Radioactive Warning Symbol - International Ionizing Radiation Sign #33462 (License: Personal Use)

This image displays the standard ISO 361 radiation warning symbol: a black trefoil (three-bladed propeller) on a yellow background, enclosed by a red circular border. Designed in 1946 at the University of California, Berkeley, it signifies the presence of ionizing radiation that poses health risks. The high-contrast colors ensure visibility and immediate recognition in hazardous environments.

Used on containers, doors, equipment, and signage in nuclear facilities, medical radiology departments, laboratories, and transport vehicles carrying radioactive substances. Matches user intent for safety education, regulatory compliance, or hazard identification resources.