Quality control, or QC for short, is a process by which
entities review the quality of all factors involved in production. ISO 9000 defines quality control as "A
part of quality management focused on fulfilling quality requirements".
This approach places an emphasis on three aspects:
1.
Elements such as controls, job management, defined and well
managed processes, performance and integrity criteria, and identification of
records
2.
Competence, such as knowledge, skills, experience, and
qualifications
3.
Soft elements, such as personnel, integrity, confidence, organizational culture, motivation, team spirit, and quality
relationships.
Controls include product inspection, where
every product is examined visually, and often using a stereo microscope for fine detail before the product is sold
into the external market. Inspectors will be provided with lists and
descriptions of unacceptable product
defects such as cracks or surface blemishes for example.
The quality of the outputs is at risk if any of these three
aspects is deficient in any way.
Quality control emphasizes testing of products to uncover defects and reporting to
management who make the decision to allow or deny product release, whereas quality assurance attempts to improve and stabilize
production (and associated processes) to avoid, or at least minimize, issues
which led to the defect(s) in the first place. For contract work, particularly
work awarded by government agencies, quality control issues are among the top
reasons for not renewing a contract.
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