IRRSP - Industrial Radiography Radiation Safety Personnel Personnel Dosimetry and Monitoring Questions and Answers

Question 1

According to 10 CFR 34, if a radiographer's direct-reading pocket dosimeter is found to be off-scale and radiation exposure cannot be ruled out, which of the following actions is required within 24 hours?

Accepted Answer

The individual's personnel dosimeter (e.g., TLD or OSL) must be sent for processing and evaluation.

Answer

The individual must be immediately removed from all radiation duties for 30 days.

Answer

A full recalibration of all survey meters on site must be initiated.

Answer

The radiographer must complete a written report to be filed with the NRC.

Question 2

Which of the following is a primary advantage of an Optically Stimulated Luminescence (OSL) dosimeter compared to a Thermoluminescent Dosimeter (TLD)?

Accepted Answer

OSL dosimeters can be re-read to confirm a dose reading, while TLD readings are destructive.

Answer

OSL dosimeters do not require an accredited NVLAP processor for evaluation.

Answer

OSL dosimeters are significantly less expensive to manufacture.

Answer

OSL dosimeters provide an immediate, real-time audible alarm at a preset dose rate.

Question 3

A radiographer begins a shift and recharges their ion-chamber pocket dosimeter. At the end of the shift, they record the reading. How long must the licensee maintain the records of these daily direct-reading dosimeter readings?

Accepted Answer

For 3 years

Answer

For 1 year

Answer

For 5 years

Answer

Until the commission terminates the license

Question 4

During radiographic operations, each radiographer and radiographer's assistant must wear several pieces of monitoring equipment. Which of the following combinations is required by 10 CFR 34.47?

Accepted Answer

An operating alarm ratemeter, a personnel dosimeter, and a direct reading dosimeter.

Answer

A survey meter, an alarming ratemeter, and a film badge.

Answer

A personnel dosimeter, a survey meter, and a direct reading dosimeter.

Answer

A direct reading dosimeter, a Geiger-Mueller counter, and an OSL dosimeter.

Question 5

A radiographer's film badge is due for exchange. According to 10 CFR 34, what is the maximum replacement frequency for a film badge?

Accepted Answer

Monthly

Answer

Weekly

Answer

Bi-weekly

Answer

Quarterly

Question 6

An ion-chamber pocket dosimeter must be checked for correct response to radiation at specified intervals. What is the maximum allowable interval for this check, and what is the acceptable accuracy range?

Accepted Answer

Every 12 months, within ±20% of the true exposure.

Answer

Every 6 months, within ±10% of the true exposure.

Answer

Every 12 months, within ±30% of the true exposure.

Answer

Every 6 months, within ±25% of the true exposure.