Dear Richard/Dave,

Could anyone please tell me what the differences between PD 5500 Annex G and WRC 107/297 Stress Calculation Method are?

I studied from some documents; it states that PD 5500 calculates stresses in vessel side. If we are calculating stresses in vessel side by WRC 107, again by using PD 5500 is required? If required why and what is the differences.

I searched in this Forum about this concept. But I didn’t get the complete information or guidance for knowing this concept.

Can you please clarify?