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  1. Idontknowit

    Overpressure caused by Fire

    JoeWong88, You probably right about BS standard,however I can not check it with eng.lead engineer since I changed my job. Thanks for your comments guys. Now I know I am on safe side of design. Idontknowit
  2. Idontknowit

    Overpressure caused by Fire

    Hi guys, Many thanks for your comments. I really needed some back up from experienced engineers like you to be sure. Idontknowit
  3. Idontknowit

    Overpressure caused by Fire

    Hi Guys I couple months ago I had some conversation with my lead engineer regarding the maximum relieving pressure for fire sizing. In my relief calcluations for fire case I used 21% of overpressure,which was crossed and replaced by 10% by my lead. So when I asked him why it was changed to...
  4. Idontknowit

    ASME Code and LPG vessels

    Garfio You should have look to ICG code. Good luck Idontknowit
  5. Idontknowit

    Evaluate carbon dioxide versus nitrogen as a purge gas

    Compositepro The level of the vacuum is going to be down to 0,001 bar as I mentioned above the level of the dry is supposed to be quite high. Idontknowit
  6. Idontknowit

    Evaluate carbon dioxide versus nitrogen as a purge gas

    Many thanks to all of you for your comments. Zdas04 I understand that it should be more information provided to get most of you,but some times I need a hint to give you more information.I will take your comments into account for my future postings and will give more details. The reason for...
  7. Idontknowit

    Evaluate carbon dioxide versus nitrogen as a purge gas

    It is very urgent! All efforts are appreciated. Do not hesistate to share knowledge :)
  8. Idontknowit

    Vacuum Purging

    Thanks 26362 I have looked at it.I was looking for more information like procedure(common/tipical)
  9. Idontknowit

    Vacuum Purging

    Hi guys, Any tip/reference/advice/procedure on common vacuum purging will be very appreciated. Thank you Idontknowit
  10. Idontknowit

    Evaluate carbon dioxide versus nitrogen as a purge gas

    Hi folks I need your advice in evaluating nitrogen against carbon dioxide as a purge gas. It is small test rig with dimensions 2x6 meters.The purging method is based on drawing vacuum. Also there is possibility of moisture in the system.Any tips how to eliminate this before or during the...
  11. Idontknowit

    How to decide flare header size

    Hi Texashomeless To size flare system you should look through API 521 first of all. API 537 is useful 'Flare details for refinery and petrochemical service' regarding relief rate: you shall consider all possible relief scenarios and then compare to choose the worst one. Good luck Idontknowit
  12. Idontknowit

    Recommended maximum vessel wall tempereature

    No probs http://www.eng-tips.com/viewthread.cfm?qid=205006&page=1
  13. Idontknowit

    Recommended maximum vessel wall tempereature

    I have found post where this topic has already been discussed. Idontknowit
  14. Idontknowit

    Recommended maximum vessel wall tempereature

    Hi I need to find out what is the recommended max.wall temperature of the vessel (material: Stainless steel AISI 304L) What is the criterias to determine it(time,type of fire,etc)? All comments are very much appreciated? Idontknowit
  15. Idontknowit

    sizing psv for expander

    Guys, I have request from the client to perform PSV for Expander which is simply piece of pipe larger diameter downstream of the high pressure vessel filled with gas. My question is should I make psv sizing calculation for this expander with size 1,5mm x 25mm as I have already sized the PSV...
  16. Idontknowit

    Why Three Hole Orifice Plate

    The reason behind this is simply to reduce the volume of the flow. This profile reduces the pressure drop of liquids flowing through the holes, provides better jetting of fluids. Kind Regards,
  17. Idontknowit

    Purge rate

    25362, Many thanks Idontknowit
  18. Idontknowit

    Purge rate

    25362, I need to calculate purge rate, not look for purge procedures. If book which you recommended only describes purge procedures,then it is not what I needed, Thanks
  19. Idontknowit

    Purge rate

    25362, Can you please send me some link to review chapter 7 of this book?
  20. Idontknowit

    Purge rate

    Hi Zdas04 2 reasons for purging: *Either the gas is to be replaced.(Flamable gas consisting from 80-90% of methane,5-10% CO2,2-5% N2) *depressurise and dismantle parts of the test rig It is clearing purge.

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