Wedoany.com Report-Nov. 24, Brazil’s National Nuclear Energy Commission (CNEN) has selected a preferred site for the Centena radioactive waste repository, with construction targeted to start in 2026 and completion planned for 2030. The facility will be Latin America’s first permanent repository for low- and intermediate-level radioactive waste with a half-life of up to 30 years and will also include a technology centre for waste-management research.

A model of how the centre could look

In response to concerns that Angra 1 and Angra 2 might need to cease operation in 2030–2032 due to exhausted on-site storage capacity, CNEN clarified that the Centena project remains on schedule. Following site selection, geophysical studies are underway to support nuclear and environmental licensing. An independent consultancy has been engaged to review documentation and design.

CNEN stated: “If the project starts in 2026, the repository could be completed in 2030, compatible with the 2031/2032 deadline for the storage capacity of the current repositories at the Angra dos Reis Nuclear Power Plant.”

Should any delays occur, Eletronuclear has prepared contingency measures, including reorganisation of existing storage facilities (which requires no new licensing) or construction of an additional interim repository (subject to full licensing). Financing for Centena’s construction and waste transfer will come from the dedicated Decommissioning Fund established for Angra 1 and Angra 2.

Estimated at approximately BRL 130 million (USD 24.2 million), the repository, located in southeast Brazil, is a prerequisite for environmental licensing of both the Angra 3 power reactor and the Brazilian Multipurpose Reactor.

Currently, low- and intermediate-level waste from Brazil’s two operating reactors – Angra 1 and Angra 2, which supply about 3 percent of national electricity – is stored at plant-site facilities or interim repositories. Centena will provide a national, long-term solution for waste generated by nuclear power and radioisotope applications.

Construction of the 1,405 MW Angra 3 pressurised water reactor, originally started in the 1980s, resumed intermittently and is currently awaiting a final decision on completion. The Brazilian Multipurpose Reactor, a national priority, is scheduled for construction from 2026, with operations targeted for 2031.

The timely delivery of Centena will ensure continued safe management of radioactive waste, supporting both existing nuclear generation and planned expansions in Brazil’s nuclear sector.