Physical Hazards
- Inwardly converging surfaces: Inwardly converging walls and downward sloping floors that taper to a smaller cross section can trap a worker.
- Material that could trap or bury a person: Loose materials drawn from the bottom of storage bins can suffocate or bury a worker. Liquids or materials that are suddenly released into the space can have the same effect.
- Mechanical, electrical, hydraulic, and pneumatic energy: Mechanical and hydraulic equipment can move unexpectedly. Workers servicing mechanical and hydraulic equipment can be seriously injured or killed if the energy is not properly controlled.
Confined Space Hazards
- Noise: Noise interferes with essential communication between workers in a confined space and those who are monitoring their work on the outside. High noise levels can impair hearing and cause hearing loss. Permit spaces can amplify sounds produced by tools and equipment.
- Radiation: Sources of radiation include x-rays, isotopes, lasers, and welders.
- Slippery surfaces: Wet, slippery surfaces increase the risk of falls. Leaks, spills, and condensation are common in permit spaces.
- Extreme temperatures: Hot environments put workers at risk for heat stress, especially when they do strenuous work or are wearing protective clothing. Cold environments make their tasks more difficult to accomplish.
Knowledge Check Choose the best answer for the question.
1-8. What is a physical hazard you may find in a confined space?
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