Hazards Analysis, Code Compliance & Procedure Development

Services to identify process safety hazards and facilitate compliance with established standards and codes.

Combustible Dust Testing

Laboratory testing to quantify dust explosion and reactivity hazards

Flammable Gas & Vapor Testing

Laboratory testing to quantify explosion hazards for vapor and gas mixtures

Chemical Reactivity Testing

Laboratory testing to quantify reactive chemical hazards, including the possibility of material incompatibility, instability, and runaway chemical reactions

DIERS Methodology

Design emergency pressure relief systems to mitigate the consequences of unwanted chemical reactivity and account for two-phase flow using the right tools and methods

Deflagrations (Dust/Vapor/Gas)

Properly size pressure relief vents to protect your processes from dust, vapor, and gas explosions

Effluent Handling

Pressure relief sizing is just the first step and it is critical to safety handle the effluent discharge from an overpressure event

Thermal Stability

Safe storage or processing requires an understanding of the possible hazards associated with sensitivity to variations in temperature


Classification of hazardous materials subject to shipping and storage regulations

Safety Data Sheets

Develop critical safety data for inclusion in SDS documents


Model transport of airborne virus aerosols to guide safe operations and ventilation upgrades


Model transport of contamination for source term and leak path factor analysis

Fire Analysis

Model transport of heat and smoke for fire analysis

Flammable or Toxic Gas

transport of flammable or toxic gas during a process upset

OSS consulting, adiabatic & reaction calorimetry and consulting

Onsite safety studies can help identify explosibility and chemical reaction hazards so that appropriate testing, simulations, or calculations are identified to support safe scale up

Mechanical, Piping, and Electrical

Engineering and testing to support safe plant operations and develop solutions to problems in heat transfer, fluid flow, electric power systems

Battery Safety

Testing to support safe design of batteries and electrical power backup facilities particularly to satisfy UL9540a ed.4

Hydrogen Safety

Testing and consulting on the explosion risks associated with devices and processes which use or produce hydrogen

Spent Fuel

Safety analysis for packaging, transport, and storage of spent nuclear fuel

Decommissioning, Decontamination and Remediation (DD&R)

Safety analysis to underpin decommissioning process at facilities which have produced or used radioactive nuclear materials

Laboratory Testing & Software Capabilities

Bespoke testing and modeling services to validate analysis of DD&R processes

Nuclear Overview

Our Nuclear Services Group is recognized for comprehensive evaluations to help commercial nuclear power plants operate efficiently and stay compliant.

Severe Accident Analysis and Risk Assessment

Expert analysis of possible risk and consequences from nuclear plant accidents

Thermal Hydraulics

Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

Environmental Qualification (EQ) and Equipment Survivability (ES)

Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

Laboratory Testing & Software Capabilities

Testing and modeling services to support resolution of emergent safety issues at a power plant

Adiabatic Safety Calorimeters (ARSST and VSP2)

Low thermal inertial adiabatic calorimeters specially designed to provide directly scalable data that are critical to safe process design

Other Lab Equipment and Parts for the DSC/ARC/ARSST/VSP2 Calorimeters

Products and equipment for the process safety or process development laboratory


Software for emergency relief system design to ensure safe processing of reactive chemicals, including consideration of two-phase flow and runaway chemical reactions


Facility modeling software mechanistically tracks transport of heat, gasses, vapors, and aerosols for safety analysis of multi-room facilities


Our highly experienced team keeps you up-to-date on the latest process safety developments.

Process Safety Newsletter

Stay informed with our quarterly Process Safety Newsletters sharing topical articles and practical advice.


With over 40 years of industry expertise, we have a wealth of process safety knowledge to share.

Recent Posts

Add Value And Reduce Risk For Combustible Dust Hazards

Posted by The Fauske Team on 08.29.17

By Ursula Malczewski, Chemical Engineer Onsite Safety Services, Fauske & Associates, LLC

In the past, some clients have contacted us only after a combustible dust incident or after OSHA inspected their facility. There has been a shift now that the new NFPA 652 standard and NFPA 654 revision have been published. Companies are being proactive by testing their materials and conducting dust hazard analyses (DHAs) to identify and manage the flammable and/or explosive dust hazards in their facility. These updated standards require owner/operators to determine and mitigate the hazards associated with combustible particulate solids used in their processes within the next few years.

Fauske & Associates, LLC (FAI) offers a unique approach to evaluating combustible dust hazards that allows customers to incorporate a cost-effective method to reduce risk and achieve compliance with Occupational Safety and Health Administration (OSHA) Combustible Dust National Emphasis Program (NEP) and National Fire Protection Association (NFPA) standards.

A proper sampling plan for testing can reduce expenses for test results that are not representative of the combustible dustCombustible Dust Testing MIE hazards in the process. Improperly collected material or samples collected from an inappropriate location can yield test results that do not accurately characterize the explosibility characteristics of the material. This can lead to inadequately designed explosion protection equipment. FAI can assist you to develop a sampling plan, including best location of sampling and proper handling of materials. We can also work with you or your contractors to develop a testing plan/campaign to identify your material’s hazards and get the results you need the first time.

