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  1. 141109

    Use of non-metallic pipe for ASME B31.8 coded pipeline

    Having said that 842.1.2 formula is applicable for thermoplastic pipe and ASTM D2837 is not for GRE pipe. 842.2.3 indicates ASTM D2517.
  2. 141109

    Use of non-metallic pipe for ASME B31.8 coded pipeline

    Thanks for the reply Little Inch! much appreciated. There's a wide variety of non metallics nowadays and one or more types might be suitable. It could be a bonded flexible type pipe with thermoplastic liner / GRE outer or fully GRE. It may be a case of back checking the pipe design with the...
  3. 141109

    Use of non-metallic pipe for ASME B31.8 coded pipeline

    If non-metallic pipe is used for a buried pipeline as opposed to carbon steel does the location class design factor apply. If i'm in a class 1 div II area with 0.72 design factor how could this apply to the non-metallic pipe design? might it just be a factor on rating i.e. pipe pressure rating...
  4. 141109

    Flowline design ASME B31.8 or ASME B31.4?

    Interesting. Thanks for your response. 31.8 does say 'does not apply to... wellhead assemblies, including control valves, flow lines between wellhead and trap or separator, offshore platform production facility piping, or casing and tubing in gas or oil wells' but I took that as well head...
  5. 141109

    Flowline design ASME B31.8 or ASME B31.4?

    Our flowlines from the well head to processing plant contain well fluids which is a mixture of oil and gas though mostly oil. Can anyone advise if flowlines always need to be designed to ASME 31.8 to account for the gas content or if there is a fractional gas content cut off that allows use of...

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