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Title: REACTOR CONTROL DEVICE

A wholly mechanical compact control device is designed for automatically rendering the core of a fission reactor subcritical in response to core temperatures in excess of the design operating temperature limit. The control device comprises an expansible bellows interposed between the base of a channel in a reactor core and the inner end of a fuel cylinder therein which is normally resiliently urged inwardly. The bellows contains a working fluid which undergoes a liquid to vapor phase change at a temperature substantially equal to the design temperature limit. Hence, the bellows abruptiy expands at this limiting temperature to force the fuel cylinder outward and render the core subcritical. The control device is particularly applicable to aircraft propulsion reactor service. (AEC)
Authors:
Publication Date:
OSTI Identifier:
4779760
Report Number(s):
US 3052616
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Research Org:
Originating Research Org. not identified
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; AIRCRAFT; CONFIGURATION; CONTROL; CONTROL SYSTEMS; CRITICALITY; DEFORMATION; EXPANSION; FUEL ELEMENTS; HIGH TEMPERATURE; LIQUIDS; MOTION; OPERATION; PATENT; PROPULSION; REACTOR CORE; REACTORS; VAPORS; VARIATIONS