caa a22 4500 477065015 CHVBK 20180405111410.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF02415580 doi (NATIONALLICENCE)springer-10.1007/BF02415580 Some trends in fast-reactor characteristics on optimization subject to constraints on the functional safety [Elektronische Daten] [A. Kuz'min, V. Okunev] Conclusions: One has determined the general trends in the composition parameters in the treatment of various cases. The basic tendency in improvement in the safety characteristics lies in increasing the size of the core and the fuel-pin pitch. If one incorporates the constraint on the external dimensions or volume, the increase in core radial dimensions as a rule occurs at the expense of reduction in thickness of the side screen. In some cases, the constraints on the safety functionals during LOF WS enable one to improve stability for accidents of TOP WS type and vice versa. There is a considerable temperature margin before the fuel melts in the nominal state, so one can anticipate favorable completion of accident situations involving power increase not controlled by the protection system. However, the large temperature margin in the nominal state before the coolant boils and the sheaths are broken does not guarantee accident-free operation in LOF WS mode. Therefore, when one designs a safe fast reactor of the new generation, it is necessary to solve the optimizations in the presence of constraints on the safety functionals in accidents and it is desirable to have a large temperature margin before the fuel melts in the nominal state. This research was supported by a grant for research in the area of power engineering and electrical engineering. Plenum Publishing Corporation, 1996 Kuz'min A. aut Okunev V. aut Atomic Energy Kluwer Academic Publishers-Plenum Publishers 80/6(1996-06-01), 402-408 1063-4258 80:6<402 1996 80 10512 https://doi.org/10.1007/BF02415580 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02415580 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kuz'min A. aut NATIONALLICENCE 700 1- Okunev V. aut NATIONALLICENCE 773 0- Atomic Energy Kluwer Academic Publishers-Plenum Publishers 80/6(1996-06-01), 402-408 1063-4258 80:6<402 1996 80 10512 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer