Defining the nomenclature of the spare parts sets and calculating the number of single sets of spare parts

To ensure a high degree of operational reliability of electronic equipment, as well as mainte-nance, repair, and extending the service life of the equipment, there is proposed a support sys-tem that includes diagnostic and repair tools, sets of spare parts, and considered spare parts de-sign taking into account the criteria of system reliability, i.e. composition and the number of spare parts which must ensure the functioning of systems with the necessary reliability indica-tors. The paper offers to use methods of calculating spare parts on the basis of more adequate models of reliability, which leads to more accurate forecasting of the required amount of spare parts and, consequently, to more efficient equipment of spare parts. It also provides an approach to determine the nomenclature of spare parts sets based on more adequate failure models for calculating the number of spare parts. This leads to a more accurate forecast of the number of failures of the elements and the required number of spare parts and thus to a more efficient pro-vision of spare parts sets (optimal number of spare parts). There are directly considered the method of determining the nomenclature of spare parts sets and the approach to calculating the number of spare parts for the sets. A single set of spare parts is intended for routine servicing of the equipment by means of replacing defective parts, for preventive maintenance and adjust-ment of the equipment under operational conditions. A single set of spare parts is provided for one specific product. Such a set includes electronic products (integrated circuits, semiconductor devices, resistors, capacitors, etc.), electrical products, protection and switching tools, lighting products, etc., standard replacement elements, individual assemblies and blocks, including pur-chased devices, accessories (control devices) and materials necessary for the maintenance and repair of equipment.