What is the ceiling limit for Carbon Monoxide?

The correct ceiling limit for Carbon Monoxide (CO) exposure is indeed 15 parts per million (ppm). This limit is set to protect individuals from the harmful effects of CO, a colorless and odorless gas that can be very dangerous when inhaled, even at low concentrations.

Exposure to carbon monoxide, particularly at levels above this ceiling limit, can lead to various health issues such as headache, dizziness, confusion, and in higher concentrations, severe poisoning or even death. Regulatory bodies establish these limits to ensure safety in environments where CO may be present, such as in mining operations. The ceiling limit indicates that workers should not be exposed to levels exceeding 15 ppm at any time, thereby emphasizing the importance of monitoring and controlling CO concentrations in the workplace.

In comparison, other listed values such as 10 ppm, 50 ppm, and 200 ppm exceed the recommended limit, making them unsuitable for ensuring the health and safety of workers in environments where CO may be encountered.