FITNESS-FOR-SERVICE FORUM WITH GREG GARIC, PE

摘要

A well maintained pressure vessel can last a long time. Many vessels from the 1940s and 50s remain in service and I occasionally still run across pre-World War II vessels. This is a testament to the good work of our predecessors and the safety and value delivered by the ASME boiler and pressure vessel codes. But... it's also true that, generally, older steels and older welds just aren't as clean as they are today. Advancements in steel making practices and welding technology have greatly reduced non-metallic inclusions, porosity, slag, incomplete penetration and a host of other problems, which were much more pervasive in older steels. Even vessels from the 70s show a significant difference in quality compared to current vessels.