Asbestos Contractor/Supervisor Practice Exam

Which of the following instruments is used for testing the air for combustible or flammable gases?

1. Oxygen meter

2. Combustible Gas Indicator

3. Electromagnetic field meter

4. Sound level meter

The correct answer is: Combustible Gas Indicator

The correct response identifies the Combustible Gas Indicator as the instrument used for testing the air for combustible or flammable gases. This device is specifically designed to detect and measure the concentration of combustible gases in the environment, providing critical information about potential fire or explosion hazards. The functionality of the Combustible Gas Indicator lies in its ability to sense the presence of gases such as methane, propane, and other hydrocarbons, which are commonly found in various industrial and workplace settings. By monitoring the levels of these flammable gases, it helps ensure safety and compliance with regulations. In contrast, the other instruments mentioned have very different purposes. An oxygen meter is utilized to measure the concentration of oxygen in the air, which is essential for assessing respiratory safety but does not detect combustible gases. An electromagnetic field meter is used to measure electromagnetic fields, typically in relation to electrical safety and radiation exposure, while a sound level meter is designed to measure the intensity of sound, aiming to assess noise pollution or workplace noise levels. Therefore, none of these instruments are suitable for detecting combustible or flammable gases, reinforcing the importance of the Combustible Gas Indicator in ensuring a safe working environment.