I have to fabricate pressure vessel made by SA516 Gr.70 (ASME section I,shell thickness is 140mm)with using 2 plates per 1 shell course. Our fabricator propose to weld 2 plate together and then rolling to the expected diameter. WPS/PQR require preheat and PWHT as per code requirement.
Our...
Is it acceptable if the sizing of pipeline size at pump suction less than pump suction nozzle size?My case is the designer selected to use suction pipe of 2 inch,but the pump suction nozzle is 3 inch.The pump is normal centrifugal type,suction size on the front and dischrage on the top.Please...