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  1. nfinit

    Maintenance analyzis reports

    If possible, I would suggest utilizing some local resources who have experience and can guide you in the direction towards a successful implementation. Software like the AMS Machinery Manager from Emerson have the capabilities to do the requested information but the success is based on proper...
  2. nfinit

    Screw Compressor oil separator

    while I am certain many people on this site would be more than willing to help you verify work you have done, asking for the work to be done for you (no matter how politely) is usually met with a little contention. while it may seem sarcastic...I did a quick search using www.google.com and...
  3. nfinit

    Pump material class

    I would suggest asking your material team for their basis and justification before trying to find reasons why they may or may not be incorrect. Seems communication may be important.
  4. nfinit

    Application of BB4 ( API 610 ) pumps

    The BB4 model doesn't meet all the requirements of API 610, it can be a maintenance nightmare, and has more locations for leak points than a BB3 or BB5. I've seen them used in boiler feed water service, wwtp, etc. I would not want one of these types of pumps in a critical service. for the...
  5. nfinit

    Seal Plans Number & other permutations

    This may help with your understanding. http://www.mcnallyinstitute.com/18-html/18-8.html and to DubMac's defense, a single seal for Benzene service is a little suspect, if in fact they require 1CW-FX. Not knowing all the details leaves a lot for discussion, but it may be worth a request to...
  6. nfinit

    Derating of Pump Motors at Higher Altitude

    I've learned this lesson the hard way, and at only 6600ft. If you maintain your service factor, you derate the motor. So to that extent, I agree with BigInch.
  7. nfinit

    Pumping Crude From a LACT Unitto a Pipeline

    your lead times are generally 10-16 weeks right? how quick do you want them? I understand the quick and dirty up to the point where the LACT doesn't prove. So doing it right makes more money in the end. You likely know that already.
  8. nfinit

    Pumping Crude From a LACT Unitto a Pipeline

    I've avoided saying something here because I don't want to design a LACT for someone, especially with 350gpm and 850psig as the only statements. The discharge pressure seems high for lateral lines, or you have some impressive elevation changes. If it's a long distance pipeline you are going...
  9. nfinit

    Compressed Air Storage

    what is the cfm size of your 100hp? 440CFM doesn't seem like a very high required flow for a 100hp driver at the pressures you are suggesting. Are you using a desiccant air dryer? are the air compressor discharge pressures significantly different?
  10. nfinit

    Compressed Air Storage

    There are a lot of questions and variables. Is the system designed in a loop? Do you have volume bottles at any of the extreme distances or the high users? Do you know the pressure requirements and flows for all of the users? What are the individual discharge pressures of the compressors...
  11. nfinit

    Idler Shaft for Sundyne Pump LMV-311

    Have you tried contacting Sundyne? I have had great response when I have contacted them directly. Not so impressive through some of their distributors.
  12. nfinit

    Dry Gas seal Buffer Gas low dew point

    TPL - it's simply a statement from one of the major compressor OEMs. The actual design doesn't follow the recommendation to maintain a certain dew point.
  13. nfinit

    POSITIVE DISPLACEMENT PUMPS

    net inlet pressure required...
  14. nfinit

    Dry Gas seal Buffer Gas low dew point

    some manufacturers put a requirement in for a specific dew point in the buffer gas supply. The moisture in the buffer gas is intended to lubricate the seal faces. Great in theory, I have never seen it applied and would not recommend that it would be applied.
  15. nfinit

    Reading Pump Curve

    if you read the documents from BigInch, you may find some of your questions will be answered.
  16. nfinit

    Mechanical seal for Centrifugal pumps

    http://www.eng-tips.com/viewthread.cfm?qid=155007
  17. nfinit

    Help needed, Reciprocating compresso

    How was the equipment aligned? I would remove a couple valve cages or a cylinder head and inspect internally. Check for liquid. Check your rider bands and piston rings. What is the history of the equipment? What is the process? too much information needed.
  18. nfinit

    Recommendation required on the Seal Type & Flush Plan for Vaccum Bottom Pump service

    I would be a little concerned with an axially split pump in that temperature. I would suggest a Plan 54 and an upgrade to a radial split pump.
  19. nfinit

    LPG Pump for Low NPSH duty

    it is likely this is a bubble point fluid. You would want to check to see if they can raise the level in the vessel instead of the pressure.
  20. nfinit

    Pressure Testing w/ Nitrogen

    take out the minor oversight (which was easy enough to see and fix) and biginch's spreadsheet is the easiest way to accomplish your goal.

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