SciTech Connect

Title: Materials considerations for molten salt accelerator-based plutonium conversion systems

Materials considerations for molten salt accelerator-based plutonium conversion systems Accelerator-driven transmutation technology (ADTT) refers to a concept for a system that uses a blanket assembly driven by a source of neutrons produced when high-energy protons from an accelerator strike a heavy metal target. One application for such a system is called Accelerator-Based Plutonium Conversion, or ABC. Currently, the version of this concept being proposed by the Los Alamos National Laboratory features a liquid lead target material and a blanket fuel of molten fluorides that contain plutonium. Thus, the materials to be used in such a system must have, in addition to adequate mechanical strength, corrosion resistance to molten lead, corrosion resistance to molten fluoride salts, and resistance to radiation damage. In this report the corrosion properties of liquid lead and the LiF-BeF{sub 2} molten salt system are reviewed in the context of candidate materials for the above application. Background information has been drawn from extensive past studies. The system operating temperature, type of protective environment, and oxidation potential of the salt are shown to be critical design considerations. Factors such as the generation of fission products and transmutation of salt components also significantly affect corrosion behavior, and procedures for inhibiting their effects are discussed. In view of the potential more » for extreme conditions relative to neutron fluxes and energies that can occur in an ADTT, a knowledge of radiation effects is a most important factor. Present information for potential materials selections is summarized. « less
Authors: ; ; ; ;
Publication Date:
OSTI Identifier:50959
Report Number(s):ORNL/TM--12925
ON: DE95009136; TRN: 95:011747
DOE Contract Number:AC05-84OR21400
Resource Type:Technical Report
Data Type:
Resource Relation:Other Information: PBD: Feb 1995
Research Org:Oak Ridge National Lab., TN (United States)
Sponsoring Org:USDOE, Washington, DC (United States)
Country of Publication:United States
Language:English
Subject: 36 MATERIALS SCIENCE; 05 NUCLEAR FUELS; PLUTONIUM; TRANSMUTATION; LEAD; CORROSIVE EFFECTS; LITHIUM FLUORIDES; BERYLLIUM FLUORIDES; MOLTEN SALT FUELED REACTORS; CORROSION RESISTANCE; FISSION PRODUCTS; NEUTRONS; RADIATION EFFECTS