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PVElite calculation of flange acc. App. 2

PVElite calculation of flange acc. App. 2

PVElite calculation of flange acc. App. 2

(OP)
Has anyone observe that when insert a flange to the PVElite and at the point where you must fill "finished thickness" that the program uses this input once for calculating flange strength acc. App 2 ( as it was the thickness of the flange) and at the other for suggest that PWHT should be done or not for the flange, as "finished thickness"  means thickness of bevel of the flange ?
 As I know PWHT applies to the bevel thickness of the flange and not the thickness of the flange, or I make a mistake?. I observed above phenomenon at PVElite, at the design of HEX with the tubesheet gasketed on both sides with 2 flanges.


 

RE: PVElite calculation of flange acc. App. 2

pastyl, my company has PVElite, but I never use that part of it, I go straight to Codecalc.

Your understanding of the thickness for PWHT is correct, it does not surprise me that PVElite mis-handles this.

Codecalc does a bunch of stuff to calculate MDMT's but I don't trust it and in fact some is just plan wrong.

Enough for me if just does the basic calculations correctly, I'll do the rest...

Regards,

Mike

RE: PVElite calculation of flange acc. App. 2

pastyl,
Did you send a query to the PV Elite? Have you posted this question on the PV Elite discussion forum. I would suggest to check the procedure for nominating the finished thickness on the input data page;- it is fairly clear in the instructions/operating book and also on the Help line / F1 button on your keyboard.
Cheers,
gr2vessels

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