Overall design concept for the systems and facilities of the cold neutron source in the HANARO

The HANARO cold neutron source project is currently being proceeded to enhance basic research and utilization by using HANARO. The primary goal for the system design of a cold neutron source is to ensure that the reactor safety is not adversely affected by the cold neutron source or any of its systems. The safety design philosophy is a defence-in-depth approach to avoid any accidental hydrogen-oxygen reaction caused by a hydrogen release outward or an air ingress inward. The principle of a conservatism, simplicity, redundancy and passive design feature should be considered as much as possible in the systems design. Conceptual design for the HANARO CNS is summarized. Its consistency with the safety requirements will be extensively reviewed during the forthcoming design stage