EN 50126 / EN 50128 / EN 50129 - Railway Applications RAMS
EN 50126-1 clause 6: Management of railway RAMS – EN 50126 / EN 50128 / EN 50129 - Railway Applications RAMS

EN 50126 / EN 50128 / EN 50129 - Railway Applications RAMS 50126-1:6.5.2: Complex systems with different hierarchical levels

When defining the life cycle it is defined which subordinate systems it will include and, so far as is known, which higher-level system the requirements came from; where a phase at level N can affect the RAMS process at level N+1 or N-1 the relationships between the safety management processes are described or, if unknown, the assumptions identified and the constraints recorded as application conditions; RAMS assumptions on boundary interfaces are stated in the system definition, RAMS constraints on introduced interfaces defined in phase 5, and the process specifies how application conditions exported from subordinate systems and to superior systems and stakeholders are managed and communicated.

Maintained by Gerard Blokdyk

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