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Recent content by tonycola

  1. tonycola

    Shell and Tube Heat Exchangers

    I believe that the subject paper is the original publication on the "stream analysis method". I want to review this original, and historic work. If you are interested in selling your copy, please let me know? Thanks for your help.
  2. tonycola

    Shell and Tube Heat Exchangers

    I am looking for a copy of the following paper - Palen, J.W. and J. Taborek, "Solution of shell side flow pressure drop and heat transfer by stream analysis method", Chem. Eng. Prog. Symp. Series 65, No. 92, 53-63, 1969. Can anyone help me?
  3. tonycola

    Single Gusset Support Lugs

    Compress provides calculations for support lugs with double gussets. Are there any plans to add the capability to analyse support lugs with single gussets?
  4. tonycola

    Sizing Tube-to-Tubesheet Welds

    I agree that the sizing calculations for full strength welds should include U-Tubes. The sizing formulas provided by the Code applies equally to U-Tubes. If the Compress user selects "full strength welds", then the sizing and calculations should be provided. Please correct me if I am wrong?
  5. tonycola

    API 650 tank guidelines.

    I recommend the following reference - Philip E. Myers, "ABOVEGROUND STORAGE TANKS", McGraww-Hill, 1997.
  6. tonycola

    FE analysis of steel connection

    I suggest that you look at ASME section VIII, division 2. This code uses stress intensity to define allowables. As you know this code is for pressure vessels and not for building structures. But, the allowable stress intensities which are tabulated ASME section II are applicable to the stress...
  7. tonycola

    Blowdown Flow (Choked flow help)

    I recommend the methods detailed in API-520-2000 part 1, paragraph D.2.2 Have fun!
  8. tonycola

    DESIGN FACTOR IN WRC 107

    Refer to ASME section VIII, division 2 appendix 4, Figure 4-130.1. The is an excellent guide and is generally applicable to design by analysis.
  9. tonycola

    Choke flow condition

    When gas or vapor is flowing through an orifice, a situation can exist when the flow rate would not be increased if the downstream pressure is decreased ( while the upstream pressure remains constant). When this happens, the flow rate through the orifice depends on the upstream pressure, but is...
  10. tonycola

    Piping Stress analysis & Flanged Joints

    I agree that if you use the method that calculates the equivalent pressure and then compares the result to the flange rating, this analysis is very or perhaps too conservative. A less conservative, but acceptable approach would be to calculate the equivalent pressure and then used this pressure...
  11. tonycola

    Tank Design - Vacuum Loads

    sme75, I have been using this formula for years and I am almost certain that I checked it out before I first used it (to calculate vacuum rating of tanks). But, since you ask the question, I went through the derivation again! If you are very careful with converting inches to feet and psi to psf...
  12. tonycola

    How to check the failure vacuum pressure of api tank

    The allowable vacuum pressure for an API 650 tank is 1 inch water, and it is 1 oz per square inch for API 620 tanks. If additional vacuum rating is desired, then calculation should be performed to verify that the structural integrity of the tank is sufficient for the desired vacuum. Generally...
  13. tonycola

    Tank Design - Vacuum Loads

    See Maan H. Jawad. James R. Farr,"Structural Analysis and Design of Process Equipment",2nd ed.,John Wiley & Sons, page 468. The formual given in this reference is the basis for the formula provided by API 650 for placement of stiffners on the tank shell. Therefore this is the formula...
  14. tonycola

    What is the minimal pressure to use a safety relief valve

    ASME Section VIII vessels (15 psig or greater design pressure): A relief device is required whenever there are credible scenarios that could cause the vessel pressure to exceed 110% of the design pressure. A relief device is required to protect the vessel during an external fire if an external...

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