Discrete event simulation model of cargo port risk management

The necessity of using simulation technology as the main component of the concept of risk-based management of the main processes of a cargo port is described. A detailed block-by-block formalized description of the structure of the developed discrete-event simulation model, which is the basic element of multi-approach simulation, is given. Formalized in the form of sets that include various elements of the model, the structure allows you to get the most accurate representation of the relationship between the various components of a discrete-event simulation model, to trace the mutual influence of each element, as well as to get an overall picture of the implementation of various processes, including logistics, implemented within the framework of port activities. The following are identified as structural elements of the model: modules that allow tracing the logic of execution of all processes occurring in the port; agents of the discrete-event simulation model, which are objects of execution of the studied processes of the port; events of the simulation model, reflecting specific operations carried out in the port; resources with which these operations are implemented; variables and parameters of the model as auxiliary elements intended for carrying out the necessary calculations and linking the various components of the model, as well as indicators for evaluating port activity calculated using a discrete event model. Each of the above-mentioned elements is also presented in the form of a set, detailed and described in detail. The developed discrete-event simulation model made it possible to implement the concept of risk-oriented management of the main processes of a cargo port, formulated in this paper and including the need to calculate indicators for evaluating port activity in order to predict the occurrence of possible risk situations. An example of an experiment with this simulation model is given, and the technology of its further use is described to develop recommendations for avoiding (minimizing) the risks of a cargo port.