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  • Users: samoht
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  1. samoht

    Length of a rod cooled by free convection

    Let's say that a small a small cylindrical rod with no insulation is welded to a large insulated vessel with temperature x. What is the solution for finding the length of the rod based on a maximum allowed temperature y at the free end of the cylinder? I have decided not to consider radiation of...
  2. samoht

    Connecting duplex, monel and aluminum / bronze in seawater service

    A flanged Aluminium Bronze valve is connected to a Duplex (22%cr) vessel. Our client has specified the gasket material to be Monel. The media is Seawater. The SW temperature may vary from 15degC to 45degC. Is galvanic corrosion a concern with this configuration?
  3. samoht

    Code requirements for flange mounted equipment?

    Description An electrical heater are to be flange mounted on a U-stamped vessel. The vessel is delivered from the fabricator without the heater installed. Therefore the heater will not be included in the certification of the vessel. Questions 1.Does the Heater need to be U-stamped? 2.If ASME...
  4. samoht

    Flange mounted Equipment on ASME U stamped Vessels

    Description An electrical heater are to be flange mounted on a U-stamped vessel. The vessel is delivered from the fabricator without the heater installed. Therefore the heater will not be included in the certification of the vessel. Questions 1.Does the Heater need to be U-stamped? 2.If ASME...
  5. samoht

    Hot dip galv boltings - temp limits

    What is the max recommended design temperatur for Hot Dip Galvanized components (my concern is the surface treatment not the material)? The application is A193 B16 bolts hot dip galv. for corrosion protection.
  6. samoht

    Alternatives to 254 SMO

    The availability for Stainless Steel 254 SMO is poor. Are there alternatives with better availability. Thomas A
  7. samoht

    Chloride Stress Crack Corrosion

    A Heat Exchanger is used to pre-heat nitrogen with an oxygen content of 0.5%, from 20degrees Celcius to 140degrees Celcius (Design temp: 375degrees C). The gas has been mixed with seawater and then separated leaving the gas saturated with water and some seawater droplets. The pressure is 3 barg...
  8. samoht

    Longitudinal stress in a pipe

    Internal pressure in a pipe leads to longitudinal stress, how is that? Thomas

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