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Title: Process for reducing beta activity in uranium

Abstract

This invention is a method for lowering the beta radiation hazards associated with the casting of uranium. The method reduces the beta radiation emitted from the as-cast surfaces of uranium ingots. The method also reduces the amount of beta radiation emitters retained on the interiors of the crucibles that have been used to melt the uranium charges and which undergone cleaning in a remote handling facility. The lowering of the radioactivity is done by scavenging the beta emitters from the molten uranium with a molten mixture containing the fluorides of magnesium and calcium. The method provides a means of collection and disposal of the beta emitters in a manner that reduces radiation exposure to operating personnel in the work area where the ingots are cast and processed. 5 tabs.

Inventors:
; ;
Issue Date:
Research Org.:
NLO, Inc., Cincinnati, OH (USA)
OSTI Identifier:
5535756
Application Number:
ON: DE86013803
Assignee:
Dept. of Energy TIC; ERA-11-004809; EDB-86-136034
DOE Contract Number:  
AC05-76OR01156
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CASTING; HEALTH HAZARDS; URANIUM; CALCIUM FLUORIDES; DAUGHTER PRODUCTS; MAGNESIUM FLUORIDES; SEPARATION PROCESSES; THORIUM 234; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ACTINIDES; ALKALINE EARTH METAL COMPOUNDS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CALCIUM COMPOUNDS; CALCIUM HALIDES; DAYS LIVING RADIOISOTOPES; ELEMENTS; EVEN-EVEN NUCLEI; FABRICATION; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HAZARDS; HEAVY NUCLEI; ISOTOPES; MAGNESIUM COMPOUNDS; METALS; NUCLEI; RADIOISOTOPES; THORIUM ISOTOPES; 360101* - Metals & Alloys- Preparation & Fabrication

Citation Formats

Briggs, G.G., Kato, T.R., and Schonegg, E. Process for reducing beta activity in uranium. United States: N. p., 1985. Web.
Briggs, G.G., Kato, T.R., & Schonegg, E. Process for reducing beta activity in uranium. United States.
Briggs, G.G., Kato, T.R., and Schonegg, E. Thu . "Process for reducing beta activity in uranium". United States.
@article{osti_5535756,
title = {Process for reducing beta activity in uranium},
author = {Briggs, G.G. and Kato, T.R. and Schonegg, E.},
abstractNote = {This invention is a method for lowering the beta radiation hazards associated with the casting of uranium. The method reduces the beta radiation emitted from the as-cast surfaces of uranium ingots. The method also reduces the amount of beta radiation emitters retained on the interiors of the crucibles that have been used to melt the uranium charges and which undergone cleaning in a remote handling facility. The lowering of the radioactivity is done by scavenging the beta emitters from the molten uranium with a molten mixture containing the fluorides of magnesium and calcium. The method provides a means of collection and disposal of the beta emitters in a manner that reduces radiation exposure to operating personnel in the work area where the ingots are cast and processed. 5 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {4}
}