A Normal Fluid Service (or Category N Fluid Service) for the process piping design is covered by ASME Pipeline and Piping Standard 31.3 Process Piping, a fluid service pertaining to most piping covered by this Code except Category D, Category M or High Pressure Fluid definition rules. (Refer to the Fluid Service (ASME B31.3))

Related Definitions in the Project: The Piping and Pipeline Engineering