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  1. gunnarhole

    oxygen concentration brine versus fresh water

    caneng2002 The presence of salt does reduce the solubility of O2 in water. Check the following article from Petroleum Technology Quarterly, Spring 1998. "Oxygen solubility in various alkanolamine/water mixtures" (see Figure 5). http://www.gastreating.com/pdf/PTQ_Reprint.pdf (you may have to...
  2. gunnarhole

    integral fuel tank in skid?

    While not directly applicable to the original post you may want to consider the following from API RP14J Recommended Practice for Design and Hazards Analysis for Offshore Production Facilities 3.3.11 Drain Systems: Planning and construction of offshore production facilities should include...
  3. gunnarhole

    Single Phase Transformer Standards

    Can you tell me what IEEE Standards would apply to a oil-filled, single phase, pad mounted transformer with a 480 VAC Primary and 12,500 and 16,500 VAC Secondaries. Power rating of 200 – 500 kVA. The standards I find appear to be limited to lower voltage primaries. Regards
  4. gunnarhole

    Pump NPSH calculation spreadsheets or web sites

    Runasep, Perhaps you could consider putting a hyperlink to the following website into your spreadsheet. http://www.engineeringpage.com/calculators/pressure_drop/fittings_a.html Regards, Gunnar
  5. gunnarhole

    G-forces (Accelerations) from Collision of 2 Ships

    researchguru, per ISO 19902 Fixed Steel Offshore Structures / Appendix A.10.3 Vessel Collisions / A.10.3.2 Collision events The kinetic energy of a vessel may be calculated using the equation: E = 0.5 (a x m) v^2 Where: E = the kinetic energy of the vessel, MJ a = added mass factor...
  6. gunnarhole

    How Low Can You Go With SA-105 Flange?

    You may want to review the paper at mahbsrv.jrc.it/downloads-pdf/ASTM_A_105.pdf before you make any final decisions about using A105 at low temperatures. The Chemical Risks Directorate Federal Ministry of Employment and Labour in Brussels recommends that critical ASTM A105 pipe flanges, i.e...
  7. gunnarhole

    Offshore Survival equipments

    Google the International Life Saving Appliance (LSA) Code. Most of these rules come under the Juridiction of the International Convention for the Safety of Life at Sea (SOLAS), the International Maritime Organization and the United Nations.
  8. gunnarhole

    pipe chart

    You may want to try Brown Book Shop in Houston. They seem to have these sort of things when I visit. Regards, Gunnar
  9. gunnarhole

    software or tables of thermal properties for natural gas

    I use an Excel addin to calculate gas mixure properties. It cost ~$200 and it is based on the Lee Kessler Equation of State. You probably wouldn't want to design an LNG facility with it but it is very handy for doing routine calculations. You can get it from Moongate Software. Regards, Gunnar
  10. gunnarhole

    API 610 edition applicability

    afsiii, Actually API 610 is now in it's 10th edition. In the introduction the following text appears: "Users of this International Standard should be aware that further or differing requirements may be needed for individual applications. This International Standard is not intended to inhibit...
  11. gunnarhole

    FORMULA for grease relubrication interval

    Pete, Go to the following URL, http://www.lubriquip.com/pdf/20115.pdf to see the lubriquip/trabon approach to calculation lubricant consumption. Regards, Gunnar
  12. gunnarhole

    CAVITATION-RECIRCULATION

    Gentlemen, In I. Karassik's book, "Centrifugal Pump Clinic", he describes pumps which operate "in the break" or under "submergence control". These systems were designed and sucessfully relying on cavitation to limit the flowrate delivered by the pumps. He goes on...
  13. gunnarhole

    thrust or contact ball bearings

    Thread, I'm not sure who invented the dual contact angle concept but the firt I heard about it was at a TAMU Pump User Symposium when an engineer from MRC gave a presentation about their new Pumpac bearings. MRC have since been integrated into SKF but I am sure that they have enough...
  14. gunnarhole

    CAVITATION-RECIRCULATION

    Thread, This comment may be a liitle off the point but the repeated comments to the thermal nature of cavitation damage made me think of some recent articles I have read regarding single-bubble sonoluminescence. You may want to take a look at http://web.bham.ac.uk/mjb594/sbsl.html or do a...
  15. gunnarhole

    What is a centfigual screw pump?

    CTTP2003 You might also want to take a look at http://www.lawrencepumps.com/products.htm Regards, Gunnar
  16. gunnarhole

    air cooler equations

    ccorsi, Go to http://www.hudsonproducts.com/download.html They have free software that you can download that will size aerial/fin-fan coolers and fans. I have checked the results against HTRI and other proprietary packages and the results are surprisingly good. The U factor defaults are not...
  17. gunnarhole

    Flow through porous metal matrix

    tsurikov, I may be a little out of my depth here but it seems to me that the following must be true: The relative proportion of the the filter volume that is metal and that is "void" is the same regardless of the size of the bronze powder used in fabricating the matrix. That is if...
  18. gunnarhole

    I want to use API 5L Gr.B Seamless in place of ASTM A106 Gr.B

    Sabir, Merzi makes a good point. In a different application we have found that dual certified 316/316L flanges are useful in that they allow us to use the higher allowable ratings (per ASME B16.5) of the 316 and still get the low carbon content required by the welding process. Gunnar
  19. gunnarhole

    HELP does any one know a maker of grease volume meter

    ferreiro, Have you looked at the systems offered by Trabon and Lincoln? Regards, Gunnar
  20. gunnarhole

    Particular material appraisal

    Fawkes, As you say, perhaps I have misunderstood the intent of the PED. As an example, let's assume a horizontal API type separator, designed to handle an oil/water/gas mixture at 10 bar and 50 C. Let's also assume that the materials of construction are ASTM A105/106B/516-70. Let's also...

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