INAC 2026 – International Nuclear Atlantic Conference

The International Nuclear Atlantic Conference (INAC 2026) will take place from August 24 to 28, 2026, at the Escola de Guerra Naval (EGN), in Rio de Janeiro, Brazil. Organized by the Brazilian Nuclear Energy Association (ABEN), INAC is recognized as the largest and most important event in the nuclear sector in Latin America, bringing together professionals from academia, industry, government, and research institutions from Brazil and abroad.

The first edition of the International Nuclear Atlantic Conference (INAC) was held in 2001. Since then, the conference has been organized every two years by the Brazilian Nuclear Energy Association (ABEN), becoming the largest and most important nuclear event in Latin America. For more than 25 years, INAC has served as a leading forum for technical exchange, professional networking, and institutional collaboration in the nuclear sector.

Under the theme “Nuclear Energy: Atoms for a Green Future,” INAC 2026 will provide an environment for the exchange of knowledge, technical discussions, and the strengthening of partnerships in areas related to nuclear energy and its applications in energy generation, health, agriculture, industry, environment, and technological innovation. The conference also contributes to the development of human resources and to the advancement of safe and sustainable nuclear technologies.

The technical program includes a set of traditional and well-established meetings that reflect the diversity of the nuclear field:

• the XXIV Meeting on Reactor Physics and Thermal Hydraulics (ENFIR)

• the XVII Meeting on Nuclear Applications (ENAN)

• the IX Meeting on Nuclear Industry (ENIN)

• the XI Junior Poster Technical Sessions, dedicated to undergraduate students

• the XII ExpoINAC, the technical and commercial exhibition of the conference

In addition, INAC 2026 will host the Nuclear Ambassadors Award, an initiative promoted by ABEN to encourage communication and public engagement on the benefits and peaceful uses of nuclear technology. The award recognizes students, professionals, and educators who contribute to increasing public understanding of nuclear science and its role in sustainable development.

INAC has established itself as an important platform for knowledge exchange, professional development, and collaboration across the nuclear community. The conference continues to play a key role in supporting innovation, strengthening cooperation, and promoting the safe and responsible use of nuclear technology.

We look forward to welcoming participants to Rio de Janeiro for an engaging and productive event.

Maria de Lourdes Moreira
Coordinator – INAC 2026

XXIV ENFIR

The XXIV ENFIR, a bi-annual gathering of the nuclear reactor community in Brazil, is set to take place in 2026. We are excited to announce that this event will be hosted alongside the International Nuclear Atlantic Conference (INAC2026) in the vibrant city of Rio de Janeiro from August 24 to 28, 2026.

This traditional meeting will bring together leading researchers and nuclear professionals from both national and international institutions. The program promises to be rich in compelling technical discussions, covering a diverse array of topics, from nuclear reactor physics to innovative reactor technologies.

For the XXIV ENFIR 2026 edition, the technical program will feature engaging roundtable discussions, enlightening lectures, and insightful plenary sessions presented by renowned national and international experts in the field. Additionally, there will be opportunities for both oral and poster presentations of contributed papers.

Participants are kindly encouraged to submit extended abstracts of their original and unpublished research, contributing to the advancement of knowledge in the following areas

R01 Nuclear Reactor Physics, Advanced Nuclear Reactors

R02 Nuclear Reactor Thermal Hydraulics, Reactor Safety Analysis, Nuclear Reactor Licensing and Regulation

R03 Applied Mathematics and Computation, Computational Fluid Dynamics

R04 Artificial Intelligence and Virtual Reality, Nuclear Reactor Instrumentation and Control, Man-Machine Interface

R05 Structural Mechanics, Nuclear Reactor Fuel Fabrication and Design, Fuel Cycle Management and Services

R06 Nuclear Power Plant Viability, Design, Construction, and Operation, Environmental Impact Applied to Nuclear Reactors and Fuel Cycle

R07 Nuclear Security

Full papers of the accepted extended summaries presented at the meeting are welcome for consideration for publication in a special issue of the Brazilian Journal of Radiation Science (BJRS) dedicated to INAC 2026, provided they meet BJRS review standards. 

Join us at XXIV ENFIR 2026 as we gather to exchange ideas, share knowledge, and collaborate on the forefront of nuclear reactor research.

Stay tuned for further details on the conference, registration, and submission guidelines. We look forward to your participation in this exciting event!

