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Title: Nuclear reactor

Abstract

A nuclear reactor in which the core components, including fuel-rod assemblies, control-rod assemblies, fertile rod-assemblies, and removable shielding assemblies, are supported by a plurality of separate inlet modular units. These units are referred to as inlet module units to distinguish them from the modules of the upper internals of the reactor. The modular units are supported, each removable independently of the others, in liners in the supporting structure for the lower internals of the reactor. The core assemblies are removably supported in integral receptacles or sockets of the modular units. The liners, units, sockets and assmblies have inlet openings for entry of the fluid. The modular units are each removably mounted in the liners with fluid seals interposed between the opening in the liner and inlet module into which the fluid enters and the upper and lower portion of the liner. Each assembly is similarly mounted in a corresponding receptacle with fluid seals interposed between the openings where the fluid enters and the lower portion of the receptacle or fitting closely in these regions. As fluid flows along each core assembly a pressure drop is produced along the fluid so that the fluid which emerges from each core assembly ismore » at a lower pressure than the fluid which enters the core assembly. However because of the seals interposed in the mountings of the units and assemblies the pressures above and below the units and assemblies are balanced and the units are held in the liners and the assemblies are held in the receptacles by their weights as they have a higher specific gravity than the fluid. The low-pressure spaces between each module and its liner and between each core assembly and its module is vented to the low-pressure regions of the vessel to assure that fluid which leaks through the seals does not accumulate and destroy the hydraulic balance.« less

Inventors:
 [1];  [2]
  1. Greensburg, PA
  2. Monroeville, PA
Issue Date:
OSTI Identifier:
862939
Patent Number(s):
4053359
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
DOE Contract Number:  
E(11-1)-2395
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nuclear; reactor; core; components; including; fuel-rod; assemblies; control-rod; fertile; rod-assemblies; removable; shielding; supported; plurality; separate; inlet; modular; units; referred; module; distinguish; modules; upper; internals; independently; liners; supporting; structure; removably; integral; receptacles; sockets; assmblies; openings; entry; fluid; mounted; seals; interposed; liner; enters; portion; assembly; similarly; corresponding; receptacle; fitting; closely; regions; flows; pressure; drop; produced; emerges; mountings; pressures; below; balanced; held; weights; specific; gravity; low-pressure; spaces; vented; vessel; assure; leaks; accumulate; destroy; hydraulic; balance; core component; fluid enters; pressure region; specific gravity; pressure drop; nuclear reactor; fluid flow; fluid flows; inlet modular; supporting structure; core assembly; modular units; upper internals; modular unit; rod assemblies; core assemblies; removably supported; removably mounted; core components; fuel-rod assemblies; movably supported; separate inlet; /376/976/

Citation Formats

Pennell, William E, and Rowan, William J. Nuclear reactor. United States: N. p., 1977. Web.
Pennell, William E, & Rowan, William J. Nuclear reactor. United States.
Pennell, William E, and Rowan, William J. Sat . "Nuclear reactor". United States. https://www.osti.gov/servlets/purl/862939.
@article{osti_862939,
title = {Nuclear reactor},
author = {Pennell, William E and Rowan, William J},
abstractNote = {A nuclear reactor in which the core components, including fuel-rod assemblies, control-rod assemblies, fertile rod-assemblies, and removable shielding assemblies, are supported by a plurality of separate inlet modular units. These units are referred to as inlet module units to distinguish them from the modules of the upper internals of the reactor. The modular units are supported, each removable independently of the others, in liners in the supporting structure for the lower internals of the reactor. The core assemblies are removably supported in integral receptacles or sockets of the modular units. The liners, units, sockets and assmblies have inlet openings for entry of the fluid. The modular units are each removably mounted in the liners with fluid seals interposed between the opening in the liner and inlet module into which the fluid enters and the upper and lower portion of the liner. Each assembly is similarly mounted in a corresponding receptacle with fluid seals interposed between the openings where the fluid enters and the lower portion of the receptacle or fitting closely in these regions. As fluid flows along each core assembly a pressure drop is produced along the fluid so that the fluid which emerges from each core assembly is at a lower pressure than the fluid which enters the core assembly. However because of the seals interposed in the mountings of the units and assemblies the pressures above and below the units and assemblies are balanced and the units are held in the liners and the assemblies are held in the receptacles by their weights as they have a higher specific gravity than the fluid. The low-pressure spaces between each module and its liner and between each core assembly and its module is vented to the low-pressure regions of the vessel to assure that fluid which leaks through the seals does not accumulate and destroy the hydraulic balance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

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