Which technology can be used in detecting gas leaks during firefighting operations?

The correct choice for detecting gas leaks during firefighting operations is photoionization detectors. These devices are specifically designed to detect a wide range of volatile organic compounds (VOCs) and other gases by utilizing ultraviolet light to ionize the gas molecules present in the environment. When a gas is ionized, it creates charged particles that can be measured and displayed on the device, providing real-time feedback about the presence and concentration of the gas.

Photoionization detectors are advantageous in firefighting because they can identify hazardous gases quickly, aiding firefighters in making informed decisions about safety and operations in environments where flammable gases may be present. Most importantly, they can detect gases even at low concentrations, which is critical for effective hazard management in a fire situation.

While infrared cameras are useful for detecting heat and thermal signatures, they are not specifically designed for identifying gas leaks. Electrochemical sensors can detect specific gases and contaminants, but their use is often limited to certain gases only and may not provide the broad range of detection that photoionization detectors offer. Gamma radiation detectors have a different purpose, primarily used for detecting radioactive materials, and are not applicable for detecting gas leaks.