Review of Experience Gained in Fabricating Nuclear Grade Uranium and Thorium Compounds and Their Analytical Quality Control at the Instituto de Energia Atomica, Sao Paulo, Brazil

摘要

The main activities developed at 'Instituto de Energia Atomica' Sao Paulo, Brazil, on the recovery of uranium from ores, the purification of uranium and thorium raw concentrates and their transformation in nuclear grade compounds, are reviewed. The design and assembly of pilot facilities for ammonium diuranate (ADV) uranium tetrafluoride, uranium trioxide, uranium oxide microspheres, uranyl nitrate denitration, uranium hexafluoride and thorium compounds are discussed. The establishment of analytical procedures are emphasized. (Atomindex citation 09:388772)