Frederico Antonio Genez - XXIV ENFIR CO-CHAIR

Claubia Pereira - XXIV ENFIR CHAIR

A tecnologia nuclear continua a demonstrar o seu importante papel no fornecimento de eletricidade limpa e confiável em todo o mundo, tornando-se uma das alternativas mais importantes para garantir a melhoria contínua da qualidade de vida e estabelecer uma matriz energética cada dia mais descarbonizada  em nosso Planeta.

Em nome do VIII Encontro da  Indústria Nuclear, é um prazer convidar todos os cientistas, especialistas e executivos  da indústria, professores, jovens pesquisadores  e estudantes de todo o mundo para participarem na Conferência Internacional Nuclear do Atlântico  2024 (INAC 2024),  de 6 a 10 de maio  de 2024.

O ENIN realiza-se pela 8ª vez em conjunto com o INAC e nesta edição  o tema  da Conferência será “Energia Nuclear: Garantir Energia, Saúde e Alimentação”.

O VIII   Encontro da Indústria Nuclear centrar-se-á nos gigantescos desafios do setor nuclear por meio de   palestrantes , mesas redondas com especialistas da indústria, apresentações técnicas e sessões de posters.

Esta é uma oportunidade única para interessados na indústria nuclear participarem, compartilharem os seus conhecimentos, conhecerem e estabelecerem contatos com profissionais jovens e experientes, bem como aprenderem mais sobre as últimas tendências em tecnologia nuclear, operações de centrais, regulamento  de novas centrais, licenciamento, desafios e muito mais. Convidamos todos a fazer parte deste emocionante evento internacional.

Os participantes são gentilmente incentivados a enviar resumos estendidos de suas pesquisas originais e inéditas, contribuindo para o avanço do conhecimento nas seguintes áreas:

Faça parte disso!

As submissões de artigos são bem-vindas e serão distribuídas nas seguintes áreas:
I01.       Setor de geração de energia, avanços na implantação de novas usinas nucleares e inovações e tendências tecnológicas
I02.       Estratégias de Operação de Usinas, custos e fatores de capacidade na Geração Nuclear de Grandes Utilidades
I03.       Mercado de Urânio e Indústria do Ciclo do Combustível Nuclear
I04.       Conscientização pública, sustentabilidade e impacto social das tecnologias nucleares
I05.       Segurança e proteção nuclear, não proliferação, salvaguardas e perícia nuclear, radioproteção e cultura de segurança
I06.       Recursos Humanos e Desenvolvimento Profissional

Os trabalhos completos dos resumos estendidos apresentados no evento serão bem-vindos para uma apreciação e eventual publicação em uma edição especial do Brazilian Journal of Radiation Science (BJRS), dedicada ao INAC 2024, desde que atendam aos padrões de revisão da revista técnica. 

João da Silva Gonçalves
VIII ENIN  Chair

Marcelo Gomes da Silva
VIII ENIN Co-Chair

The National Undergraduate Research Program aims to inspire and empower undergraduate students to enter the world of scientific research, actively contributing to the creation of knowledge under the guidance of experienced researchers.

More than supervisors, these researchers serve as mentors and educators, directly strengthening teaching and research in higher education. The program seeks to spark scientific vocations, identify emerging talent, and prepare participants for graduate studies—driving the renewal and expansion of the nation’s workforce in the nuclear sector.

The 1st INAC Undergraduate Research Exhibition was held in person during INAC 2005, in Santos. The event was a landmark success, fostering meaningful exchanges between students and researchers while showcasing the latest advances presented at Brazil’s largest nuclear conference.

In this edition, the XI INAC Undergraduate Research Exhibition (XI JPoster) will be held in person during INAC 2026.

Submissions must fall within the specific areas defined by the events: ENFIR, ENAN, ENIN.

Submission is exclusively open to undergraduate students who are authors of the work, with mandatory co-authorship by their academic advisors.

Join us and be part of the future of nuclear science in Brazil!

Entre em contato conosco 

SECRETARIA: secretariainac@inac2024.com.br
XI INAC: Chair: Maria de Lourdes Moreira - inac@inac2024.com.br
XXIII ENFIR: Chair: Frederico Antonio Genezini – enfir@inac2024.com.br
XVI ENAN: Chair: Carmen Cecília Bueno – enan@inac2024.com.br
VIII ENIN: Chair: João da Silva Gonçalves – enin@inac2024.com.br
X JUNIOR POSTER: Chair: Graciete S. de Andrade e Silva - jposter@inac2024.com.br
XI EXPOINAC:Chair: Katia Lanes– expoinac@inac2024.com.br
PRÊMIO EMBAIXADORES NUCLEARES 2024: Olga Y. Mafra – ambassadors@inac2024.com.br
PROJECT MEDIA: eventos@projectmedia.com.br