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

9 th Edition of National Nuclear Industry Meeting Nuclear technology continues to demonstrate its important role in providing clean and reliable electricity as well solutions for medicine, food production, science and industry applications around the world, becoming one of most important alternatives to guarantee continuous improvement for the quality of life and to establish a higher decarbonized energy matrix bringing health for our planet. All climate organizations and governments strategic energy planning sectors have been changing their minds and pointed to the nuclear sector as part of building a green future and sustainable economy worldwide.

On behalf of the IX Meeting on Nuclear Industry, it is a pleasure to invite all scientists, industry experts and delegates, professors, young researchers and students from all over the world to attend the 12th edition of International Nuclear Atlantic Conference (INAC 2026) from Aug 24 to 28th, 2026, where this year the main theme of the Conference will be “Nuclear Energy: Atoms for a green Future”.

The 9th Meeting on the Nuclear Industry will focus on the pursuit and achievement of INAC's major challenges and objectives through keynote speakers, roundtables with industry experts, technical presentations, and poster sessions. This is an unique opportunity for interested individuals in the nuclear industry to participate, share their knowledge, meet and network with both experienced and young professionals as well as to learn more about the latest trends on nuclear technology, plant operations, new plant status, licensing challenges, and much more. We invite all to be part of this exciting international event. Be part of it!

Paper submissions are welcome and they will be distributed within the following areas:

I01. Energy Generation Sector, Advances in New Nuclear Power Plants Deployment and Technology Innovations & trends

I02. Planning, Economy and Financial Models Strategies to afford the New Nuclear Enterprises I03. Nuclear Fuel Cycle Industry and Uranium Market.

I04. Social Impact Aspects, Public Awareness and Knowledge Management trends and applications to support the future of nuclear technologies programs.

I05. Nuclear Safety & Security, non-Proliferation, Safeguards and Nuclear Forensics, Radioprotection and Safety Culture I06. Human Resources and Professional Skills new Role for Development of the Future of Nuclear Technologies Programs.

I07. New trends and Advances for SMR’s and Microreactors’ deployment strategies and applications

João da Silva Gonçalves
IX ENIN CHAIR

Edson Kuramoto
IX 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!