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Title: NUCLEAR REACTOR UNLOADING APPARATUS

Abstract

An unloading device is described for a heterogeneous reactor of the type wherein the fuel elements are in the form of cylindrical slugs and are disposed in horizontal coolant tubes which traverse the reactor core, coolant fluid being circulated through the tubes. The coolant tubes have at least two inwardly protruding ribs from their lower surfaces to support the slugs in spaced relationship to the inside walls of the tubes. The unloading device consists of a ribbon-like extractor member insertable into the coolant tubes in the space between the ribs and adapted to slide under the fuel slugs thereby raising them off of the ribs and forming a slideway for removing them from the reactor. The fuel slugs are ejected by being forced out of the tubes by incoming new fuel slugs or by a push rod insentable through the inlet end of the fuel tubes.

Inventors:
;
Issue Date:
OSTI Identifier:
4261888
Patent Number(s):
2870075
Assignee:
U.S. Atomic Energy Commission
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
NSA Number:
NSA-13-014036
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
REACTORS; COOLANT LOOPS; CYLINDERS; FINS; FUEL ELEMENTS; MECHANICAL STRUCTURES; REACTOR CORE; REACTOR FUELING; RODS

Citation Formats

Leverett, M C, and Howe, J P. NUCLEAR REACTOR UNLOADING APPARATUS. United States: N. p., 1959. Web.
Leverett, M C, & Howe, J P. NUCLEAR REACTOR UNLOADING APPARATUS. United States.
Leverett, M C, and Howe, J P. Tue . "NUCLEAR REACTOR UNLOADING APPARATUS". United States.
@article{osti_4261888,
title = {NUCLEAR REACTOR UNLOADING APPARATUS},
author = {Leverett, M C and Howe, J P},
abstractNote = {An unloading device is described for a heterogeneous reactor of the type wherein the fuel elements are in the form of cylindrical slugs and are disposed in horizontal coolant tubes which traverse the reactor core, coolant fluid being circulated through the tubes. The coolant tubes have at least two inwardly protruding ribs from their lower surfaces to support the slugs in spaced relationship to the inside walls of the tubes. The unloading device consists of a ribbon-like extractor member insertable into the coolant tubes in the space between the ribs and adapted to slide under the fuel slugs thereby raising them off of the ribs and forming a slideway for removing them from the reactor. The fuel slugs are ejected by being forced out of the tubes by incoming new fuel slugs or by a push rod insentable through the inlet end of the fuel tubes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {1}
}