Confined spacesControlling hazards and minimizing risks

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Ways to control hazards and make confined spaces safer

• Barriers and signage• Equipment upgrades or engineered

controls• Contract out confined space work

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Signage• Sign tells workers

to keep out • Worker training —

need to respect signage

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Signage must be:• Clearly visible• Well maintained

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Barrier – tanks• Install barriers in

hatchways to prevent entry

Equipment upgrades and engineered controls

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• Move equipment outside of the space or install a system that removes equipment (e.g., pumps, agitators) for servicing or repair

• Install clean-in-place systems• Install augers to break up bridges in bins• Relocate openings (e.g., on the side, rather

than the top) and make the openings larger• Install removable stairways into vaults or pits

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Manure pit

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Pump shed

• Install ventilation fans• Move valves, pumps, and

controls to outside panels so workers do not have to enter the shed

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Milk tank

• Install clean-in-place automated washing system so workers do not have to enter

• Contract out internal maintenance and repair

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Water treatment plant

• Install stairways for easier access

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Compost truck• Design a pole-mounted pusher so

workers can push remaining compost without entering the truck bed

• Install a wash system in the truck bed to help clear compost

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Bins and silos

• Install an in-place system to remove grain or feed blockages — workers do not have to enter the space

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Contracting out

• Contracting out delegates work to people with specialized training and equipment

• Contractors must have their own confined space entry program

• Employers must ensure contractors are competent to work in confined spaces and are following safe work procedures