as other issues that need to be taken into account?
The following information can be used as a reference. Section 22.12, \"Design Calculations for Buried Horizontal Vessels\", of the \"Training Manual for Pressure Vessel Design Engineers\" states that \"compared to ordinary vessels, buried horizontal vessels must, in addition to withstanding the internal pressure of the medium and the weight of the material contained within them, also take into account the weight of the concrete layer beneath the ground, or the weight of any concrete surface layer placed on top of that concrete layer, as well as the possible effect of groundwater causing buoyancy on the vessel’s shell.\"
This post was last edited by haiy_zhu on 2016-3-10 at 10:47. Based on my current understanding, for buried equipment, it is necessary to consider not only resistance to floating but also verification of strength against external pressures. The 02R111 atlas calculates the tank based on an external pressure of 0.1 MPa; however, it is not clear how to determine the external pressure for the tank body. The SW6 calculation module for non-circular containers does not currently support calculations for negative pressures. I hope experts can provide some guidance!
Buried tanks should have external anti-corrosion protection of the enhanced or extra-enhanced grade. Although square boxes are easy to manufacture, they are not strong under stress; the calculated thickness of their walls should be greater than that of circular boxes, and reinforcement is also required. It is best to design it in a horizontal cylindrical shape.