| 摘要 |
867,969. Nuclear reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 26, 1958 [March 13, 1957], No. 8364/57. Class 39(4). A fast reactor having fuel elements as disclosed in Specification 778,881 has star shaped core plates 3, 33 supporting the fuel elements in holes 4, the plates being located at the upper and lower ends of a skirt 5 surrounded by a hexagonal skirt 6. Division plates 8 form twelve triangular section parts 10, each part containing a carrier 11 supporting ten fuel elements and movable on rollers 12 for controlling the reactor and for emergency shut-down. Each carrier rests on the arm 31 of an L-shaped member 30 which may be moved vertically by the screw and nut mechanism disclosed in Specification 786,486. Electrical interlocks ensure that only one carrier 11 may be raised at one time but that all the carriers may be simultaneously released to fall from the core. |
