Dear Sirs,
i want to know how to calculate in steps and example, how to calculate manually the deviation of shell out of roundness when external pressure according to UG.80 is applied?
iam a QC engineer for fabrication company of pressure vessels. there is a new order for A deaerator construction and have the note at the photo attached . i want to know what is meant y 2 cycles required for production and total of 4 additional PWHT cycles and the role of several cycles of PWHT