http://www.thisistruth.org/index.php
Results 1 to 3 of 3

Thread: Sizing of relief valve for LPG bullet

  1. #1

    Join Date
    Jan 2013
    Posts
    7
    Thanks
    3
    Thanked 0 Times in 0 Posts

    Sizing of relief valve for LPG bullet

    Dear all,
    Please help me. I have an issue with basics.

    Problem follows:
    --------------------------------------
    Make a spreadsheet for the sizing of relief valve for commercial LPG bullet (mainly propane) using API 520. Temperature of atmosphere where the bullet is kept (above ground) varies from 10°C to 35°C (50°F to 95°F).
    -----------------------------------
    Which procedure in API 520 should I use?
    >procedure for liquid OR
    >the procedure for vapor-liquid?

    As u know, in API 520, different procedures are given for - critical, sub-critical flow, liquid relief, sizing for two phase liquid or vapor etc. So I am confused:-(
    The LPG bullet would be filled 85% of their water capacity, the remaining space being taken up with vapor (as I read from some websites).

    (I already made the spreadsheet for various conditions given in API 520. But I need to choose which procedure to use specifically for LPG bullet )

    If I haven't given enough info to solve the problem, please let me know.

  2. # ADS
    Spons Circuit advertisement
    Join Date
    Always
    Posts
    Many
     
  3. #2

    Join Date
    Feb 2009
    Posts
    22
    Thanks
    1
    Thanked 5 Times in 4 Posts

    Re: Sizing of relief valve for LPG bullet

    This depends on the overpressure scenario's you have identified and quantified, for fire you would use the vapour sizing equations but for overfilling you would use the 2-phase equations.

  4. The Following User Says Thank You to Nephilim For This Useful Post:

    chen4 (11-25-2013)

  5.    Sponsored Links



    -

  6. #3

    Join Date
    Feb 2009
    Posts
    283
    Thanks
    1
    Thanked 32 Times in 22 Posts

    Re: Sizing of relief valve for LPG bullet

    So, was this part of your job/work or you're doing it for school or for fun?

Similar Threads

  1. D.r.e.s.s.e.r. R/a/n/d Safety Relief Valve Sizing Software
    By azeezy in forum Engineering Spreadsheets & Presentations
    Replies: 129
    Last Post: 08-23-2013, 10:08 AM
  2. Standard for two phase relief valve sizing
    By fucheng in forum Safety And Environment
    Replies: 2
    Last Post: 05-29-2013, 10:24 AM
  3. D.r.e.s.s.e.r. R/a/n/d Safety Relief Valve Sizing Software
    By azeezy in forum Engineering Software Tutorial
    Replies: 121
    Last Post: 11-14-2011, 05:06 PM
  4. Relief Valve & Line Sizing Papers
    By MarrsieBoy in forum Engineering Programming
    Replies: 6
    Last Post: 11-07-2011, 03:23 AM
  5. Replies: 1
    Last Post: 07-03-2011, 08:38 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •