It is an RBI question. All the programs I've seen do not take into account the age of a vessel. In fact, it is intentionally omitted. An argument has been made saying that as I age, I go to the doctor more often. So why shouldn't the same be true of a pressure vessel?
All things being equal, such as service conditions, materials of construction and inspection data, would a pressure vessel that is 60 years old require more frequent inspections than a vessel that is 15 years old? Why?
