Dry store for nuclear fuel elements - cooled by heat pipes through radiation screen exposed to natural cooling draught

摘要

The Parent Patent No. 2753034 described a dry storage system for spent nuclear fuel elements which encloses the storage frames in a radiation screen with a cooling device, a gastight outer enclosure and a lock for loading and unloading. The cooling device is pref. composed of heat pipes. The latter are inserted in protective tubes which penetrate the screen and are closed against the store space. Their cooling is by natural draught outside the screen. The absence of pumps and of ancillary supervisory equipment raises the safety of the dry storage systems.