Radioactive Warning Symbol - Meaning, History, and Safety Use #1207211 (License: Personal Use)

This standardized symbol, known as the trefoil, consists of three yellow 60-degree扇形 (blades) spaced at 120-degree intervals around a central circle, all set against a black background. Adopted internationally by the IAEA and used in nuclear facilities, labs, and transport, it signifies the presence of ionizing radiation that can pose health risks without proper shielding or procedures.

Used on signage, equipment labels, packaging, and safety documentation in nuclear energy, medical radiology, research labs, and hazardous material transport; matches user intent for hazard awareness, regulatory compliance, or educational reference.