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PROCESS SAFETY





Understanding the importance of proper dust control is critical when considering your overall approach to process safety. Excessive combustible dust can lead to catastrophic results when not properly dealt with. The video below illustrates the risks and results of combustible dust when not addressed as part of your facilities process safety considerations.

CSB EXPLOSION VIDEO The video below shows the dangers of Combustible Dust. (courtesy of U.S. Chemical Safety Board)

The links below open PDFs of Safety Publications regarding Combustible Dust issues.


ATMOS360 divides Industrial Dust Control into three broad categories based on its expertise and work in from controlling respiratory irritants and sensitizers in industrial manufacturing environments:

Online - Hoods and Enclosures : Conduct - Capture - Contain

Ductwork : Convey

Offline - Filtration Equipment

Online - Hoods and Enclosures

Online dust and aerosol control is the science of capturing and containing dust at its source as it is generated by manufacturing processes. This includes close capture hoods designed to collect dust at the point of generation and enclosures to contain dust from entering the plant environment. When ok to use instances where close capture hoods or enclosures are not feasible due to operational constraints, then Area hoods are used in these applications to keep dust levels to permissible limits.

Ductwork

Once the dust has been captured, ductwork is used to convey the dust laden air to the offline filtration equipment. While less complex than online hoods or enclosures, appropriate design of the duct network is essential to the overall performance of the dust control system. Maintaining conveying velocity, optimizing duct routing, minimizing elbows and turbulence are all important elements considered during design. Physical characteristics and amount of dust being transferred must be considered in determining ductwork access requirements. Access can be provided utilizing hinged access doors, flanged spool sections or quick disconnect couplings.

Offline - Filtration Equipment

The offline or filtration side of a dust control can use various types of equipment depending on the characteristics of the dust and the required cleaning efficiency. Some common examples include: baghouses, cartridge filters, drum filters, cyclones and venturi scrubbers. Our Reverse Air Cleaned Filter (RACF), Circular Pulse Jet Filter (CPJF), Drum Filter and, Circle Vee. Atmos360 will use commercially available equipment when it is the correct solution for the project or the customer has a preferred supplier.


NFPA and OSHA regulations discourage the use of blows downs (using compressed air) for cleanup and to regulate the amount of dust accumulation that is permissible in manufacturing environments.

The proper CVC system limits the amount of dust simply being redistributed into other areas from blow downs and broom cleaning. Therefore CVC systems are the preferred method and are used throughout the industry to vacuum and convey accumulated dust spillage from equipment surfaces and floors.

A CVC system typically consists of multiple users having plug-in connections, tubing headers, filter, secondary filter, vacuum producer, and vacuum producer surge protection to form a fully effective CVC System.

ATMOS360 provides Engineering services to install full system integration for a CVC system including:

Atmos360 also provides filtration equipment accessories for your new or existing CVC system:

Detailed information on our drop-out boxes and flow and leak test nozzles can be viewed under Products tab.



INDUSTRIAL DUST CONTROL

COMPLIANCE RISK AVOIDANCE

CENTRAL VACUUM CLEANING SYSTEM

 

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INDUSTRIAL AIRBORNE PARTICLES

Airborne particles have been identified as potential health hazards. With the rise of modern science, medical  scientists have demonstrated the relationship between the chemical and physical characteristics of airborne particles and respiratory diseases.

Generally, airborne particles are categorized into three main types:

Large Particles: Particles greater than 100 microns in diameter are considered large. These particles fall quickly and include such things as hail, snow, room dust, and soot aggregates. Although they can cause irritation to the eyes, nose, and throat, large particles are not fine enough to reach the lungs.

Medium Particles: Particles that lie between 1 and 100 microns in diameter are considered medium-sized. Settling slowly, these particles consist of pollen, large bacteria, coal dust, as well as dust produced during industrial processes, including welding and grinding. These particles pose the greatest health risk because they are able to pass through the nose and throat and penetrate the gas exchange region of the lungs, where they settle.

Small Particles: Small particles are less than 1 micron in diameter and also pose serious health risks. They can be washed out by water and rain and include viruses, small bacteria metallurgic fumes and dust, as well as paint pigments.

Industrial workers are exposed to hazardous airborne particles on a daily basis. Given that there are an estimated 400,000 workers in the welding industry alone, it is important to understand the potential health consequences of particle inhalation. Health concerns include risk for developing lung cancer, damage to nose, throat, lungs and metal fume fever.

ATMOS360’s developed skills and capabilities over the last 27 years has been focused on small airborne particles primarily dust.