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Categories of Cost of Quality

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Submitted By layseeng
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A product that meets or exceeds its design specifications and is free of defects is said to have high quality of conformance. Preventing, detecting and dealing with defects cause costs that are called quality costs or costs of quality
Categories of Cost of Quality

Internal Failure Costs
The costs of deficiencies discovered before delivery. We associate deficiencies or nonconformities with the failure to meet explicit requirements or implicit needs of external or internal customers.
Internal failure costs come from deficiencies discovered before delivery. These include all the costs associated with the failure (nonconformities) to meet the needs of your external and internal customers. This failure cost is one of the 4 key components of quality costs.
Examples:
• Scrap: The labor, material, and (usually) overhead that created the defective product. The item cannot be economically repaired. The titles are numerous scrap, spoilage, defectives, etc.
• Rework: The cost to correct the defective material or errors in service products.
• Retest: The cost to retest products after rework or other revision.
• Changing processes: The cost of modifying the manufacturing or service processes to correct the deficiencies
External Failure Costs
External Failure Costs come from costs associated with defects that are found after the customer receives the product or service. These costs included lost opportunities for sales revenue. Lost sales revenue costs would disappear if there were no deficiencies.
Examples
• Warranty charges involved in replacing or making repairs to products that are still within the warranty period.
• Complaint from customers and the costs of investigation and adjustment of justified complaints from the defective product or installation.
• Returned material: The dollars associated with the receipt and replacement of defective product received

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