In this article, based on the forecast of the state dynamics of control systems with the use of cellular automata, we consider the obtained results that provide the theoretical basis for the development of a conceptual model of forming a reserve of fire monitoring tools. The article identifies analytical dependences of the assessment of the limit states of the monitoring system for solving the challenges of planning and organizing the proper fire monitoring in the event of protracted fires. A set of procedures has been developed for solving practical problems of evaluating the necessary number of monitoring tools to perform monitoring tasks in a quality manner. The possibility is envisaged of taking into account the changes occurring in the states of a control system due to the influence of its external environment, which is crucial in assessing the adequacy of modelling results.