DEVELOPMENT OF A DIRECTED CHOICE SYSTEM FOR THE REQUIRED QUALITY ACHIEVING TECHNOLOGY OF NPP PUMPING EQUIPMENT SURFACE PARTS DURING THEIR MANUFACTURING AND REPAIR

Abstract

The presented article notes the relevance of effective operation and maintenance of pumping equipment (PE) to ensure the safety and stability of nuclear power plants (NPP). This is important not only for maintaining the material condition of the plant, but also affects overall safety, as well as increasing operational efficiency and reducing operating costs. An analysis of existing works in this direction shows that the directed choice system of technology for achieving the required surface quality of pumping equipment parts at NPP includes all stages of their life cycle, starting from its design and ending with its utilization. At the same time, at each stage there are a number of special methods of directed choice that take into account a bunch of their necessary characteristics (reliability, cost, manufacturability, environmental safety, etc.). The aim of this work is to improve the quality of the manufacturing and repair process of NPP PE parts by synthesizing a rational variant of the their working surfaces forming technology. As a result, based on the theoretical studies conducted, a formalized model for generating rational options for NPP pump parts manufacturing technologies has been developed, which takes into account each stage of the product’s life cycle and allows for the formation a of rational solutions set, using various implementation methods or their combinations. A method for synthesizing options for technologies for achieving the required surface quality of NPP pump parts during their manufacture and repair has been developed, which takes into account the requirements for the reliability of the equipment and its environmental safety. A directed choice system of a rational option for selection the technology for manufacturing pump parts has also been developed, which allows for the required quality of working surfaces by the most economical methods.