Radiation Hazard Warning Sign - Official ISO Symbol for Ionizing Radiation #1276611 (License: Personal Use)

This is the standardized ISO 361 radiation warning symbol-a yellow equilateral triangle with a thick black border and the classic trefoil (three-blade) symbol centered in black. It signifies the presence of ionizing radiation that may pose health risks, including acute exposure or long-term contamination. The high-contrast design ensures visibility and immediate recognition in hazardous environments.

Used on doors, containers, equipment, and signage in nuclear power plants, radiology departments, research labs, and transport packaging for radioactive materials. Matches user intent for safety education, regulatory compliance, emergency response training, or hazard identification.