Industrial and Naturally Occurring Radioactive Materials
Industrial and Naturally Occurring Radioactive Materials
My research on NORM focuses on evaluating radiological hazards within heavy industry, specifically in oil & gas exploration, construction materials, and industrial residues. Currently, I use gamma spectrometry and computational simulations to quantify natural radioactivity and ensure compliance with international safety standards (ICRP/UNSCEAR). Beyond assessments, my active interest is partnering with the industrial sector to develop new technologies and/or solutions for industry.
Building Materials & Construction Quality Control
Implementation of the Brazilian Hazard Index (IBRA): Development and validation of a new radiological hazard index specifically tailored to the Brazilian construction market. This index provides a more accurate relationship with effective dose than traditional European models (https://doi.org/10.1016/j.radphyschem.2024.112476).
Gamma spectrometry as a QA tool: Establishing the use of gamma spectrometry for non-destructive quality testing. This research identified "radiological fingerprints" to detect compositional anomalies in mortars, bricks, and sands, ensuring they meet ISO and ABNT NBR standards. [In peer review process]
Thermophysical characterization & radiogenic heat (RHP): An interdisciplinary study linking nuclear physics with building physics. We quantified how the decay of ²²⁶Ra, ²³²Th, and ⁴⁰K generates heat (Radioactive Heat Production) within walls, affecting the thermal footprint of dwellings [In peer review process]
Radiometric mapping of structural inputs: Detailed assessment of radiological hazards in cement (https://doi.org/10.1016/j.apradiso.2024.111266), sands (https://doi.org/10.1016/j.apradiso.2023.111157), and crushed stone (https://doi.org/10.1016/j.apradiso.2024.111366), creating a database for the State of Rio de Janeiro.
Building finishes & coatings: The first study to quantify natural radionuclides in paints, varnishes, sealers, and enamels, highlighting their role as potential radiation diluters or contributors in indoor environments (https://doi.org/10.1016/j.radphyschem.2025.112609).
Ornamental stones & radon exhalation: Comparative analysis between granites and marbles, focusing on radon transport rates and exhalation flow in residential finishes (https://doi.org/10.1016/j.apradiso.2023.111020).
Industrial NORM & Environmental Impact
Integrated risk management model: Development of a management matrix that considers effective dose, usage frequency, and material lifespan. This model introduces a cost-benefit approach (ALARA) to justify the replacement of materials, such as substituting river sand with glass sand to reduce radiological risk.
Automotive industry & petroleum derivatives: Evaluation of natural radioactivity in automotive lubricants sold in Brazil. Using HPGe spectrometry, this research confirmed that refined engine oils pose no significant radiological risk to consumers or handlers (10.1016/j.jrras.2026.102347).
Oil and Gas exploration: Analysis of radionuclides in industrial residues, including oil sludge, drilling fluids, and subsea pipeline incrustations (TENORM), to mitigate environmental impacts.
Skin absorption & consumer products: Advanced simulation using Monte Carlo (MCNP 6.3) to estimate dose rates from personal care products and cleaning materials that expose the skin by absorption (https://doi.org/10.1016/j.radphyschem.2024.112756).
Soil Radioactivity: Evaluation of background levels and potential contamination in mining and industrial areas to support land use and safety policies.
Figure 1. SEM image of cement particles used in the thermophysical characterization and quality control study.
Figure 2. Subsea pipeline fouling and NORM samples sealed for secular equilibrium analysis.
Figure 3. SEM image of sand particle