Modeling of occupational exposure to accidentally released manufactured nanomaterials in a production facility and calculation of internal doses by inhalation.
Occupational exposure to manufactured nanomaterials (MNMs) and its potential health impacts are of scientific and practical interest, as previous epidemiological studies associate exposure to nanoparticles with health effects, including increased morbidity of the respiratory and the circulatory system.



To estimate the occupational exposure and effective internal doses in a real production facility of TiO2MNMs during hypothetical scenarios of accidental release.



Commercial software for geometry and mesh generation, as well as fluid flow and particle dispersion calculation, were used to estimate occupational exposure to MNMs. The results were introduced to in-house software to calculate internal doses in the human respiratory tract by inhalation.



Depending on the accidental scenario, different areas of the production facility were affected by the released MNMs, with a higher dose exposure among individuals closer to the particles source.



Granted that the study of the accidental release of particles can only be performed by chance, this numerical approach provides valuable information regarding occupational exposure and contributes to better protection of personnel. The methodology can be used to identify occupational settings where the exposure to MNMs would be high during accidents, providing insight to health and safety officials.
a Thermal Hydraulics & Multiphase Flow Laboratory , INRASTES, National Centre for Scientific Research "Demokritos" , Agia Paraskevi , Greece.
Marika
0000-0002-8722-2495
M
Pilou
b Industry and Transport Division , Tecnalia Research and Innovation , Miñano , Spain.
Celina
C
Vaquero-Moralejo
c Navarrean Nanoproduct Technology, TECNAN , Los Arcos , Spain.
María
M
Jaén
b Industry and Transport Division , Tecnalia Research and Innovation , Miñano , Spain.
Jesús
J
Lopez De Ipiña Peña
a Thermal Hydraulics & Multiphase Flow Laboratory , INRASTES, National Centre for Scientific Research "Demokritos" , Agia Paraskevi , Greece.
Panagiotis
P
Neofytou
a Thermal Hydraulics & Multiphase Flow Laboratory , INRASTES, National Centre for Scientific Research "Demokritos" , Agia Paraskevi , Greece.
Christos
0000-0002-2708-6508
C
Housiadas
D000395:Air Pollutants, Occupational / Q000032:analysis*; D055884:Chemical Hazard Release; D004784:Environmental Monitoring; D006801:Humans; D019570:Inhalation Exposure / Q000032:analysis*; D008168:Lung / Q000378:metabolism; D008962:Models, Theoretical; D049329:Nanostructures / Q000032:analysis*; D016273:Occupational Exposure / Q000032:analysis*
D000395:Air Pollutants, Occupational
Accidental release; CFD modeling; Internal doses; Manufactured nanomaterials; Occupational exposure; Particles dispersion
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