Scope and Compliance: Define clearly the purpose and functions of this skid system. Here you will define what chemical it is pumping, what would be the flow and pressure of that chemical. What is the function of the chemical in the overall process? How critical it is and if it requires redundancy and what is the duty cycle. Also briefly describe the environment where the system is located and where it will be injecting. Depending upon the application, industry and environment there will be a list of compliance requirements. Make a complete list of pump, environmental, structural and locational compliances.
Location / Structural & Power: Both the location of the facility and the location of the system within the facility are major factors that need to be surveyed. The structure on which the system will be mounted and structural requirements of the skid itself needs to be defined based upon the location and its vulnerabilities. The availability and feasibility of power which in most cases would be electric and in some cases would be solar or pneumatic would determine the motive system driving the injection pump.
Chemical and Performance Specifications: Choice of material of construction for the wetted parts and its corrosion resistance is not just a reliability issue but also a serious safety concern. The rate at which the chemical needs to be injected directly impacts the effectiveness of the process. The pressure at which the chemical needs to be delivered would dictate the strength of the pipes and power for the driver / motor for the pump.
Control System: This is the brains of the system. The control system turns the pumps or valves on and off depending upon the verification of the actual flow delivery. […]