title: Checklist model to improve work practices in small-scale demolition operations with silica dust exposures.
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.
authors.affiliation: Department of Environmental Health, College of Medicine University of Cincinnati, 3223 Eden Ave., Kettering Laboratory, Cincinnati, OH 45267, USA. custodio.muianga@gmail.com
authors.forename: Custodio
authors.initials: C
authors.lastname: Muianga
authors.forename: Carol
authors.initials: C
authors.lastname: Rice
authors.forename: Thomas
authors.initials: T
authors.lastname: Lentz
authors.forename: James
authors.initials: J
authors.lastname: Lockey
authors.forename: Richard
authors.initials: R
authors.lastname: Niemeier
authors.forename: Paul
authors.initials: P
authors.lastname: Succop
mesh_terms: D004391:Dust; D005107:Explosions; D017408:Guidelines as Topic; D017146:Models, Organizational; D009073:Mozambique; D016273:Occupational Exposure; D012822:Silicon Dioxide
chemical_list: D004391:Dust; D012822:Silicon Dioxide