An Innovative Approach to Respiratory Hazard Control

This paper describes a new approach for controlling inhalation exposure to chemical agents in the workplace using respiratory protective devices (RPDs), where such a risk remains after appropriate controls at source have been applied. It builds on the “risk banding” approach (COSHH Essentials) which has already been introduced in the UK for helping to control exposure to chemical agents at source. Rather than relying on knowledge or understanding of occupational exposure levels (OELs) for assessing the potential for harm, and deciding the type of control and RPD required, this approach uses Hazard Risk Phrases (R-phrases), combined with potential for exposure based on the amount of substance used, and its dustiness / volatility. The R-phrase classification of hazardous substances is already well-established in Europe, and may in the future be adopted, with slight modification, as a Globally Harmonized System for classification and labeling of hazardous substances. Proposals in the paper enable the user to identify the types of RPD capable of providing the right level of protection, and to begin selecting a suitable design for their application and wearer. This whole process is carried out using a formatted questionnaire – RPD Selector – enabling the user to provide the information necessary for correct RPD selection to their supplier.