Basic provisions, requirements and initial data for the calculation of spare parts sets

Abstract

The ability to effectively ensure pre-specified level of reliability of the equipment, while maintaining expenditures at a minimum, is one of the foremost requirements and biggest challenges of our time. One of the key elements of the current research is to determine main characteristics of spare parts, e.g. types of spare parts sets, their respective composition, indicators of sufficiency of spare elements in spare parts sets, which allows to define the most effective and cost-saving methods of spare elements inventory management for spare parts sets. There have been analyzed some methods for developing the inventory depending on the purpose of the equipment, its maintenance and repair, as well as the requirements for the equipment reliability, including periodic and continuous stocking, periodic stocking with emergency deliveries and replenishment by level. To ensure high operational reliability of electronic equipment, maintenance and repair, extending the service life of the equipment, a support system is proposed, which includes diagnostic and repair tools, sets of spare parts, etc. In addition, the paper addresses the design of spare parts while taking into account the criteria of reliability of systems operation such as the level of sufficiency, composition and volume of spare parts, which should ensure the functioning of systems with necessary reliability indicators. The suggested methods for spare parts inventory planning and management are based on the most adequate models of reliability that, as a result, provide a significantly more accurate forecasting of the required amount of spare parts and, consequently, a more efficient equipment spare parts inventory planning. The research suggests the main requirements and necessary input data to guarantee the accuracy of such calculations.