EXHAUST SYSTEMS

§ 35.81. General requirements.

 (a)  Booths. Booths shall be equipped with exhaust systems which will normally protect the operators from deposits or inhalation of the material discharged from the spray gun.

 (b)  Room booths. When objects are sprayed in room booths the exhaust system shall be kept in operation constantly while spraying is being carried on, and shall effect not less than 20 changes of air per hour. To maintain adequate ventilation, cross currents of air shall be avoided. While spraying is being carried on, currents of air shall not be permitted from windows or from other sources that will interfere with the required velocity of the exhaust system.

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