Radiation accidents can pose serious risks to the public and workers. The key to successfully managing a radiation accident is to assess the potential hazards and take the necessary precautions. Planning and simulating an accident that may occur during the use of radiation makes it easier to intervene and control. This book provides basic information on radiation and explains its radiobiological effects. Triage priorities and rules for radiological or nuclear accidents are discussed. Possible radiation-related infections after radiation accidents and the neurological and psychological effects of radiation accidents on children and adults are explained. This book also examines major radiation accidents that have occurred in different parts of the world. This book is therefore a reference source for what can be done before or after possible radiation accidents. © 2025 Elsevier B.V., All rights reserved.