Radiation Hazard Symbol | Universal Ionizing Radiation Warning Sign #2216202 (License: Personal Use)

This image displays the internationally standardized radiation hazard symbol (ISO 361), consisting of a central circle with three equilateral triangular blades spaced at 120-degree intervals, rendered in yellow on a black background. Adopted in 1946 by the U.S. Atomic Energy Commission and later formalized by the IAEA and ISO, it signifies the presence of radioactive material or ionizing radiation sources requiring caution. The high-contrast design ensures visibility and immediate recognition across languages and cultures.

Used on signage, equipment labels, packaging, and safety documentation in nuclear facilities, hospitals (radiology/oncology), research labs, and transport containers. Matches user intent for hazard awareness, safety training, regulatory compliance, or educational content about radiation protection.