Spare Parts Reserve Management in a Multi-Level Structure to Ensure the Reliability of Technical Systems

The processes occurring in production systems are limited by agrotechnical requirements. The determining factor of the technological reliability of the system is the time of replacement of the failed element. The reliability of the system depends significantly on the ratio between the time of replacement of the failed element with a workable spare part and the allowable downtime in the operation of the production system. A set of spare parts and accessories should be considered as a kind of unloaded reserve. (Research purpose) The research purpose is formalizing the dependencies between the performance indicators of the spare parts supply system and optimizing the flow of applications for spare parts, taking into account their quality. (Materials and methods) It was noted that in order to assess the quality of spare parts and accessories on a certain date, it is advisable to fix three parts of the purchased batch of spare parts. The task of assessing the reliability of spare parts and accessories at an early stage of their use was formulated. (Results and discussion) It was found that for a batch of spare parts and accessories of poor quality, it is possible to make prompt decisions on complaints to the manufacturer of spare parts and their replacement. (Conclusions) It was stated that the processes of spending spare parts are stochastic. It was established that a set of spare parts and accessories is a kind of resource designed to improve the reliability of the functioning of technical systems. The availability factor of spare parts and accessories was proposed, taking into account the intensity of their failures during storage. The general reliability model should take into account: the strategy of replenishment of spare parts, the type of structure of the supply system, the type of failure model. Proved that the strategy of continuous replenishment of spare parts and accessories is effective. It provides, other things being equal, a higher value of the availability factor of spare parts and accessories.