NRRPT Emergency Response and Decontamination 2

Question 1

During a radiological emergency, which criterion is used to trigger sheltering-in-place as a protective action?

Accepted Answer

Projected dose to the thyroid exceeds 50 mSv

Answer

Projected dose exceeds the general public annual limit of 1 mSv

Answer

Ambient dose rate exceeds 1 mSv/hr at the site boundary

Answer

Air concentration of radioiodine exceeds DAC by a factor of 10

Question 2

What is the primary purpose of a radiation emergency survey instrument's 'check source' before field deployment?

Accepted Answer

To verify the instrument responds and is functioning properly

Answer

To calibrate the instrument to NIST standards

Answer

To determine the exact efficiency of the detector

Answer

To establish a baseline background reading

Question 3

In a nuclear power plant emergency, what does Emergency Action Level (EAL) classification 'Site Area Emergency' specifically indicate?

Accepted Answer

An actual or potential substantial degradation of safety functions with potential for offsite radiological dose

Answer

Minor equipment malfunctions with no threat to safety systems

Answer

A general emergency with imminent radiological threat to public health

Answer

Loss of offsite power requiring immediate evacuation

Question 4

When performing skin decontamination on a contaminated worker, which technique should be used first?

Accepted Answer

Gentle washing with mild soap and lukewarm water

Answer

Scrubbing vigorously with a stiff brush and soap

Answer

Applying DTPA chelating agent topically

Answer

Using dry absorbent material to wipe the contamination

Question 5

The ALARA principle applied to emergency responders means that doses should be kept as low as reasonably achievable while:

Accepted Answer

Accomplishing the emergency mission objectives

Answer

Never exceeding 5 mSv under any circumstances

Answer

Remaining below occupational worker annual limits

Answer

Avoiding all work in areas above 0.1 mSv/hr

Question 6

Which dosimeter type provides the most immediate real-time dose rate information to an emergency responder in the field?

Accepted Answer

Electronic personal dosimeter (EPD)

Answer

Thermoluminescent dosimeter (TLD)

Answer

Optically stimulated luminescence dosimeter (OSL)

Answer

Film badge dosimeter

Question 7

What is the recommended action when a victim arrives at a hospital emergency room with suspected high-level radioactive surface contamination?

Accepted Answer

Immediately treat life-threatening injuries before decontamination

Answer

Delay all treatment until full decontamination is complete

Answer

Transfer the patient to a radiological facility before treatment

Answer

Isolate the patient and wait for a health physicist