skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Plutonium dissolution process

Abstract

A two-step process for dissolving plutonium metal, which two steps can be carried out sequentially or simultaneously. Plutonium metal is exposed to a first mixture containing approximately 1.0M-1.67M sulfamic acid and 0.0025M-0.1M fluoride, the mixture having been heated to a temperature between 45.degree. C. and 70.degree. C. The mixture will dissolve a first portion of the plutonium metal but leave a portion of the plutonium in an oxide residue. Then, a mineral acid and additional fluoride are added to dissolve the residue. Alteratively, nitric acid in a concentration between approximately 0.05M and 0.067M is added to the first mixture to dissolve the residue as it is produced. Hydrogen released during the dissolution process is diluted with nitrogen.

Inventors:
 [1];  [2];  [2];  [2];  [3]
  1. Oak Park, IL
  2. Aiken, SC
  3. North Augusta, SC
Issue Date:
Research Org.:
WESTINGHOUSE SAVANNAH RIVER CO
OSTI Identifier:
870242
Patent Number(s):
5482688
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
plutonium; dissolution; process; two-step; dissolving; metal; steps; carried; sequentially; simultaneously; exposed; mixture; containing; approximately; 0m-1; 67m; sulfamic; acid; 0025m-0; 1m; fluoride; heated; temperature; 45; degree; 70; dissolve; portion; leave; oxide; residue; mineral; additional; added; alteratively; nitric; concentration; 05m; 067m; produced; hydrogen; released; diluted; nitrogen; mineral acid; sulfamic acid; dissolution process; dissolving plutonium; mixture containing; nitric acid; plutonium metal; two-step process; step process; solution process; containing approximately; /423/

Citation Formats

Vest, Michael A, Fink, Samuel D, Karraker, David G, Moore, Edwin N, and Holcomb, H Perry. Plutonium dissolution process. United States: N. p., 1996. Web.
Vest, Michael A, Fink, Samuel D, Karraker, David G, Moore, Edwin N, & Holcomb, H Perry. Plutonium dissolution process. United States.
Vest, Michael A, Fink, Samuel D, Karraker, David G, Moore, Edwin N, and Holcomb, H Perry. Mon . "Plutonium dissolution process". United States. https://www.osti.gov/servlets/purl/870242.
@article{osti_870242,
title = {Plutonium dissolution process},
author = {Vest, Michael A and Fink, Samuel D and Karraker, David G and Moore, Edwin N and Holcomb, H Perry},
abstractNote = {A two-step process for dissolving plutonium metal, which two steps can be carried out sequentially or simultaneously. Plutonium metal is exposed to a first mixture containing approximately 1.0M-1.67M sulfamic acid and 0.0025M-0.1M fluoride, the mixture having been heated to a temperature between 45.degree. C. and 70.degree. C. The mixture will dissolve a first portion of the plutonium metal but leave a portion of the plutonium in an oxide residue. Then, a mineral acid and additional fluoride are added to dissolve the residue. Alteratively, nitric acid in a concentration between approximately 0.05M and 0.067M is added to the first mixture to dissolve the residue as it is produced. Hydrogen released during the dissolution process is diluted with nitrogen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

Patent:

Save / Share: