What methods are used to reduce radiation exposure at work?

The choice that correctly identifies the methods used to reduce radiation exposure at work is based on three fundamental principles: time, distance, and shielding.

Time refers to limiting the duration of exposure to radiation sources. By minimizing the time spent near a source, the overall dose of radiation received by an individual can be effectively reduced.

Distance involves maintaining a safe physical space between the worker and the radiation source. The intensity of radiation decreases significantly as you move away from the source, following the inverse square law. The greater the distance, the lower the radiation exposure.

Shielding consists of using protective barriers to absorb radiation and reduce exposure. Different materials can be employed as shields depending on the type of radiation; for instance, lead is commonly used for gamma radiation, while plastic or glass may be more effective for beta particles.

Together, these three methods form the cornerstone of radiation safety protocols, ensuring that workers are safeguarded while performing their duties in environments where radiation exposure is a concern.