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  1. JesseJ

    Use of Standard Flanges (WNRF/SORF) instead of Girth Flanges for Shell & Tube Heat Exchanger:-

    You can still use ANSI flanges on both sides even if there are partitions. Purchasing ANSI flanges is cheaper than designing your own and machining your own flange. r6155... 50%, no way....considering shop rates for machine time etc.. it evens out around 18-20 NPS flanges. marty007, You...
  2. JesseJ

    knuckle radius of eliptical head

    Per Brighton Tru-Edge... Inside Knuckle Radius is Approximately 15% of the Diameter (See ASME Section VII, Division 1, UG-32 for clarification)
  3. JesseJ

    Use of Standard Flanges (WNRF/SORF) instead of Girth Flanges for Shell & Tube Heat Exchanger:-

    Good Morning, Yes you can use ANSI RF or WN flanges on TEMA R units. However, the gasket must be contained per TEMA R. So the gasket must have outer and inner metal reinforcement rings. This is out of TEMA 10th Ed. If you have any other questions let me know. I design Shell & Tube Heat...
  4. JesseJ

    Calculation for legs welded to a pipe cap

    Good Morning Everyone, I have been studying the Megyesy Handbook and forums on here on how to calculate legs such as the picture below. Please ignore the orange selection box. I am only using this image to represent the legs. I am not seeing how to calculate this scenario. I did make an...
  5. JesseJ

    Bundle Supports

    Thanks for the reply's guys, Yes we are talking about the rail system currently and have had the same thoughts. Our baffles are normally fixed tight with only the tubes growing etc with the thermal expansion through the baffles. So in a sense the railing would not effect that too much. 2...
  6. JesseJ

    Bundle Supports

    We notch the baffles and weld in the flat bar so there is enough hanging out to prevent the baffles from scraping. Some bundles go from 200# up to 9000# depending on the unit. So I understand that 1 system may not work across the board for all unit sizes. What have you seen for channel with...
  7. JesseJ

    Bundle Supports

    Good Afternoon Everyone, I have a question regarding bundle supports. Bundles are assembled with tie rods and spacers. Currently I use flat bar at 20 degrees from center on the bottom each side of the baffles as slide rails against the shell to keep the baffles from dragging for removable...
  8. JesseJ

    Heat Exchanger hydrotesting

    Thanks for the input guys. Our QC checked into it with the NB and they told us that what we need is the ASME/NB ID plate with only the shellside information and a second ID plate with only the tubeside information, but no ASME or NB stamp. We will then only hydro test the shell side and note...
  9. JesseJ

    Heat Exchanger hydrotesting

    Going by the UHX & Tema, it states that both the shell side & tube side shall be hydrotested seperately. I have a unit that the customer requested that the tube side not be rated as it has very low pressure. According to the code, can we just test the shell side and still be ok? We are...

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