Risk acceptance criteria for complex technical systems

Abstract

The article provides theoretical generalization and detailing of risk analysis applied to the structures of complex technical systems based on its fast-evolving theory. Using previous studies, the author suggests choosing a metallurgical overhead crane as a facility related to such systems. The following three different risk analysis patterns are feasible during safety assessment and technical diagnostics: based on the operation life, based on the state and based on the damage resulting from making wrong managerial engineering decisions. Risk acceptance criteria applied to the complex technical systems under study are set based on stress strain behavior parameters including actual stresses and deformations along with mechanical property characteristics of materials. A decision on further operation of the structure or on ceasing the operation thereof is made when comparing safe acceptable and actual values of stresses and deformations. A table is created for such decision-making. The function of risk related to the damage resulting from making wrong managerial decisions is presented. Further development of such approach will allow identifying methodological recommendations for making decisions on future operation of complex technical systems in a more substantiated way.