Firefighter Practice Exam

In the context of the 704 labeling system, which is designed to quickly convey the hazards associated with materials, the identification of a tank containing radioactive material falls within specific color-coded quadrants that represent different types of hazards: health, flammability, reactivity, and specific hazards. The blue quadrant specifically relates to health hazards. A radioactive material poses significant health risks, particularly if exposure occurs without protective gear. Therefore, a signal of 3 or 4 in the blue quadrant indicates a high level of health hazard associated with exposure to the material. A signal of 3 indicates that the material can cause serious temporary or moderate residual injury, whereas a signal of 4 indicates that the material can be lethal to a person upon short exposure. Including the radioactivity insignia alongside the high signal in the blue quadrant enhances immediate recognition of the extreme health hazard, ensuring that first responders and others near the tank are fully aware of the risks posed by potential exposure. The other choices are misaligned with the appropriate markings for health hazards related to radioactive materials, which is why they do not match the correct identification criteria in the 704 labeling system.