| 摘要 |
FIELD: nuclear power engineering. SUBSTANCE: moderator, such as B4C, is proposed for fast reactor to soften neutron spectrum. Moderating element may be mixed up with nuclear fuel or with material other than that in homogeneous form or may be placed in heterogeneous form in special needle elements 14 located among needle elements 12 accommodating nuclear fuel or other material. EFFECT: reduced space factor and improved Doppler constant; reduced activity in case of coolant failure at all reactor points. 2 dwg |
