Post Weld Heat Treat of Cat Cracker ReactorReactor Details Outside dia: 15’-8” Length: 45’-8” Thickness: 3-1/2” Weight: 280,000Lb Material: SA-387 G11 The outside vessel shell was first PWHT using gas fired heat without the internals at 1275F +/_ 25. It was then cut in two at the mid point. Internal cyclones, risers and other connecting pipe work were installed and locally PWHT at each welded joint. Finally the two vessel halves were welded together and a local PWHT successfully completed ready for final inspection.
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The above vessel was covered on the outside surface with ceramic fiber insulation and stress relieved at 1275+/-25F for 3hrs -30min using internally gas fired heating equipment. To monitor and control the heat cycle, thermocouples are attached to the outside shell and wired back to a strip chart recorder.  Vessel being loaded onto a special transportation trailer ready to be shipped to the client in the north east of USA |
About Us
On-Site Stress Relieving Services, LP. (OSR) is a specialty industrial heat treating company offering portable on-site services.
Our services extend, but are not restricted to: new construction and turnaround work in oil and gas processing facilities, refinery and petrochemical units, power generating plants, fabricating shops and off shore equipment.
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