Radiation Hazard Symbol - Universal Warning Sign for Ionizing Radiation #230687 (License: Personal Use)

This image displays the standard ISO 361 radiation hazard symbol: a magenta (or black) trefoil with three blades arranged at 120-degree intervals around a central circle, set against a contrasting black background. Designed in 1946 at the University of California, Berkeley, it conveys immediate danger from ionizing radiation and is mandated by regulatory bodies worldwide for labeling radioactive sources, transport containers, and restricted areas.

Used on signage, packaging, equipment labels, and safety documentation to alert personnel and the public to radiation risks; matches user intent for safety compliance, hazard identification, or educational material about nuclear safety.