Determination of “safe” and “critical” nanoparticles exposure to welders in a workshop

R. M. Miranda, João F. Gomes

Research output: Contribution to journalArticle

Abstract

The present study examined consequences of “safe” versus “critical” exposure to nanoparticles (NP) released during welding operations. With this aim in mind, a set of measurements regarding NP emissions was undertaken in a workshop during welding by metal active gas of carbon steel using different mixtures of argon (Ar) and carbon dioxide (CO2) as well as different process parameters which might influence emission of (NP). If these measurements were conducted in several locations away from the welding sources, the graphical representation of the obtained observations with time enabled definition of “safe” and “critical” regions within a welding workshop in terms of welder’s exposure. This information may be combined with the results of risk analysis derived by control banding and helps to categorize the sites where regulatory measures such as operation containment or dedicated exhaust ventilation need to be implemented.

Original languageEnglish
Pages (from-to)767-775
Number of pages9
JournalJournal of Toxicology and Environmental Health - Part A: Current Issues
Volume80
Issue number13-15
DOIs
Publication statusPublished - 3 Aug 2017

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