AS 7486 Rolling Stock Onboard Electrical Energy Storage

The objective of this Standard is to provide national guidance for the safe and consistent use of onboard electrical energy storage systems (ESS) on rolling stock. This includes systems such as batteries and energy storage devices used for traction, braking and auxiliary power. The Standard sets out performance-based requirements for design, integration and lifecycle management, so that these systems operate safely and reliably. It also aims to align Australian practices with relevant international standards while considering local operating conditions. Overall, the purpose is to support effective, consistent and safe implementation of ESS across the Australian rail industry.

The latest review clarifies requirements and strengthens alignment with current industry practices, while having minimal impact on organisations. Key changes include improved consistency in how ESS is integrated across rolling stock and networks through common national guidance. The Standard now provides clearer definitions of system interfaces and requirements to support interoperability between vehicles, systems and infrastructure. It also strengthens alignment with international standards while addressing Australian operating conditions. In addition, lifecycle requirements for design, integration and management have been enhanced to improve safety, reliability and operational efficiency.

The Standard helps manage several significant risks associated with onboard energy storage systems. These include hazards such as thermal runaway, fire and explosion risks linked to battery systems. It also addresses electrical risks like electric shock, short circuits and other high-energy hazards. The Standard manages integration risks between ESS and vehicle systems, including electrical, mechanical and control interfaces. In addition, it considers environmental and operational risks that can affect system performance and reliability. By addressing these areas, the Standard supports safer design, operation and maintenance of ESS on rolling stock.

The Standard provides national guidance for onboard energy storage systems used on rolling stock, covering their use in traction, braking and auxiliary power. It establishes performance-based requirements for system design, integration and lifecycle management to ensure safe and effective operation. A key feature is its structured approach to managing hazards, risks and certification requirements associated with ESS. The Standard also supports harmonisation by aligning with international standards while adapting them to Australian conditions. This helps reduce variation and duplication. In addition, it promotes improved performance outcomes such as energy efficiency, reduced emissions and more reliable rail operations.

The Standard improves safety by setting clear, lifecycle-based requirements for identifying, assessing and controlling hazards associated with energy storage systems. This ensures that ESS are safely designed, integrated and operated throughout their life. It improves interoperability by defining clear system interfaces and requirements, allowing ESS to integrate consistently with rolling stock systems and operate across different rail networks. By providing consistent expectations and aligning with broader industry practices, the Standard supports more reliable system performance and safer operations across the rail network.

The Standard can be implemented by embedding its lifecycle and risk management requirements into existing organisational systems rather than creating separate processes. This includes integrating ESS requirements into the safety management system, as well as design, procurement, maintenance and change management processes. Organisations should define clear roles and responsibilities for personnel involved in ESS, ensure appropriate skills and training, and update systems to capture data and support compliance. A structured assessment process should be used to check design and operational arrangements. Ongoing audit, monitoring and continuous improvement are also important to maintain effective and compliant implementation.