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895 Deck Barge Safety
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895 Deck Barge Safety

Non-Atmospheric Hazards in Confined Spaces

Confined spaces are areas that are not meant for continuous work and are hard to get in and out of. These spaces can be dangerous, not just because of bad air, but also because of other risks. These are called non-atmospheric hazards.

General Non-Atmospheric Hazards

Non-atmospheric hazards are physical or mechanical dangers that are not related to the air quality. These hazards can cause injuries or death if not controlled. Some common examples include:

  • Engulfment: Loose materials like sand, grain, or liquids can trap or bury a person inside a confined space.
  • Moving Parts: Machines or tools inside the space can start working and injure workers.
  • Falls: Workers can slip or fall while working in narrow or unstable areas.
  • Electrical Hazards: Exposed wires or equipment may shock or burn workers.
  • Structural Hazards: Weak walls or ceilings can collapse inside the space.
  • Temperature Extremes: Very hot or very cold temperatures can harm workers quickly.
  • Noise and Vibration: Loud sounds or shaking from tools can lead to hearing loss or other injuries.

Non-Atmospheric Hazards on Barges

Barges often have confined spaces like cargo holds, tanks, or voids. These spaces are especially dangerous because of water and vessel movement. Some non-atmospheric hazards on barges include:

  • Shifting Cargo: Loose or liquid cargo can move suddenly engulf or trap workers.
  • Slippery Surfaces: Water, oil, or fuel can cause slips and falls.
  • Limited Lighting: Poor visibility can make it hard to spot dangers or escape quickly.
  • Vessel Movement: The barge may rock or tilt, increasing the risk of falls or dropped objects.
  • Noise from Equipment: Pumps, engines, and other machines may create dangerous noise levels or vibrations.
  • Confined Working Space: Tight spaces can make it hard to move or avoid hazards.

According to OSHA, employers must identify and control these hazards before workers enter any confined space. Workers must be trained and follow safe entry procedures to prevent injuries or deaths.

Knowledge Check Choose the best answer for the question.

5-4. A worker is entering a barge tank that contains loose liquid cargo. What non-atmospheric hazard should they be most concerned about?

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