Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1985-04-11
1986-10-07
Guynn, Herbert B.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 841R, C22B 6002
Patent
active
H00001376
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 have 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.
REFERENCES:
patent: 2754347 (1956-07-01), Wroughton et al.
patent: 2758023 (1956-08-01), Bareis
patent: 2766110 (1956-10-01), Weister
patent: 2840464 (1958-06-01), Wiswall
patent: 2918366 (1959-12-01), Buyers et al.
patent: 3000726 (1961-09-01), Spedding et al.
Travesi, et al. "The Composition of the Solids in the Smoke Released in the Calciothermic Process for the Manufacture of Uranium", in Proceedings of the Second United National International Conference on the Peaceful Uses of Atomic Energy, vol. 4, United Nations Publication, Geneva, 1958, pp. 93-101.
Briggs Gifford G.
Kato Takeo R.
Schonegg Edward
Guynn Herbert B.
Hamel Stephen D.
Hightower Judson R.
Lovingood Katherine P.
The United States of America as represented by the United States
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