Explosion is a concern with enclosed powder recovery systems and associated ductworks. 2002 but continuing through 2017. Thus the risk of fire is minimalized. It is apparent that Fire Suppression is required in the booth. info on Amazon. } "NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials" Other systems are available. link to spec at Techstreet] requirements. Or is the powder used for powder coating considered non-flammable nor non-combustible, therefore the powder coating booth need not conform to this regulation? A dust explosion may occur when both: 3 (i) the concentration of dust in the air is between the Lower Explosive Limit (LEL) and Upper Explosion Limit (UEL). I have never seen or heard of IR/UV detection equipment within an open faced-manual system. Why waste warm or conditioned air to the outside environment? A. A. Interestingly the Powder Coat Institute when asked about this for an open booth with manual gun said they did not see a reason for any fire or explosion suppress system since letting go of the trigger cuts off the powder source and any explosion of airborne dust would be so fast that any fire or explosion suppression system would be too late to do anything. Many insurance companies are still not up to speed on powder coating and its characteristics. I do not know why the fire protection system is not included. It then goes on to say that enclosed filter systems shall have protection against explosion. You most likely will have to install some expensive installation. Post your own question ... These variables plug into a calculation to determine Maximum Concentration. 2. - Powder recovery system. The risks in a powder coating booth electrostatically charged dust particles. A. Only your Air Quality folks from your local/regional area can answer that question. link to spec at Techstreet]. Although the booth and equipment manufacturers design their systems to the highest standards for safety there is always a risk that a spark will occur in a powder coating booth. and Anyone with some insight on this? Q. I have a basic question. "background": "#fff", Chapter 9 – Protection, proved to be confusing. link Therefore, manufacturers who use a non-flammable coating are not required to abide by the standard. I had one insurance company ask me to install a water suppression system within my oven. We have come upon some issues with the codes and compliance board and would like you input. I have received the following from our inspector: "popup": { Any answers would be greatly appreciated. Manual booths are usually not subject to this criteria because there is an operator holding the application gun trigger and it can be turned off by him/her. "palette": { 36. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. Booths, exhaust ducts, and both sides of dry filters are protected by a fire-extinguishing system, 2404.4. And this is probably a rhetorical question, but why are the systems not built into the booths? Sprinklers are protected from residue, means of protection is noted on the plans, 2404.5.2. Q. Fire protection is required in both manual and auto gun booths. Normally paint booths do not come with a system already installed due to the number of different fire system manufacturers and their varying piping requirements or limitations. A. I tend to follow the NFPA recommendations and OSHA requirements. (adsbygoogle = window.adsbygoogle || []).push({}); Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. - Make up air for the spray booth and oven. I have seen this done when the material to be dried is highly flammable or solvents are present in significant quantities within the oven. & Install'nChemicals & Consumables The risks in a powder coating booth electrostatically charged dust particles. In any automatic type powder application system, you are required to install safety shutdown equipment such as IR/UV detection which cuts all incoming powder, electric and air to the booth in event of a spark/fire. link to spec at Techstreet], which outlines the classification of the area the booth was installed in. Secondary would be a CO2 System. My experience has been with water. Fire Protection for Powder Coating Booths, NFPA Issues. The CENELEC standard EN50177 states that type B and C guns shall have a local. So our next concern or question is what type of fire suppression is being used, water, gas, or powder type systems? Unfortunately this appears to be an area where insurance companies just take the belts and suspenders approach without regard to the facts. I claim no expertise in fire suppression, so I'm not challenging your statement, just trying to understand it. After purchasing compressed air hose, have maintenance check to ensure there is an internal ground wire.
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