High Quality Content by WIKIPEDIA articles! The Advanced CANDU Reactor (ACR) is a Generation III+ design and is a further development of existing CANDU reactors designed by Atomic Energy of Canada Limited. It is a heavy-water-cooled reactor that incorporates features of both Pressurised heavy water reactors (PHWR) and Advanced Pressurized Water Reactors (APWR) technologies. It uses a similar design concept to the Steam Generating Heavy Water Reactor (SGHWR). The design uses lightly enriched uranium (LEU) fuel, light water coolant, and a separate heavy water moderator. The reactivity regulating and safety devices are located within the low pressure moderator. The ACR also incorporates characteristics of the CANDU design, including on-power refueling with the CANFLEX fuel; a long prompt neutron lifetime; small reactivity holdup; two fast, totally independent, dedicated safety shutdown systems; and an emergency core cooling system. The compact reactor core design reduces core size by half for the same power output over the older design.

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