IN-VESSEL CONTROL ROD DRIVE MECHANISM AND NUCLEAR REACTOR WITH THE SAME

摘要

Disclosed are an in-vessel control rod drive mechanism and a nuclear reactor with the same. The in-vessel control rod drive mechanism includes a control rod drive mechanism for regulating and a control rod drive mechanism for shutdown provided at an upper or lower space of a reactor core to insert or withdraw a regulating rod and a shutdown rod into/from the reactor core based on an operation state of the nuclear reactor, wherein the control rod drive mechanism for regulating and the control rod drive mechanism for shutdown are alternately arranged in the vertical direction. Therefore, a space of containment can be minimized due to the installation of the in-vessel control rod drive mechanism, and thus a rod ejection accident can be prevented, and a loss-of-coolant accident can be reduced.

主权项

1. An in-vessel control rod drive system, comprising:
a plurality of regulating control rod drive mechanisms, each configured to move a regulating rod along a direction relative to a reaction core for inserting into or withdrawing from the reactor core, the reaction core comprising an array of fuel units; a plurality of shutdown control rod drive mechanisms, each configured to move a shutdown rod along the direction relative to the reaction core for inserting into or withdrawing from the reactor core; wherein the regulating and shutdown control rod drive mechanisms are alternately arranged when viewed in the direction such that one of the regulating control rod drive mechanisms corresponds to a first one of the array of fuel units and that one of the shutdown control rod drive mechanisms corresponds to a second one of the array of fuel units which is immediately neighboring the first fuel unit.