Which of the following are categories of Low Specific Activity (LSA)?

• A. LSA-1, LSA-2, LSA-3
• B. LSA-A, LSA-B, LSA-C
• C. LSA-1, LSA-2
• D. LSA-1, LSA-4, LSA-5

Answer: (A)

Low Specific Activity shipments are categorized into three groups to indicate how much activity per mass a material has and to determine the packaging and handling requirements. The recognized categories are LSA-1, LSA-2, and LSA-3. The other lettered designations or extra numbers do not correspond to the official LSA framework, so they aren’t used in this context. In practice, a material that fits the LSA criteria can be shipped under the LSA provisions with packaging and documentation appropriate to its specific category, typically less stringent than for higher-activity packaging, while still meeting safety and security standards.