IEC TR 62278-3:2010

Overview

IEC TR 62278-3:2010 is a technical report from the IEC that provides guidance on applying the RAM (reliability, availability, maintainability) requirements of IEC 62278 specifically to rolling stock. Intended for customers/operators and main suppliers, it covers RAM activities across the rolling stock life cycle from invitation to tender through to demonstration in operation. The report complements IEC 62278:2002 and is based on EN 50126-3, focusing on practical RAMS implementation and linking RAM performance to life‑cycle cost (LCC) considerations.

Key topics and requirements

• Life‑cycle approach: Guidance for RAM activities during procurement, design, testing and demonstration phases, emphasizing traceability across the life cycle.
• Preliminary RAM analysis: Methods to capture system breakdown structures (functional/physical), failure categories and initial RAM risk assessments.
• Reliability targets: Setting and documenting reliability requirements and prediction processes for components and functions.
• Maintainability targets: Qualitative and quantitative maintainability requirements, preventive and corrective maintenance planning, and logistics support needs.
• Availability targets: Defining availability figures and how availability links to operational performance and LCC.
• RAM programme: Templates and outline for a RAM programme, including configuration management, data requirements and example analysis sheets (reliability prediction, preventive/corrective maintenance, FMECA).
• RAM assurance: Activities and documentation required for tender, design and demonstration phases to prove RAM compliance.
• LCC integration: Identification of RAM parameters to be incorporated into Life Cycle Cost models to support economic decision‑making.

Practical applications and users

Who uses IEC TR 62278-3:2010:

• Railway operators and asset owners defining RAM requirements in tenders and contracts.
• Rolling stock manufacturers and main suppliers preparing RAM programmes, reliability predictions and maintenance plans.
• Systems engineers, RAMS engineers and maintenance planners applying FMECA, failure categorization and maintainability analysis.
• Procurement and project managers integrating RAM targets with LCC and contractual obligations.

Practical uses:

• Translating high‑level RAMS requirements into rolling stock specifications.
• Structuring RAM evidence for tender evaluation and demonstration in operation.
• Defining preventive/corrective maintenance regimes and logistics support requirements.
• Feeding RAM inputs into LCC models for total cost of ownership analysis.

Related standards

• IEC 62278:2002 (read in conjunction)
• EN 50126-3 (basis for this technical report)

Keywords: IEC TR 62278-3:2010, rolling stock RAM, RAMS, IEC 62278, reliability, availability, maintainability, life cycle, life cycle cost, FMECA, preventive maintenance.