Press Release


Cincinnati, Ohio — September 16, 2015 — ACGIH® will present Combustible Dusts and the Need for Performing a Process Hazard Assessment on December 9, 2015 at the following times:

2:00 p.m. – 4:30 p.m. Eastern Time
1:00 p.m. – 3:30 p.m. Central Time
12:00 p.m. – 2:30 p.m. Mountain Time
11:00 a.m. – 1:30 p.m. Pacific Time

Combustible material, when finely divided into a dust, dispersed in the right concentration in a confined area, and in the presence of adequate oxygen and an ignition source, poses a serious threat to employee safety and health.  Federal OSHA introduced a national emphasis program addressing combustible dust in October of 2007, reissued it in March of 2008, and has begun the process of developing an occupational safety and health standard addressing the hazard.  If a combustible dust is handled, produced or generated by a facility, employers are encouraged to perform a process hazard assessment or analysis (PHA) to determine any risk(s) it poses.  This webinar will initially address the identification of combustible dust and provide a basic understanding of its control technologies.  It will then focus on the overview, purpose, methods, and elements of a PHA that will lead to successfully identifying the hazards posed by combustible dust(s) in the workplace.

After participating in this webinar, attendees will be able to discuss the following regarding combustible dusts:

  • With respect to its identification and overview:
    1. Brief overview of hazard and requirements
    2. Explosion characteristics
    3. Sampling and accepted test methods
    4. Control measures
  • Assessing the hazard it presents – What is a PHA?:
    1. Overview and purpose of a PHA
    2. Types of PHAs and performance methods
    3. Who should participate as part of the PHA team?
    4. Elements of a combustible dust PHA
    5. Special areas of focus for a combustible dust PHA
ACGIH® is pleased to offer webinar attendees an audio option. U.S. and Canadian attendees can connect to the audio portion of the webinar via the toll-free audio telephone link or listen to the audio portion through an audio stream directly through their computer. Other international participants can listen via the audio stream without incurring additional telephone charges.

Gregg Grubb and Christopher Manning, PhD will present this webinar.

Gregg Grubb has served as an industrial hygienist with the State of Michigan since 1987. While working with MIOSHA, Gregg has worked in various education and training, consultative, and enforcement capacities addressing comprehensive industrial hygiene. Gregg possesses a B.S. degree in Chemical Engineering from Michigan State University. He also serves as an adjunct faculty member at the University of Michigan, School of Public Health where he teaches EHS 654, Control of Exposures to Airborne Contaminants; a chairperson, planning committee member and/or instructor with the Michigan and North Carolina Industrial Ventilation Conferences; a member of the ACGIH® Industrial Ventilation Committee; and an instructor with the AIHA Comprehensive Industrial Hygiene Review Course.

Christopher Manning, PhD received his Bachelor’s degree in Materials Science and Engineering from the Massachusetts Institute of Technology, and his Master’s degree and PhD in Materials Science and Engineering from the Carnegie Mellon University. Dr. Manning has worked in academics and industry in the materials production and processing fields.  He is currently the president and a consulting engineer with Materials Processing Solutions, Inc. based out of Massachusetts. Materials Processing Solutions provides a broad range of technical consulting to the metals and materials industry, including issues related to combustible dusts. Dr. Manning is a current member candidate of the ACGIH® Industrial Ventilation Committee.

This webinar contains 2.5 hours of instruction and may be eligible for ABIH CM credit. See the ABIH website ( for CM credit criteria. This webinar qualifies for .15 BCSP (SP) Continuance of Certification (COC) Point for Certified Safety Professionals. Participants seeking confirmation of attendance for the webinar from ACGIH® must attend the live webinar or view the archive and submit a final exam and evaluation. Certificates of Completion will be issued in a timely manner after receipt and completion of these items.

For more detailed information about the Combustible Dusts and the Need for Performing a Process Hazard Assessment webinar, contact Ryan Peltier at or 513-742-2020.

To register for this exciting event, visit the ACGIH® website at

ACGIH® is a member-based organization that advances occupational and environmental health. ACGIH® is one of the industry's leading publications resources, with approximately 400 titles relative to occupational and environmental health and safety, including the renowned TLVs® and BEIs®. For more information, visit the ACGIH® website at or call our Customer Service Representatives at 513-742-2020.

Amy B. Bloomhuff, Esq., CAE
Associate Executive Director