Commodity Fumigation License Practice Exam

What level of CO2 requires the use of SCBA or supplied air-line respirators for workers?

1. 1 percent

2. 0.5 percent

3. 2 percent

4. 3 percent

The correct answer is: 1 percent

The correct choice indicates that a carbon dioxide (CO2) concentration of 1 percent or higher necessitates the use of self-contained breathing apparatus (SCBA) or supplied air-line respirators for workers. This is due to the potential for adverse health effects associated with elevated levels of CO2 in the environment. At concentrations around or above 1 percent, individuals are at risk of experiencing symptoms such as headaches, dizziness, and shortness of breath. Such levels can compromise a person's ability to work safely and efficiently, making protective respiratory equipment essential to ensure workers' safety in environments where CO2 concentrations may pose a risk. Understanding the regulatory guidelines regarding permissible exposure limits is crucial in creating a safe working environment. Workers must be equipped to handle these risks, and the requirement for specialized respiratory protection underlines the priority of health and safety in fumigation operations.