Several months ago, I bumped into a topic for allowing the use of a duplex in a section 1 application. I believe it was based on a code case, but cannot remember enough of the details to pin this down. I know it has not generally been allowed for some time, but I think there was a change in...
Trying to determine if the use of an expansion joint is acceptable based on configuration and ASME B31.1. It would be beneficial in reducing thermal expansion problems. I have parallel firetube paths feeding a steam drum. I would like to know if I can put the expansion joints on the inlet and...
Just a quick question regarding laser overlay welding. I have a request to perform laser overlay to some tubes that will be fabricated under Section 1 of ASME. The process is LBO (Laser Beam Weld Overlay) using a 622 alloy (Hast C22). This is my first exposure to this process when used in an...
