Brazil produces fuel for indigenous nuclear sub
Brazil has produced its first fuel tablets for the future nuclear-powered submarine Álvaro Alberto
Fuel for the first nuclear-powered submarine (SSN) in the Brazilian Navy has been produced for the first time at the Electronuclear Energy Generation Laboratory (LABGENE) in Sao Paulo, leveraging a partnership between the navy and fuel cycle organisation Nuclear Industries of Brazil (INB).
The Brazilian Navy Technological Center in São Paulo and INB reached an agreement in 2021 for the manufacture of uranium dioxide tablets to use for submarine propulsion. These tablets were produced between August and December 2021 to be integrated with nuclear turbines developed by LABGENE.
‘After production, these inserts will undergo several tests to validate the fuel element design, under nuclear safety aspects, in order to meet the requirements of the licensing process,’ the Brazilian Navy noted in a 4 January statement.
On 25 November 2021, the Brazilian Navy signed an agreement to start building the hull of the future SSN (called Álvaro Alberto).
French shipbuilder Naval Group is providing technical assistance across all aspects of the future SSN except for the nuclear reactor.
Shephard Defence Insight forecasts that Álvaro Alberto will be commissioned in 2034 for an estimated production cost of $2.4 billion.
The nuclear submarine is part of Brazil’s PROSUB project that also includes domestic development and construction of build four diesel-electric Riachuelo-class boats.
Related Programmes in Defence Insight
More from Naval Warfare
-
Kraken’s Royal Navy USV contract signals next step in crewed-uncrewed integration
The UK Royal Navy’s rapid procurement of uncrewed platforms aligns with the force’s strategic shift towards a fleet better equipped to handle modern threats.
-
HMS Anson’s milestone stay in Australia cut short during AUKUS deployment
The Astute-class submarine’s visit to Australia was the first time maintenance activity on a UK Royal Navy nuclear submarine had been carried out in the country.
-
How Operation Epic Fury could reduce US readiness to face China
The offensive against Iran could impact training and maintenance cycles and accelerate the degradation of the US arsenal on top of depleting Washington’s stockpiles.
-
UK Royal Navy explores modular counter-drone capabilities for future hybrid fleet
The UK MoD is scoping out systems to counter the growing threat of uncrewed aerial systems, with a focus on low-cost modularity and speed to field.
-
US Pentagon claims to have severely damaged Iranian capabilities, promises to increase attacks
US military authorities claim to have sunk 20 Iranian vessels and destroyed Tehran’s Air Force, with the Pentagon making plans to send additional assets to the region.
-
Greece’s newly commissioned FDI frigate deployed to Cyprus
The recent naval modernisation efforts by the Hellenic Navy have been bolstered by the acquisition of advanced Naval Group frigates, the first of which was delivered in December 2025 and is now playing a crucial role in the latest Middle East conflict.