Dust Exposure while Using a Woodworking Mobile Dust Collector
1University of Wisconsin-Whitewater, Whitewater, WI
Donna Vosburgh, PhD, RS
University of Wisconsin-Whitewater
This pilot study investigated the use of a mobile dust collector (MDC) to reduce exposure to wood dust aerosol while performing the tasks of sanding with a belt sander or sawing with a miter saw.
Situation / Problem:
Within the manufacturing sector, workers' exposures to wood dust aerosol vary greatly due to whether or not a local exhaust ventilation system is used. Such systems can be expensive to install and use. A mobile dust collector (MDC), sometimes called a dust extractor, has the possibility of providing a solution.
This study used IOM samplers to collect wood dust samples with a MDC (model 1.5 HP Dust Force, JDS Company, Columbia, SC), while sanding with a belt sander or sawing with a miter saw. The configurations used for sanding were without the MDC, MDC in the room, and with a commercially available hood attached and placed in front or back of sander stroke. The configurations used for sawing were without the MDC, MDC in the room, and with a commercially available hood attached and placed as close as possible to the back of the saw. Samples were collected with different types of wood (soft and hard) and with different filters on the MDC (bag and cartridge). During sampling, real-time aerosol concentrations were measured using a photometer as a quality control measure.
Results / Conclusions:
For sanding with a belt sander, MDC configuration and wood type were highly significant while filter type was not. Placing the MDC hood in the back of the sanding stroke will significantly reduce exposure compared to not using the MDC or placing the MDC in the room without a hood. For sawing with a miter saw, the MDC configuration was highly significant, while wood type and filter type were not. Although a MDC has the potential to be used as a control method in the workplace, limitations to its use were identified. Hood placement is key when deciding the usefulness of the MDC when using a belt sander. The MDC would not be an option for a workplace where adjusting the hood needs to happen often. There is no concern of hood placement when using the miter saw. The MDC with canister filters are more expensive than the MDC with bag filters. This research found no difference in effectiveness so the cheaper bag filter option would be sufficient for sanding with a belt sander or sawing with a miter saw.
Acknowledgements and References
List any additional people who worked on the project or provided guidance and support along with details on the role they played in the research. (Please include first name, last name, organization, city, state and country).
Reid Barnhart and Connor Carrington are both co-authors from UW-Whitewater
This research was funded by the Midwest Center for Occupational Health and Safety Educational and Research Center [T42OH008434] Pilot Projects Research Training Program funded through the National Institute for Occupational Safety and Health.
What learning level(s) is the presentation content geared towards?
Competent - can perform to basic standards; has a thorough understanding of the content area but limited practical/work experience in the application of the content/concepts.