Thermostructral Analysis of Vertical Pressure Vesssel

Pressure vessel is the closed sealed cylinder shaped vessel for storage gaseous, liquid or solid products for the period of interval between production. Common welded junctions are found in vessel are the dished end to nozzle, shell to nozzle, and the skirt to the dished end. Skirt to dished end junction is very critical because it takes all dead weights and moment acting on the pressure vessel. There is two way to join the skirt to dished end either by centre to centre matching or outer diameter to outer diameter matching skirt to shell. During the cyclic heating or cooling there is a possibility of expansion of vessel wall which cause the crack at the skirt to dished end junction. Due to temperature, also temperature gradient will increase. And due to which high structural and thermal stress are develop at the junction of the skirt to dish end joint. So motive of this paper is to refer research paper on skirt to dished end finding different causes and the parameter on crack generation.