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Title: Rover fuel element development activities: July-September 1971

Abstract

Experimental studies designed to fabricate NERVA graphite fuel elements capable of cyclic operations at exit gas temperatures of approximately 4400/degree/R were continued during this report period. Carbon precursor materials, manufacturing parameters, and deposition of carbide films are included in these studies. Accomplishments include the following: three commercial powders were extruded into elements having a desirable coefficient of thermal expansion; molded graphites using low-fired filler carbons and uncured short organic fibers produced graphites having an improved strain-to-failure value; thick-walled tubes of vapor-deposited zirconium carbide were produced, and the chemical composition was determined; vapor-deposited zirconium carbide coatings were applied to fuel-element bores; experimental graphite fuel elements were hot-gas tested; uranium-loaded ion exchange beads survived a heat treatment cycle of 2800/degree/C for three hours. Organic precursor carbon studies were oriented toward modification of the CAI polymers. 2 refs., 66 figs., 23 tabs.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge Y-12 Plant, TN (USA)
OSTI Identifier:
6980255
Report Number(s):
Y-DA-4494
ON: DE88012561
DOE Contract Number:  
AC05-84OS21400
Resource Type:
Technical Report
Resource Relation:
Other Information: Declassified 26 Mar 1974
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; FUEL ELEMENTS; FABRICATION; NERVA REACTOR; BINDERS; CARBON; CRACKS; EXTRUSION; GRAPHITE; IMPREGNATION; MICROSTRUCTURE; POLYMERS; PROGRESS REPORT; THERMAL EXPANSION; VAPOR DEPOSITED COATINGS; ZIRCONIUM CARBIDES; CARBIDES; CARBON COMPOUNDS; COATINGS; CRYSTAL STRUCTURE; DOCUMENT TYPES; ELEMENTAL MINERALS; ELEMENTS; EXPANSION; GAS COOLED REACTORS; HYDROGEN COOLED REACTORS; MATERIALS WORKING; MINERALS; MOBILE REACTORS; NONMETALS; POWER REACTORS; PROPULSION REACTORS; REACTOR COMPONENTS; REACTORS; SPACE POWER REACTORS; SPACE PROPULSION REACTORS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS; NESDPS Office of Nuclear Energy Space and Defense Power Systems; 220800* - Nuclear Reactor Technology- Propulsion Reactors; 050700 - Nuclear Fuels- Fuels Production & Properties

Citation Formats

Napier, J M, and Marrow, G B. Rover fuel element development activities: July-September 1971. United States: N. p., 1971. Web. doi:10.2172/6980255.
Napier, J M, & Marrow, G B. Rover fuel element development activities: July-September 1971. United States. doi:10.2172/6980255.
Napier, J M, and Marrow, G B. Tue . "Rover fuel element development activities: July-September 1971". United States. doi:10.2172/6980255. https://www.osti.gov/servlets/purl/6980255.
@article{osti_6980255,
title = {Rover fuel element development activities: July-September 1971},
author = {Napier, J M and Marrow, G B},
abstractNote = {Experimental studies designed to fabricate NERVA graphite fuel elements capable of cyclic operations at exit gas temperatures of approximately 4400/degree/R were continued during this report period. Carbon precursor materials, manufacturing parameters, and deposition of carbide films are included in these studies. Accomplishments include the following: three commercial powders were extruded into elements having a desirable coefficient of thermal expansion; molded graphites using low-fired filler carbons and uncured short organic fibers produced graphites having an improved strain-to-failure value; thick-walled tubes of vapor-deposited zirconium carbide were produced, and the chemical composition was determined; vapor-deposited zirconium carbide coatings were applied to fuel-element bores; experimental graphite fuel elements were hot-gas tested; uranium-loaded ion exchange beads survived a heat treatment cycle of 2800/degree/C for three hours. Organic precursor carbon studies were oriented toward modification of the CAI polymers. 2 refs., 66 figs., 23 tabs.},
doi = {10.2172/6980255},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1971},
month = {11}
}