  The aim of this paper is to propose a rigorous and complete design framework
for complex system based on system engineering (SE) principles. The SE standard
EIA-632 is used to guide the approach. Within this framework, two aspects are
presented. The first one concerns the integration of safety requirements and
management in system engineering process. The objective is to help designers
and engineers in managing safety of complex systems. The second aspect concerns
model driven design through the definition of an information model. This model
is based on SysML (System Modeling Language) to address requirements definition
and their traceability towards the solution and the Verification and Validation
(V&V) elements.
