tubesheet design temperature tubesheet design temperature KarimElsaadany (Mechanical) (OP) 1 Feb 18 07:41 Hello Everyone, I've got a simple question, is the tubesheet in HP feedwater heaters subjected to superheated steam from the shell side? RE: tubesheet design temperature Dhurjati Sen (Materials) 3 Feb 18 14:37 No, the steam you get in the shell side is not superheated yet! DHURJATI SEN RE: tubesheet design temperature EdStainless (Materials) 3 Feb 18 16:23 Yes, the HP heaters have superheated steam on the shell side at the inlet. That is why the first section is called 'de-superheater'. In every one that I have seen they have added baffling so that the steam cannot directly impinge on either the tubes or the tubesheet. = = = = = = = = = = = = = = = = = = = = P.E. Metallurgy, Plymouth Tube RE: tubesheet design temperature georgeverghese (Chemical) 3 Feb 18 23:53 Obviously the tubesheet design temp must be the same as shellside design temp.. RE: tubesheet design temperature KarimElsaadany (Mechanical) (OP) 4 Feb 18 06:07 Yes I understand that there is a desuperheating zone, my question is whether the tubesheet should be designed based on the saturated temp. of steam or the superheat temp.