Insights for Safer, More Productive Boat Building

New eBook: Taking the Mystery Out of Combustible Dust Control

Section 1 – What’s the Risk of Combustible Dust?

  • Safety
  • Productivity
  • Compliance

Section 2 – How to Manage Combustible Dust

  • Manual Housekeeping – In-House
  • Manual Housekeeping – Vendor-Supplied
  • Industrial Dust Control Fans
  • What About Dust Collection Systems?




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    yacht image“In the boat building industry, the biggest challenge with dust control is from processing large parts and molds,” reports Jeff Staub, Special Projects Manager for Viking Yachts.

    This industry-leading manufacturer produces 90 percent of each semi-custom boat in house. That generates a lot of dust.

    “We have wood and fiberglass dust,” says Staub, who also has company responsibility for environmental compliance. “The wood dust stems from our Mill department, which fabricates our furniture and cabinetry. And our boats are made from fiberglass reinforced plastic, so a majority of the dust generated is from sanding and grinding of those materials.”

    Staub admits, “When working with these parts, traditional dust collection methods are not always effective and can result in increased housekeeping.”

    What did Viking Yachts do to improve their dust control measures?  

    “We’ve worked closely with the engineers at SonicAire to develop customized layouts for industrial dust control fans at Viking Yachts. Each target area of our facility has unique characteristics, and SonicAire has addressed the differences in operations and building designs. Using their fans helps keep the housekeeping on the ground where it is easier, cheaper and ultimately safer to clean than high surfaces.”

    Viking started with a pilot of four fans in the fiberglass production area, to test their effectiveness. The results were impressive. Staub notes, “We have since expanded the program into our wood mill and R&D areas, by adding 13 more fans. And we have plans to expand the coverage to other areas of the facility soon.”

    conveyor belt and combustible dust hazard

    What is Combustible Dust?

    A layer of dust equal to the thickness of a single paper clip can have the capacity to explode, according to OSHA and the NFPA. And according to the annual Combustible Dust Incident Report, there were 194 combustible dust events in the United States in 2018, resulting in 39 injuries and one fatality. A 2018 U.S. Chemical Safety Board (CSB) report recorded a total of 59 fatalities associated with combustible dust incidents over the previous 11 years.

    No single sector of industry is responsible for these tragedies. The CSB has reported dust explosions across multiple industries, including lumber, food, plastics, metal, chemical, boat building and electrical manufacturing. Types of dusts include, but are not limited to metal dust, such as aluminum and magnesium; wood dust; plastic or rubber dust; fiber; lint; biosolids; coal dust; organic dust, such as flour, sugar, paper, soap, and dried blood; and dusts from certain textiles. In fact, OSHA has identified over 130 sources of dust that can create the potential for combustible dust events. It’s an issue that is present across the marketplace.

    Industry facility managers have responded to the problem of combustible dust with improved housekeeping measures to help mitigate the risk of these disasters occurring. Unfortunately, manual methods and dust collection systems typically aren’t enough to keep up with the accumulation of dust. These manual cleaning methods are also costly and difficult to manage, often requiring shut-downs for manufacturing and significant ongoing maintenance budgets.

    How SonicAire Can Help

    Fortunately, a better solution for your combustible dust challenges is available. SonicAire’s industrial dust control fans offer a proactive approach. This precision dust-control technology prevents combustible dust accumulation, effectively mitigating the risk of disaster.

    The SonicAire Solution

    SonicAire proprietary technology combines two methods to control dust flow.

    High-Velocity Airflow

    SonicAire fans use high-velocity airflow to clean overhead areas. The strength of this airflow effectively prevents the accumulation of combustible dust particles on overhead structures in the facility.

    Thermal-Current Control

    Typical airflow includes upward thermal currents which naturally lift and carry particles to overhead areas of facilities, where dust quickly accumulates and can become a fire hazard. SonicAire industrial dust control fans prevent these upward thermal currents from holding dust in the air.

    BeforeAfter
    Adjust the slider arrows in the middle of the Before/After photos to see the effect of using SonicAire dust control fans in your facility.

