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Thanks for your reply Latexman. I have came accross that article, it's one of the reasons why I was looking for the whole text... No one seems to be offering the book online including ASME...

does anyone know where to get Orifice Meters With Supercritical Compressible Flow, R.G. Cunningham, Transactions of the ASME, July, 1951?

Thanks for your replies, I'll read through ASME TDP-1-2013 as per your advice stgrme.

indeed, didn't get anything other than basic stuff in the replies... was hoping someone with actual practical knowledge would have something interesting to say... by the way, can't imagine why you'd ever have a desuperheater upstream of a turbine...

i don't doubt there is need for the traps for start-up or shut down. what I wonder is if there is any condensation during normal operation. given the high degree of superheat in theory there shouldn't be any

Thanks for your answers. What I'm trying to understand is if there is any condensate expected during normal operation. Given the high degree of superheat both on inlet and outlet of the turbine my guess was that the purpose of the traps is only to drain at start-up. I was hoping someone would be...

Hi, can anyone explain what the purpose of steam traps is on a non-condensing turbine where the exhaust steam is still over 100'C superheated? would that be for start-up only?

Thanks for your advice moltenmetal Regards, Rafal

Thanks moltenmetal, so there is no rules in B31.3 or B31,1 against doing that?

Hi, I've got an application with a limited space. I wonder if it isn't against any design rules to weld the butt weld end of a stub-end of a lap joint fitting directly into a socket weld fitting (instead of normal butt weld to a pipe)? This is a 1'' size connection in 700psig steam service...

Hi guys, Could anyone direct me to the correct standard I should use to design a 1'' NPT stainless Y strainer (shell wall thickness) for steam service? From a quick look around it would appear that B16.34 would be the closest match, but would using B31.3 for example be an acceptable approach...