The Editor’s Spotlight for the March / April 2017 issue of the Journal of Chemical Health and Safety is shining on:
An exposure assessment of desktop 3D printing by Tracy L. Zontek, Burton R. Ogle, John T. Jankovic, and Scott M. Hollenbeck
A preliminary hazard analysis of 3D printing included process monitoring in two working environments; a small well ventilated materials development laboratory with a Makerbot printer (polylactic acid filament) and a poorly ventilated lab, home-like in terms of room size and ventilation with a Da Vinci XYZ printer (acrylonitrile- butadiene-styrene).
Particle number, size and mass concentration were measured within the printer enclosures, breathing zone, and room simultaneously. Number concentrations were elevated above background typically in the 103 – 105 particles/cm3 range. During printing >99% of the aerosol number concentration was within the ultrafine particulate (UFP) and nanoscale size range. Condensed aerosol emissions from the Da Vinci XYZ printer was examined by Fourier infra-red spectroscopy and suggested isocyanic acid and n-decane as two possible chemical components. Light microscopy and transmission electron microscopy with energy dispersive analysis by X-ray identified individual and aggregated particles highly suggestive of combustion, accompanied by a variety of metallic elements.
Adverse health effects associated with 3D printing related to chemical vapor off-gassing in well ventilated space appears to be low. At this point the significance of ultrafine particle emission is under growing suspicion in its relationship to inflammatory, pulmonary, and cardiovascular effects. Preliminary recommendations for particulate control developed from this analysis are based on good industrial hygiene practice rather than compelling adverse health effects.
You can download the complete article here. An exposure assessment of desktop 3D printing
On January 31 in Boston, EPA headquarters staff gave a 6 hour presentation on the new RCRA generator requirements promulgated last November with specific emphasis on how these changes might impact laboratory waste generators. The staff acknowledged that there were specific issues raised by these changes that might have different impacts on laboratory settings compared to other generators. For example, their presentation indicates that the average RCRA hazardous waste generator has between 1 and 5 waste streams that they typically generate.
Attendees at this meeting were from around the country and had many questions about how these rule changes would be applied in the laboratory setting. The answers to many of these questions will depend on how specific states choose to implement and enforce these changes.
A pdf version of the powerpoint file (169 slides) for this presentation can be downloaded here. The symposium was recorded; contact Ralph Stuart at firstname.lastname@example.org for more information about accessing this information.
In December, the American Chemical Society Board of Directors approved a ACS policy statement on “Safety in the Chemical Enterprise”. As described in the C&EN article at this link, The document outlines the ACS’ recommendations to government agencies in addressing public concerns about the safe use of chemicals in the economy. This statement will provide guidance to ACS staff and committees in developing information about these issues over the next three years.
The 2017 DCHAS workshop schedule for the ACS national meetings is now available here. All of the workshops contents have been updated for 2017. Questions about the workshops can be directed to the DCHAS workshop chair, Russ Phifer.
At the September CSHEMA regional meeting, three DCHAS members (Gail Hall of Boston College, Zehra Schneider-Graham of the University of Massachusetts Boston, and Ralph Stuart of Keene State College) participated in a panel discussion about how Environmental Health and Safety Departments can best support laboratory safety culture through their safety training efforts. The presentations discussed the challenge of developing training programs that reflected the institutional culture while also addressing regulatory requirements.
Three key lessons from the Lab-XL project with the EPA were highlighted:
- Each academic institution is unique
- Connecting to the academic mission is necessary to motivate organizational change
- Flexibility goes a long way in laboratory settings
In addition to describing approaches to this issue in the undergraduate and graduate laboratory settings, the panel presented the results of a DCHAS/CSHEMA survey of safety education efforts. PDF versions of the presentations and the survey results are provided here:
Developing Safety Culture Education at a PUI Campus, Ralph Stuart
Naming the Dead Cat in the Middle of the Table, Gail Hall
The links below provide access to risk assessment presentations and tools for teaching laboratories and chemistry demonstrations presented at the 2016 Biennial Conference on Chemical Education (BCCE). The presentations were made by Ralph Stuart of Keene State College and Sammye Sigmann of Appalachian State University. These documents are still in development and they would appreciate questions and comments about ways to improve them.
Presentation on Meeting New Chemical Safety Expectations in Instructional Laboratories
Posters from the DCHAS poster session in Philadelphia:
EHS challenges in 3D Printing
Pat Mulrooney, Sr. Staff Industrial Hygenist, Lockheed Martin Corporation
Vacuum System and Schlenk Line Safety
Tilak Chandra and Jeffrey P. Zebrowski
What’s in a Code of Conduct?
Good Neighbors – What does it take to be a good neighbor?
You have 5 minutes with your elected representaive. What would you ask him or her to do related to safety?
Incorporating chemical safety and security into the undergraduate curriculum
Ursula J. Williams, Sharon S. Yohn, Daniel R. Dries, Richard R. Hark, Amber J. Helsel-Ickes, John B. Unger Department of Chemistry, Juniata College, Huntingdon, PA 16652
Establishing a Safe Workplace Culture
Mark Thomson Ferris State University, Big Rapids, MI
Re-organizing the CPT Undergraduate Guidelines to Elevate the Status of Safety and Ethics in the Chemistry Curriculum
David C. Finster, Department of Chemistry, Wittenberg University
Safety & ethics in ACS and major engineering societies: A gap analysis
Daniel R . Kuespert PhD, Johns Hopkins University, Baltimore, MD
Laboratory Incidents in the University Of Sonora: Student’s Perspective
C.R. Álvarez-Chávez, R. Ruiz-Talavera, F.O. Muñoz-Osuna, L.S. Marín-Ramírez, A. Zavala-Reyna, R. Pérez-Ríos, M.E. Arce-Corrales
Universidad de Sonora. Hermosillo, Sonora, México
Risk Perception in Laboratory Students of the University of Sonora
K. Pérez-Gámez, C.R. Álvarez-Chávez, F.O. Muñoz-Osuna, L. S. Marín-Ramírez, L. E. Velázquez-Contreras, J. Esquer-Peralta Hermosillo, Sonora, México. Universidad de Sonora.