Radiation Hazard Symbol - Universal Warning Sign for Radioactive Materials #191489 (License: Personal Use)

This is the standard ISO 361 radiation warning symbol, featuring three bold yellow blades arranged in a trefoil around a central circle, set against a black background for maximum contrast and visibility. Designed in 1946 at the University of California, Berkeley, it conveys the presence of potentially dangerous ionizing radiation and is mandated by regulatory bodies such as the IAEA and OSHA. The symbol appears on containers, equipment, and facility entrances where radioactive substances or devices are present.

Used on signage, packaging, and safety documentation in nuclear facilities, medical imaging departments, laboratories, and transport containers. Matches user intent for hazard awareness, safety training, regulatory compliance, or educational content about radiation protection.