25 October 2004
b. Neither water wash nor dry filter filtration systems can reduce the
concentration of volatile organic compounds in the exhaust air stream.
Consult the environmental department for controlling volatile organic
Storage and Mixing Room. Refer to the ACGIH IV Manual, Paint Mix
Storage Room, VS-75-30 for the design of ventilation system.
Paint Mix Hoods. Figure 9-4 is an example of a workbench and a floor
hood designed for paint mixing. Provide 0.5 m3/s per m2 (100 cfm per square foot) of
Figure 9-4 Paint mixing hood and work bench
Size each plenum take-off for no more than 2.44 m (8 ft) of plenum width. Size
each plenum for a maximum plenum velocity of 5.08 m/s (1,000 fpm).
Perforated plate with 9.53 mm (3/8-in) holes. Size open area for an airflow
velocity of 10.16 m/s (2,000 fpm) through holes.
FANS AND MOTORS. Use explosion proof motor and electrical fixtures for
exhaust fan. Do not place electric motors, which drive exhaust fans, inside booths or
ducts. See 4-4.2 for more detailed information about fan selection.
REPLACEMENT AIR. There is no control over the room temperature or
room static pressure for non-mechanical replacement air systems. Dust from outside