Dear All.

I am performing Stress Analysis of piping systems based on B-31.3. I have to do a blast analysis and my allowable is 1.5 Sy .Sy is Yield Stress of pipe material .

The piping system design temperature is 150 degree c
Can I directly consider the yield stress of material mentioned in B31.3 Appendix A or do I have to calcualte the Yield stress of the material at 150 deg c

Kindly advise

Thanks