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    Taking the Mystery Out of Combustible Dust Control

    Insights for Safer, More Productive Boat Building




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      FAQs on Combustible Dust

      How can dust explode?

      Five conditions must be present to cause a combustible dust event. This is referred to as the “Dust Explosion Pentagon.”

      1. Dust: An application that generates dust.
      2. Dispersion: Accumulated dust that has spread over the area to form a suspended dust cloud.
      3. Confinement: Interior conditions that trap the dust cloud.
      4. Oxidant: Oxygen in the surrounding air.
      5. Ignition source: This could be something as minor as static electricity or a spark from metal scraping metal.

      Here’s how the Dust Explosion Pentagon works: As products are created or handled, the process inevitably creates dust (#1), which then travels on air currents and settles on various equipment and structural elements in the surroundings. In a confined area (#3), such as a manufacturing facility, the dust can also become suspended (#2) in the air (#4). Open flames, a spark from equipment, or even extreme heat can provide the ignition source (#5) to complete the pentagon.

      sonicaire dust explosion pentagon

      When this happens, the suspended, contained dust can explode. This can ignite layers of dust that have accumulated in the facility, further spreading the fire.

      What are primary and secondary combustible dust explosions?

      As referred to in the previous question, when combustible dust ignites, it can cause more than one event. When the pentagon is complete, the first explosion occurs. This is referred to as the primary explosion.

      This explosion may disturb or loosen other accumulated dust in the area. As this dust forms another cloud, it ignites as well. This explosion, referred to as a secondary dust explosion, can cause more destruction than the initial one.

      These explosions and subsequent fires can cause devastating structural damage, personal injury and loss of life. Between 2006 and 2017, combustible dust incidents in the U.S. resulted in 66 fatalities and 337 injuries, according to reports by the Chemical Safety and Hazard Investigation Board (CSB).

      What is deflagration?

      Deflagration is simply the heating of a material until it rapidly burns. It involves the release of heat by a burning substance, which ignites and spreads fire. A gas stove and the burning of gasoline in an automobile are common, safe examples of deflagration. During a combustible dust event, deflagration happens so quickly that it produces pressure that can cause explosions.

      What regulations guide combustible dust safety and compliance?

      For safe and legal operation, facilities must adhere to standards set by OSHA and the National Fire Protection Association (NFPA). Several Federal OSHA standards are mandatory, and many states have adopted OSHA-approved plans that adhere to these standards.

      The standards set by the NFPA are created by experts in fire safety. While their recommendations are not legally binding, the NFPA standards are often used to create OSHA state and federal regulations. The most recent standard set by the NFPA is NFPA 652: Standard on the Fundamentals of Combustible Dust. This document includes requirements for the completion of dust hazard analyses (DHA) as well as hazard management steps for mitigation and prevention.

      How can facility managers prevent combustible dust events?

      Appropriate housekeeping measures are key to the prevention of combustible dust events. Facility managers can take proactive steps to minimize dust accumulation and mitigate risk.

      SonicAire Fans at Work

      Viking Yachts
      Using SonicAire fans helps keep the housekeeping on the ground where it is easier, cheaper and ultimately safer to clean than high surfaces.
      – Jeff Staub, Special Projects Manager
      Continental Structural Plastics
      The fans are a great tool for controlling dust concerns. We saw such a dramatic improvement in dust reduction that we made the decision at a corporate level to put SonicAire fans in all of our locations, because we believe in the products.
      – Dina Graham, Corporate Director of Health & Safety
      Greene Team Pellet Fuel
      We installed four SonicAire fans in our facility, and we’re amazed at how clean the overhead areas are staying. There is practically zero dust in the rafters. We couldn’t be happier with the performance of the SonicAire fans.
      – Andy Galis, Operations Manager
      Columbia Forest Products
      We were so happy with the results of the SonicAire fans. They reduced direct labor costs by $25,000 annually, boosted morale and removed a significant maintenance burden from employee shoulders.
      – Jeff Wakefield, Plant Manager