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Title: CONTROL MEANS FOR NEUTRONIC REACTORS

Abstract

A control device surrounding the active portion of a nuclear reactor is described. The control device consists of a plurality of contiguous cylinders partly filled with a neutron absorbing material and partly filled with a neutron reflecting material, each cylinder having a longitudinal reentrant surface into which a portion of an adjacent cylinder extends, one of the cylinders having two re-entrant surfaces, and means for rotating the cylinders one at a time. (AEC)

Inventors:
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4807324
Patent Number(s):
US 3048534
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-16-026576
NSA Number:
NSA-16-026576
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; ABSORPTION; CONFIGURATION; CONTROL; CYLINDERS; NEUTRONS; PATENT; REACTOR CORE; REACTORS; REFLECTORS; ROTATION; SURFACES

Citation Formats

Tonks, L. CONTROL MEANS FOR NEUTRONIC REACTORS. United States: N. p., 1962. Web.
Tonks, L. CONTROL MEANS FOR NEUTRONIC REACTORS. United States.
Tonks, L. Wed . "CONTROL MEANS FOR NEUTRONIC REACTORS". United States. doi:.
@article{osti_4807324,
title = {CONTROL MEANS FOR NEUTRONIC REACTORS},
author = {Tonks, L.},
abstractNote = {A control device surrounding the active portion of a nuclear reactor is described. The control device consists of a plurality of contiguous cylinders partly filled with a neutron absorbing material and partly filled with a neutron reflecting material, each cylinder having a longitudinal reentrant surface into which a portion of an adjacent cylinder extends, one of the cylinders having two re-entrant surfaces, and means for rotating the cylinders one at a time. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 1962},
month = {Wed Aug 01 00:00:00 EDT 1962}
}
  • A nuclear reactor comprising a cylindrical active portion, a fixed reflector around the active portion having equally spaced apertures therein parallel to the longitudinal axis of the active portion, and rotatable cylindrical bodies in each of these apertures including parallel neutron reflector portions and parallel neutron absorber portions are described. (AEC)
  • Nuclear reactor control rods comprised of highly compressed and sintered finely divided metal alloy panticles and fine metal oxide panticles substantially uniformly distributed theretbrough are described. The metal alloy consists essentially of silver, indium, cadmium, tin, and aluminum, the amount of each being present in centain percentages by weight. The oxide particles are metal oxides of the metal alloy composition, the amount of oxygen being present in certain percentages by weight and all the oxygen present being substantially in the form of metal oxide. This control rod is characterized by its high strength and resistance to creep at elevated temperatures.
  • A drive mechanism is presented for the control rod or a nuclear reactor. In this device the control rod is coupled to a drive shaft which extends coaxially through the rotor of an electric motor for relative rotation with respect thereto. A gear reduction mehanism is coupled between the rotor and the drive shaft to convert the rotary motion of the motor into linear motion of the shaft with a comparatively great reduction in speed, thereby providing relatively glow linear movement of the shaft and control rod for control purposes.