What does ALARA stand for in radiation safety?

What does ALARA stand for in radiation safety?

• A. As Low As Reasonably Achievable; minimize exposure by time, distance, and shielding
• B. Always Lowered Annual Radiation
• C. As Low As Required Amount
• D. Accurate Labeling And Radiation

Answer: (A)

ALARA means keeping radiation exposure as low as reasonably achievable. It guides how we work with ionizing radiation by using practical controls to minimize dose, mainly by reducing time near the source, increasing distance from it, and using shielding or containment. The phrase itself captures the standard definition in radiation safety, and the emphasis on time, distance, and shielding reflects the core methods used to achieve lower exposure. Other phrasings don’t reflect the established terminology or the safety controls used in practice, so they aren’t correct. In real applications, ALARA also considers economic and social factors and recognizes that the goal is not zero exposure but the lowest feasible level given circumstances.

ALARA means keeping radiation exposure as low as reasonably achievable. It guides how we work with ionizing radiation by using practical controls to minimize dose, mainly by reducing time near the source, increasing distance from it, and using shielding or containment. The phrase itself captures the standard definition in radiation safety, and the emphasis on time, distance, and shielding reflects the core methods used to achieve lower exposure. Other phrasings don’t reflect the established terminology or the safety controls used in practice, so they aren’t correct. In real applications, ALARA also considers economic and social factors and recognizes that the goal is not zero exposure but the lowest feasible level given circumstances.