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  • Users: rhino27
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  1. rhino27

    Design Temperature Versus Maximum Operating Temperature which do you use for stress analysis?

    I am curious to read the input from others regarding the following issue. For years, I have used the design temperature in my pipe stress analysis models for calculating the wall thickness and for expansion stresses. In addition, I have had Notified Body's or third party reviewers check my...
  2. rhino27

    Caesar II A106B Concern/Question with B31.3 code

    I am just curious. From the notes in appendix A of b31.3 note 57 states "Conversion of carbides to graphite may occur after prolonged exposure to temperatures over 800 F." Why does Caesar II not give any type of warning or error if I am using A106B pipe with operating temperature at 900F?
  3. rhino27

    ASME B31.3 Appendix V

    I am currently trying to understand B31.3 Appendix V Allowable Variations in Elevated Temperature Service. I am hoping to gain some insight on the example given in this appendix. I understand everything until the point where the Stress due to sustained loads is calculated in accordance with...
  4. rhino27

    B31.3 Occasional Load Factor For Elevated Temperature Fluid Service

    I am trying to calculate what occasional load factor that I need to use for elevated temperature fluid service. B31.3 para 302.3.6 states that the occasional load factor as an alternative to using 1.33 times the basic allowable stress may be taken as the "strength reduction factor" multiplied...
  5. rhino27

    ASME B31.3 VERSUS B31.1 RELATED TO BEND THINNING ALLOWANCE

    I was hoping to gain some insight regarding the following issue. In that calculation of minimum wall thickness per b31.3, I know that you can use the formula in section 304.1.1 for a straight pipe. My confusion comes in when you calculate the wall thickness for example a 6D pipe bend. I see...

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