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ISO STANDARDS · 7 AUGUST 2026 · 2 MIN READ

The ten clauses of ISO 9001, explained plainly

What each clause of ISO 9001:2015 actually asks for, and why the same ten headings run through 27001, 45001 and 14001.

ISO 9001 is written in ten clauses. The first three are scope, references and definitions: nothing to implement. Clauses 4 to 10 are the management system, and they share their structure (Annex SL) with ISO 27001, 45001 and 14001. Learn them once and you have the skeleton of every standard you will be asked for.

4. Context of the organisation

Who you are, who cares about what you do (interested parties), what their requirements are, and what is in scope. One page, honestly written, is worth more than ten pages of boilerplate.

5. Leadership

Top management owns the system. A quality policy, defined roles, and evidence that leadership actually reviews performance. The auditor will want to speak to a director, not just the quality manager.

6. Planning

Risks and opportunities, quality objectives that can be measured, and how changes are planned. This is where the risk register lives.

7. Support

Resources, competence, awareness, communication and documented information. Clause 7.5 is document control: versions, approval, availability, protection. It is the same clause in every standard, which is why one document-control module can serve four standards.

8. Operation

The doing. Planning and controlling processes, customer requirements, design, external providers, production and service, release, and handling nonconforming outputs. The longest clause and the one most specific to your business.

9. Performance evaluation

Monitoring and measurement, customer satisfaction, analysis, internal audit (9.2) and management review (9.3). These two records are the first things an auditor asks for.

10. Improvement

Nonconformity and corrective action (10.2), and continual improvement. The corrective-action log is the heartbeat of the system.

By ISO Assist. Tagged ISO-9001 · ANNEX-SL · QUALITY.

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