Validation is an integral part of quality assurance; it involves systematic study of systems, facilities and processes aimed at determining whether they perform their intended functions adequately and consistently as specified. Validation in itself does not improve processes but confirms that the processes have been properly developed and are under control. Adequate validation is beneficial to the manufacturer in many ways – It deepens the understanding of processes; decreases the risk of preventing problems, defect costs, regulatory non compliances and thus assures the smooth running of the process.
Process validation involves a series of activities taking place over the lifecycle of product and process. Validation requires a meticulous preparation and careful planning of the various steps in the process. All work involved should be carried out in a structured way according to formally authorized standardized working procedures.
Click here
http://www.askaboutvalidation.com/critical-parameters-affecting-process-validation/
to read the entire article