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  1. fastphantom

    High Cycle Thermal Fatigue

    Thanks again Edstainless - surprisingly the cans show no difference - we are running on starts based maintenance - so based on starts the HGP and CI periods just come around quicker - we are not really seeing anything different here than we have before davefitz - OEM have offered a new and...
  2. fastphantom

    High Cycle Thermal Fatigue

    another photohttp://files.engineering.com/getfile.aspx?folder=ef779499-dae5-48e3-82e1-a06824de8477&file=DIFFUSER_GUSSET_AND_PLATE_CRACKING_NOV_2017.jpg
  3. fastphantom

    High Cycle Thermal Fatigue

    Wow, thanks for the quick replies. And I do appreciate all the information offered. Should have been a little more specific in my initial question and given the application - it may change some opinions. The application is the exhaust diffuser on a gas turbine. It is subject to enormous...
  4. fastphantom

    High Cycle Thermal Fatigue

    Hi I have an application that in normal operation would cycle from ambient to operating temperature - approx 450-500 deg C, and should sit at that temperature for a month or two, come off for maintenance and be turned back on. It could have between 10 and 20 thermal cycles per year. This under...
  5. fastphantom

    Plate Layout for Spherical Pressure Vessel

    Hi Can anyone help with the best (most efficient use of steel) plate layout for a 17m diam spherical pressure vessel. Thanks
  6. fastphantom

    Bottom Plate Thickness in Overturning Stability 5.11.2

    And to calculate wl - I read the standard (for SI units) to be: the lesser of 14.8HD or 59tb*sqrt(Fby*H). Is this right???
  7. fastphantom

    Bottom Plate Thickness in Overturning Stability 5.11.2

    Thanks for the replies JStephen - it makes sense to use the mass of the floor plate in the MF calculation but it is not clear in API650. It states "MF = moment about the shell to bottom joint from the liquid weight". I will very happily use the floor plate mass here. Is this what you are...
  8. fastphantom

    Bottom Plate Thickness in Overturning Stability 5.11.2

    In 5.11.2 does the thickness of the bottom plate effect the overturning. I am replacing a 40 year old tank. Due to process conditions the client has requested the tank be built form SAF2205, resulting in 5mm walls and a 6mm floor. The tank is 4.5m diam, overflow Height 6.6m with a cone roof. In...
  9. fastphantom

    AS 1692

    JOhn Thanks for taking the time to read thru As1692. I agree with your comments and have designed the 165m3 tank to AS1210. It ends up with an 8mm wall thickness which is comparable with the AS1692 selection for the Class4 150m3 tank. So I feel comfortable with that now. Once again thanks for...
  10. fastphantom

    AS 1692

    Hi I need to replace some existing Sodium Cyanide Tanks. The tanks were previously designed to AS1692 - however when reading that code it states it is only applicable for liquids whose density is not greater than 1000kg/m3 and the max volume for a horizontal tank is 150m3. Now the density of...
  11. fastphantom

    manage data without a database

    Thanks for the feedback brengine - i already have this application set up in excel, which performs a variety of calculations (the list is only a small part of the whole thing) Francis - The list will not have many items. I want to create a stand alone application that can run on a windows pc...
  12. fastphantom

    manage data without a database

    Hi I am trying to create a list that can be added to. Save the list, reveiw the list all with out using a database. Any clues. Thanks
  13. fastphantom

    API650 PLATE STRESS DUE TO ATTACHMENTS

    Trying to work out the stress in the shell due to an attachment - like a pipe support or platform, and then if a compensating plate is required. Can anyone help. Thanks.
  14. fastphantom

    FRP Pipe Butt Join

    Thanks Oceania Had a hard time getting copy of standard. Client supply of old pipe, manufacture has since gone out of business. Resolved issue by engaging local contractor who specified joint method, with subsequent hydro. Once again thanks for your information. Fastphantom
  15. fastphantom

    FRP Butt and Strap Weld

    Thanks jdarco. From a quick look NBS PS-1569 seems to be for duct work. I will chase pipe supplier for details.
  16. fastphantom

    FRP Pipe Butt Join

    CAn anyone help with a resource that specifies thickess (number of wraps) and width of an frp piping butt and strap join for different diam frp pipe. Thanks in advance
  17. fastphantom

    FRP Butt and Strap Weld

    CAn anyone help with a resource that specifies thickess (number of wraps) and width of an frp piping butt and strap join for different diam frp pipe. Thanks in advance.
  18. fastphantom

    pontoon overturning/stability

    Can anyone help with a calc for overturning or stability of a floating vessel (like a pontoon or barge)? Thanks
  19. fastphantom

    Static Mixer Cleaning/Replacement

    some late input if your interested. i have experience in 2 pack epoxy wrt kevlar carbon composites for boat hulls and have experienced cleaning problems on mixers also. A couple of ways to keep ontop of things:- You can design the system to have throw away liners where possible. eg A mylar...
  20. fastphantom

    ANSI Paint Colors

    Our company has been asked to supply equipment to be painted in color ANSI 24. Can anyone help in proving info on what color that is, or point me to a web site that lists colors, alternate colors. Thanks in advance. Regards Tony

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