Potentially dangerous confined spaces, such as tanks, silos, and manholes, are purposely designed with:
Natural ventilation
Continuous access
Powered exhaust
Limited openings
The correct answer and explanation is:
Correct Answer:
Limited openings
Explanation:
Confined spaces like tanks, silos, and manholes are intentionally designed with limited openings for structural integrity, security, and specific operational needs. These spaces are not meant for continuous human occupancy and often have restricted entry and exit points, which makes them hazardous in certain situations.
One of the primary dangers of confined spaces with limited openings is the potential for hazardous atmospheres. Toxic gases, lack of oxygen, or flammable substances can accumulate due to poor ventilation. This makes entry and work within these spaces dangerous without proper safety measures such as gas monitoring, ventilation, and personal protective equipment (PPE).
Another risk associated with limited openings is difficulty in emergency situations. If a worker inside becomes incapacitated, rescuing them is challenging due to the restricted space. Proper training, safety protocols, and confined space permits are essential for workers who must enter such areas.
Additionally, these spaces may pose risks related to engulfment, entrapment, or exposure to hazardous substances. Tanks, for instance, might contain chemical residues, while silos could have grain or other materials that can collapse and trap individuals.
To mitigate these risks, industries follow strict confined space entry procedures, including:
- Atmospheric testing before entry
- Continuous monitoring of air quality
- Use of harnesses and retrieval systems
- Adequate ventilation to remove hazardous gases
- Trained personnel with an emergency rescue plan
In conclusion, confined spaces are intentionally designed with limited openings for structural and functional purposes. However, due to their inherent dangers, strict safety measures must be followed to ensure worker safety.