Thursday, September 15, 2011

[MW:12461] mixed feed convection coils




Dear experts,
In attached images you will find the failure happened on the junctions of header to heater tubes of a natural gas + steam heater. The heater specification is as follows:
Inside fluid: natural gas + steam
Outside fluid : flue gas from burning of natural gas in the reformer of an Ammonia plant.
Tube and header material : SA-312 TP 3047H
Considering the above let me have your suggestion regarding the failure reasoning.
 
Regards,
Karandish
  
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