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  • Users: Fzob
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  1. Fzob

    Pipe measurements

    Try Krohne Meters.
  2. Fzob

    vacuum problems in stripping column

    Have you checked the steam eductor nozzles? Once they start to wear you can lose diff P and or overwelm a condenser. Also see if large amounts of inerts may be entering the column.
  3. Fzob

    What schedule pipe to weld in fittings?

    The minimum schedule used for threaded connections is 40.
  4. Fzob

    D/P cell

    I've seen this often in processes where the process fluid condenses inside the normal range of ambient temperatures.
  5. Fzob

    MOV(Motor operated Valve) SIL Certification .

    http://www.gmigasandflame.com/article_sil103.html Seem to answer your question
  6. Fzob

    Chemical reaction water ammonia

    You basically create a aqueoua ammonia solution that get stronger until the water is saturated. Any impurities in the water could be converted to something else, most likey a salt.
  7. Fzob

    Chemical reaction water ammonia

    Are you venting into the water or into the vapor space?
  8. Fzob

    Acceptable time for draining a tank

    The answer to that question lies with the resolving plant requirements. Just a few off the top of my head would include; How much flow can the effluent system manage? Why are you draining the tanks? What is the cost of downtime? What type of work are you planning for? Tank entry? other...
  9. Fzob

    Control Valve Tuning

    A simple test to narrow down your problems is to test the valve with a manual input. If you can't control in manual, then it may not be the tuning parameters. It may be the valve is sized wrong, or there on transient condition upstream (or downstream) not within the control envelope.
  10. Fzob

    Basis for level trips at 90%, why not 100%..(of working vol)

    I don't know how tightly run or well trained the operation is, but my experience is that 100% is not good practice. All it takes is one person to misunderstand that 100% means no material can ever be added above the set point and you will have a spill on your hands at some point in the future...
  11. Fzob

    Why Taper Bored flanges used on catalyst transfer lines?

    Does this help? http://www.woodcousa.com/about_wnf.htm
  12. Fzob

    Low amp draw

    Have you checked the flow meter? As pointed out the compressor meets demand. If for some reason the flow meter was off it could account for the difference you see in perfomance.
  13. Fzob

    What is a method for sizing a surge vessel for compressible fluids?

    Try this vendor. I have had good success using their products http://www.flexicraft.com/Hydropad_Accumulator/
  14. Fzob

    HAZOP Study

    Here is a pretty good overview of the HAZOP process http://www.ntnu.no/ross/srt/slides/hazop.pdf
  15. Fzob

    Double Wall Pipe- Pressure Vessel?

    The ASME BPVC code section VIII U-1 scope will provide the answer to your question. For such a high temperature application an option is to build to the code but not have it stamped. (assuming it does not need to be stamped)
  16. Fzob

    Double Wall Pipe- Pressure Vessel?

    One of the first things to consider is the size of the vessel. Below a specific volume and or dimensions the "vessel" is treated like a pipe.
  17. Fzob

    Fitnees for Service Assessment

    In addition to the excellent advice posted above to hire a firm with expertise in API 510 and 570 inspections, you should get the guidelines available for the Chlorine Institute. http://www.chlorineinstitute.org/index.cfm They will include a lot of good information about pipe and equipment...
  18. Fzob

    external egress ladders

    Check OSHA regulations and NFPA 101; Life Safety code
  19. Fzob

    Premature Failure of Rupture Disc

    A few things come to mind 1. Operating too close to the set pressure. 2. Pipe line pulsations 3. Corrosion. (even small amounts of corrosion can adversely affect a RD) 4. Improper burst tolerance range on disc. http://www.iceweb.com.au/Technical/rupture_disk_specification.htm When you say...
  20. Fzob

    Best Practices: gasket inspection / examination

    IS your goal actually leak detection? That's a bit of a different animal than gasket inspection.

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