UDC 621.371.391.2
MEASURING WATER TEMPERATURE BY PULSE REFLECTOMETRY METHOD IN PRIMARY LOOP OF NUCLEAR POWER PLANT
V. P. Koryachko, Dr. Sc. (Tech.), full professor, Head of the Department, RSREU, Ryazan, Russia;
orcid.org/0000-0003-0272-673X, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
S. S. Rumyancev, Head of the State Defense Defense Department, Morinsis-Agat-KIP JSC, Ryazan, Russia;
orcid.org/ 0009-0006-6102-3902, This email address is being protected from spambots. You need JavaScript enabled to view it.
L. V. Aronov, assistant professor, RSREU, Ryazan, Russia;
orcid.org/0000-0001-9010-3836, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
This article proposes a method for indirect measuring water temperature, based on the sensitive element of pulse reflectometric level meter, in primary circuit tanks of a nuclear power plant in the temperature range of 275...625K with pressure fluctuations in the range of 0.1-25MPa. A calibration curve of temperature was obtained based on averaging and approximation by a polynomial of the second degree of the results of experimental measurements with root-mean-square error of 1.35 %, while the relative error of temperature measurement by the proposed method is at least 3.95 %. An expression is derived to determine the resulting relative measurement error and recommendations for its reduction.
Key words: : reflectometric level gauge, pulsed reflectometer, mathematical model, nuclear power plant, computer model, temperature measurement.