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Title: Fabrication of TREAT Fuel with Increased Graphite Loading

Abstract

As part of the feasibility study exploring the replacement of the HEU fuel core of the TREAT reactor at Idaho National Laboratory with LEU fuel, this study demonstrates that it is possible to increase the graphite content of extruded fuel by reformulation. The extrusion process was use to fabricate the “upgrade” core1 for the TREAT reactor. The graphite content achieved is determined by calculation and has not been measured by any analytical method. In conjunction, a technique, Raman Spectroscopy, has been investigated for measuring the graphite content. This method shows some promise in differentiating between carbon and graphite; however, standards that would allow the technique to be calibrated to quantify the graphite concentration have yet to be fabricated. Continued research into Raman Spectroscopy is on going. As part of this study, cracking of graphite extrusions due to volatile evolution during heat treatment has been largely eliminated. Continued research to optimize this extrusion method is required.

Authors:
 [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1119809
Report Number(s):
LA-UR-14-20684
DOE Contract Number:
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS

Citation Formats

Luther, Erik Paul, Leckie, Rafael M., Dombrowski, David E., and Papin, Pallas A. Fabrication of TREAT Fuel with Increased Graphite Loading. United States: N. p., 2014. Web. doi:10.2172/1119809.
Luther, Erik Paul, Leckie, Rafael M., Dombrowski, David E., & Papin, Pallas A. Fabrication of TREAT Fuel with Increased Graphite Loading. United States. doi:10.2172/1119809.
Luther, Erik Paul, Leckie, Rafael M., Dombrowski, David E., and Papin, Pallas A. 2014. "Fabrication of TREAT Fuel with Increased Graphite Loading". United States. doi:10.2172/1119809. https://www.osti.gov/servlets/purl/1119809.
@article{osti_1119809,
title = {Fabrication of TREAT Fuel with Increased Graphite Loading},
author = {Luther, Erik Paul and Leckie, Rafael M. and Dombrowski, David E. and Papin, Pallas A.},
abstractNote = {As part of the feasibility study exploring the replacement of the HEU fuel core of the TREAT reactor at Idaho National Laboratory with LEU fuel, this study demonstrates that it is possible to increase the graphite content of extruded fuel by reformulation. The extrusion process was use to fabricate the “upgrade” core1 for the TREAT reactor. The graphite content achieved is determined by calculation and has not been measured by any analytical method. In conjunction, a technique, Raman Spectroscopy, has been investigated for measuring the graphite content. This method shows some promise in differentiating between carbon and graphite; however, standards that would allow the technique to be calibrated to quantify the graphite concentration have yet to be fabricated. Continued research into Raman Spectroscopy is on going. As part of this study, cracking of graphite extrusions due to volatile evolution during heat treatment has been largely eliminated. Continued research to optimize this extrusion method is required.},
doi = {10.2172/1119809},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2014,
month = 2
}

Technical Report:

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