Quality costs

Quality costs were coined in reference to the minted in the 40s in the U.S. term Cost of Quality ( CoQ ). According to this concept Quality costs are composed of

  • Prevention costs ( prevention costs)
  • Testing costs ( appraisal costs) and the
  • Failure costs ( failure costs)

This concept is also reflected in the definitions of the German Institute for Standardization and the German Society for Quality ( DGQ ) resist, which meant by cost, "... the predominantly determined by the activities of the error prevention, through scheduled quality audits as well as internal or external error causes are. " In the language of (ISO 55350 )

A distinction is made in the quality-related costs between match and deviation costs. Compliance costs are known, predictable and unavoidable. Deviation costs are not known, can not be planned and only estimable (EN ISO 9004-1 ).

In their recommendations, the frame DGQ added to these costs, the cost of

  • Management of the quality system
  • Quality capability studies
  • Quality audits
  • Training
  • Inspection planning
  • Test equipment / monitoring ( eg, calibration of measuring instruments )
  • Vendor Evaluation

To the above costs.

Developments

Philip B. Crosby takes the concept of quality costs as a central element of his work in the field of quality assurance. He popularized the concept in a time when the quality of concepts and Deming Jurans dominated. The current distribution is based largely on Crosby's work.

Criticism

The examination assesses the costs only from the company point of view. Thus, according to the concept described only the cost of a quality loss or damage be relevant, must bear the producing, and selling businesses. Kicking for the person concerned, for example, the driver of a car with a flat tire or the crew and passengers of a sunken ship, other costs or consequences, so they are not included in the analysis. Some of these considerations can be found in the Product Lifecycle Management again. Others need to be considered from an ethical point of view.

Swell

  • Quality Management
  • Cost accounting
Joseph M. Juran Product-Lifecycle-Management
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