Sentence 5.3.3.1.(2)

  1. +

Intent

Intent 1:

To exempt grain storage bins from the application of the requirement for mechanical exhaust ventilation [dust-collecting system] in Sentence 5.3.1.3.(1), and to permit them to be ventilated by open vent stacks only if mechanical exhaust ventilation is impracticable, and if the open vent stacks:

  • are large enough to allow for air displacement as the bin is emptied or filled, so that the bin does not become significantly pressurized or depressurized,
  • prevent dust accumulating in vents from obstructing their effectiveness,
  • vent to the exterior the dust-laden air displaced from the bins, and
  • prevent entry of rain or snow from impairing effectiveness of the vents.
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