Which monitoring device does not provide a permanent record of exposure?

• A. Film Badge
• B. Digital Dosimeter
• C. Pocket Ionization Chamber
• D. Thermoluminescent Dosimeter

Answer: (C)

A device that gives real-time readings but doesn’t automatically keep a history is being tested here. A pocket ionization chamber is read on the spot to show the current exposure, but it does not inherently store or archive a permanent dose record unless someone manually logs that reading. In contrast, film badges produce a physical, permanent record after development; thermoluminescent dosimeters store dose information that can be read later to create a permanent record; and digital dosimeters archive exposure data electronically for future reference. So the pocket ionization chamber is the one that does not provide a permanent record by itself.