STD 01-05-010 - Spray Booths - Average Air Velocity

This STD provides clarification for 29 CFR 1910.107(b)(5)(i) - Spray finishing using flammable and combustible materials, regarding air velocity. Old STD number: STD 1-5.10 - Average Air Velocity of Spray Booths. The average air velocity requirements over the open face of the booth stated in this paragraph for spray finishing operations using flammable and combustible liquids were taken from NFPA-33- 1969 and pertain to those hazards associated with fire protection or the removal of flammable vapor accumulation from the interior of the booth during spraying operations. This paragraph applies to maintaining the concentration of flammable vapors below the lower explosive limit (LEL) in a spray booth but does not apply to maintaining operator exposures to within the permissible exposure limits (PEL). 

Additional related information can be found on the safety and health topic pages for Flammable Liquids, Spray Finishing Operations, Autobody Repair and Refinishing and Personal Protective Equipment. Also reference SN 19 - Class I and Class II, Division 2 Hazardous Locations for Spray Finishing and OSHA Technical Manual (TED 01-00-015) provides technical information about workplace hazards and controls to OSHA’s Compliance Safety and Health Officers.