摘要：Critical Infrastructures (CIs) are complex systems with a set of individual elements, such as buildings and facilities, technological equipment and energy supply networks, engineering, technology and other communications. The system criteria of Critical Infrastructures stability and their threshold are shown in the paper. The main criterion of CIs protection is engineering and functional stability. And the special criteria are the next: the criterion of work safety; the criterion of environmental safety; the criterion of energy safety; the criterion of resource safety (resource using in CIs); the criterion of CIs’ automation level; the criterion of technological equipment safety; the criterion of reliability of project design solution; the criterion of engineering systems reliability; the criterion of engineering safety; the criterion of explosion and fire safety. The algorithm for evaluation of Critical Infrastructures stability is formulated in this paper.
