Auxiliary process fluid piping

Auxiliary process fluid piping inclndes vent and drain lines, balance lines, product flushing lines, and lines for injection of external fluid. 

The factors fp and fj have not been applied to installation costs because installation costs are not a simple function of purchase cost. Although process piping and fittings made for the same unusual conditions are proportionally more expensive, labor, foundations, insulation, etc. are not. Furthermore, only about 70 percent of piping is directly exposed to process fluid. The balance is auxiliary or utility piping made of conventional materials. 

Related Calculations. Use these steps and the ASME Fluid Meters or comprehensive meter engineering tables giving similar data to select or check an orifice meter used in any type of steam pipe—main, auxiliary, process, industrial, marine, heating, or commercial—conveying wet, saturated, or superheated steam. 

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