What purpose does a TLD serve?

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A TLD, or Thermoluminescent Dosimeter, is specifically designed to measure the amount of radiation exposure that an individual has received. This device contains materials that absorb energy from radiation and subsequently release that energy as light when heated. The amount of light emitted corresponds to the dose of radiation absorbed, thus allowing for accurate assessment of personal exposure levels over time.

The use of TLDs is critical in environments where personnel are at risk of radiation exposure, such as in nuclear reactors or medical facilities utilizing radioactive materials. It serves as an essential safety measure, ensuring that individuals remain within regulated exposure limits for their health and safety.

Other options provided do not relate to the purpose of a TLD. For instance, controlling reactor temperature or monitoring reactor pressure is managed through other systems and instruments specifically designed for those functions, while assessing fuel efficiency pertains to performance metrics rather than radiation monitoring.

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