The paper presents a general Safety Case construction model, provides a description of its main blocks and their functionality. It also introduces the concepts of Safety Case Cores and Safety Case Infrastructure, which demonstrate a new approach to safety assessment and can serve as a basis for any complex system evaluation. The basic criteria for decomposition are outlined; general principles, implementation details and key features of Safety Case Cores are described and illustrated by an example of OTS-component assessment module. Key words: safety case, safety case core, safety case infrustructure.
