Nozzle Wall Thinning Evaluation
Nozzle Wall Thinning Evaluation
(OP)
Are there any thoughts about using ASME UG-45 (along with UG-27, -28, -37, -40) in the evaluation of a tmin for nozzle neck thickness? Or should UG-45 be left for the design and fabrication of a new vessel?
Thanks
jrley
Thanks
jrley





RE: Nozzle Wall Thinning Evaluation
prex
http://www.xcalcs.com
Online tools for structural design
RE: Nozzle Wall Thinning Evaluation
RE: Nozzle Wall Thinning Evaluation
Sounds like you have a vessel with standard wall nozzles and no corrosion allowance: "...the nozzle neck will have to at least be .875*Tnom." That would be unusual and not a happy place to be. From a fitness for service perspective, the nozzle can be thinner, but you need to be sure to evaluate all loads, including piping loads combined with internal pressure to ensure that the nozzle will be safe for continued service.
You might find API-579 Section 5 to be useful.
jt
RE: Nozzle Wall Thinning Evaluation
Check this site and the links---NACE
http://www.fitness4service.com