Which type of hood is required for handling radioactive materials?

The correct choice for handling radioactive materials is the vertical laminar flow hood. This type of hood is specifically designed to provide a controlled environment by directing airflow in a downward direction, which helps to contain any potential exposure to hazardous substances, including radioactive materials. The vertical airflow creates a barrier that protects both the worker and the environment from contamination and ensures that any airborne particles are filtered and contained within the hood.

In addition to containing radioactive materials, vertical laminar flow hoods are equipped with high-efficiency particulate air (HEPA) filters, which are essential for trapping and removing contaminants from the air. This is particularly important when working with substances that could emit hazardous radiation, as it provides an added layer of safety for the personnel involved.

Other choices, such as horizontal laminar flow hoods, fume hoods, and biosafety cabinets, are tailored for different applications. Horizontal laminar flow hoods are primarily used for sterile compounding and do not effectively protect the user from contaminants that may escape the workspace. Fume hoods are designed to handle chemical fumes and vapors, providing adequate ventilation for toxic substances but lacking the specific containment features needed for radioactive materials. Biosafety cabinets are intended for work with biological agents and may not provide the necessary protection