Requirements for safety-related hardware and for the overall system are defined in this standard.ĮN 50129 is concerned with the evidence to be presented for the acceptance of railway signalling electronic systems, including their safety functions and safety integrity level (SIL) thereof. For integrated design, implementation, commissioning, operation and maintenance safety-related systems, both hardware and software artefacts must be considered. The EN 50129 defines requirements for the acceptance and approval of safety-related electronic systems in the railway signalling field. A systematic process for specifying requirements for RAMS and demonstrating that these requirements are achieved is defined. The standard describes the lifecycle process for railway systems. The EN 50126 is used for the specification and demonstration of Reliability, Availability, Maintainability and Safety for all railway applications. Rail components are sourced from multiple suppliers and development lifecycles are becoming shorter with increasing international competitive pressure. Rail hardware and software systems are complex and bound by architectures featuring layers of subsystems, products and interfaces.
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Ship management, operations and ship design.Reliability, availability and maintainability (RAM).Electric grid performance and reliability.Offshore classification – fleet in service.
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