In the finishing industry, you will find a real connection between safety and quality-especially in terms of spray booths, which can run the risk of causing fire if not properly maintained. Equipment for dust collection is strategically created to meet specific needs when it comes to performance, like airflow velocity; fan, filter and burner capacity; and safety related to fire prevention and operator wellbeing.
However, when the manufacturer ships the machine, installation, operator training and maintenance end up being the responsibility from the finisher. Therefore, it is best to give both Booth Spray and associated processes a comprehensive review for fire safety hazards along with other incidents that may occur.
Dust Collection – There are two sides of dust collection: quality and safety. A top quality finish will be the direct consequence of adequate removing of airborne particles that could contaminate finished surfaces. This contamination causes rejects or rework of product that results in lost profits.
It’s not only surface finish that particle build-up can affect, though. Otherwise cleaned, particles can migrate to areas where operators might not have proper breathing protection, and fire turns into a real hazard. Sufficient airflow is key.
The very best causes of fire in dust collection systems include: static electricity discharge, exothermic reaction due to chemical reaction of collected dust,
cutting or welding too near to the area.
In essence to gather the dust having a well-designed dust collection system that incorporates a smart layout and balanced air replacement. As suggested from the National Fire Prevention Association (NFPA): “Air flow has to be carefully considered.” Criteria for dust collection processes usually include air velocity inside the booth of 125 to 150 FPM. If properly filtered, this air could be recycled into the facility. Fresh air dilution ratios for any facility should also consider heat, off-gases, and odors from ancillary processes like sanding or grinding.
Furthermore, doors or pressurized plenums can be used to contain dust. A smart investment in containment will likely be reflected in less cash spent on cleaning and correcting finish rejects.
Spray Finishing Systems and Booths – Painting Spraying Booth have a number of their very own specific requirements for safety and quality. First, sufficient and laminar airflow is necessary so the exhaust can capture overspray and pull it for the filtration systems, which is often either a dry filter or even a water wash. To eliminate particulate from your air, the correct filter media or chamber is essential. Then, the fresh air supply has to be not just clean, but additionally at the correct temperature. Modern-day coatings could also require humidity control. And naturally, all equipment must be properly grounded.
The most effective fire prevention may start with comprehension of exactly what can produce a fire in a spray booth. In a conventional system, main reasons for fire include:
using spark-producing equipment including cutting, welding or grinding close to the spray area; friction, typically brought on by overheated bearings on the exhaust fan, or by rubbing of exhaust fan blades against overspray deposits on the wall in the duct; arcing electrical equipment;
spontaneous combustion; and discharge of static electricity.
In electrostatic spray operations, main reasons for fire include: ungrounded or improperly grounded objects in the spray area, failure to fully discharge equipment before cleaning, pinhole leaks within the paint tubing to the spray gun, other causes similar to conventional systems like smoking, cutting and welding.
Many of these circumstances are entirely preventable, and a number of them connect with maintenance inside the spray booth, a problem called in Chapter 10 of the NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials. The section covers general maintenance requirements, elimination of combustible deposits, maintaining high-pressure hoses, waste containers, clothing and cleaning operations amongst other excellent information.
When spray booths and finishing equipment are installed, they fulfill the criteria for any quality job the 1st time through. It’s approximately the store to maintain the system clean so that it meets that perfect, first-time performance each and every time. The program should permit: proper airflow to obtain overspray in to the filters as opposed to on the booth floor, and proper filtration to help keep contaminants out from the air but in addition to prevent overspray buildup on the fan or even in the exhaust duct.
For excellent prevention standards, keep Gas Car Repairing Spray Booth, change the booth filters regularly, look into the fan and stack for buildup, guard against static electricity and browse the NFPA 33.
Paint Curing or Drying Ovens – Infrared and convection ovens employed for paint curing or drying are another obvious fire hazard in the shop. Again, the best recommendation would be to remember to keep the location neat and provide adequate intake air. Remove combustible deposits, and to eliminate the risk of spontaneous combustion, ensure you possess the correct exhaust volume and purge time. Keep solvent load in the oven beneath the “Lower Flammability Level,” and purge the oven before startup.
The same considerations for airborne contaminants ought to be placed on oven maintenance. Filtered recirculating air or filtered air seals may be critical, and both should be thought about.
Airflow for ovens must have sufficient exhaust to evacuate solvent vapors and smoke. Also, analyze product conveyance and design the airflow from the oven to lower stirring or tracking in dirt. Intake and mkmozc filters are available in many temperature ranges to fit any process.
Ovens, when employed for what they are designed are for, really are a very safe operation as many solvents are evaporated and other airborne contaminants and combustible deposits shouldn’t be present. It’s very dangerous each time a convection oven can be used for other means, including to evaporate solvents from the drum-load, harden booth filters or ‘treat’ other waste deposits.
SD Longxiang with a professional team for designing and manufacturing spray booth, we try to support the products and service packages for every customer with their customized request, we are not only supply the products, we supply are designer for your painting and spraying works, we supply the solution that helps you work smarter, save time and money and achieve outstanding results, now and in the future.
Shandong Longxiang Machinery Co., Ltd.
Address: Longyao Industrial Park, Xinzhai Township, Zhangqiu district, Jinan city, Shandong, China