Eliciting software safety requirements in complex systems

We present a discussion of the issues involved with eliciting and managing safety requirements in complex systems. We show how safety case architectures present a modular view of a safety case which is consistent with the modular structure of a system of systems. These architectures can also be used to allocate responsibility for safety analysis across contractual boundaries. This paper discusses how these architectures can be used to address the technical and engineering management challenges associated with safety analysis in complex systems.