Annular core for Modular High-Temperature Gas-Cooled Reactor (MHTGR)

Conference · Sat Aug 01 04:00:00 EDT 1987

OSTI ID:6048830

Turner, R F; Baxter, A M; Stansfield, O M; Vollman, R E

The active core of the 350 MW(t) MHTGR is annular in configuration, shaped to provide a large external surface-to-volume ratio for the transport of heat radially to the reactor vessel in case of a loss of coolant flow. For a given fuel temperature limit, the annular core provides approximately 40% greater power output over a typical cylindrical configuration. The reactor core is made up of columns of hexagonal blocks, each 793-mm high and 360-mm wide. The active core is 3.5 m in o.d., 1.65 m in i.d., and 7.93-m tall. Fuel elements contain TRISO-coated microspheres of 19.8% enriched uranium oxycarbide and of fertile thorium oxide. The core is controlled by 30 control rods which enter the inner and outer side reflectors from above.

• Research Organization: General Atomics Co., San Diego, CA (USA)
• DOE Contract Number: AC03-84SF11963
• OSTI ID: 6048830
• Report Number(s): GA-A-18870; CONF-870812-29; ON: DE87013998
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210300* -- Power Reactors
Nonbreeding
Graphite Moderated
ACCIDENTS
ACTINIDE COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COATED FUEL PARTICLES
CONFIGURATION
CONTAINERS
DESIGN
FUEL ELEMENTS
FUEL PARTICLES
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HTGR TYPE REACTORS
LOSS OF FLOW
MODULAR STRUCTURES
OXIDES
OXYGEN COMPOUNDS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR CORES
REACTOR VESSELS
REACTORS
THORIUM COMPOUNDS
THORIUM OXIDES
URANIUM CARBIDES
URANIUM COMPOUNDS