Radiation Hazard Symbol - Official Trefoil Warning Sign #228565 (License: Personal Use)

This high-contrast black-on-white trefoil symbol, standardized by the IAEA and ISO, consists of three 60-degree扇-shaped blades radiating from a central circle, representing radiation emitted from an atomic nucleus. It is mandated on containers, doors, equipment, and signage where radioactive materials or ionizing radiation sources are present. The design ensures immediate recognition across language barriers for safety compliance.

Used on nuclear facilities, medical imaging rooms, radioactive waste containers, and industrial radiography equipment; matches user intent for safety guidance, regulatory compliance, or educational material about radiation hazards.