Occupational exposure to nanoparticles originating from welding – case studies from the Czech Republic

• Authors: Filip Berger , Šárka Bernatíková , Lucie Kocůrková , Radka Přichystalová , Lenka Schreiberová

Abstracts

EN

BackgroundNanomaterials are virtually ubiquitous as they are created by both natural processes and human activities. The amount of occupational exposure to unintentionally released nanoparticles can, therefore, be substantial. The aim of the study was to determine the concentrations of incidental nanoparticles that workers can be exposed to during welding operations and to assess related health risks. The specific focus on welding operations was determined based on the fact that other case studies on the manufacturing industry confirm significant exposure to incidental nanoparticles during welding. In the Czech Republic, 92% of all industrial workers are employed in the manufacturing industry, where welding operations are amply represented.Material and MethodsThe particle number concentrations of particles in the size range of 20–1000 nm and particle mass concentrations of inhalable and PM₁ fractions were determined via measurements carried out at 15-minute intervals for each welding operation by static sampling in close proximity to the worker. Measurements were obtained using the following instruments: NanoScan SMPS 3910, Optical Particle Sizer OPS 3330, P-TRAK 8525 and DustTrak DRX 8534. The assessed operations were manual arc welding and automatic welding.ResultsThe observed average particle number concentrations for electric arc welders ranged 84×10³–176×10³ #/cm³, for welding machine operators 96×10³–147×10³ #/cm³, and for a welding locksmith the obtained average concentration was 179×10³ #/cm³. The determined average mass concentration of PM₁ particles ranged 0.45–1.4 mg/m³.ConclusionsBased on the conducted measurements, it was confirmed that there is a significant number of incidental nanoparticles released during welding operations in the manufacturing industry as a part of production and processing of metal products. The recommended occupational exposure limits for nanoparticle number concentrations were exceeded approximately 4–8 times for all assessed welding operations. The use of local exhaust ventilation in conjunction with personal protective equipment, including FFP2 or FFP3 particle filters, for welding is, therefore, recommended. Med Pr. 2021;72(3):219–30

Keywords

EN

aerosol; nanomaterials; nanoparticles; occupational exposure; occupational exposure limit; welding

• Publisher: Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
• Journal: Medycyna Pracy
• Year: 2021
• Volume: 72
• Issue: 3
• Pages: 219-230

Dates

published

2021

Contributors

author

Filip Berger

• VSB – Technical University of Ostrava, Ostrava, Czech Republic (Faculty of Safety Engineering)

author

Šárka Bernatíková

• VSB – Technical University of Ostrava, Ostrava, Czech Republic (Faculty of Safety Engineering)

author

Lucie Kocůrková

• VSB – Technical University of Ostrava, Ostrava, Czech Republic (Faculty of Safety Engineering)

author

Radka Přichystalová

• VSB – Technical University of Ostrava, Ostrava, Czech Republic (Faculty of Safety Engineering)

author

Lenka Schreiberová

• VSB – Technical University of Ostrava, Ostrava, Czech Republic (Faculty of Safety Engineering)

Identifiers

DOI

10.13075/mp.5893.01058

Biblioteka Nauki

2081915