Valves, Pumps and Turbomachinery R. MISHRA, Indorama Eleme Petrochemicals and Fertilizers, Port Harcourt, Nigeria Be cautious with systems that are not foolproof Mechanical systems, especially rotary equipment, are designed to support easy maintenance jobs with less complexity and low chances of incorrect installation. However, due to design constraints, systems are not completely foolproof, so there are chances of errors during maintenance. These errors could be a result of a lackhttp://www.HydrocarbonProcessing.com