Monday, August 17, 2015

Process Control vs Product Control

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The main objective in any production process is to control and maintain the quality of manufactured product so that it conforms to specified quality standards. In other words, we want to ensure that the proportion of defective items in the manufactured product is not too large.
This is called process control & is achieved through the technique of control charts pioneered by W.A. Shewhart.
By product control, we mean controlling the quality of the product by critical examination at strategic points and this is achieved through 'Sampling Inspection plans' pioneered by Dodge and Romig.
Product control aims at guaranteeing a certain quality level to the consumer regardless of what quality level is being maintained by the producer. In other words, it attempts to ensure that the product marketed by sale department does not maintain a large number of defective items

Difference between Product control & Process control.  

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