Paint Mixing Room Requirements

These requirements are meant to reduce the risk of explosions due to the presence of flammable volatiles from the paints and finishes used.
Paint mixing room requirements. 1 mixing rooms shall meet the construction requirement of section 5 1. Once a paint mixing room is installed and is part of spray operations there are limitations to the total amount of paint or flammable liquids that can be stored or be present between the spray area and the mix room. This standard specifies requirements for the design construction testing. Paint mix rooms within 6 feet of the spray area may contain up to 2 gallons per square foot of enclosure floor area but the combined quantities of liquids in the spray area and mix room shall not exceed 120 gallons.
The principal hazards addressed in this standard are those of the materials being sprayed. 3 if more than one mixing room is installed the total quantity of liquids shall not exceed the limits in 8 3 5 or 8 3 6. Flammable and combustible. Any quantity of paint or flammable liquid that exceeds 60 gallons must be stored in a storage room.
Close the mixing room door closing the door prevents vapors in the mixing room from entering the rest of shop. A 1 1 the risk to life and property because of the fire and explosion hazards of spray application of flammable and combustible materials varies depending on the arrangement and operation of the particular process and on the nature of the material being sprayed. 8 3 6 where a separate mixing room is provided and the mixing room is located more than 1830 mm 6 ft from an adjacent spray area or areas the quantity of liquid permitted in the mixing room shall not exceed 80 l m2 2 gal ft2 up to a maximum of 1135 l 300 gal as shown in figure 8 3 6. Continuous movement of air so that there is no opportunity for chemicals to build up in the paint mixing room.
4 mixing rooms shall be designed to contain a spill of the contents in the room. All electrical equipment in the paint mixing room e g switches ventilation fans lights telephones should be approved for class i division 1 explosive environments. Installation and maintenance of spray painting booths designated spray painting areas and paint mixing rooms. If the mix room is within 6 feet of the spray area the amount of flammable liquids allowed is approximately 120 gallons.