Which dosimeter provides a permanent dose record and cannot be read by the user?

Which dosimeter provides a permanent dose record and cannot be read by the user?

• A. DLR
• B. SRD
• C. Dosimeter
• D. Shielding

Answer: (A)

The concept being tested is how dosimeters control what can be read and how dose history is recorded. A dosimeter that provides a permanent dose record and cannot be read by the user is designed to protect the integrity of the official exposure history—the wearer cannot tamper with or influence the readout, and the data stay stored for long-term recordkeeping. The DLR fits this description because it is meant to produce a permanent record that is read only by the dosimetry service, ensuring an unalterable, auditable history of exposure. In contrast, a self-reading dosimeter is designed for the wearer to read immediately, so it does not provide a non-user-readable permanent record. The generic “dosimeter” term can refer to devices with various readout capabilities, not necessarily a permanent non-user readout, and shielding is a material used to reduce exposure, not a device for recording dose.

The concept being tested is how dosimeters control what can be read and how dose history is recorded. A dosimeter that provides a permanent dose record and cannot be read by the user is designed to protect the integrity of the official exposure history—the wearer cannot tamper with or influence the readout, and the data stay stored for long-term recordkeeping. The DLR fits this description because it is meant to produce a permanent record that is read only by the dosimetry service, ensuring an unalterable, auditable history of exposure. In contrast, a self-reading dosimeter is designed for the wearer to read immediately, so it does not provide a non-user-readable permanent record. The generic “dosimeter” term can refer to devices with various readout capabilities, not necessarily a permanent non-user readout, and shielding is a material used to reduce exposure, not a device for recording dose.