Final answer:
Confined spaces as defined by OSHA have specific characteristics that pose risks to workers and require caution. Examples include drums, tanks, and pipes.
Explanation:
A confined space as defined by OSHA is a space that meets specific criteria related to its size and accessibility, making it hazardous for workers if proper precautions are not taken. Examples of confined spaces include a 55-gallon (200-liter) drum, a 1,000-gallon (3,785-liter) tank, and an 18-inch (45-centimeter) pipe. These spaces pose risks such as limited entry and exit points, poor ventilation, and the potential for hazardous atmospheres.
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