ISO 9001 Clauses for Engineers

ISO 9001:2015 has ten clauses. Clauses 1–3 are scope and definitions; the requirements are in clauses 4–10. Every quality engineer should know which clause owns which activity.

Clauses 4–10 at a glance

Clause	Title	Key requirements
4	Context of the organization	Internal/external issues, interested parties, QMS scope
5	Leadership	Top management commitment, quality policy, roles and responsibilities
6	Planning	Risk and opportunity actions, quality objectives and plans
7	Support	Resources, competence, awareness, communication, documented information
8	Operation	Product/service realization, design, purchasing, production, release, control of nonconformances
9	Performance evaluation	Monitoring, measurement, analysis, internal audit, management review
10	Improvement	Nonconformance, corrective action, continual improvement

Most common audit nonconformances

Clause 8.5: production without valid job travelers or lacking change verification
Clause 10.2: corrective actions without verified root cause or effectiveness check
Clause 7.2: job descriptions not updated to reflect actual competency requirements
Clause 9.2: internal audit scope not covering all processes within the QMS boundary

CQE exam tips

Clause 8 is the largest and most tested — it covers the actual product/service creation activities.
Management review is in Clause 9, NOT Clause 5 (a common distractor).
ISO 9001:2015 introduced risk-based thinking (Clause 6.1) — previously this was part of preventive action.

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