| 摘要 |
1,135,974. Reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. 14 Nov., 1967 [23 Dec., 1966], No. 51830/67. Heading G6C. In a molten sodium cooled fast reactor, the core and heat exchangers are mounted within a pressure vessel. In order to interrupt the flow of coolant through one or more of the exchangers without interrupting the circulation through the remainder, an inert gas is injected into the upper volume of the selected exchangers. The gas forms a coolant free surface within the exchanger and acts against the pump pressure to prevent the coolant inflow to the exchanger. The core 8 is cooled by sodium circulated by pump 42 through the exchanger 24. The sodium enters 24 through the inlets 28 and flows downwards to the outlets 30 and to arrest coolant flow, argon gas is injected into the bell casing 46 through the pipe 48. A free sodium surface is established in 26, Fig. 3, and coolant entry through the inlets 28 ceases. Convection cooling occurs when the pumps are not operating. |
