Rail Quality Management Systems (ISO/TS 22163 / IRIS)
IRIS (ISO/TS 22163) is the railway sector quality management system standard, built on ISO 9001:2015 and extended with rail-specific requirements across the supply chain. The exam tests whether you understand the certification rules, the mandatory processes and how audit findings are graded.
Core rules
- ISO/TS 22163 adds requirements for project management, RAMS and LCC, obsolescence management, configuration management, supplier management, special processes and competence.
- Certification is against ISO 9001 and ISO/TS 22163 together; the IRIS scheme uses audit scoring, with knock-out questions that can stop certification regardless of the total score.
- The audit covers process maturity, not just document presence; evidence must show the process is applied and measured through KPIs.
- Special processes such as welding (EN 15085), NDT and bonding need qualified procedures and personnel, not just a work instruction.
- Certification runs for three years with surveillance audits; major nonconformities require containment, root-cause analysis and verification.
Worked example
A door-system supplier applies for IRIS. The auditor finds the RAMS process documented, but no project RAM plan exists and LCC is not used in bids; the KPI project milestone adherence is 68% with no improvement action. Reasoning: RAMS and LCC are mandatory IRIS processes; a document without application is a gap, and an unmanaged KPI is an effectiveness failure. The finding is major, so certification is not granted until corrective action and on-site verification confirm both the plan and the KPI action.
Traps
Believing an ISO 9001 certificate satisfies IRIS; treating IRIS as a product approval; ignoring knock-out questions while chasing the total score; forgetting that special-process suppliers must be controlled; letting the certificate lapse between projects.