Home Certification Schemes ISO/IEC 17020
Conformity Assessment ISO/IEC 17020 2012

Inspection Bodies

Requirements for the operation of various types of bodies performing inspection. Specifies requirements for the competence of inspection bodies and the consistency and impartiality of their inspection activities.

inspection conformity assessment engineering construction
About This Standard

ISO/IEC 17020 specifies requirements for the competence of inspection bodies performing inspection services across diverse sectors including engineering, construction, transport, insurance, and consumer goods. It defines three types of inspection bodies (Type A — fully independent; Type B — in-house with some independence; Type C — in-house) with differentiated impartiality requirements.

Inspection bodies verify that specific aspects of equipment, installations, processes, or materials conform to specified requirements. The standard ensures inspections are technically competent, consistent, and conducted with appropriate impartiality.

ACI-certified auditors assess inspection body management systems, evaluate inspector technical competence, and review the consistency and impartiality of inspection activities.

Examination Topic Areas
Inspection body type classification (A, B, C) and impartiality requirements
Technical competence requirements and qualifications for inspectors
Inspection methods, procedures, and technical documentation
Inspection equipment maintenance, calibration, and control
Inspection reporting, certification of inspection, and communication
Sub-contracting of inspection activities and outsourcing
Complaints, appeals, and handling of inspection disputes
Risk-based quality management in inspection body operations
Examination & Certification Process
01
Attend Training

Attend an ACI-Approved Training Provider (ATP) course for your chosen grade level. ACI-approved courses are aligned to the examination syllabus for ISO/IEC 17020.

02
Sit the Examination

Examinations are administered exclusively through ACI Approved Training Providers. Foundation and Internal Auditor examinations require 70% to pass; Lead Auditor requires 65%.

03
Apply for Certification

Submit your application through the ACI portal with your examination result, training certificate, and relevant audit experience log. Upon approval you receive your ACI Card ID and digital certificate.

Scheme Details
Standard ISO/IEC 17020
Edition 2012
Category Conformity Assessment
Cert. Period 3 years
Framework ISO/IEC 17024 Aligned
Available Grades PA · AA · AU · LA · PR · FACI
All Certification Schemes
Auditor Grades

Available Grades for ISO/IEC 17020

All six ACI auditor grades are available for this scheme. Each grade has defined competence, experience, and examination requirements.

PA
Provisional Auditor

Entry-level certification for those beginning their auditing career. Suitable for individuals who have completed foundation training but have limited audit experience.

Foundation examination pass (70%)
No prior audit experience required
Annual CPD requirement applies
AA
Associate Auditor

For auditors who have completed Internal Auditor training and have begun accumulating audit experience under supervision or in an internal audit role.

Internal Auditor examination pass
Minimum 2 internal audits conducted
Annual CPD requirement applies
AU
Auditor

Full auditor grade for practitioners with demonstrated audit experience. Recognised as a competent independent auditor of management systems.

Internal Auditor examination pass
Minimum 5 complete audits
Annual CPD requirement applies
LA
Lead Auditor

Senior grade for experienced auditors capable of leading audit teams and managing full audit programmes. The most widely recognised auditor grade internationally.

Lead Auditor examination pass (65%)
Lead Auditor training course
Minimum 10 complete audits as team lead
PR
Principal Auditor

Advanced grade for highly experienced auditors demonstrating sustained performance in complex audit environments and contributions to the auditing profession.

Lead Auditor grade prerequisite
Minimum 5 years audit experience
Professional development portfolio
FACI
Fellow of ACI

The highest ACI designation, awarded to individuals who have made an exceptional contribution to the management system auditing profession and to the ACI community.

By nomination and committee review
Exceptional professional contribution
Sustained ACI membership
Ready to certify in ISO/IEC 17020?

Find an Approved Training Provider, sit the examination, and submit your application to ACI.