Quality Control

The Definition Of Quality Control

• Control, is the activity of ensuring conformance to the requirements and taking corrective action when necessary to correct problems and maintain stable performance.
• Quality control, is a system of activities designed to assess the quality of product or service supplied to a customer. If a product does not conform to requirements, it is reworked, scrapped or downgraded. Quality control typically employs test inspection and repair techniques. Quality control is designed to answer the question: 'Have we done the job in accordance with the requirements?

  ISO 9000: 2000, Section 2.2.10 defines quality control as the "part of quality management focused on fulfilling quality requirements."

Quality control is the use of techniques and activities to achieve, sustain, and improve the quality of a product or service. It involves integrating the following related techniques and  activities: 

•  Specifications of what is needed? 
• Design of the product or service to meet the specifications 
• Production or installation to meet the full intent of the specifications 
• Inspection to determine conformance to specifications 
• Review of usage to provide information for the revision of specifications if needed. 

Importance of Quality control:

   The need for control arises because of the inherent variation in any system or process. Quality control is important for two reasons. First, quality control methods are the basis for effective daily management of processes. Second, longer-term improvements cannot be made to a process unless the process is first brought under control.

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