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  1. innovation2

    Water/Oxide Staining on Duplex 2205

    Hi, I am wondering if anyone has experienced staining on duplex 2205 HRAP coil? Take a look at the photo and let me know if this is typical of 2205. This is the second time we have run across this on coil product. Thanks
  2. innovation2

    Possible Code Case for N04400 Welded Pipe

    I have several heat exchangers that we are fabricating from N04400 materials. I am wondering if there is a code case availalbe for ASME Section VIII Div. 1 that would allow us to order welded pipe. Section II only lists the seamless. Thanks for your help.
  3. innovation2

    Welded construction of Tubesheet

    Would anyone be so kind as to enlighten me on the issues of creating a tubesheet of welded construction. I am working a bid for some equipment and I am having trouble finding a disk in the diameter required. I am afraid that the only viable option is to create the disk from 2-4 pieces of...
  4. innovation2

    Titanium Tubing Fatigue

    Has anyone ever had a problem with fatigue at a expanded double groove tube joint using titanium gr. 12. TS is fixed integral type constructed of Alloy 625. I know that titanium is susceptible to low ductility if over expanded.
  5. innovation2

    Welding After Hydro

    Quick question, is it permissible to weld insulation pins onto 2205 or 904L after hydro test on Section VIII Div. 1 equipment? What are the restrictions on types of welds, tig, mig, resistance, etc. The pins are 3.5" long and the equipment has a long trip to job site and may require us to put...
  6. innovation2

    B16.47 Flanges and the ASME Code

    I have a project that is requiring a 28" and a 36" 150# flange. I have determined that I will need a B16.47 Series A 150# flange since it incorporates MSS-SP44 specifications. I am trying to get the customer to use a slip on flange for the connections but as a worst case I will need to...
  7. innovation2

    Seismic Acceleration

    Does anyone know how to take values from a ASCE map and calculate the actual acceleration values to use in Nozzle Pro. Thanks
  8. innovation2

    Alloy 31

    Would anyone share a supplier for alloy 31? I have a customer that is asking for a large heater made of alloy 31 but I am having trouble finding a vendor. Thanks, Jason
  9. innovation2

    Calculating Skirt Access Reinforcement.

    I am wondering if anyone has an approach to calculate the reinforcement required for a 24" hole in a 5/8" skirt. The supports are designed to ASCE7-05.
  10. innovation2

    Plastic Elastic Tubesheet Calculation

    I am designing a tubesheet that is integral with the shell and channel and is constructed of 304 SS. The shell of the unit is 304 at 250 F and the channels are 304 at 250 F. When I input the information into my design software without an expansion joint, but using the plastic calculation I get...
  11. innovation2

    Breaks in vacuum rings

    I am wondering if it is acceptable to have a break in a vacuum ring. Our customer is asking that we put and internal ring in a plenum but it would run through the center of a nozzle. This is not standard practice by any means so I would like to get some insight from other professionals.
  12. innovation2

    FEA Tubesheet

    I am wondering what program is most used to perform a FEA on a fixed shell and tube tubesheet. My company is debating the idea of implementing some new software and I would like to get some trial versions to test. We design to ASME section VIII division 1.
  13. innovation2

    Heat Exchanger with Four Tubesheets

    I have a customer that is asking for a quote on a exchanger that has four tubesheets with rolled joints. It is almost like they are trying to put the 1st, 2nd and 3rd effect evaps into one unit then use a combination separator on the bottom. Material of construction is 304 both shell and tube...
  14. innovation2

    Jacketed Tank Supports Question????

    Hi everyone, I am designing a jacketed tank that is shown supported by a full ring on the jacket. My design software is not supporting this type of configuration and I am wondering if it is an acceptable design. I would prefer if it were supported on the main shell. The tank measures 72"OD...
  15. innovation2

    Nozzle Pro

    Anyone have any information regarding training for Nozzle Pro. I am looking a book to start out with, like "Nozzle Pro for Dummies" or something like that. Any help is appreciated. Thanks, Jason
  16. innovation2

    Center Feed Shell and Tube Exchanger

    How would you go about designing a tubesheet that has a center feed pipe coming through? The tubesheet would be 24"OD and a 12-3/4"od hole surrounded by (196) 3/4"od holes.
  17. innovation2

    Design of Jacketed Vessel with Helical Flights

    My question is whether helical flights used to direct flow in a conventional jacket can be used as vacuum rings to stiffen the inner shell? Referring to UG-29 it doesn't reference this type of design. I would like to use the inertia equations in UG-29 and the pitch of the flights as my (L)...

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