The number system on fixed facility placards depicts the risk of each category. Which statement is true?

The number system on fixed facility placards depicts the risk of each category. Which statement is true?

• A. It depicts the hazard class by color
• B. It indicates the risk is 0 to 4, where 0 means no risk and 4 maximum
• C. It shows the manufacturer
• D. It indicates the storage temperature

Answer: (B)

The numbers on fixed facility placards come from the NFPA 704 rating system, which assigns a 0–4 hazard level for each category—health, flammability, and reactivity. This scale shows how dangerous the material is in each aspect, with 0 meaning no hazard and 4 indicating a severe hazard. So the statement that the risk is indicated on a 0 to 4 scale is correct. The colors identify the type of hazard (blue for health, red for flammability, yellow for reactivity) rather than a single overall score, and the placard does not convey the manufacturer or storage temperature.

The numbers on fixed facility placards come from the NFPA 704 rating system, which assigns a 0–4 hazard level for each category—health, flammability, and reactivity. This scale shows how dangerous the material is in each aspect, with 0 meaning no hazard and 4 indicating a severe hazard. So the statement that the risk is indicated on a 0 to 4 scale is correct. The colors identify the type of hazard (blue for health, red for flammability, yellow for reactivity) rather than a single overall score, and the placard does not convey the manufacturer or storage temperature.