How CAESAR II calculates Radial Force AXIS Limit, Longitudinal Moment AXIS Limit, and Circumferential Moment AXIS Limit?

Is the AXIS Limit is calculated by the following method?

From Figure P-3A —Construction of Nomograms

(/ 2YF) (FR /FP)= (/aYL) (ML /FP) = 0.1 or [1.0 – 0.75 X A / (R t) 0.5], whichever is greater

(/ 2YF) (FR /FP)= (/aYL) (ML /FP) =0.1 or [1.0 – 0.75 X B / (R t) 0.5], whichever is greater

From Figure P-3B —Construction of Nomograms

(/ 2YF) (FR /FP) = (/aYC ) (MC /FP) = 0.1 or [1.0 – 0.75 X C / (R t ) 0.5 ], whichever is greater

How do we check weather the nozzles loads are within allowable limit or not?

Please refer to the attachement.

Yes the nozzle values are computed as described in your document. However, these values are the axis limits on the figures (the diamond and the triangle) in Appendix P.

To qualify your nozzle, you must draw these figures, appropriately labled, and then plot the loads from the CAESAR II restraint report. If the location of the plotted load is inside the figures, then the nozzle is acceptable according to API-650. If the location of the plotted load is outside either the figure, the nozzle is not acceptable.