Abstract
The results of experimental studies of the applicability of the float-discrete method for measuring the level of a heavy liquid-metal coolant (HLMC) using sealed magnetically controlled contacts as a sensitive element are presented. These contacts register the coolant level in the field of a permanent magnet located on the surface of a heavy liquid-metal coolant. The performance of such a level sensor was studied using a control tank with a lead-bismuth coolant under conditions close to natural ones. This method is simple, but its main problem is maintaining the integrity of sealed magnetically controlled contacts when exposed to high temperatures. The experiments were carried out using a float-discrete level sensor prototype on a high-temperature stand with a lead-bismuth coolant. The data collected during the processing of the results confirm with reliable accuracy the applicability of the float-discrete method for monitoring the level of a heavy liquid-metal coolant. An HLMC level measuring device operating according to this method makes it possible to monitor the level in tanks while maintaining the tightness of the circuit. Due to this, it is possible to abandon the currently common methods for determining the level of HLMC using electric contact level sensors in which the sealing of the circuit is impossible. This device can be used on various experimental stands with liquid-metal coolants as well as in reactor plants and accelerator-controlled systems in the temperature range of 210–230°C, for example MYRRHA. To ensure the operability of the level transmitter at higher temperatures, it is necessary to upgrade the reed switch cooling system.
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Notes
BREST is a natural safety fast reactor with a lead coolant, SVBR is a lead-bismuth fast reactor, BRS-GPG is a lead-cooled fast reactor with a horizontal steam generator.
REFERENCES
E. O. Adamov, L. A. Bol’shov, I. Kh. Ganev, A. V. Zrodnikov, A. K. Kuznetsov, A. V. Lopatkin, A. M. Mastepanov, V. V. Orlov, V. I. Rachkov, V. S. Smirnov, M. I. Solonin, V. V. Uzhanova, N. A. Chernoplekov, and G. E. Shatalov, White Book of Nuclear Power (NIKIE-T, Moscow, 2001) [in Russian]. http://elib. biblioatom.ru/text/belaya-kniga-yadernoy-energetiki_ 2001/go,0
A. V. Beznosov and T. A. Bokova, Equipment, Layout and Operation Modes of Heavy Liquid Metal-Cooled Loops in Nuclear Power Industry (Nizhegor. Gos. Tekh. Univ. im. R. E. Alekseeva, Nizhny Novgorod, 2011) [in Russian].
V. V. Dzhangobekov, V. S. Stepanov, A. V. Dedul’, N. N. Klimov, S. N. Bolvanchikov, and M. P. Vakhrushin, “SVBR-100 reactor unit for low and medium capacity modular nuclear power plants,” Presented at Heavy Liquid Metal Coolants in Nuclear Technology (TZhMT-2013): Proc. 4th Conf., Obninsk, Russia, Sept. 23–26, 2013. http://www.gidropress.podolsk.ru/ files/publication/publication2013/documents/245.pdf
A. V. Beznosov, T. A. Bokova, P. A. Bokov, A. R. Marov, A. V. L’vov, and N. S. Volkov, “Substantiation of technical solutions of the reactor loop of low and medium capacity heavy liquid metal cooled BRS-GPG units for land-based and floating nuclear power plants,” Tr. NGTU im. R. E. Alekseeva, No. 2 (129), 64–76 (2020). https://doi.org/10.46960/1816-210X_2020_2_64
A. V. Beznosov, T. A. Bokova, P. A. Bokov, A. R. Marov, A. V. L’vov, and N. S. Volkov, “Substantiation of technical solutions of the reactor loop of low and medium capacity heavy liquid metal cooled BRS-GPG units,” Vopr. At. Nauki Tekh., Ser.: Yad.-Reakt. Konst., No. 1, 132–139 (2020). https://doi.org/10.55176/2414-1038-2020-1-132-139
