Course Description:
Recorded at AIHce EXP 2023
Presentations
Modeling Occupational Exposures to Diacetyl and 2,3-Pentanedione in Non Flavored Coffee Facilities
Exposure to diacetyl and 2,3-pentanedione have been associated with a debilitating respiratory disease called obliterative bronchiolitis. Diacetyl and 2,3-pentanedione in artificial flavorings can be used to flavor roasted coffee but are also naturally produced during roasting. Roasted coffee emits gases and volatile organic compounds some of which are hazardous including diacetyl and 2,3-pentanedione. Some workers in non-flavored coffee roasting and packaging facilities inhale diacetyl and 2,3-pentanedione from roasted coffee above occupational exposure limits depending on their work activities and proximity to the source of emissions. The goal of this study was to estimate chemical emission rates from roasted coffee, estimate exposures based on material properties and facility characteristics, and understand risk factors for exposure at non-flavored coffee facilities. Modeling occupational exposures to diacetyl and 2,3-pentanedione allows for a cost-effective means of assessing risk factors that could considerably influence emissions of these chemicals and ultimately worker exposure. We used emission rates to predict hypothetical occupational exposures of these chemicals to non-flavored coffee workers under different exposure scenarios. We compared model estimates to measured exposure concentrations from field surveys at multiple coffee facilities conducted through the Health Hazard Evaluation Program at the National Institute for Occupational Safety and Health (NIOSH).
Co-Authors
A. Ranpara, Respiratory Health Division, NIOSH, Morgantown, WV USA
E. Fernandez, Respiratory Health Division, NIOSH, Morgantown, WV USA
D. Burns, Respiratory Health Division, NIOSH, Morgantown, WV USA
A. Fortner, Respiratory Health Division, NIOSH, Morgantown, WV USA
Acknowledgements & References
None
Author
Ryan LeBouf PhD, CIH, NIOSH Morgantown, WV
United States of America
Mitigation of Workplace Hazards by Substitution of Garnet Abrasive for Silica in Water Jet Cutting Operation
Deactivation and demolition of decommissioned nuclear facilities requires detailed planning. Hazard analysis includes risk assessment of chemical, physical, biological, and radiological hazards. A combination of classic Industrial Hygiene controls, methods, and innovative techniques are implemented to protect workers from legacy contaminants. This presentation describes the use of a high pressurized waterjet cutting machine to make precise incision openings in thick outer walls of a decommissioned experimental reactor. The use of the waterjet cutting machine provided an efficient method to reduce worker exposures to crystalline silica, carbon steel, alloys, thermal stress, and musculoskeletal disorders. The use of the waterjet created safe means of emergency egress from the facility during deactivation work and facilitated access to upper levels to move work crews, equipment, and supplies more easily for removal of asbestos from the facility in preparation for demolition. The presentation underscores the importance of thinking "outside the building envelope" in designing hazard controls.
Co-Authors
V. Holden, UCOR, Oak Ridge, TN, USA.
Acknowledgements & References
none
Author
Zachary Ryne, UCOR Oak Ridge, TN
United States of America
Contact Hours:
1
Presentation Date:
05/23/2023
Presenters:
Karen Jones, CIH, CSP
Ryan LeBouf PhD, CIH
Zachary Ryne
