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Recommendation of chemical protective clothing should be based on chemical resistance test data, assessment of the chemical in question, and the time workers are at risk of chemical exposure.
The availability of the ASTM standard test method has increased the amount of permeation data in the literature. By measuring breakthrough time, the method can be used to estimate the maximum protection time from chemical exposure under conditions of continuous contact. The second variable in permeation data is permeation rate, that is, the method can be used to identify protective clothing materials that limit chemical exposure to acceptable skin contact levels.
In this paper materials have been grouped in different classes based on permeation data. Three intervals of breakthrough time and five levels of steady-state permeation rate are proposed. The authors also recommend applying a labeling and classification system to provide information for risk assessment of chemical exposure hazards in protective clothing.
Risk assessment and recommendation of chemical protective clothing materials have to be carried out by a competent person.
risk assessment, chemical exposure, chemical toxicity, permeation data, permeation class, risk information, chemical protective clothing, protective clothing
Researcher, The Royal Institute of Technology, Stockholm,