Does anyone know when the ASME added the UG-45 requirement to the code? I am checking vessels built in 1969 using the pre 1999 addenda and all seem to fail the UG-45 requirement. Thanks
Registered: 12/06/01
Posts: 10
Loc: St. Louis, Mo. USA
Paragraph UG-45 first appeared in the Code in the 1952 Edition. Footnote 1 regarding minimum thickness of the nozzle neck first appeared in the 1959 Edition