Abstract:

ATOMIC ENERGY COMMISSION RESEARCH AND DEVELOPMENT REPORT CHEMICAL PROBLEMS OF NON-AQUEOUS FLUID FUELED REACTORS (MIT-5001)

Authors

  • George Scatchard
  • Herbert M. Clark
  • Sidney Golden
  • Alvin Boltax
  • Reinhardt Schuhmann, Jr.

Before the development of reactors using mn-aqueous fluid fuels can be advanced beyond the preliminary conceptual stage, it will be necessary to have a much broader background of knowledge of the inorganic and physical chemistry of relevant substances than is now available.
This report discusses the chemical problems of these reactors and suggests a program of experimental and theoretical chemical research broad enough to serve as an adequate basis for their engineering development.

The three main problems of non-aqueous fluid-fuel reactors are:

1. selection of a fuel system which meets nuclear and thermal requirements ;

2. control of corrosion of structural materials;

3. development of an efficient and economical separation process. Discovery of a fuel system which can be handled as a liquid and has

Discovery of a fuel system which can be handled as a liquid and has desirable nuclear properties is of course essential to the successful development of these reactors. The work of this project and the investigation of other groups considering non-aqueous reactor fuels has shown the following fuel systems to be of interest:

For thermal reactors:
1. Dilute solution of uranium in bismuth;
2. Solutions of UF i n certain mixed fluorides such as:

NaF – BeF2, NaF-ZrF4, LiF -BeF2, or DF -NaF.

For fast reactors with fuel circulated to an external heat exchanger:

Solution of UClA,UCl3, and/or PuCl3 in certain chlorides, notably NaCl, KCl, and/or PbCl2.

 

For fast reactors internally cooled:

Concentrated solution of uranium and/or plutonium in iron, nickel, bismuth, or aluminum.

The degree of solubility of reactor products such as plutonium and individual fission products, ineach of these reactor fuels is obviously of importance second only to that of their physical and nuclear properties.

For fast reactors with fuel circulated to an external heat exchanger:

Concentrated solution of uranium and/or plutonium in iron, nickel, bismuth, or aluminum.

The degree of solubility of reactor products such as plutonium and individual fission products, in each of these reactor fuels is obviously of importance second only to that of their physical and nuclear properties.

Corrosionof structural materials by these fuel systems is probably the most difficult single factor impeding developent of a

http://egeneration.org/wp-content/Repository/MIT_Analysis/MIT-5001.pdf

 

Dec 4, 2014   799   egeneration    MIT Analysis
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