IMPROVEMENTS IN OR RELATING TO NUCLEAR REACTORS

Patent · Wed May 30 04:00:00 EDT 1962

OSTI ID:4827894

Moore, R V; Hackney, S; Brown, G

A graphite-moderated gas-cooled reactor is designed so that access to the core through the containment vessel can be had for radioactive decay without waiting. The reactor has a composite radiation shield, comprising alternate layers of mild or boron steel plates and graphite blocks between the moderator structure and part of the containment vessel, and the shield has curved passages for passing coolant to the heat exchanger assembly above the shield. The lower end of the casing containing the core is closed by a similar shield pierced with a lattice of Ybranched fueling tubes. Thus, the two shields prevent the top and bottom of the containmeot vessel from being activated during reactor operation and allow personnel to perform necessary repairs. An alternate construction is also described in which fueling is done irom the top. (D.L.C.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-021745
• OSTI ID: 4827894
• Report Number(s): GB 897443
• Country of Publication: United Kingdom
• Language: English

Related Subjects

ACTIVATION
COOLANT LOOPS
DECAY
FUEL ELEMENTS
GAS COOLANT
GAS FLOW
GRAPHITE MODERATOR
HEAT EXCHANGERS
LAYERS
MAINTENANCE
MECHANICAL STRUCTURES
PATENT
PERSONNEL
PLANNING
PLATES
PRESSURE VESSELS
RADIOACTIVITY
REACTOR TECHNOLOGY
REACTORS
REMOTE HANDLING
SHIELDING
STEELS
TRANSPORT