For personnel monitoring, which two items are considered primary or sufficient?

• A. Film and TLD Badges
• B. Pocket Chamber and Film Badge
• C. Dosimeter and Pocket Chamber
• D. X-ray Scintillator and Film

Answer: (A)

For personnel monitoring, you need devices that provide a cumulative, retrievable dose record suitable for regulatory purposes. Film badges and thermoluminescent dosimeters (TLDs) are the standard pair used to accomplish this. Film badges measure exposure by a change in optical density that correlates with the absorbed dose, while TLD badges use lithium fluoride crystals that store energy and release light when heated, with the emitted light proportional to the dose received. Together, they offer a reliable, permanent record over a monitoring period and are widely accepted for official dose documentation.

Pocket chambers or pocket dosimeters, though useful for real-time readings, do not provide a durable, official dose history or easy archival capability, so they aren’t considered the primary means for personnel monitoring. Other combinations, such as pairing with an X-ray scintillator or using a general dosimeter with a pocket chamber, don’t align with the standard approach for formal dose tracking and regulatory compliance.