“…Parrondo et al created an expert system that attempted to detect the existence of six abnormal situations including flow rate greater than the best efficiency flow rate, lower flow rate, cavitation partially developed, cavitation fully developed, presence of an obstacle in the inlet conduit and rotational speed greater than or lower than the specified value. Although its classification of the pump's fault mode was correct on the lab tested setup, the effectiveness of adapting such a system to other industrial pumps was not attempted, (Parrondo, Velarde, & Santolaria, 1998). Similarly, Yang et al (Yang, Lim, & Tan, 2005) created an expert system for fault detection for centrifugal pumps which also incorporated decision trees.…”