Calculations help determine carbon steel piping in cold temperature relief service

Click here to enlarge imageGas processing facilities may have flare or vent systems that occasionally handle cold relief flows for short periods of time. Although nonimpact-tested carbon steel piping is not typically used for cold service applications, its use in the main flare headers of facilities with intermittent occasional cold relief flows was evaluated.Stress analysis of the flare header can be used to determine if nonimpact-tested carbon steel is a suitable material of construction. This article discusses the calculations required to evaluate the use of nonimpact-tested carbon steel piping in cold intermittent services per the ANSI B31.3 guidelines, prior to the 2000 B31.3 adden...

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