PREDICTIVE DIAGNOSTICS OF CONTROL SENSORS IN A NUCLEAR REACTOR
https://doi.org/10.26583/vestnik.2023.243
Abstract
In this paper, we propose an approach for the pinpoint detection of inoperable sensors based on the analysis of diagnostic parameters. Such parameters can be the "sliding correlation" coefficients, the fourth eigenvalue and the relative deviation of the reconstructed sensor reading. With the help of the above diagnostic parameters, it is possible to immediately determine the fuel assembly in which one of the DPZ is presumably out of order, then analyze the level correlations between each other and, using the restored value, make a final judgment on the performance of each altitude sensor.
The developed software makes it possible to carry out an express analysis of the archive of the VVER reactor. This has scientific and practical value in the context of improving the quality of work of operational personnel and analyzing situations that require additional attention and more detailed analysis. The application of this approach can help detect malfunctions in sensors and take timely measures to prevent possible problems and emergencies, which is an important step in ensuring the safety and efficiency of the VVER reactor monitoring and control system.
About the Authors
S. V. Ten
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute
Russian Federation
Russian Federation
A. M. Zagrebayev
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute
Russian Federation
Russian Federation
References
1. Zagrebaev A.M., Nasonova V.A., Ovsyannikova N.V. Matematicheskoe modelirovanie yadernogo reaktora pri sluchajnyh vozmushcheniyah tekhnologicheskih par-ametrov [Mathematical modeling of a nuclear reactor with random perturbations of technological parameters]. M.: NIYAU MIFI Publ., 2011.
2. Zagrebaev A.M., Ovsyannikova N.V., Rama-zanov R.N., Mil'to N.V. Vosstanovlenie utrachennogo pokazaniya vysotnogo datchika kontrolya za polem nejtronov po dannym arhiva [Restoration of the Lost Readings of the Altitude Neutron Field Monitoring Sensor Based on Archive Data]. Atomnaya energiya, 2015. Vol. 118. No. 3. Pp. 129–133 (in Russian).
3. Alyev P.P., Leskin S.T. Metod analiza rabotosposobnosti izmeritel'noj sistemy i programmnogo obespecheniya vnutrireaktornogo kontrolya VVER-1000 [Method for analyzing the performance of the measuring system and software for in-reactor monitoring of VVER-1000]. Izvestiya vysshih uchebnyh zavedenij. Yadernaya energetika, 2008. No. 3. Pp. 4–12 (in Russian).
4. Saunin YU.V., Dobrotvorskij A.N., Semenihin A.V., Musihin A.M. [Construction of a system for diagnosing the state of information-measuring channels of the SVRK NPP with VVER in real time]. Devyataya mezhdunarod-naya nauchno-tekhnicheskaya konferenciya «Bezopas-nost', ekonomika i effektivnost' atomnoj energetiki». Te-zisy dokladov. Moskva. Koncern «Rosenergoatom» [Ninth International Scientific and Technical Conference «Safety, Economics and Efficiency of Nuclear Power». Abstracts of reports. Moscow. Concern «Rosen-ergoatom»], 2014. Pp. 90 (in Russian).
5. Zagrebaev A.M., Ramazanov R.N. Vizualizaciya arhiva parametrov yadernogo energobloka s reaktorom RBMK [Visualization of the parameters archive of a nu-clear power unit with an RBMK reactor]. Nauchnaya vi-zualizaciya, 2015. Vol. 7. No. 2. Pp. 1–11 (in Russian).
6. Zagrebaev A.M., Ovsyannikova N.V. Avtomatiziro-van¬naya obuchayushchaya sistema po fizike reaktorov [Auto¬mated teaching system for reactor physics]. M.: NI-YAU MIFI Publ., 2002.
7. Kosourov K.B., Kalinushkin A.E., Mil'to V.A., Mil'to N.V. [DPZ rejection technique for power units 1 and 2 of Tianwan NPP]. NIC «Kurchatovskij institut» [NRC «Kurchatov Institute»], 2012. Inv. No. 32/1-31-112 from 20.02.2012.
Review
For citations:
Ten S.V., Zagrebayev A.M. PREDICTIVE DIAGNOSTICS OF CONTROL SENSORS IN A NUCLEAR REACTOR. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2023;12(2):103-113. (In Russ.) https://doi.org/10.26583/vestnik.2023.243
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