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Recent content by jay165

  1. jay165

    316 SS pipe welding to carbon steel

    Even if you had water, there isn't enough of a potential difference between CS & SS to worry about galvanic corrosion. 316L is preferred over 316 with 316L welding rods. It is commonly done as MJC suggests.
  2. jay165

    Galvanic Corrosion potential on roof hatch of Crude Oil Tank...

    So it's submerged in crude???? I thought it was on the TOP of the tank.
  3. jay165

    Galvanic Corrosion potential on roof hatch of Crude Oil Tank...

    How can galvanic corrosion take place when there is no electrolyte present? Is the hatch and steel lid submerged in water?
  4. jay165

    A different steam tracing problem

    Why don't you use electric heat tracing instead?
  5. jay165

    Claded Sub Sea Pipeline (Sour gas carrying Pipe line)

    Since the cladding is on the inside of the pipe, there is no electrolyte present and hence, no possibilty of glavanic corrosion betwenn the classing and the ID of the steel pipe. As for the corrsion test on the outer pipe, the only thing I can think of is they want to know the exact electric...
  6. jay165

    Maintenance of deluge system ?

    Michelsen: 1. Why would you choose carbon steel for seawater service? 2. Why would the system be designed to deluge water on electrical equipment? Use potable or treated water to conduct the test or to flush the seawater out after the test. Protect the electrical equipment with shrouds or...
  7. jay165

    Tray Efficiency using Hysys

    What I've done is a trial and error approach. Adjust the tray efficiency to match your actual input/output conditions. When you get a match, you've got your answer.
  8. jay165

    greatest achievements in science and engineering

    My vote is the Manhattan Project with Gen. Leslie Groves as the greatest project engineer of all time.
  9. jay165

    Gas Separator Liquid Dump Orifice

    1969: MortenA is correct. I've also seen this situation on a blowdown line when the limiting factor is the flare capacity.
  10. jay165

    PSV orifice area

    farzinchemical: To expand on Art's point about complete information, one possible case you did not mention is gas blow-by from an upstream separator. Your vessel sounds like a LP or IP separator - do you have an HP separator upstream? If so, does the liquids from that separator go to the...
  11. jay165

    blowdown of pipeline

    bvi: Is there an equivalent "31.3 rule" in 31.8 or API RP1111 regarding low temperature excursions when the corresponding pressure is lower? I don't have a copy of either and I was curious.
  12. jay165

    Downhole Chemical Injection panel

    You'll get a much better audience for this question if you post under "Off-shore Structure/Pipeline Engineering" or "Petroleum Production Engineering"
  13. jay165

    Vibrating Nozzle

    You're kidding yourself if you think you can solve this problem by reading up on it. You need an experienced engineeer in pipe stress and finite element analysis. The dynamic effects you describe are particularly problematic. I urge you to get help on this otherwise the consequences could be...
  14. jay165

    Applicability of Codes and Standards to Piping

    What's the "NRC" and what do they use instead of 31.3?
  15. jay165

    Socket-O-Let Dimension

    mytsurfer: You posted a similar question on sockolets back in Sep 03. You even spelled sockolet correctly. You were given the nformation you asked for along with a useful URL. It took me about 3 seconds to find your original post. Can you not search the site or even remember your own question?
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