The modular high temperature gas-cooled reactor (MHTGR) containment trade study

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6005233

Dilling, D A ^[1]; Inamati, S B; Silady, F A; Parme, L L ^[2]

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1. Bechtel National, Inc., San Francisco, CA (USA)
2. General Atomics Co., San Diego, CA (USA)

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-coolant, and a graphite moderator. The key design parameters, including power, power density, and core and configuration of the MHTGR are selected to utilize the inherent properties of these materials to develop passive safety features that provide a significantly higher margin of safety than current generation reactors. In this paper the reference MHTGR module is combined with several alternatives, each characterized by an alternate containment building structure providing differing degrees of radionuclide containment. The reference design and each alternate are described and their performance compared. The MHTGR radionuclide source and how it relates to the radionuclide retention provided by buildings and building features are discussed. This is followed by detailed considerations leading to the selection of five alternatives. The underlying assumptions and approach employed in assessing alternative designs are summarized.

• OSTI ID: 6005233
• Report Number(s): CONF-901034--
• Country of Publication: United States
• Language: English

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