Grain Bin Safety WEATHER CONDITIONS CONTINUE TO AFFECT STORED GRAIN: A POTENTIAL FOR GRAIN ENGULFMENT
Department of Food, Agricultural and Biological Engineering Franklin County
Ohio farmers have had their challenges with the 2019 season. Late and wet planting, along with variable growing conditions throughout the summer, created a situation whereby grains were harvested at different stages of maturity and with higher moisture content. In some situations, grains were harder to dry or took longer to dry. Grain that goes into the bin with higher moisture content can freeze or bind, affecting grain flow efficiencies. Condensation during drying and storage processes can also create wet surfaces where bin fines accumulate. From these conditions, grain can become bridged or line the sidewall of the bin. With such a wide variability of crop conditions, producers will need to monitor the crop condition and moisture test their product more frequently. During this time of increased attention on the crop, it is also important to establish best management practices for worker safety.
OUT OF CONDITION GRAIN CAN CAUSE DANGEROUS CONDITIONS Both bridged grain and buildup of a vertical mass along the sidewall can create scenarios for potential engulfment.
Bridged Grain
Collapse of a Vertical Mass
Bridged grain is a condition where a hollow cavity is created under a crusted layer of grain. The surface over the cavity appears hard and can be extremely difficult to dislodge. The risk in this situation is for the entrant to fall when the grain is broken up, being buried under several feet of grain.
Grain can create a vertical mass along the sidewalls of the bin due to moisture, bin fines binding or poor grain quality. The risk for the entrant comes when the accumulated grain collapses like an avalanche around him or her.
SAFETY PROTOCOLS FOR BIN ENTRY
A no entry policy is the absolute best form of protection. Establish a culture of safety on the farm by training family and employees to follow safety protocols. If entry must occur: • Lockout any equipment that is associated with the bin being entered. Remove any potential for equipment to be started while a person is inside. • Have an observer outside the bin and maintain constant visual communication during entry. • Wear a harness and lifeline for fall protection. • While completing tasks inside the bin always be aware of your surroundings and changing conditions. • Do not by-pass or dismantle guards. • Monitor the air quality in the bin.
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