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Checklist model to improve work practices in small-scale demolition operations with silica dust exposures.
Muianga C; Rice C; Lentz T; Lockey J; Niemeier R; Succop P
Int J Environ Res Public Health 2012 Feb; 9(2):343-361
A systematic approach was developed to review, revise and adapt existing exposure control guidance used in developed countries for use in developing countries. One-page employee and multiple-page supervisor guidance sheets were adapted from existing documents using a logic framework and workers were trained to use the information to improve work practices. Interactive, hands-on training was delivered to 26 workers at five small-scale demolition projects in Maputo City, Mozambique, and evaluated. A pre-and-post walkthrough survey used by trained observers documented work practice changes. Worker feedback indicated that the training was effective and useful. Workers acquired knowledge (84% increase, p < 0.01) and applied the work practice guidance. The difference of proportions between use of work practice components before and after the intervention was statistically significant (p < 0.05). Changes in work practices following training included preplanning, use of wet methods and natural ventilation and end-of-task review. Respirable dust measurements indicated a reduction in exposure following training. Consistency in observer ratings and observations support the reliability and validity of the instruments. This approach demonstrated the short-term benefit of training in changing work practices; follow-up is required to determine the long-term impact on changes in work practices, and to evaluate the need for refresher training.
Small-businesses; Dusts; Dust-exposure; Dust-control; Silica-dusts; Demolition-industry; Control-technology; Work-practices; Training; Construction-industry; Construction-workers; Author Keywords: work practices; construction sector; dust exposure controls; Mozambique
Custodio Muianga, Department of Environmental Health, College of Medicine, University of Cincinnati, 3223 Eden Ave., Kettering Laboratory, Cincinnati, OH 45267, USA
Issue of Publication
International Journal of Environmental Research and Public Health
University of Cincinnati
Page last reviewed: December 4, 2020Content source: National Institute for Occupational Safety and Health Education and Information Division