The development of safety critical software applications has always been done in accordance to strict methods. These systems require the application of verification techniques that guarantee safety properties. Often, they are complex systems that require the integration of different types of engineers such as safety engineers and software architects. Currently, different groups of engineers apply different analysis and modeling techniques (e.g. architectural description languages, and safety analysis models); these differences create inconsistencies between different types of model. In this paper we introduce some solutions to reduce these problems in some safety architectures. These solutions integrate developing modeling languages such as UML and specific safety analysis languages such as FTA and FMECA