Patent ID: 8711998
Filing Date: 2014-04-29
Classification: G21C,Y02E

Abstract:
1. A cooling structure for a control rod drive mechanism that is placed at an upper portion of a reactor vessel and by which a control rod is inserted into and withdrawn from a reactor core, the cooling structure for the control rod drive mechanism comprising: a housing that is fixed to the upper portion of the reactor vessel; an air intake unit that takes cooling air into the housing; a first exhaust duct that is arranged side by side with the air intake unit in a circumferential direction of the housing, into which cooling air in the housing is suctioned through a first inlet at a lower portion thereof, and that guides the cooling air upward; a second exhaust duct that is disposed below the air intake unit, into which cooling air in the housing is suctioned through a second inlet, and that guides the cooling air to the first exhaust duct; and a discharging unit that is attached to an upper portion of the housing and discharges cooling air in the first exhaust duct to exterior.