To get started, we offer an ASTM E1226 Go/No Go Explosibility Screening Test and a VDI 2263 burning behavior test. These inexpensive tests are the first step in defining whether or not your material is combustible. If the results are negative, further testing can be delayed until a change in the material or process triggers a re-evaluation. If the results are positive, FAI offers individual tests as well as an OSHA Combustible Dust NEP Testing package to characterize the hazards of your material.

Training employees regarding combustible dust hazards is required per OSHA 29 CFR 1910.1210, Hazard Communication. Specific requirements include proper labeling of hazardous chemical containers, the collection and use of Safety Data Sheets (SDSs), and employee training. Workers – including contractors – need to be informed that combustible dust is
present and instructed how to prevent fires and explosions. Training should include how to recognize and prevent the hazards of the dusts in the facility, recognize unsafe conditions, and take preventative action and alert management.

Management needs to understand how to take effective action regarding information about the identified hazards and utilize a management of change (MOC) program that investigates the safety implications of changes to processes with combustible materials. Design work needs to be completed in accordance to industry or commodity specific standards. Engineers need to be aware of the hazards associated with combustible particulate solids in order to minimize the risks in the plant and to seek professional expertise when required. [1,2]

Fauske & Associates, LLC (FAI) offers a variety of training courses which we can tailor to the needs of your specific facility and/or industry. We offer job specific training for operators, engineers, and managers. Our program focuses on the needs of all levels of employees from new hires to executives.

We also provide both public and private DHA training courses. This two-day class is geared for personnel and professionals whose job responsibilities include conducting dust hazard assessments at facilities. Training can be customized to address specific hazards and at your facility and meet the availability of your personnel. See our website for upcoming cities and dates.

Dust Hazard Analysis (DHA) Services
FAI offers tiered levels of combustible dust analysis services to most cost-effectively meet the needs and expectations of our clients – detailed in Figure 1. The walk-through assessment level provides a gap analysis of relevant NFPA standards to identify the immediate concerns associated with combustible particulate solids. Our DHA and (Process Hazards Analysis (PHA) reports delve deeper and meet the requirements of NFPA 652 while offering pragmatic recommendations for common combustible dust issues such as electrical area classification, housekeeping, and preventative maintenance.

Figure 1 – FAI Tiered Onsite Assessment Services*

Figure 1 – FAI Tiered Onsite Assessment Services*

*The DHA and PHA levels meet the NFPA 652 requirements of a Dust Hazard Analysis.

Additional services we offer that are frequently required by facilities with combustible dust include:

• Classification of Class I, II, and III Hazardous (Classified) Locations (Area Classification)
• NFPA 70E Compliance Assessment
• Arc Flash Risk Assessment (to ensure compliance with NFPA 70E)
• Electrostatic Hazard Assessment
• Bonding & Grounding Assessment

FAI’s expertise allows us to offer clients risk-based solutions to meet compliance requirements by satisfying the performance-based approach that NFPA has outlined. This reduces cost for the client rather than requiring a prescriptive approach that can be cost-prohibitive for a legacy facility that may require extensive upgrades for minimal risk reduction. We work with each client to review measures required to reduce risk and discuss what is feasible in both the long term and short term.

Closing Thoughts
Reports by the National Safety Council show that many companies see a financial return on investment on safety through increased productivity, improved customer service, and money savings from fewer injuries and time off. The cost of not implementing safety, however, can be tremendous.

Besides regulatory fines, a fire or explosion can create significant expenses through increased insurance premiums, lawyer bills, repair or purchase of new equipment, complete closure of the facility, etc. During this downtime, the line or whole plant will not be generating revenue and clients may be lost as they take their business elsewhere to meet their needs. Many times after such industrial disasters, companies can never recover. [3,4]

Having a process that handles or generates combustible particulate solids, powders, or dusts requires an ongoing effort to mitigate or prevent the risk of fires and explosions. That being said, there are many cost effective measures a facility
can take to reduce their risk of a combustible dust incident or OSHA fine. If you have questions regarding onsite facility assessments, performing testing, or are interested in training, please contact dha@fauske.com, 630-323-8750

1. United States. Department of Labor.
Occupational Safety and Health Admin.
OSHA 3371-08 2009. Hazard Communication
Guidance for Combustible Dust. Washington,
D.C.: U.S. Department of Labor, Occupational
Safety and Health Administration, 2009.
2. Geddie, J. Edgar. A Guide to Combustible
Dusts. Raleigh, NC: N.C. Dept. of Labor, Division
of Occupational Safety and Health, 2009. Print.
3. Morrison, Kyle W. "The ROI of Safety."
Safety+Health Magazine. National Safety
Council, 23 May 2014. Web.
4. Completed Investigations - Combustible Dust
Explosions and Flash Fires. U.S. Chemical
Safety Board. Web. 12 Oct. 2016.

Is My Dust Combustible? 

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Topics: Combustible Dust, dust hazard, go/nogo, PHA, DHA, process hazard


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