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.
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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.