ACI Concrete Strength Testing Technician Practice Test

How should exposure to hydrogen sulfide gas be addressed due to its lethal potential?

1. By increasing ventilation

2. By wearing heavy protective clothing

3. By restricting access to the area

4. By using enhanced lighting

The correct answer is: By increasing ventilation

Increasing ventilation is a crucial measure for addressing exposure to hydrogen sulfide gas due to its lethal potential. Hydrogen sulfide is a highly toxic and flammable gas that can accumulate in confined spaces, leading to dangerous concentrations that can cause serious health effects or fatalities. By enhancing ventilation in these areas, you can dilute the concentration of the gas, thereby reducing the risk of exposure to workers and ensuring a safer environment. Increased airflow helps to disperse the gas, lowering its level to a safe threshold. While protective clothing, restricting access, and enhanced lighting may contribute to overall safety measures, they does not specifically mitigate the airborne concentration of hydrogen sulfide. Protective clothing can protect individuals from contact but does not prevent inhalation of the gas. Restricting access can prevent potential exposure, but it does not address existing gas presence. Enhanced lighting may improve visibility for emergency responses but does not impact gas concentration.