Determination of reliability conditions of reversible water supply systems in thermal power engineering

Abstract

Today, the most important issues in the national economy of Ukraine are the issues of continuous, reliable and safe operation of reversible water supply systems, namely power units of thermal electric stations and heating plants of industrial enterprises. Trouble-free and reliable operation of water supply systems ensures the normal operation of social and household and industrial enterprises, as well as the safe operation of fire protection systems, which can be disrupted when the supply of a quality product to the consumer is stopped. For the purpose of research to determine the conditions of the reliability of reversible water supply systems in thermal power engineering, as well as the impact of risks in these systems on the reliability of reversible water supply systems, it is proposed to determine the states in which any water treatment system can be and the risks in water treatment systems that are technogenic in origin, and the consequences are ecological. The analysis of the obtained results showed that the states in which the water treatment system can be divided into three classes in accordance with the regulatory documents on the definition of technogenic risks in water treatment systems: class 1 (limit state) - the system works in normal mode, all blocks and elements work without failures and crashes; class 2 (critical state) - the system works in offline mode, some units or elements of the system work in partial failure mode; class 3 (dangerous state) - the system practically does not work and does not purify water, some blocks or elements of the system are in a state of failure. The risks that arise during the operation of water treatment systems and which can be used to assess their technogenic safety can be defined as: a) the probability of this system supplying raw water to the consumer as a result of the failure of blocks and elements of this system - state 3 - dangerous; b) the probability of this system supplying the consumer with poor-quality water as a result of partial failures and freelance work of units and elements of this system - state 2 - critical; c) the probability of this system supplying raw water to the consumer when the system is in state 1 - limiting, due to the natural inertia inherent in the specific physical and chemical processes on which the actual system operates.