V. S. Chirkin, Thermophysical Properties of Materials for Nuclear Engineering (Atomizdat, Moscow, 1968) [in Russian].
A. V. Chechetkin, High-Temperature Coolants (Energiya, Moscow, 1971) [in Russian].
A. V. Beznosov, Yu. G. Dragunov, and V. I. Rachkov, Heavy Liquid Metal Coolants in Nuclear Engineering (IzdAT, Moscow, 2007) [in Russian]. https://search. rsl.ru/ru/record/01003085239
R. Reshm, U. Ramachandraiah, K. R. Devabalaji, and R. Sitharthan, “Liquid metal level measurement techniques,” in Recent Trends on Renewable Energy Smart Grid and Electric Vehicle Technologies (RESGEVT 2020): Proc. Int. Conf., Vellore, India, July 9, 2020; IOP Conf. Ser.: Mater. Sci. Eng. 937, 012027 (2020). https://doi.org/10.1088/1757-899X/937/1/012027
V. P. Kuz’menko, N. I. Sirenko, and A. P. Movchan, “Coolant level control in a VVER-1000 reactor in heavy accidents using heat-recovery devices,” Visn. Nats. Tekh. Univ. “KhPI”, Ser.: Avtom. Priladobud., No. 8 (982), 69–75 (2013).
V. V. Leshkov and V. D. Taranin, “Inductive level meter,” RF Patent No. 2328704, Byull. Izobret., No. 19 (2008).
V. D. Taranin, “Inductive level meter for liquid metal coolant,” RF Patent No. 2558010, Byull. Izobret., No. 11 (2015).
M. Ratajczak, D. Hernández, T. Richter, D. Otte, D. Buchenau, N. Krauter, and T. Wondrak, “Measurement techniques for liquid metals,” in Proc. Final LIMTEC-H Colloq. and Int. Symp. on Liquid Metal Technologies, Dresden, Germany, Sept. 19–20, 2017; IOP Conf. Ser.: Mater. Sci. Eng. 228, 012023 (2017). https://doi.org/10.1088/1757-899X/228/1/012023
E. Kent, M. Weathered, J. Rein, D. Kultgen, and C. Grandy, “Report of METL mutual inductance level sensor development for use in liquid metals — FY2023,” Nuclear Science and Engineering Report No. ANL-NRIC-002/ANL-METL-45 (Argonne National Laboratory (ANL), Argonne, Ill., 2023).
V. Eltishchev, S. Mandrykin, and I. Kolesnichenko, “Inductive level sensor: Experiment and calculation,” in Proc. Int. Conf. on Advanced Problems of Electrotechnology, Yekaterinburg, Russia, Oct. 1–2, 2020; IOP Conf. Ser.: Mater. Sci. Eng. 950, 012014 (2020).
L. I. Trakhtenberg and V. P. Deniskin, “Device for non-contact level and resistivity measurement of molten metals,” USSR Authorship Certificate No. 197214, Byull. Izobret., No. 12 (1967).
P. L. Kirillov, V. D. Kolesnikov, V. A. Kuznetsov, and N. M. Turchin, “Instruments for measuring the pressure, flow, and level of fused alkali metals,” At. Energy 9, 685–693 (1961). https://doi.org/10.1007/BF01709194
A. A. Azimov, Sh. M. Gulyamov, and I. B. Khamadov, “Discrete level meter,” USSR Authorship Certificate No. 469890, Byull. Izobret, No. 17 (1975).
G. V. Polyaev, P. V. Tel’minov, and V. A. Tsymbalist, “Discrete level meter,” RF Patent No. 2193165, Byull. Izobret, No. 32 (2002).
GOST (State Standard) 427-75. Measuring Metal Rulers. Basic Parameters and Dimensions. Specifications (Standartinform, Moscow, 2007).
K. Van Tichelen, G. Kennedy, F. Mirelli, A. Marino, A. Toti, D. Rozzia, E. Cascioli, S. Keijers, and P. Planquart, “Advanced liquid-metal thermal-hydraulic research for MYRRHA,” in Proc. 2018 Int. Topical Meeting on Advances in Thermal Hydraulics (ATH 2018), Orlando, Fla., Nov. 11–15, 2018; Nucl. Technol. 206, 150–163 (2020). https://doi.org/10.1080/00295450.2019.1614803
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The presented results were obtained within the framework of a state assignment in the field of scientific activity (topic No. FSWE–2023–0005 “Features and specifics of the use of heavy liquid metal coolants in fast neutron reactor plants”).
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Bokova, T.A., Meluzov, A.G., Volkov, N.S. et al. Experimental Studies of the Float-Discrete Method for Measuring the Level of a Heavy Liquid-Metallic Coolant. Therm. Eng. 70, 971–978 (2023). https://doi.org/10.1134/S0040601523120030
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DOI: https://doi.org/10.1134/S0040601523120030