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  • Users: Mech 3D
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  1. Mech 3D

    API653 lap welded patch plate

    Hello engineering community, I have a solution slurry tank with old lap welded patches that were installed on the tank. After thickness checks again I have found that there is low thickness along the edge of the patch plate. I only have few days to complete the work as this tank is required...
  2. Mech 3D

    Acceptable tolerance for surface defects on pressure piping

    Hello Engineering Family, I have a 6 inch stainless steel SAF2205 which operates at 40bar and 220 degrees Celsius. During NDT inspection of the new pipe I found a surface crack , and I had to cut through a groove 2mm deep to check how far the crack is but beyond that the pipe is fine. Is this...
  3. Mech 3D

    Design

    Hello fellow engineers, I need your help to verify if I can drill new holes on around the same PCD for this flange since the old holes are corroded and cannot be rethreaded, the operating pressure is about 35bars and the actual flange is only 160mm thick , the holes are about 55mm deep. Any...
  4. Mech 3D

    Autoclave Level Control Valve Failure

    Hello Engineers, I need your input to understand the major reason for repetitive level control valve(LCV) failure, the LCV is mounted on the discharge end of the POX autoclave on top of the flash vessel. The recent failure was just within 2 months after installation and the ceramic plug...

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