What’s the meaning of this in SW6 calculations?
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What does the red text mean? What does it represent? How to adjust the calculation
It won’t work; try using a wall thickness of 10 or 12 units. If that still doesn’t work, add reinforcement rings or reinforcement tubes
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This is the concept of stress classification. Thicker wall thickness is required, with 100% inspection of the welds.
In the analysis methods for opening reinforcement, SII and SIV serve as criteria for the reinforcement calculations; refer to GB/T150.3-2011 6.6.21. The owner’s reinforcement calculation did not pass, and it is necessary to strengthen the nozzles or the cylinder. Additionally, “Note the opening spacing…” is a reminder; it is also displayed when the calculation is successful. The spacing, yield ratio, and the subsequent information relate to the scope of application of this analysis method; for detailed details, refer to GB/T150.3-2011 6.6.1.
Through analytical calculation, it is clear that the relevant requirements specified in GB150.3-2011 are not met, and the results indicate failure.
The analysis shows that reinforcement is insufficient; increase the thickness of the cylinder or the connections! The analysis method requires a thickness ratio; calculations will not be performed if it exceeds the range specified in GB150! The pressure area method is not included in GB150. Use it as little as possible, use it with caution!
The equivalent film stress and overall stress values do not meet the requirements; in such cases, increasing the thickness of the nozzle or the shell and performing recalculation will suffice. The applicable range of the opening limits according to the GB150 analysis method is quite wide