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  1. altoid3000

    Vibrating Nozzle

    Any recommendations on some good consultants who can analyze this problem for us?
  2. altoid3000

    Vibrating Nozzle

    On a tower there is a 14" feed nozzle in the cone section. The pipe runs all the way down to the bottom. About 60 feet. Now, the flow is 2 phase and the pipe is going to be vibrating. What precautions do I need to take , what analyses do I need to make to properly secure the pipe to the vessel...
  3. altoid3000

    One/two point pick for tailing lugs

    Iteresting discussion very much relevant to something that I am working with at present. I dont have much experience so I can only ask questions. :) Can someone direct me to some reading about the different stresses involved during the lifting process. I guess when you lift the tower, one...
  4. altoid3000

    UNSYMMETRICAL SADDLES

    I agree that using FEM for every saddle design is not the right way to go, but my point is why have the industry standards not changed based FEM studies. Why is Zick method still the only thing available when it comes to saddle placement decision?
  5. altoid3000

    UNSYMMETRICAL SADDLES

    codeeng, where is the guideline of 0.2L ?
  6. altoid3000

    UNSYMMETRICAL SADDLES

    well, the vessel has a boot which is closer to right saddle, thus actually moving the right saddle by 1 foot as I said earlier, I think has evened the load out between the two saddles. Would you agree? The boot is about 4700 lb out of 27627 lb operating weight (new) for the vessel. Does compress...
  7. altoid3000

    UNSYMMETRICAL SADDLES

    I have a 15 foot long, 6 foot ID vessel. Initially the saddles were symmetrically placed at D/4 from right and left tangent lines. Latter due to nozzle interference issue, I moved right saddle in by 1 foot thus reducing saddle to saddle separation by 1 foot. The left saddle was not moved. Is...
  8. altoid3000

    WRC 107 figure 4A

    I am trying to read y axis value in Fig 4A in WRC 107. The numbers dont make any sense. What is the value for beta = 0.04, gamma = 84.5?
  9. altoid3000

    WRC 107 stress concentration

    WRC 107 talks about two stress concentration factors. Kn is membrane stress conc. factor (pure tension or compression) Kb is bending stress conc. factor But can some one tell me how and where to look them up?
  10. altoid3000

    RFID

    I guess you need a system which tracks without anyone's assistance. online signature system will need action on part of people. You cannot gaurantee that everyone is going to do what it takes for such system to work.
  11. altoid3000

    Locating Level nozzles on horizontal Drum.

    I have a horizontal drum with liquid inlet on the left end on the shell. Outlet with V breaker is on the right to the bottom. There are 2 level gauge nozzle on the shell, 2 level transmitter nozzles on the shells. Are there any guidelines for locating those nozzles? I guess they need to be on...
  12. altoid3000

    valve + actuator

    I was looking at a data sheet for valve + actuator for flow control. Pneumatic actuation. The data sheet specified Air consumption (6.7 cu inches etc. ) for different models. How is air consumption defined for this application? Is it the amount of air reqd. per actuation? At what pressure do I...
  13. altoid3000

    vacuum ring

    We are having some trouble placing vacuum ring on a tower. We are using ASME Section VIII Div 1. We looked in appendix 1-8C, 1-8E and found that the max distance of the centroid of the vacuum ring from the center of the seam weld is 0.84". Since it is RT-1 radiography, we got to radiograph the...
  14. altoid3000

    ASCE 7-2002

    I am using ASCE 7-2002 seismic code for design of a horizontal vessel. I am using DISASU software. Can someone tell me what the following parameters mean? Sds, I, R In the data book given to me, I need to use the following parameters. Ss=0.20, S1=0.08, I=1.25, Soil Type= +D. How do I translate...
  15. altoid3000

    RFID

    I work at an engineering firm. Lot of documents, drawings need to be reviewed internally. They go from one person to next and often it will be nice to track a package internally (Idea is similar to tracking a FEDEX package) But in my case the scope is small. The tags will need to communicate...
  16. altoid3000

    gas calcs

    I apologize for providing insufficient data. The tank stores grain - One of those huge grain elevator tanks. 114 foot dia X 75' tall. The gas is CO2. the tank is cylindrical upto 48 feet and then a conical top. There are 4 vents at the top at 90 from each other (each 2 feet X 2 feet). The wind...
  17. altoid3000

    gas calcs

    one gas source in the center of a huge cylindrical steel storage tank. this gas is heavier than air. I want to do some quick calculations to find out how much gas will leak out of the structure and how much of it will stay. There are going to be effects of wind entering the tank through vents at...
  18. altoid3000

    gas leakage

    There is one gas source in the center of a huge cylindrical steel storage tank. this gas is heavier than air. I want to do some quick calculations to find out how much gas will leak out of the structure and how much of it will stay. There are going to be effects of wind entering the tank through...
  19. altoid3000

    lifting lug

    Is there any ASME or PIP standard for lifting lug?
  20. altoid3000

    freezer efficiency

    Thanks a lot for all your suggestions. Has any one tried putting baffles in the freezer to increase air velocity in the critical freezing zones? I was thinking that it might an effective option. What are you thoughts on that? Has anyone tried putting baffles in the freezer to enhance the...

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