Spray Booth Air Flow Requirements

Spray booth safety tips.

Spray booth air flow requirements. Aside from these minimum requirements for paint booths there are some essential safety practices to make sure your booth is maintained properly. Spray areas appear to be covered under 29 cfr 1910 107 which does not specify a minimum design airflow rate. Velocity and air flow requirements. The old standard was 100 linear feet per minute lfm and this is still stated in the international fire code ifc.

Their air flow requirements are summarized below. Fans to push and pull the air being pushed in and pulled out are done with two types of fans. The three main styles of paint booths are cross draft down draft and side down draft paint booths. The spray booth should be located to allow for proper air entry and flow through the booth.

Some booths are designed so that air entering at the back of the booth but from the ceiling moves to the far end of the booth where exhaust filters are. We consider the painting area a spray area rather than a spray room or booth. Typical paint booth air flow values can be read about here or just remember typically a cross draft paint booth will have air flow of about 100 feet per minute based on the width and height of the booth a downdraft will have air flow of about 50 feet per minute. Once you have measured the air flow you will want to see what the original design specification for your paint booth airflow was.

A critical step in selecting a spray booth system is establishing the minimum air velocity and volume requirements. This is the size of the fan needed. Osha 29 1910 and nfpa 33 have minimum requirements for air flow to decrease the concentration of flammable materials in a spray paint booth. Restrict access for anyone with asthma allergies and respiratory illnesses.

Many spray equipnment companies regard a downdraft booth to be a large booth and they design for the 50 ft min target. One hundred feet per minute is the guideline for air movement in the booth area. Controlling the paint booth air flow going into the booth with relation to the air being exhausted from the booth is critically important to maintain the proper flow of air over the item being painted and remove the over spray effectively. Spray painting performed in the hangars will be primarily spot maintenance but large areas of the aircraft could occasionally be painted.

From your question is it not clear what you mean by semi downdraft booth. Multiply the booth s face area by 100 feet per minute to achieve cfm. Keep your spray booth clean and change filters regularly.