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The safety approach of the Modular High-Temperature Gas-Cooled Reactor (MHTGR)

F.A. Silady and L.L. Parme

Energy, 1991, vol. 16, issue 1, 407-416

Abstract: The Modular High-Temperature Gas-Cooled Reactor (MHTGR) is an advanced reactor concept under development in a cooperative program involving the U.S. Government, the nuclear industry, and the utilities. The design utilizes the basic high-temperature gas-cooled (HTGR) features of ceramic fuel, helium coolant, and a graphite moderator. However, the specific size and configuration of the MHTGR are selected to utilize the inherent characteristics of these materials to develop passive safety features that provide a significantly higher margin of safety than current generation reactors. The design meets the U.S. Environmental Protection Agency's Protective Action Guidelines at the site boundary, hence precluding the need for sheltering or evacuation of the public during any licensing basis event. This safe behavior is not dependent upon operator action, is insensitive to operator error, and does not require a leak tight containment building.

Date: 1991
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