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  1. NewENG102

    Pipe Stress and nozzle load based on thermal

    @Racookpe7978 & LittleInch thank you both for the detail explanation. I know thermal growth is taking in to consideration when a pipe line is designed - a expansion loop or a bellow joint may be used to absorb the movement and not cause any stress on the pump/nozzle. In my scenario lets...
  2. NewENG102

    Pipe Stress and nozzle load based on thermal

    @RVAmeche - Got it. I should have said anchor. So in this case both ends will see the half the force or move half the distance? (assume same physical properties for both ends).
  3. NewENG102

    Pipe Stress and nozzle load based on thermal

    @littleInch - I was also thinking shouldn't the two ends see half the movement / force. Would you say the ends will see half the movement / force? Thanks.
  4. NewENG102

    Pipe stress/loads from installation

    @RVAmeche Thank you for the information. I had a feeling best approach would be a stress analysis software.
  5. NewENG102

    Pipe stress/loads from installation

    @KoachCSR this is for an exercise- If you can point me in the right direction that would be great.
  6. NewENG102

    Pipe stress/loads from installation

    When a pipe line is installed to a pump flange there can be some due stress put on the pipe as wells the pump flange if there are misalignment in the pipe line. Can some expert here point me in the right direction on how I can come up with the load that will be put on the pump flange.
  7. NewENG102

    Pipe Stress and nozzle load based on thermal

    @TGS4 - assuming the same scenario but removing thermal out of the equation, during installation lets assume the pipe was bolted with 1/8" misalignment in the axial direction which causes stress on the pipe. Now, I dont think the same approach (cals) will work in determining the load at the...
  8. NewENG102

    Pipe Stress and nozzle load based on thermal

    @TGS4 lets assume its fix at other end- does this help?
  9. NewENG102

    Pipe Stress and nozzle load based on thermal

    Hi, I am working on calculating what the end load / nozzle load would be and I coming up with a really high number. Based on a 25' pipe and change in temp of 50F this would calculate to about 1/8" thermal growth. Below is how I came up with the end load. Would be great if someone can chime...
  10. NewENG102

    High strength bolt coating ASTM A490 & A354BD

    Great- Thank you both for your answers.
  11. NewENG102

    High strength bolt coating ASTM A490 & A354BD

    I know typically high strength bolts are not to be zinc galvanized due to hydrogen embitterment, what coating options can be used to prevent rusting due to weather? Typically these bolts are to be plain/black finish. Which means no coating, maybe a slight dip in oil. I have some of these...
  12. NewENG102

    Pipe axial expansion due to internal pressure

    Thank you both for your responding. @TGS4 - The "A" in the spring formula is the cross-sectional area of the pipe wall. The "E" is the modulus of elasticity (steel pipe). I was taking the approach Δ = PL/AE this is a relationship between load and deflection. where: P= thrust force ...
  13. NewENG102

    Pipe axial expansion due to internal pressure

    I would like to calculate the change in axial length in a pipe full of water when the pipe is pressurized. Could anybody provide the formulas or advise where I can find them? I assume this number would be very small in a 100' run of pipe. Ratio r/t>5 --- Longitudinal Stress = Pr/2t Thanks,
  14. NewENG102

    Flange Elastomer fabric Gasket Sealing Toque

    1) What does the gasket manufacturer recommend? I am trying to use the ASME Boiler code to determine the torque- This way I can always calculated it on my own. 2) What lubricant are you using on the bolts and nut-to-flange face? K = 0.2 3) What assembly technique (e.g. star-pattern...
  15. NewENG102

    Flange Elastomer fabric Gasket Sealing Toque

    Hi, I need some help calculating torque required to seal elastomer fabric flange. I am new to this and need some help. Pipe ID = 12" Pipe OD =19" Pipe BC=17" Bolt Hole = 1" dia 12 holes Bolt Dia =0.875" Retaining Ring ID = 10" Sealing Area = 518.25 in2 (Pipe OD Area - Ring ID Area)(excludes...

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