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Checklist Model to Improve Work Practices in Small-Scale Demolition Operations with Silica Dust Exposures
Department of Environmental Health, College of Medicine, University of Cincinnati, 3223 Eden Ave., Kettering Laboratory, Cincinnati, OH 45267, USA
Center for Industrial Studies, Safety and Environment, Eduardo Mondlane University, P.O. Box 257, Maputo, Mozambique
Education and Information Division, National Institute for Occupational Safety and Health (NIOSH), CDC, 4676 Columbia Parkway, Cincinnati, OH 45226, USA
* Author to whom correspondence should be addressed.
Received: 28 September 2011; in revised form: 17 January 2012 / Accepted: 18 January 2012 / Published: 24 January 2012
Abstract: 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.
Keywords: work practices; construction sector; dust exposure controls; Mozambique
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Muianga, C.; Rice, C.; Lentz, T.; Lockey, J.; Niemeier, R.; Succop, P. Checklist Model to Improve Work Practices in Small-Scale Demolition Operations with Silica Dust Exposures. Int. J. Environ. Res. Public Health 2012, 9, 343-361.
Muianga C, Rice C, Lentz T, Lockey J, Niemeier R, Succop P. Checklist Model to Improve Work Practices in Small-Scale Demolition Operations with Silica Dust Exposures. International Journal of Environmental Research and Public Health. 2012; 9(2):343-361.
Muianga, Custodio; Rice, Carol; Lentz, Thomas; Lockey, James; Niemeier, Richard; Succop, Paul. 2012. "Checklist Model to Improve Work Practices in Small-Scale Demolition Operations with Silica Dust Exposures." Int. J. Environ. Res. Public Health 9, no. 2: 343-361.