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FIRE SPRINKLER DESIGN FOR POWDER CLEAN ROOM MANUALWe are installing an 8 x 8 x 8 open face booth and will be using a manual spray gun to apply the powder. We have come upon some issues with the codes and compliance board and would like you input. We are presently in the start up phase of a custom powder coating shop. Why would powder be considered liquid or gas? Thanks.Ģ003 - this entry appended to this thread by editor in lieu of spawning a duplicative thread I claim no expertise in fire suppression, so I'm not challenging your statement, just trying to understand it. 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. Cheapest system would be a dry chemical BC/ABC system. The last thing you want to put on it is water. A powder coat fire is a "Bravo" type fire. An explosion will create a few maintenance problems. If it is not grounded, a spark and explosion may occur. After purchasing compressed air hose, have maintenance check to ensure there is an internal ground wire. It may be the frequent change in NFPA requirements.Īlso, make sure that the compressed air blow-off hoses are grounded. I do not know why the fire protection system is not included. They may suggest CO2 extinguisher for the control panel. Check with you local fire extinguisher company. So our next concern or question is what type of fire suppression is being used, water, gas, or powder type systems?Īnd this is probably a rhetorical question, but why are the systems not built into the booths? We are having a very well known supplier build us a booth, and had it not for my checking sources for Powder Coating Safety, we would have had no idea about Powder Coating booths requiring a fire suppression system. Currently, in our operation we have no fire suppression systems. It is apparent that Fire Suppression is required in the booth. ![]() I have since obtained NFPA 33 (2000 edition), as a responder suggested. (commissions from your purchases make possible) 2002įire protection is required. ![]() "NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials" My questions are, is this actually required in Powder Coating booths? And does having a Powder Coating Operation require us to have automatic Fire Protection inside and outside the booth as well? 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?Īny answers would be greatly appreciated. Where this protection is not available, other approved automatic extinguishing equipment shall be provided. In doing some research, OSHA Regulation 1910.107(h)(12) states "All areas used for spraying, including the interior of the booth, shall be protected by automatic sprinklers where this protection is available. FIRE SPRINKLER DESIGN FOR POWDER CLEAN ROOM INSTALLWe are getting ready to install a manual gun powder coating system. "Fire Protection for Powder Coating Booths, NFPA Issues"Īn ongoing discussion beginning back in 2002. In the end, it may be more of a pain to do than you think.Ī smaller way to start, would be to contact your fire suppression supplier, have them look into Rate of Rise detectors and try to get a clean agent system that will activate at a temp lower than the sprinkler plugs.It's Sunday 01/23/22 & your Q or A is Welcome.Ĭhime right in! (a "no registration" site) ![]() Another issue is making sure the floors above would not drip water down below. The issue in a conversion is making sure it passes inspection with the fire marshal. If the clean agent fails to snuff the fire, the heat will eventually melt the sprinkler plugs and then the water will flow and hopefully kill the fire. In case of false alarm, the countdown can be cancelled at the panel (better hurry).Īfter 30 seconds, the solenoids at the tanks puncture a burst disc, and the room is flooded with the clean agent, breaking the fire triangle and snuffing the fire. The 30 second countdown warns you to get the hell out, the abort buttons only pause the countdown, they do not cancel it. The proper method would be to convert the sprinklers over to dry-pipe with a deluge valve (costly) and add the FM200 or FE-25 system (expensive)Ģ smoke heads need tripped in order to activate 30 second countdown, during this countdown, the deluge valve is tripped and the pipes to the sprinklers are filled with water, being held back by the thermal plugs still. ![]()
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