Rerate HX
Rerate HX
(OP)
An old Shell and tube HX built and designed per TEMA back in 1968 needs to be rerated for new temperature and pressure. Any guidelines on how to proceed will be really appreciated. Does TEMA have any guidelines on how to rerate an existing TEMA HX? I presume ASME Section VIII Div 1 UHX will have nothing to do with this problem since this is about rerating an HX and not a new HX.





RE: Rerate HX
The National Board Inspection Code will, more than likely, be your governing document. You would be well advised to check with your local jurisdiction.
Regards,
RLS
RE: Rerate HX
RE: Rerate HX
In most cases your own personnel can weld the new bracket in place with the AI (Authorized Inspector) witnessing it. Hydro and other tests required may depend on the AI.(Inspector can possibly be provided by the Vendor depending on local rules)