The emergence of technogenic risks in the event of a heat exchange crisis in nuclear power plants

2nd International (15th Regional) Scientific Conference "Technogenic Systems and Environmental Risk"

工业技术（总论）;生态环境科学

Belousov, P.A.^1 ; Raspopov, D.A.^1 ; Stepanchenko, K.P.^1

National Research Nuclear University of MEPhI, Moscow Engineering Physics Institute, Obninsk Institute of Atomic Energy (IATE), Studenchesky Gorodok 1, Obninsk

249030, Russia^1

关键词: Acoustic diagnostics;    Acoustic oscillation;    Acoustic Sensors;    Data processing and analysis;    Diagnostic features;    Sound vibrations;    Thermophysical;    Wall temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/487/1/012004/pdf
DOI  :  10.1088/1757-899X/487/1/012004

来源: IOP

【 摘 要 】

In this article, the main problems and man-caused risks are considered in the event of a heat exchange crisis in nuclear power plants (NPP). A thermophysical booth simulating the operation of a nuclear reactor was developed. The data of acoustic diagnostics of the boiling of the coolant on the basis of the work of the laboratory stand were collected. Methods for processing and analyzing data collected from acoustic sensors have been developed. The recording and processing of signals was carried out using the application package and MATLAB programming language. The article describes the application of correlation and spectral analysis for data processing and analysis. The authors also use regression analysis to find the dependence of wall temperature on the frequency of acoustic oscillations. Forecasting the values of the wall temperature from the frequency of sound vibrations makes it possible in the future to find diagnostic features and build a mathematical model for detecting boiling and heat transfer crisis in nuclear power plants.