Evolving differences, in Brazilian regulatory framework from the time Angra I was designed, in the beginning of the sixties, to the time of license evaluation, in the late seventies, resulted in the unacceptability of the original waste solidification system. The end products could not reach the necessary characteristics required for transport and storage and a redesign was necessary to improve the cementation process. In the case of Angra II, which uses a bituminisation system to solidify its low and intermediate level liquid wastes, some minor adjustments had to be done in the process and a new bitumen specification had to be developed to select a Brazilian material so that the system could perform adequately and meet the national requirements for safe transportation and storage.
- Nuclear Engineering Division
Design and Process Improvements on the Waste Treatment of Angra I and Angra II Power Plants in Brazil
de Tello, CCO, & Barroso, ACDO. "Design and Process Improvements on the Waste Treatment of Angra I and Angra II Power Plants in Brazil." Proceedings of the 10th International Conference on Nuclear Engineering. 10th International Conference on Nuclear Engineering, Volume 4. Arlington, Virginia, USA. April 14–18, 2002. pp. 305-310. ASME. https://doi.org/10.1115/ICONE10-22303
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