SLOWPOKE-2 is a 20 kW pool-type research reactor, producing a thermal neutron flux of 1012 n·cm–2·s–1 at five sample sites in the beryllium reflector. Because of its inherent safety, it is the only reactor in the world licensed for unattended operation. The present core contains approximately 900 g highly-enriched uranium (93 wt.% U-235 in U), which could be viewed as a potential source of nuclear weapons material. To overcome proliferation concerns, Atomic Energy of Canada Limited (AECL) has developed a low enrichment fuel containing less than 20 wt.% U-235 in U. The first low enrichment uranium core will be installed in a new SLOWPOKE-2 reactor at the Royal Military College, Kingston, Ontario.