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Manufacturing QA and continuous improvement · Lesson 1 of 4

Manufacturing QA and continuous improvement: principles and terminology

QC, QA and a quality system; the seven ISO principles and the 2026 edition of ISO 9001; critical, major and minor nonconformance; first article; kaizen, jidoka and mistake proofing; and where AFS checks quality in its order system.

You will be able to: Tell quality control, quality assurance and a quality management system apart, classify a nonconformance by its consequence, name the continual-improvement vocabulary, and state the safety boundaries of inspection and quarantine.

11 min · 10 slides · 8 questions

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Slide 1 of 10

Checking parts, planning quality, running a system

Here, quality control (QC) means checking work against its requirements: measuring, inspecting, testing.

Quality assurance (QA) means the planning that makes conforming work likely, such as a spec's quality articles.

A quality management system (QMS) runs both, with records, reviews and improvement.

These are this course's working definitions, not quotations; ISO 9000 holds the formal vocabulary.

Glossary

Quality management system (QMS)
This course's working term for the way an organisation plans, checks and improves the quality of its work as one system. ISO 9001, titled "Quality management systems - Requirements", sets out what such a system must do.
Contract quality requirements
Under FAR 46.101, the technical quality requirements in a contract plus the clauses that prescribe inspection and other quality controls on the contractor.
Critical, major and minor nonconformance
FAR 46.101 classes of nonconformance by consequence: critical is likely to make the product unsafe (or to prevent a vital agency mission); major is likely to cause failure or materially reduce usability; minor has little bearing on effective use.
First article
Under FAR 2.101, a preproduction model, initial production sample, test sample, first lot, pilot lot or pilot models, tested for conformance before or early in production.
Jidoka
Toyota's "automation with a human touch": a machine stops itself when it detects an abnormality, or an operator stops the line, so defects are not passed on.
Mistake proofing (poka-yoke)
EPA: technology and procedures designed to prevent defects and equipment malfunction during manufacturing processes.
Kaizen
EPA: the incremental and continual improvement of production activities, aimed at reducing waste.