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  1. picasa

    Compressed Air System

    I am looking for a calculation oriented book that guides the reader on how to select a compressed air system for an industrial plant. The book should have all the calculations presented in a step-by-step manner. Can you please recommend me a good book?
  2. picasa

    Trays

    NDE stands for non-destructive testing such as radiographic examination, ultrasonic testing, mag particle testing etc. these tests are common in vessel fabrication, but what about tray fabrication? I will try to post my Q in some other more applicable forum.
  3. picasa

    Trays

    What are the typical NDE testings done by tray fabricator before shipping off the tray unit to the job site?
  4. picasa

    studded pipe

    what is studded pipe used for?
  5. picasa

    heat insulated, cold insulated

    A pipe can be heat insulated, or cold insulated. What is the difference? Without the low thermal conductivity of insulating material, what else is going on?
  6. picasa

    Barge sizes

    Barges are used to ship large vessels. Are there any size specification (sq. feet) for barges? Or it is really upto the manufacturer? Where can I read details about the construction of these barges. Who makes them? Can you give me some examples of companies who make them?
  7. picasa

    nondestructive electric test

    The specification ASTM A 213 item 10 on page 6 talks about nondestructive electric test for heat exchanger tubes. What is this test for? Does it serve the same purpose as hydrostatic test? Where is it decribed? Is there any ASTM spec that details how to perform this test?
  8. picasa

    carbon equivalent number

    What exactly is the significance of carbon equivalent number calculated for a given steel from individual percentages such as MN, CR, MO, V, CU, NI etc. ?
  9. picasa

    liquid in pipeline (posted in PFM)

    This question was previously posted in BPV forum. I am trying this forum too. Sorry for the repeated post. How do you detect if a decomissioned pipeline has any liquid in it (remnant). You dont want to cut into the line. You got to use some kind of measurement technique to detect any liquid in...
  10. picasa

    liquid in pipeline (posted in BPV)

    How do you detect if a decomissioned pipeline has any liquid in it (remnant). You dont want to cut into the line. You got to use some kind of measurement technique to detect any liquid in the pipe if possible. Any ideas?
  11. picasa

    DIN

    A vessel fabricated in Germany and with most of the information on the drawing written in German language, has the following material info: " ... Material is 19Mn5 as per DIN 17155 with inspection certificate as per DIN 5004913C ..." The above could have typos since the drawing is very old...
  12. picasa

    freight

    in terms and conditions of a quotation from a vendor, I read ... "F.C.A. Point: Point of manufacture..." What is the full form of the acronym?
  13. picasa

    viscosity

    There has to be some published peer-reviewed sources which describe this conversion. I am looking for those sources. Do not mean to imply that these website are no good, but they can change in the future!
  14. picasa

    heat tracing

    Real life! We are really interested in solving this problem.
  15. picasa

    viscosity

    25362: For S values less than around 30 SSU, the value of Z calculated per your formula is -ve! Is that correct?
  16. picasa

    viscosity

    SSU is a unit of viscosity. I believe it is unit for kinematic viscosity (centistokes) and not dynamic viscosity (centiPoise). The relationship between centistokes and SSU is something like logarithmic or exponential - I dont know, but that is what I am trying to find! Where can I find an...
  17. picasa

    heat tracing - second post

    I posted the following in a different forum. Thought may be I could get better response here! For a simple finite element model for flow of slurry through a pipe, boundary conditions on the pipe wall need to be decided. The different cases are: 1. Heat traced pipe 2. Steam-jacketted pipe 3...
  18. picasa

    heat tracing

    For a simple finite element model for flow of slurry through a pipe, boundary conditions on the pipe wall need to be decided. The different cases are: 1. Heat traced pipe 2. Steam-jacketted pipe 3. Insulated pipe without any heat input 4. Bare pipe 5. Pipe with color applied to it. Typically...
  19. picasa

    Shell & Tube exchanger pressure rule

    Is there any requirement per TEMA code on the maximum difference or ratio between the shell side and tube side design pressure? Can the shell side pressure be very high as compared to the tube side pressure? and vice verca? What is the 2/3 rule? I heard of it, but could not find it in TEMA code...
  20. picasa

    stiffener rings

    A tall 304SS vertical tower is to be rated for Full vacuum external pressure. Stiffener rings are required per calculations. If stiffener rings are not allowed on the O.S., can they be put on the I.S.? If they are on the I.S., do they have to be continuous? Please refer to relevant sections...

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