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2.10.2 Collapse of Bridged Grain
This procedure may also apply to fertilizer where the bin is intended for fertilizer storage.
• Grain can “bridge” across a bin, creating an empty air space below. A person can easily break through this
bridge and become trapped, risking suffocation.
• To identify bridged grain, look for a funnel shape on the surface of the grain after having removed some of
the grain. If surface is undisturbed, the grain has bridged and formed a crust.
• Never walk on the grain crust. The crust rarely becomes strong enough to support the weight of a person.
• To remove bridge, try breaking the bridge from the inspection hatch or peak. Use a pole to hit the surface,
securing it with a rope in case it is dropped. Be aware that chunks of crusted grain can move down to the
auger and limit flow.
Figure 2.
Suffocation Hazards in Bridged Grain
EASYDRY® WIDE-CORR CENTURION® GRAIN BIN – GRAIN BIN DRYER