The risk of combustible dust explosions in the powder and bulk solids industry is sometimes part of the job. However, steps can be taken to reduce those risks, including implementing explosion safety technology into your processing system. This article describes the smart technology available to help reduce the explosion risks in processes involving combustible dust.
Vacuum conveying systems transport powders and bulk solids throughout a plant, but these systems also can help achieve other benefits such as making the environment safer, reclaiming material from dust collectors, making mixer loading easier, and reducing costs. This article discusses how different vacuum conveying systems can accomplish benefits like these in your plant.
The interior of a dust collector can provide ideal conditions for a dust explosion. Here's how an isolation flap valve can help you meet safety requirements and avoid a dust collector deflagration.
Any process change can impact a facility’s explosion protection and prevention system. This article discusses what to consider when making process changes and how to make sure your explosion protection system will continue to protect your facility.
When pneumatically transferring highly potent pharmaceutical and other powders, containment is critical. This article discusses containment standards for highly potent bulk solid materials, describes how modern vacuum conveying systems can help meet these standards, and provides two real-world examples of custom-designed vacuum conveying systems for high-potency applications.
Any combustible bulk solid — and even some normally non-combustible solids when reduced into small enough particles — can cause an explosion when certain concentrations and conditions occur.
Combustible dust hazards have come into greater focus over the past several years with the development of new compliance standards. Even so, misconceptions remain that stand in the way of companies taking appropriate actions to protect their workers and facilities from combustible dust.
Columnist Jack D. Hilbert follows up on Part I of his “Factors that affect pneumatic conveying” column (PBE, March 2019, p.18) in which he discusses a variety of issues that may need to be addressed when pneumatically conveying materials.
Every manufacturing operation that generates, processes, or handles combustible dust is required to complete a dust hazards analysis (DHA). This article provides an overview of the DHA process and requirements.
As this new technology matures, additive manufacturing will create some serious safety and efficiency issues for those handling dense metal powders.
Dust exposure issues can occur when loading dry bulk material into vessels for transport. This article explains how spouts and filters can be used to address these issues.
Standard continuous bucket elevators don't always have the necessary features and protections required to move hazardous materials safely and with minimal risk.
This article discusses the explosive characteristics of fly ash and fly ash recovery systems and describes how to safely handle fly ash in your plant.
Performing a dust hazards analysis is the best way to evaluate your plant's risk for a dust explosion.
This article explains what you can do to minimize your plant's risk for a dust explosion.
Metal processors may think their plants have a lower explosion risk because they aren't handling highly combustible materials such as flour or sugar, but many metal dusts have characteristics that create a very high explosion risk.
A bucket elevator’s unique characteristics make it more vulnerable to and more difficult to protect from dust explosions than other mechanical conveyor types, but there are steps you can take to reduce the explosion potential.
Static electricity is a potential ignition source that can cause a fire or explosion in your dust collection system. This article describes how static electricity accumulates in a dust collection system and how to reduce the chances that it will cause serious harm to your workers, equipment, or plant.
The author, an NFPA committee member and dust collection expert, summarizes what you most need to know about NFPA 652, the new combustible dust standard slated for publication next year.
Dust explosion experts first discuss the hazards associated with handling combustible dust in dust collectors, then cover dust explosion ignition sources and methods for preventing or limiting dust explosions in dust collectors.
When a dust explosion occurs, it can injure workers and damage your equipment. This article explains how a safety consulting firm ran tests to determine what caused a dust explosion in a railcar during gravity loading of a powder. The final section lists the firm's suggestions for preventing another dust explosion in the loading operation.
Dust and high temperatures make a potentially dangerous mixture.
Today's finer particle sizes along with increasing powder toxicity and other hazards make it more important than ever not only to contain powders during impact milling, but to provide explosion protection for these milling systems. This article describes explosion protection methods for high-containment impact milling systems that handle fine and hazardous powders.
Successful explosion prevention is no accident. After defining some dust explosion basics, this article explains how to evaluate your plant's dust explosion risks and describes techniques you can use to prevent a dust explosion. Information in a related sidebar explains what you need to know when choosing a method for preventing dust explosions.