Water storage and distribution system for pharmaceuticals using PLC and SCADA

Abstract

Water is one of the major commodities used by the pharmaceutical industry. It may be present as an excipient or used for reconstitution of products during synthesis, during production of the finished product or as cleaning agent for rinsing vessels, equipment, primary packaging materials etc. Once water for pharmaceutical use has been obtained, it must be stored and distributed to the points of use; there is no point in producing quality water unless it is correctly stored and distributed. This stage is of vital importance to minimize possible contamination of the water and the proliferation of micro-organisms. Systems must be sealed with continuous recirculation and must have a sanitization system. In this work the first stage is to automate the water storage & distribution for various requirements and control the level in the storage tank and monitoring[2] the pH, conductivity, temperature before distribution which is very important as any small change in these parameters may hinder the performance of the whole pharmaceutical plant. The next stage of the work is to control the flow rate of the water in the distribution line and then water is given to the U-V Treatment to minimize contamination and micro-organisms. The water is then distributed for continuous recirculation. In this process the PLC of ALLEN BRADLEY MICROLOGIX 1200 make that comes with inbuilt 24 digital inputs which accepts 24V DC and provides 16 potential free outputs with 4 channel analogue input module is used to control the miniaturized process depicted in this project. RS logic 500 of professional addition 8.10 addition version software is used for programming the PLC and vijeo designer software for SCADA.