The object is to establish standard procedures for the conduct and reporting of performance tests of flue gas desulfurization systems. The performance of a flue gas desulfurization system (FGDS) is defined to be the characterization of inputs and outputs (see Fig 1.1). This may include, but is not necessarily limited to, the following: (a) percent SO removal (%R) (b) Reagent Ratio (RR1 or RRR) (c) energy/power consumption (d) water consumption and characterization (e) reagent consumption and characterization (f) waste/by product production and characterization (g) Available and Reliability. Availability and reliability of the FGDS are not within the scope of this Code.