NRRPT Radioactive Material Control 2

Question 1

Under 10 CFR Part 20, what is the maximum permissible surface contamination level (removable) for beta-gamma emitters on unrestricted area surfaces?

Accepted Answer

200 dpm/100 cm²

Answer

1,000 dpm/100 cm²

Answer

5,000 dpm/100 cm²

Answer

100 dpm/100 cm²

Question 2

Which document must accompany a shipment of radioactive material when transported by highway in the US?

Accepted Answer

Shipping papers (Hazmat manifest)

Answer

Radiation Work Permit

Answer

ALARA Action Plan

Answer

Bioassay report

Question 3

A 'fixed contamination' reading differs from a 'removable contamination' reading in that fixed contamination is:

Accepted Answer

The activity that cannot be transferred by wiping

Answer

Measured only with a Geiger-Müller detector

Answer

Always above regulatory limits

Answer

Detected exclusively by gamma spectroscopy

Question 4

What is the primary purpose of a Radioactive Material (RAM) inventory?

Accepted Answer

To verify accountability and detect losses or theft of licensed material

Answer

To calculate occupational dose for all workers

Answer

To determine shielding requirements for new facilities

Answer

To establish annual radiation dose budgets

Question 5

When a radioactive spill occurs in a laboratory, what is the FIRST action a worker should take?

Accepted Answer

Evacuate and post the area to prevent others from entering

Answer

Notify the Radiation Safety Officer immediately by phone

Answer

Begin decontamination using soap and water

Answer

Survey the spill area with a Geiger counter to quantify activity

Question 6

Which of the following best describes the concept of 'confinement' in radioactive material control?

Accepted Answer

Physically containing material to prevent its spread into the environment

Answer

Using lead shielding to reduce external dose rates

Answer

Limiting the number of workers allowed in a radiation area

Answer

Scheduling work to minimize time near radioactive sources

Question 7

A survey meter reads 0.5 mR/hr at a drum labeled as radioactive waste. What additional measurement is needed to assess internal contamination hazard from the drum?

Accepted Answer

Surface smear/wipe test for removable contamination

Answer

Neutron flux measurement

Answer

Whole-body dosimetry reading of the nearest worker

Answer

Airborne radon concentration