Which system is designed for identifying hazards in fixed facilities?

The NFPA 704 system is specifically designed for identifying hazards in fixed facilities. This system uses a color-coded label featuring a diamond shape segmented into four quadrants, which indicate the types of hazards present — health, flammability, instability, and specific hazards (such as reactivity or radiation). Each hazard is ranked on a scale from 0 to 4, with higher numbers representing greater danger. This visual system allows first responders and personnel in the facility to quickly recognize and assess the level of risk, enabling more efficient and informed decision-making in emergency situations.

In contrast, the other options serve different purposes. The DOT Hazardous Materials Regulation focuses on the transportation of hazardous materials, ensuring safe shipping practices rather than on identifying hazards in fixed facilities. The United Nations classification system is aimed at the international transport of hazardous goods and aligns with global regulations, which may not be specific to fixed locations. The Chemical Facility Anti-Terrorism Standards primarily concentrate on security measures at chemical facilities to prevent attacks or sabotage, rather than providing a framework for hazard identification. Thus, among the choices listed, the NFPA 704 system is the most appropriate and relevant for hazard identification in fixed facilities.