The wall thickness of the static equipment exceeds the standard
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Dear all**, there is a stationary equipment unit with a diameter of 1800 mm, a design pressure of 12 MPa, and a design temperature of -196 degrees Celsius; it is made of 316 stainless steel. Its calculated thickness is around 83, but the maximum thickness allowed per GB150 is only 80 mm, so it exceeds the standard. I would like to ask everyone the following: 1. Is it possible to use analytical design to calculate the wall thickness of this pressure vessel? By using such analysis, can the wall thickness be kept within 80 mm? 2. Analyze whether the design does not take in excessive allowances and safety factors; moreover, the safety factor used in the calculations for a wall thickness of 150 according to national standards is relatively conservative. 3. If the analytical design is feasible, could an analytical design for this container be prepared (including wall thickness and reinforcement for pipe openings)? If we approach relevant firms, what would the cost be? Thank you all!
Generally, SW6 is sufficient for calculation
It is recommended to use analytical design, which can significantly reduce thickness. For this material, thinning it allows for better control over product quality; for example, the end caps must be hot-formed, and the solution treatment after forming is easier to control the more thin the material is. Cold forming of the cylinder body also eliminates the need for solution treatment, and the properties of the material are less affected by thinning.
Generally, SW6 is sufficient for calculation