F1b: Metal Exposures in Powder Bed Fusion Additive Manufacturing
Presented During: F1: Research Roundup Exposure Assessment
Tue, 6/2: 10:30 AM - 11:00 AM CDT
Ernest N. Morial New Orleans Convention Center
Description
Metal additive manufacturing is transforming industry but introduces unique occupational health risks. Although the laser powder bed fusion process is enclosed, exposures can occur during powder handling, cleaning, and post-processing.
This case study presents three industrial hygiene evaluations at facilities using nickel, cobalt, chromium, and titanium-based alloys. Personal and area air monitoring, metal profiling, and particulate logging were performed under worst-case conditions. At one facility, exposures were below OSHA limits, but nickel exceeded ACGIH thresholds for technicians who vacuumed parts and machines during the workday. At a second facility, a technician who hand-sieved powders exposure exceeded OELs for nickel, cobalt, and iron. Key lessons emphasize the impact of work practices, the effectiveness of HVAC filtration, and the importance of respiratory protection in controlling risk and safeguarding worker health.
This case study presents three industrial hygiene evaluations at facilities using nickel, cobalt, chromium, and titanium-based alloys. Personal and area air monitoring, metal profiling, and particulate logging were performed under worst-case conditions. At one facility, exposures were below OSHA limits, but nickel exceeded ACGIH thresholds for technicians who vacuumed parts and machines during the workday. At a second facility, a technician who hand-sieved powders exposure exceeded OELs for nickel, cobalt, and iron. Key lessons emphasize the impact of work practices, the effectiveness of HVAC filtration, and the importance of respiratory protection in controlling risk and safeguarding worker health.
Co-Authors
Catherine Bobenhausen, MS CIH, CSP, FAIHA
Acknowledgements & References
C. Bobenhausen, Colden Corporation, New York, NY, USA
Keywords
Aerosol and airborne particulate monitoring
Exposure Assessment
Respiratory protection
Ventilation