SOLUTIONS FOR THERMAL SPRAY DUST COLLECTION

RoboVent offers robust dust and fume control solutions for manufacturers using thermal spray processes. RoboVent Senturion is a rugged, high-powered dust collector that minimizes maintenance and operating costs for thermal spray dust collection. Senturion can be easily equipped with a spark arrestance system and deflagration system to mitigate combustion risks for explosive thermal spray dusts.

A RoboVent solutions engineer can design an effective dust control system for your thermal spray applications. We can help you evaluate the health and combustion risks of your thermal spray dust, determine the best dust collector and filter media for your application, and design a comprehensive air quality solution including dust containment and collection, ductwork design, and ventilation and makeup air.

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Types of Thermal Spray Processes

Thermal spraying refers to any process in which a material is heated or melted and then sprayed onto a surface. The feedstock (which may be a metal, alloy, plastic, ceramic or composite material) is heated or melted using electricity (plasma or arc) or combustion flame.

Health Risks of Thermal Spray Dust and Fumes

Fine particulates generated by thermal processes create special health risks because they can be inhaled deeply into the lungs and, in some cases, cross from the lungs into the bloodstream, where they are carried throughout the body. Some sprays may also have toxic elements that cause skin, eye, nose or throat irritation, or that can be absorbed through the skin or mucus membranes.

Combustion Risks of Thermal Sprays

Most of the dusts created by thermal spray processes are considered to be combustible dusts. That means they can explode when allowed to concentrate in the right levels in the presence of oxygen and an ignition source. Both metallic and non-metallic thermal spray dusts can be considered combustible in the right concentrations.

Regulations for Dust and Emission Control for Thermal Spray Processes

The Occupational Safety and Health Administration (OSHA) has issued specific regulations for many different metallic and non-metallic dusts. These are expressed as Permissible Exposure Limits (PELs), which are measured and averaged over a worker’s 8-hour shift. Manufacturers are responsible for ensuring that workers are not exposed to hazardous dusts in levels above the PELs. Failure to control dust in areas where workers may be exposed can result in serious fines and legal action.

Considerations in Dust and Emission Control for Thermal Spray Processes

Most thermal spray processes will be conducted within a spray booth or enclosed area. This allows thermal spray dust and fumes to be contained for efficient source capture. In a source capture solution, air is collected as close to the source as possible and filtered to remove contaminants. Because air collected from thermal spray processes may contain trace gases (from the heating process) as well as solid particulates, it is normally not returned to the facility, even when filtered.

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RoboVent is your full turnkey resource for clean air in industrial environments. From facility testing and engineering, to installing equipment, providing replacement filters and preventive maintenance, RoboVent is ready to manage the whole process.

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