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Flammable Contact Cement & OSHA Ristrictions9/25
We have been using a non-flammable spray contact cement for the last 3 years to comply to OSHA 1910.107(c)(6) "Electrical wiring, motors, and other equipment outside of but within 20 feet of any spraying area, and not separated therefrom by partitions, shall not produce sparks under normal operating conditions and shall otherwise conform to the provisions of subpart S of this part for Class I, Division 2 Hazardous Locations". Non-flammable contact cement is being phased out by the manufactures, and is not in great supply. We are a commercial custom casework shop with 35 employees. It is not easy to find the space necessary to be 20 feet away from electrical, motors, extension cords, routers, saws, etc. Has anyone found a suitable non-flammable contact cement replacement with a different solvent rather that NPB? Has anyone developed solutions to spraying flammable contact cement in their shop without replacing electrical with expensive explosion proof outlets, drop cords, plugs, and motors? If I have a 375lb tank with a 20 foot hose do I need to create a 40 foot radius free of things that potentially create sparks (laminate trim router for example)? We use a spray booth for our finishing, but need to use contact cement in many other departments in the shop while working on multiple projects, countertops, reception desks, post laminating custom cabinets, etc. Any and all suggestions or similar stories are welcome as we do not want to be non-compliant with OSHA regulations and the local fire marshal.
We long ago switched to water borne contact. It works well. Not an issue with any of the jurisdictions. It requires a change in technique. Many laminators resist change so if that's your crew, don't bother. We made the change to protect the health of our employees. We have a large spray booth just for contact. An attempt to control the mess. Try the Henkle brand. Test spray and weigh the panels for the amount used so the correct amount can be seen. Biggest problem is poor spray technique. Change is hard!
If you go to a water based contact may I suggest 3 things.
1. Read the tech data carefully. Read the air and fluid pressures for the spray pot and/or diaphragm pump.
2. water will take longer than you Methylene Chloride based non flam canister. Fans will help the dry time.
There are many VERY good water based contacts. I would suggest getting all the local reps in your shop at once. This way your time is used wisely. Have all of them spray your material at the same time. Then compare dry time, initial bond strength, then leave them over night and pull them apart. Take the two best and get pricing.