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Impingement Rods


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#1 IGC

IGC

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Posted 07 February 2020 - 05:28 AM

Short and a more general question. 

 

I have a TEMA type BEU shell and tube heat exchanger with NTIW baffles.  We require impingement protection on the shellside inlet and I am looking to find out how they are actually installed? 

 

Currently I am considering solid rods with a threaded end to attach to the tubesheet. The other end shall be tack welded to the first baffle, with the rod passing through and out the back of the baffle.  The span length of the impingement rods is not large (approx 12", shell OD of 16"), so I am not looking to install an additional support plate in front of the tubeheet. 

 

One of the few references I have found is API 660, and this states that impingement rods should not be supported by welding only if fixed to the tubesheet.  It is not an API 660 design, but struggling to see how else this could be done?


Edited by IGC, 10 February 2020 - 05:03 AM.





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