For a cylindrical vessel of moderate height, the weld joint efficiency for joints parallel to the cylindrical axis is given as 1.0; while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylindrical vessel, what value of weld joint efficiency should be used ?

Question

Accepted Answer

0.8. For internal pressure in a cylindrical vessel, the stress calculation for the girth (circumference) joint is typically used. The efficiency given for the girth joint is 0.8.