The Concept of a Passive Water-cooled Tube Reactor Without Emergency Core Cooling System

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Soon Heung Chang
Won-Pil Baek

Abstract

An ECCS-free passive water-cooled tube reactor concept is beingstudied to assess the feasibility and to determine basic conceptualdesign features. It is a loop-type heavy water moderated (and heavyor light water cooled) reactor with matrix-type fuel and passivemoderator cooling system. Among several options for fuel channeldesign, special attention is given to two types: the fuel channelwith metallic fuel matrix and the fuel channel with Zircaloymatrix. Preliminary analysis shows that the fuel channeltemperature can be maintained within the permissible range for bothnormal operation and complete LOCA conditions.

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