Radiation Hazard Warning Sign - Universal Symbol for Ionizing Radiation Risk #228590 (License: Personal Use)

This standardized warning sign features a bright yellow equilateral triangle with a thick black border, enclosing the black trefoil symbol (three blades radiating from a central circle), universally denoting ionizing radiation hazards. Designed for high visibility and immediate recognition, it is mandated by international standards such as ISO 361 and IAEA regulations for use near radioactive materials, equipment, or contaminated areas. The contrast and geometry ensure legibility even at a distance or under poor lighting.

Used on doors, containers, equipment, and signage in nuclear facilities, hospitals (radiology/oncology), research labs, and transport packaging to warn personnel and the public of radiation risks; matches user intent for safety compliance, hazard identification, or educational reference.