naa a22 4500 510762204 CHVBK 20180411083143.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1134/S0040601513050108 doi (NATIONALLICENCE)springer-10.1134/S0040601513050108 Emergency cooling down of fast-neutron reactors by natural convection (a review) [Elektronische Daten] [A. Zhukov, A. Sorokin, Yu. Kuzina] Various methods for emergency cooling down of fast-neutron reactors by natural convection are discussed. The effectiveness of using natural convection for these purposes is demonstrated. The operating principles of different passive decay heat removal systems intended for cooling down a reactor are explained. Experimental investigations carried out in Russia for substantiating the removal of heat in cooling down fast-neutron reactors are described. These investigations include experimental works on studying thermal hydraulics in small-scale simulation facilities containing the characteristic components of a reactor (reactor core elements, above-core structure, immersed and intermediate heat exchangers, pumps, etc.). It is pointed out that a system that uses leaks of coolant between fuel assemblies holds promise for fast-neutron reactor cooldown purposes. Foreign investigations on this problem area are considered with making special emphasis on the RAMONA and NEPTUN water models. A conclusion is drawn about the possibility of using natural convection as the main method for passively removing heat in cooling down fast-neutron reactors, which is confirmed experimentally both in Russia and abroad. Pleiades Publishing, Ltd., 2013 natural convection nationallicence emergency cooling down nationallicence fast-neutron reactor nationallicence passive decay heat removal system nationallicence experimental investigations nationallicence thermal hydraulics nationallicence model nationallicence similarity criterion nationallicence temperature nationallicence heat exchanger nationallicence Zhukov A. State Scientific Center of the Russian Federation-the Leipunskii Energy Physics Institute, pl. Bondarenko 1, 249033, Obninsk, Kaluzhskaya oblast, Russia aut Sorokin A. State Scientific Center of the Russian Federation-the Leipunskii Energy Physics Institute, pl. Bondarenko 1, 249033, Obninsk, Kaluzhskaya oblast, Russia aut Kuzina Yu State Scientific Center of the Russian Federation-the Leipunskii Energy Physics Institute, pl. Bondarenko 1, 249033, Obninsk, Kaluzhskaya oblast, Russia aut Thermal Engineering SP MAIK Nauka/Interperiodica 60/5(2013-05-01), 345-354 0040-6015 60:5<345 2013 60 11509 https://doi.org/10.1134/S0040601513050108 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0040601513050108 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhukov A. State Scientific Center of the Russian Federation-the Leipunskii Energy Physics Institute, pl. Bondarenko 1, 249033, Obninsk, Kaluzhskaya oblast, Russia aut NATIONALLICENCE 700 1- Sorokin A. State Scientific Center of the Russian Federation-the Leipunskii Energy Physics Institute, pl. Bondarenko 1, 249033, Obninsk, Kaluzhskaya oblast, Russia aut NATIONALLICENCE 700 1- Kuzina Yu State Scientific Center of the Russian Federation-the Leipunskii Energy Physics Institute, pl. Bondarenko 1, 249033, Obninsk, Kaluzhskaya oblast, Russia aut NATIONALLICENCE 773 0- Thermal Engineering SP MAIK Nauka/Interperiodica 60/5(2013-05-01), 345-354 0040-6015 60:5<345 2013 60 11509 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer