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Confined spaces

Agricultural workers face unique hazards related to confined spaces, which are often enclosed areas that are not intended for continuous occupancy. This guide outlines the dangers such as toxic gases, low oxygen levels, drowning, and engulfment found in grain bins, milk tanks, manure ponds, and other areas like well pits and crawl spaces. Workers must be aware of potential risks, such as mechanical equipment and harmful bacteria, and understand the importance of training and safety protocols. Always prioritize safety and consult your employer before entering confined spaces.

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Confined spaces

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  1. Confined spaces What all agricultural workers need to know

  2. What is a confined space? • Enclosed • Worker can get inside • Not intended for occupancy • Difficult to evacuate or rescue 2

  3. Grain bins • Toxic gases • Low oxygen • Engulfment (by grain) • Bacteria and moulds • Mechanical equipment (augers) 3

  4. Milk tank • Mechanical parts (cleaning wands, agitators) • Toxic gas (from cleaning chemicals) 4

  5. Manure pond • Toxic gases • Low oxygen • Drowning • Bacteria and moulds • Moving machinery (agitators and pumps) 5

  6. Open-top water tanks • Toxic gases • Low oxygen • Drowning • Bacteria and moulds • Cleaning chemicals 6

  7. Closed additive tanks • Toxic gases • Low oxygen • Drowning • Bacteria and moulds • Cleaning chemicals 7

  8. Boilers • Asbestos • Silica dust • Hot surfaces • Welding fumes 8

  9. Brown water tank • Toxic gases • Low oxygen • Bacteria and moulds • Mechanical equipment(pumps, agitators) • Drowning 9

  10. Pump shed • Toxic gases • Low oxygen • Bacteria and moulds • Mechanical equipment • Electrical shock 10

  11. Mobile equipment — manure tank • Toxic gases • Low oxygen • Bacteria and moulds • Mechanical equipment • Cleaning chemicals 11

  12. Crawl spaces • Toxic gases • Low oxygen • Bacteria and moulds • Vermin (spiders, snakes) 12

  13. Storm water manholes • Toxic gases • Low oxygen • Bacteria and moulds • Drowning 13

  14. Sanitary–septic tanks • Toxic gases • Low oxygen • Bacteria and moulds • Drowning 14

  15. Valve boxes/chambers • Toxic gases • Low oxygen • Bacteria and moulds 15

  16. Bunkers • Toxic gases • Low oxygen • Bacteria and moulds • Engulfment (burial) 16

  17. Auger tunnels • Toxic gases • Low oxygen • Bacteria and mould • Vermin (spiders and snakes) • Mechanical Equipment 17

  18. Sanitary pump/lift stations • Toxic gases • Low oxygen • Bacteria and moulds • Drowning • Electrocution 18

  19. Well pits • Toxic gases • Low oxygen • Drowning (if flooded) • Electrocution 19

  20. Keep out • Do not enter even to rescue someone, unless you have been trained • Talk to your employer or supervisor 20

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