What term describes radioactive material that has a limited average specific activity or for which limits of estimated average specific activity apply?

• A. Low Specific Activity Material (LSA)
• B. High Specific Activity Material (HSA)
• C. Moderate Specific Activity Material
• D. LSA-1

Answer: (A)

This question tests understanding of how radioactive materials are categorized by their activity per unit mass, which affects how they are transported and packaged. When a material has a limited average specific activity or when limits of estimated average specific activity apply, it is designated as Low Specific Activity material. This labeling signals that the material’s radiological hazard is comparatively low, so the transport rules are lighter than for materials with higher activity per mass. The term HSA would imply higher activity and stricter controls, while moderate Specific Activity Material isn’t a standard designation, and LSA-1 is a subcategory that appears in some frameworks but does not replace the general term. Therefore, the best answer is Low Specific Activity Material.