Electromagnetic Compatibility
Engineered compatibility. Proven performance. Assured operation
The Problem
Electromagnetic interference sits at the intersection of multiple rail subsystems, including signalling, rolling stock, traction power, and radio. These systems both emit and absorb electromagnetic energy, making compatibility a whole system challenge rather than a component issue.
Disturbances reduce reliability and can undermine safety, particularly where signalling and train control are involved. Without disciplined engineering and clear evidence, projects face latent risk, delayed approvals, and operational instability once assets enter service.
Our Approach
Concept to certification, compatibility engineered
A structured compatibility strategy is developed from concept through to commissioning. Early stages define EMC requirements, interfaces, and acceptance criteria, including integration with legacy systems.
Compatibility is assessed through analysis, modelling, calculation, and targeted testing. Findings are translated into practical design rules, installation guidance, and mitigation measures suited to real rail environments.
Testing programmes combine laboratory and operational site activities, including pre compliance checks, site surveys, and system level measurements across EMC, EMI, RF, and EMF. Compliance pathways are embedded from the outset, ensuring alignment with international certification regimes and avoiding delays to entry into service.
Training, audits, and quality uplift strengthen internal capability, aligned to recognised frameworks such as ISO IEC 17025, enabling clients to maintain auditable, defensible evidence trails.
Our Customers
Railway OEMs and Sub Suppliers
Supports in strengthening EMC performance and compliance for international markets by translating complex electromagnetic requirements into clear, deliverable engineering solutions. This includes interpreting EMC standards and specifications, shaping compliant and competitive responses, and aligning designs with local regulatory frameworks. Support extends into systems engineering and integration, ensuring electromagnetic compatibility is managed at system level, interfaces are clearly defined, and coupling risks are understood early. The result is more credible bids, reduced integration risk, and smoother delivery through to certification and entry into service
Railway Operators and Maintainers
Railway operators and maintainers are supported in defining and implementing EMC strategies that are operationally robust, maintainable and aligned to long term network needs. This includes advising on specifications, upgrade strategies and supplier engagement, while ensuring electromagnetic compatibility across existing and new assets. Support extends into systems engineering and integration, ensuring interference risks are identified and controlled, system interfaces remain stable, and reliability is protected. This enables confident introduction of new technology and a smooth transition into service.
Railway Project Consortiums
Railway project consortiums are supported in establishing clear EMC and system integration frameworks that align multiple partners, disciplines and technologies into a coherent whole. This includes defining electromagnetic compatibility strategies, interface management, integration sequencing and assurance pathways, ensuring responsibilities are understood and interference risks are managed early. Support strengthens coordination across the consortium, reduces integration uncertainty, and ensures compatibility is maintained as systems are brought together. The result is more controlled, predictable delivery and reduced risk during testing and commissioning
The Afinta Difference
A whole system mindset integrates EMC with safety, assurance, and adjacent disciplines such as signalling migration and rolling stock integration. Early engagement focuses effort where risk sits, reducing rework and shortening approval cycles.
Delivery combines deep rail expertise with practical, site proven engineering and structured evidence.
Independence and integrity are embedded, ensuring advice remains objective and defensible, consistent with Afinta’s governance principles.
Clear, regulator ready outputs support timely approvals, reliable operations, and safer railways.
