COOLING DEVICE AND NUCLEAR STEAM SUPPLY SYSTEM

PROBLEM TO BE SOLVED: To easily check and repair an electromagnetic pump of a cooling device for cooling liquid metal.SOLUTION: A cooling device 3 for cooling liquid metal with water includes an outer container 30, a lid 15, a partition cylinder 49, a heat transfer pipe 37, an outer pipe 48, an inner pipe 47, and an electromagnetic pump 11. The outer container 30 includes: a flow-in port 31 and discharge port 32 of the liquid metal; an inlet 33 and outlet 34 of water; and an opening part closed by the lid 15. The partition cylinder 49 is arranged inside the outer container 30. The heat transfer pipe 37 is spirally extended from the inlet 33 to the outlet 34 inside an annular space between the outer container 30 and the partition cylinder 49. The inner pipe 47 and the outer pipe 48 are separated into a going channel 46 communicating with the space between the outer container 30 and the partition cylinder 49 and extending to the opening part closed by the lid 15 and a return channel 45 extending to the discharge port 32 from the terminal end of the going channel 46. The electromagnetic pump 11 gives a propulsive force for allowing the liquid metal to flow from the going channel 46 to the return channel 45.