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  1. InspectorWilly

    Operating Pressure for Vacuum Brazing Tube to Tubesheet joints

    Ed - Thanks for the info, I appreciate the reply. First - yes, we used machined holes or sockets, and the tubes are standard exchanger tubes, either seamed or seamless. Foil or groove - both is considered "pre-placed filler", correct? Temp is just the max - in case we want to braze Hastelloy...
  2. InspectorWilly

    Operating Pressure for Vacuum Brazing Tube to Tubesheet joints

    I'm currently looking into a process improvement so we can increase throughput on one of our product lines. This is as close to an off-the-shelf item as we have, most everything is custom engineered. We're looking at potential increase in orders of these and I've been tasked with determining...
  3. InspectorWilly

    Multi-Piece Conventional jacket joint efficiency

    We have a decent size (120"OD x 240" W-W, 1.25" thk Shell) unit which is having a 3-piece jacket installed per Appendix 9 in 3 sections: Bottom head to 1 can, then 2 additional cans on the shell only. All 3 shell cans have 1 long seam in them. The head will be provided 100%RT with PDR. The...
  4. InspectorWilly

    Material/Metals Cross Referencing software

    I have also heard good things about the CASTI books.
  5. InspectorWilly

    2205 Welding to Shell DEP

    Thanks Pradip, Your information has been helpful. Since welding 2205 to these requirements (Based in API Technical Bulletin 938-C) is new to us, we are having some issues. I will discuss your recommendations with the welders and see where that gets us. Thanks
  6. InspectorWilly

    2205 Welding to Shell DEP

    In case you are wondering, the customer spec only allows 1.0 - 1.2 T qualified per PQR
  7. InspectorWilly

    2205 Welding to Shell DEP

    weldtek, Thicknesses are: 3/16" 1/4" 5/16" 3/8" 3/32" root with 75 degree included angle
  8. InspectorWilly

    2205 Welding to Shell DEP

    All, I am trying to get some weld procedures for 2205 qualified to Shell DEP 30.10.60.18, and it is not going so well. We have the following parameters: GTAW Process with 98% Argon/2% Nitrogen. We are keeping heat input below 1.5 kJ/mm with the following variables: Voltage - 14-15 Amperage -...
  9. InspectorWilly

    2205 Welding to Shell DEP

    All, I am trying to get some weld procedures for 2205 qualified to Shell DEP 30.10.60.18, and it is not going so well. We have the following parameters: GTAW Process with 98% Argon/2% Nitrogen. We are keeping heat input below 1.5 kJ/mm with the following variables: Voltage - 14-15 Amperage...
  10. InspectorWilly

    Pressure Vessel Rerating

    fegenbush, I agree that the R-2 is cleaner, but more to the point, which jurisdiction does this fall under? NBIC, or ASME? -Willy
  11. InspectorWilly

    Pressure Vessel Rerating

    Got an ASME VIII D1/NBIC Question. So, my engineers forgot to send out updated mechanical calculations, or to update the hydro test pressure in the drawings. The equipment was fabricated per the new calcs (material thicknesses and such), but hydro tested to the old values, which was a much...

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