A nozzle having I.D. 400 mm is fabricated from S.S. 316 plate. It is attached by welding to a vessel having I.D. 1500 mm. Internal design pressure is 10 kgf/cm2 and design temperature is 300oC. Maximum allowable stress at design temperature is 612.4 kgf/cm2. Joint efficiency is 0.85 and corrosion allowance is 1.5 mm for both shell and nozzle. Density of material of fabrication is 7830 kg/m3. Calculate thickness and weight of reinforcement pad

5. A steel cylindrical air receiver with 5 feet diameter and pressure load of 180 psi, design stress of 9500 psi maximum. The pressure vessel is to be provided with a 1.5 in diameter drain valve installed at the bottom of the vessel and a safety pressure relief valve is installed either at the topmost or at the side with a pop-out rating of 200 psi. Assume a 100% weld joint efficiency. The lap welding tensile strength is 65,000 psi. Determine the bursting pressure of this air receiver. psi