Where must hazard identification signs be displayed?

Hazard identification signs must be displayed on stationary containers because these signs serve a critical function in ensuring safety by clearly communicating the type of material contained and any associated hazards. These visual indicators allow for quick recognition by laboratory personnel and emergency responders, which is vital in preventing accidents and ensuring proper handling of flammable gases and other hazardous materials.

In settings where chemicals are stored or used, having visible signs on containers helps establish safe working conditions by alerting everyone in the vicinity about the risks. This ensures that appropriate precautions can be taken, such as using personal protective equipment or implementing specific handling procedures.

Other locations, like exits, personnel uniforms, or employee handbooks, are less effective for immediate hazard identification because they do not provide direct visibility or prompt information regarding the hazards of the materials being worked with or stored in the vicinity. While these may serve other important safety functions, they do not replace the crucial need for clear hazard signage on the actual containers where hazards reside.