Radioactive Symbol - International Ionizing Radiation Warning Sign #3893040 (License: Personal Use)

This image shows the standard ISO 361 radiation warning symbol: a yellow circle with three black equilateral triangles spaced at 120° around a central circle, representing ionizing radiation. The design was adopted in 1946 by the U.S. Atomic Energy Commission and later standardized globally by the IAEA and ISO. Its high-contrast color scheme ensures visibility and immediate recognition in hazardous environments.

Used on containers, doors, equipment, and signage in nuclear facilities, medical radiology departments, research labs, and transport packaging for radioactive materials. Matches user intent for safety education, regulatory compliance, or hazard identification resources.