Relationship between corrosion margin and reference thickness calculated by SW6-2011
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What is the relationship between the corrosion margin and the reference thickness in the figure? 1: The reference thickness already includes a corrosion margin. (Wouldn’t that mean the thickness of the tank is only 2.5 then?) ) 2: Add a corrosion margin to the reference thickness. I hope the experts can provide some answers. Thank you.
A equipment calculation sheet is prepared, which contains detailed data.
The material is stainless steel, with a thickness of 2.2mm, which meets the minimum thickness requirement. The reference thickness of 4mm means that you should use sheets with a minimum thickness of 4mm for cutting; the nominal thickness indicated on the drawings is also 4mm
During calculation, if the wall thickness is not entered, the program will perform the calculation and provide a reference thickness. The reference thickness is rounded based on the calculated thickness, corrosion allowance, and the negative deviation of the steel plate thickness. During calculation, when the wall thickness is entered, the program will check it and provide a pass or fail result. The calculated thickness can be generated as a calculation report for review, or it can be calculated using the formula according to the relevant section 150.
The reference thickness means that, based on the input conditions, using this thickness as the nominal thickness will meet the strength requirements.