Growing demand for seismic safety is driving dynamic testing at power plants across Brazil, a move essential for energy resilience and meeting new regulatory requirements.
Brazil’s energy infrastructure, a fundamental pillar for the advancement of clean and sustainable energy, is under a new lens of evaluation. Despite a history of low-magnitude earthquakes, the country has been recording continuous, lower-intensity seismic activity in various regions, such as the Southeast and Northeast, highlighting the need for greater preparedness in strategic power generation facilities. This reality, coupled with stricter insurance and regulatory standards, has led companies in the sector to actively seek seismic certification for their equipment.
The focus lies on the ability of hydroelectric, nuclear, and thermal power plants to withstand structural and operational failures caused by vibrations and mechanical impacts. Ensuring that these facilities remain operational even under stressful conditions is vital for the continuity of energy supply to the National Interconnected System (SIN) and for Brazil’s energy security.
Strengthening the Resilience of the Electrical Grid
Data from the Brazilian Seismographic Network and the Federal University of Rio Grande do Norte (UFRN) reveals a scenario of constant seismic activity in 2026. In the Southeast alone, there were five occurrences in Saquarema (RJ), while the Northeast recorded 19 tremors, in addition to other isolated events. This landscape reinforces the urgency of ensuring the integrity of essential electrical and mechanical components.
To respond to this growing demand, the electric sector has been investing in high-precision dynamic testing. These assays, carried out in controlled laboratory environments, simulate the effects of an earthquake using electrodynamic shakers, which subject equipment to vibrations equivalent to those of a real seismic event.
The Role of Cepel in Asset Qualification
The Electric Energy Research Center (Cepel) stands out as one of Brazil’s centers of excellence for this qualification. In its Mechatronics and Structural Dynamics Laboratory, structures and components weighing up to 1,200 kg are exposed to extreme dynamic conditions. Certification is granted only if the asset maintains its performance and structural integrity before, during, and after the simulation.
Adopting these practices goes beyond regulatory compliance, positioning structural safety as a pillar of sustainability and asset governance. Rodrigo Regis, Business Director at Cepel, emphasizes the preventive vision:
Seismic safety must be treated as part of a broader energy sector resilience agenda. Even in a country with a low incidence of major earthquakes, strategic facilities must be prepared for extreme scenarios, because the continuity of energy supply depends on the ability to anticipate risks, qualify critical assets, and make decisions based on technical evidence.
Operational Integrity and Failure Prevention
The rigorous simulation of mechanical stress on electromechanical equipment, control systems, and protection panels aims primarily to prevent the propagation of failures in plants that support the stability of the electrical grid. These dynamic tests ensure that emergency and protection systems remain functional even under adverse ground conditions.
Carlos Frederico Trotta Matt, a researcher at Cepel, highlights the gravity of technical responsibility:
This type of testing is important to ensure that the plant continues to protect people and operations even in the most adverse scenario possible. Each piece of equipment that goes through the laboratory carries this responsibility, and that is what makes the work so rigorous from start to finish. It is not just about meeting a regulatory requirement, but about ensuring that, in a critical moment, everything functions exactly as it should. It is this commitment that guides every step of our work in the laboratory.
The increasing search for specialized laboratory diagnostics and qualifications in the country reflects a global trend. The evolution of compliance standards and the greater rigor in securing insurance and financing for large infrastructure projects will continue to drive demand for these certifications, reinforcing the resilience and security of the power generation sector.
