Gas fired lead pot canopy hood with flue gas exhaust
and no openings in the top 2/3 of hood. Provide covers for open areas.
Minimize open areas. Use fireproof material to close opening around pipes
(optional).
Note: Dross pot hood is not shown.
Design Criteria:
Q = 150 cfm/ft2 open space + 100 cfm/ft2 of pot surface
Vt³ 4,200 - 4,500 for lead particulate
Vface³ 2,000 - 3,500 for lead fume only
he = 0.25 VPduct (with covers off)
