What defines a "major spill" in radiological terminology?

The correct choice is defined by the criteria that a major spill involves a release of radioactive material that necessitates immediate response and cleanup actions. In the context of radiological safety, a major spill typically indicates that the extent of the contamination poses a significant risk to health and safety, requiring swift intervention to mitigate exposure and prevent further spread of radioactive materials.

Major spills are classified based on their potential impact, necessitating a comprehensive response involving assessment, containment, and decontamination processes. This classification helps ensure the safety of personnel, the public, and the environment. Protocols for major spills often include notification of emergency response teams, implementation of containment strategies, and extensive monitoring and cleanup efforts.

In contrast, minor leaks or spills that do not pose a significant risk would be handled through routine safety procedures, without the need for emergency measures. Understanding this distinction is crucial for personnel working in environments where radioactive materials are present, as it directly impacts response planning and health protection measures.