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

EPA Protective Action Guides use a projected thyroid dose of 50 mSv as a key threshold for recommending sheltering.

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

A check source confirms instrument operability and response, not a full calibration.

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

Site Area Emergency indicates substantial safety function degradation with potential for, but not imminent, significant offsite dose.

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

Gentle washing with mild soap and lukewarm water removes contamination while avoiding skin abrasion that could increase absorption.

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

In emergency response, ALARA is applied within the context of accomplishing life-saving or mission-critical objectives.

(NRRPT) National Registry of Radiation Protection Technicians Practice Test