IRRSP - Industrial Radiography Radiation Safety Personnel Radiation Detection and Surveys Questions and Answers

Question 1

A radiographer performs the required survey after an exposure and the survey meter reads zero across the entire length of the guide tube and all around the exposure device.
What is the most probable cause and the correct immediate action?

Accepted Answer

The survey meter is malfunctioning or saturated; the radiographer should retreat to a safe distance and troubleshoot the issue.

Answer

The source is safely retracted and the survey confirms it; proceed with the next shot.

Answer

The exposure device is exceptionally well-shielded; a zero reading is expected and normal.

Answer

A temporary electrical interference is causing a false reading; shaking the meter will likely fix it.

Question 2

According to 10 CFR Part 34, which of the following is a required daily check for a survey meter before it is used for radiographic operations?

Accepted Answer

An operability check using a check source or other appropriate means.

Answer

A full multi-point calibration check against a certified source.

Answer

A leak test of the detector's gas-filled chamber.

Answer

Measurement of the half-value layer for the primary isotope being used.

Question 3

During a survey of the restricted area boundary, a radiographer's survey meter needle begins to move erratically, jumping inconsistently. The radiographer is holding the meter steady. Which of the following is a likely cause for this issue?

Accepted Answer

There is a loose connection or a short in the cable between the probe and the meter.

Answer

The source is not properly collimated, causing a scattered beam.

Answer

The meter's range is set too low for the radiation field.

Answer

The battery is low, but still providing some power.

Question 4

A radiographer has just completed the final exposure of the day at a temporary job site. According to regulations, what specific survey must be performed and documented before securing the exposure device for transport?

Accepted Answer

A survey of the exposure device and guide tube to confirm the source is in the fully shielded position.

Answer

A survey of the radiographer's hands and feet for contamination.

Answer

A survey of the entire restricted area to ensure no residual radiation remains.

Answer

A survey of the transport vehicle to establish a background radiation level.

Question 5

Which of the following pieces of information is NOT typically required on a radiation survey record?

Accepted Answer

The manufacturer of the film used for the exposures.

Answer

The date and location of the survey.

Answer

The model and serial number of the survey instrument used.

Answer

The name of the individual who performed the survey.

Question 6

A radiographer is performing a survey and the meter's needle goes off-scale to the right on the x1 scale. What is the immediate, correct action for the radiographer to take?

Accepted Answer

Turn the range selector switch to a higher multiplication factor (e.g., x10 or x100).

Answer

Note the reading as 'maximum' and complete the survey.

Answer

Move the meter further away from the source until a reading is obtained.

Answer

Assume the meter is saturated and immediately exit the area.

A radiographer performs the required survey after an exposure and the survey meter reads zero across the entire length of the guide tube and all around the exposure device.What is the most probable cause and the correct immediate action?

A radiographer performs the required survey after an exposure and the survey meter reads zero across the entire length of the guide tube and all around the exposure device.
What is the most probable cause and the correct immediate action?