Radiation Hazard Symbol - Universal Warning Sign for Ionizing Radiation #3769791 (License: Personal Use)

This image displays the standard ISO 361 radiation warning symbol: a yellow equilateral triangle with a thick black border enclosing a black trefoil (three-bladed propeller) centered on a small circle. Designed in 1946 at the University of California, Berkeley, it signifies the presence of ionizing radiation and is mandated by international safety standards such as IAEA and OSHA guidelines. The high-contrast color scheme ensures visibility and immediate recognition in hazardous environments.

Commonly used on containers, doors, equipment, and signage in nuclear facilities, medical radiology departments, research labs, and transport vehicles carrying radioactive substances; matches user intent for safety education, regulatory compliance, or hazard identification.