Fast Reactors. Status and Prospects

Poplavskii, V. M.

doi:10.1023/b:aten.0000038094.56394.e6

Cited by 7 publications

(8 citation statements)

References 2 publications

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“…The algorithm of this software package is based on a uni versal thermodynamic method of determining the equilibrium characteristics of arbitrary heterogeneous systems based on the entropy maximum principle. The temperature was chosen to be 900 K, since this fuel can be used in fast reactors with operating tempera tures of 900-1000 K [7]. To choose the burn up frac tion, we used the values achieved to date [8].…”

Section: Calculation Proceduresmentioning

confidence: 99%

Effect of the electron decay of metallic fission products on the chemical and phase compositions of an uranium-plutonium fuel irradiated by fast neutrons

et al. 2011

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After fast neutron irradiation, uranium-plutonium nitride U 0.8 Pu 0.2 N is shown to acquire a com plex structure consisting of a solid solution that is based on the nitrides of uranium, plutonium, americium, neptunium, zirconium, yttrium, and lanthanides and contains condensed phases U 2 N 3 , CeRu 2 , BaTe, Ba 3 N 2 , CsI, Sr 3 N 2 , LaSe, metallic molybdenum, technetium, and U(Ru, Rh, Pd) 3 intermetallics. The con tents and compositions of these phases are calculated at a temperature of 900 K and a burn up fraction up to 14% (U + Pu). The change in the composition of the irradiated uranium-plutonium nitride is studied during the electron decay of metallic radionuclides. The kinetics of transformation of U 103 Ru 3 , 137 CsI, 140 Ba 3 N 2 , and 241 PuN is calculated.

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Section: Calculation Proceduresmentioning

confidence: 99%

Effect of the electron decay of metallic fission products on the chemical and phase compositions of an uranium-plutonium fuel irradiated by fast neutrons

et al. 2011

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“…Ñüîãîäí³ áàãàòüìà àâòîðàìè ðîçðîáëåíî ìî-äåëüí³ õàðàêòåðèñòèêè, ùî âèçíà÷àþòü ñïåöèô³êó ä³ÿëüíîñò³ ñïîðòñìåí³â â ³ãðîâèõ âèäàõ ñïîðòó: ð³âíÿ ðîçâèòêó ô³çè÷íèõ ÿêîñòåé, ôóíêö³îíàëü-íî¿ ï³äãîòîâëåíîñò³, òåõí³êî-òàêòè÷íî¿ ï³äãîòîâëå-íîñò³, åíåðãåòè÷íîãî ïîòåíö³àëó, ìîðôîôóíêö³îíàëüíèõ, àíòðîïîìåòðè÷íèõ, ïñèõîô³ç³îëîã³÷íèõ õàðàêòåðèñòèê òîùî [5].…”

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Theoretical and methodological principles of development and the use of model characteristics of technical and tactical actions of elite basketball players

Шинкарук¹,

Безмилов²

2012

Theory and Methods of Physical Education and Sports

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Резюме. Обоснована необходимость применения ряда важнейших методических положений для разработки модельных характеристик соревновательной деятельности баскетболистов высокого класса. Установлены особенности реализации технико-тактических действий баскетболистами национальных сборных команд на играх последних девяти чемпионатов Европы (1995-2011 гг.). Разработаны модельные характеристики технико-тактических действий баскетболистов высокой квалификации различного игрового амплуа в минуту игрового времени, а также обосновывается необходимость разработки на их базе интегрального способа оценки соревновательной деятельности с учетом специализации спортсменов. Ключевые слова: соревновательная деятельность, коэффициент полезных действий, технико-тактические действия, игровое амплуа, структура соревновательной деятельности, модельные характеристики.Summary. In the article, the necessity of application of set of major methodical principles is grounded for development of model descriptions of competitive activity of elite basketball players . The features of realization of technical and tactical actions by basketball players of national teams in the games of the last nine championships of Europe (1995Europe ( -2011 are revealed. Model descriptions of technical and tactical actions of elite basketballplayers of different amplua are developed for a minute of playing time, as well as the need for development on their base of integral method for estimation of competitive activity of athletes, that takes into account their specialization, is substantiated.

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“…The thermophysical and mass/size characteristics of a dual-wall steam generator were calculated for a variant of its connection to the BN-800 first loop [6] and compared with the parameters of a single-wall BN-800 steam generator connected to the second loop. The characteristics of the dual-wall steam generator (evaporator and heater in a single vessel) with lead-bismuth and sodium as the intermediate medium, placed in the first loop, as compared with an analogous single-wall BN-800 module in the 70 MW(t) second loop, 349 heat-transferring water tubes each with dimension 16 × 2.5 mm, live steam temperature 490°C, and feed medium temperature 210°C are as follows: Analysis shows that because the total temperature differential between the sodium at the reactor exit and the livesteam temperature is used it is possible to obtain for dual-wall steam generators a satisfactory length for the heat-transferring tubes and acceptable mass characteristics, especially with sodium as the intermediate medium.…”

mentioning

confidence: 99%

Power-generating unit with dual-loop sodium-cooled fast reactor and dual-wall steam generator

Bagdasarov

Kamaev

2009

At Energy

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Due to advances in the technology of liquid metals, the idea, advanced in the 1950s, of replacing the intermediate sodium loop in a fast reactor with sodium coolant in the first loop by an intermediate stationary heat-transferring medium between the sodium flows in the first loop and water-steam is being revived. The mass/size characteristics and safety of such steam generators are evaluated from the standpoint of water-steam getting into the first loop of the reactor. Intermediate media that could be used are analyzed. An example of the implementation of dual-loop schemes for sodium-cooled fast reactors is proposed for a 900 MW(e) power-generating unit.

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Fast Reactors. Status and Prospects

Cited by 7 publications

References 2 publications

Effect of the electron decay of metallic fission products on the chemical and phase compositions of an uranium-plutonium fuel irradiated by fast neutrons

Effect of the electron decay of metallic fission products on the chemical and phase compositions of an uranium-plutonium fuel irradiated by fast neutrons

Theoretical and methodological principles of development and the use of model characteristics of technical and tactical actions of elite basketball players

Power-generating unit with dual-loop sodium-cooled fast reactor and dual-wall steam generator

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