In the finishing industry, you will find a real connection between safety and quality-especially with regards to 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 in terms of performance, like airflow velocity; fan, filter and burner capacity; and safety related to fire prevention and operator wellbeing.
However, after the manufacturer ships the machine, installation, operator training and maintenance end up being the responsibility of the finisher. Therefore, it is advisable to give both Bus Paint Booth and associated processes a complete review for fire safety hazards along with other incidents that could occur.
Dust Collection – There are two sides of dust collection: quality and safety. A high quality finish is the direct reaction to adequate elimination of airborne particles which could contaminate finished surfaces. This contamination causes rejects or rework of item that brings about lost profits.
It’s not only surface finish that particle build-up could affect, though. Otherwise cleaned, particles can migrate to locations where operators may not have proper breathing protection, and fire gets to be a real hazard. Sufficient airflow is vital.
The best reasons for fire in dust collection systems include: static electricity discharge, exothermic reaction due to chemical reaction of collected dust,
cutting or welding too near the area.
The end result is to accumulate 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 needs to be carefully considered.” Criteria for dust collection processes usually include air velocity in the booth of 125 to 150 FPM. If properly filtered, this air may be recycled back into the facility. Fresh air dilution ratios for any facility also need to consider heat, off-gases, and odors from ancillary processes such as sanding or grinding.
Furthermore, doors or pressurized plenums can be used to contain dust. An investment in containment is going to be reflected in less cash invested in cleaning and correcting finish rejects.
Spray Finishing Systems and Booths – Customized Spray Paint Booth have a number of their very own specific requirements for safety and quality. First, sufficient and laminar airflow is needed in order that the exhaust can capture overspray and pull it towards the filtration systems, which can be either a dry filter or perhaps a water wash. To remove particulate from the air, the proper filter media or chamber is important. Then, the new air supply needs to be not only clean, but additionally in the correct temperature. More sophisticated coatings could also require humidity control. And naturally, all equipment needs to be properly grounded.
The best fire prevention may begin with comprehension of what can cause a fire in a spray booth. In a conventional system, main reasons for fire include:
using spark-producing equipment such as cutting, welding or grinding near the spray area; friction, in most cases caused by overheated bearings on the exhaust fan, or by rubbing of exhaust fan blades against overspray deposits on the wall of the duct; arcing electrical equipment;
spontaneous combustion; and discharge of static electricity.
In electrostatic spray operations, leading causes of fire include: ungrounded or improperly grounded objects within the spray area, failure to totally discharge equipment before cleaning, pinhole leaks in the paint tubing for the spray gun, other causes comparable to conventional systems like smoking, cutting and welding.
All of these circumstances are entirely preventable, and a number of them relate with maintenance inside the spray booth, a concern called in Chapter 10 of the NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials. The section covers general maintenance requirements, removal of combustible deposits, maintaining high-pressure hoses, waste containers, clothing and cleaning operations amongst other great information.
When spray booths and finishing equipment are installed, they fulfill the criteria for a quality job the first time through. It’s approximately the store to keep the program clean to ensure that it meets that perfect, first-time performance each and every time. The system should allow for: proper airflow to get overspray into the filters instead of on the booth floor, and proper filtration to help keep contaminants from the air but in addition to avoid overspray buildup on the fan or perhaps in the exhaust duct.
For excellent prevention standards, keep New Spray Booth, modify the booth filters regularly, check 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 inside the shop. Again, the best recommendation would be to remember to keep the region neat and provide adequate intake air. Remove combustible deposits, as well as eliminate the potential risk of spontaneous combustion, make sure you hold the correct exhaust volume and purge time. Keep solvent load within the oven below the “Lower Flammability Level,” and purge the oven before startup.
The identical things to consider for airborne contaminants should be put on oven maintenance. Filtered recirculating air or filtered air seals may be critical, and both should be considered.
Airflow for ovens needs to have sufficient exhaust to evacuate solvent vapors and smoke. Also, analyze product conveyance and design the airflow in the oven to reduce stirring or tracking in dirt. Intake and mkmozc filters can be purchased in many temperature ranges to fit any process.
Ovens, when used for whatever they are created are for, really are a safe operation as most solvents are evaporated and other airborne contaminants and combustible deposits shouldn’t be present. It’s very dangerous each time a convection oven is 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
E-mail: [email protected]