Deutsch: Unterdrückung / Español: Supresión / Português: Supressão / Français: Suppression / Italiano: Soppressione /

In the context of quality management, suppression refers to the deliberate action of eliminating or reducing the occurrence of non-conformities, defects, or any unwanted elements that negatively impact the quality of products, services, or processes. Suppression involves identifying the root causes of quality issues and implementing corrective measures to prevent their recurrence. It is a proactive approach to quality control and assurance, aimed at maintaining high standards of quality and ensuring that products or services meet or exceed customer expectations.


Suppression in quality management encompasses a range of activities, including:

  • Root Cause Analysis (RCA): Identifying the underlying reasons for defects or non-conformities.
  • Corrective Actions: Implementing measures to correct identified issues and prevent them from happening again.
  • Process Improvement: Modifying processes to eliminate inefficiencies or potential sources of errors.

Application Areas

  • Manufacturing: In a manufacturing context, suppression might involve adjusting machinery, changing materials, or revising work instructions to eliminate a recurring defect.
  • Service Industry: For service providers, suppression could include training staff, modifying service delivery processes, or implementing new software tools to enhance service quality.
  • Software Development: In software development, suppression might involve debugging, revising code, or improving testing procedures to eliminate bugs or improve functionality.

Well-Known Examples

  • Implementing a quality management system (QMS) like ISO 9001, which requires organizations to take corrective actions to address non-conformities and prevent their recurrence.
  • Applying Six Sigma methodologies to reduce variability in manufacturing processes and suppress defects to achieve near-perfect quality levels.

Similar Terms or Synonyms

  • Elimination
  • Reduction
  • Mitigation


Suppression in quality management is a critical process aimed at identifying, reducing, or eliminating factors that contribute to non-conformities or defects in products, services, or processes. By focusing on root cause analysis and implementing effective corrective actions, organizations can improve their quality management practices, enhance customer satisfaction, and achieve operational excellence. Suppression is an integral part of continuous improvement strategies, ensuring that quality standards are not only met but consistently exceeded.


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