Modifications to feed milling operations which satisfy the following
conditions of this section are permitted by rule.
(1) In conjunction with the installation of additional grain
or feed storage silos, including bins used for loading out finished feed,
all materials shall be transported in a closed conveying system when handled
mechanically or pneumatically. Exhaust air to the atmosphere shall be vented
through a fabric filter having a maximum filtering velocity of 4.0 feet per
minute (ft/min) with mechanical cleaning or 7.0 ft/min with automatic air
cleaning.
(2) In conjunction with the installation of a pellet mill/pellet
cooler system, the air from the pellet cooler shall be vented through a high
efficiency cyclone collector which has a cone length at least twice the diameter
of the cyclone.
|
