Radiation Hazard Symbol - Universal Warning Sign for Ionizing Radiation #1475266 (License: Personal Use)

This black-and-white trefoil symbol, consisting of three curved blades radiating from a central circle within a circular boundary, is the internationally recognized warning for ionizing radiation. Adopted by the IAEA and standardized under ISO 361, it appears on containers, doors, equipment, and signage where radioactive materials are stored or used. Its high-contrast design ensures visibility and immediate recognition across languages and cultures.

Used on safety signage, packaging, lab equipment, and regulatory documentation to alert personnel and the public to radiation risks; matches user intent for hazard identification, safety training, or regulatory compliance information.