Evaluation of prototypes of hoisting tools for manhole cover and water supply system opening and closing tasks Abstract Physically demanding, the handling of manhole and water supply system covers introduces several risks of musculoskeletal disorders for workers, mainly due to their unsuitable handling aid tools. In a prior study, the researchers showed that no existing tool made this task safe to perform; they therefore established design criteria for a tool better adapted to this task, namely one that is safer and performs better. This time, with the collaboration of a roadway equipment supplier, they will examine in an actual situation the use of a new proposed tool, its effects on musculoskeletal solicitation, and the degree of worker satisfaction with it. This collaboration should lead to the design of an improved and safer tool prototype. Additional Information Type: Project Number: 0099-3310 Status: Completed Year of completion: 2007 Research Field: OSH and Sustainable Prevention Work Environment Team: Daniel Imbeau (Polytechnique Montréal)Rabiul Ahasan (Polytechnique Montréal)Laurent Giraud (IRSST)Bruno Farbos (Polytechnique Montréal)Khalid El Ahrache (Polytechnique Montréal)