When are signs indicating 'potentially hazardous substances' required to be displayed?

Signs indicating 'potentially hazardous substances' are essential for maintaining safety protocols, particularly in environments where water-reactive or flammable gases are present. These signs serve as crucial warnings to inform personnel and visitors of the specific hazards that exist in the area, allowing them to take necessary precautions. By displaying such signage when these hazardous substances are in use, it ensures that everyone present is aware of potential dangers, promoting a culture of safety and vigilance in the laboratory.

Displaying these signs only during public tours, in personal workspaces, or in break rooms does not adequately address the need for comprehensive safety measures. It is vital that the signs are visible whenever there is a risk associated with the materials being utilized, which is why the context of using hazardous gases is a critical factor in determining when such warnings are necessary. Proper signage helps mitigate the risk of accidents and informs everyone present about the nature of the substances being handled.