What types of signs indicate chemical storage hazards?

The correct answer recognizes that both the National Fire Protection Association (NFPA) diamond and specific hazard signs for flammable and corrosive materials are essential in indicating chemical storage hazards.

The NFPA diamond is a color-coded square sign that provides critical information about the hazards associated with a chemical, including its health risks, flammability, and reactivity. Each quadrant of the diamond contains a number that conveys the severity of the hazard, allowing quick and easy assessment of the chemical's potential dangers.

Additionally, specific hazard signs for flammable and corrosive materials provide clear warnings about the nature of these substances. These signs typically depict a flame icon for flammable materials and an acid symbol for corrosives, which helps in ensuring that individuals handling or storing these chemicals are aware of the specific risks involved.

Combining these two methods gives a comprehensive overview of the hazards and is crucial for maintaining safety in environments where chemicals are stored. The first option, regarding personal protective equipment signs, focuses more on the type of protective gear needed rather than the specific storage hazards associated with chemicals.