For personnel monitoring, which two devices are the primary/sufficient/required pieces of equipment?

• A. Dosimeter and pocket chamber
• B. Film and TLD badges
• C. Pocket chamber and film
• D. TLD badges and dosimeter

Answer: (B)

Monitoring personnel exposure relies on devices that accumulate dose over time and can be kept as a permanent record. Film badges capture exposure by the darkening of photographic film and must be processed to read the dose, while thermoluminescent dosimeter badges use crystals that store energy and emit light when heated, providing a precise dose readout. Together they offer a practical, widely accepted way to document occupational radiation dose across a monitoring period, with one providing a visualable, processed record and the other offering stable, highly repeatable measurements.

Pocket chambers or real-time pocket dosimeters are used for immediate dose rate checks and field surveys rather than for producing the official cumulative history required for personnel monitoring. A dosimeter with a pocket chamber would cover real-time readings but not supply the standard documented dose history needed for regulatory reporting. Hence, film badges and TLD badges are the primary combination for personnel monitoring.