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IRIS Certification: The 6 Most Common Audit Failures in Rail and Railway Organisations

IRIS certification failure in rail supply chain organisations concentrates in six areas that reflect the railway-specific requirements that go far beyond ISO 9001. RAMS analysis is the most significant gap for organisations entering the rail sector from other industries. This whitepaper analyses each failure and the preparation programme.

Published May 2026·Rail & Railways·IRIS ISO/TS 22163 Rail Quality Management

Why IRIS Certification Is More Demanding Than ISO 9001

IRIS — the Business Management System Standard for the Railway Sector (ISO/TS 22163) — extends ISO 9001 with rail-specific requirements covering project management, RAMS (Reliability, Availability, Maintainability, Safety), maintenance management and supply chain control. Organisations from non-rail sectors entering the rail supply chain consistently underestimate the depth of these additional requirements.

IRISInternational Railway Industry Standard — required by major rail primes including Alstom, Siemens Mobility, Hitachi Rail and CRRC for their supply chains
UNIFEUnion of the European Railway Industries — governs IRIS certification and the IRIS database
RAMSReliability, Availability, Maintainability and Safety — the engineering discipline required by IRIS that most non-rail suppliers have not previously implemented
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About AjaCertX
AjaCertX is a specialist compliance, certification and assurance partner serving the rail and railway sector. Our Rail Assurance practice delivers IRIS / ISO/TS 22163 certification support, OT cyber security programmes and business continuity planning for rolling stock manufacturers and rail suppliers.
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